Bump nix from 0.17.0 to 0.20.2

[dependabot[bot]]

Bumps nix from 0.17.0 to 0.20.2.

Changelog

Sourced from nix's changelog.

[0.20.2] - 28 September 2021

Added

Changed

Fixed

• Fixed buffer overflow in unistd::getgrouplist. (#1545)

[0.20.1] - 13 August 2021

Added

Changed

Fixed

• Locked bitflags to < 1.3.0 to fix the build with rust < 1.46.0.

Removed

• Removed a couple of termios constants on redox that were never actually supported. (#1483)

[0.20.0] - 20 February 2021

Added

• Added a passwd field to Group (#1338)
• Added mremap (#1306)
• Added personality (#1331)
• Added limited Fuchsia support (#1285)
• Added getpeereid (#1342)
• Implemented IntoIterator for Dir (#1333).

Changed

• Minimum supported Rust version is now 1.40.0. (#1356)
• i686-apple-darwin has been demoted to Tier 2 support, because it's deprecated by Xcode. (#1350)
• Fixed calling recvfrom on an AddrFamily::Packet socket (#1344)

Fixed

• TimerFd now closes the underlying fd on drop. (#1381)
• Define *_MAGIC filesystem constants on Linux s390x (#1372)
• mqueue, sysinfo, timespec, statfs, test_ptrace_syscall() on x32 (#1366)

... (truncated)

Commits

• 72d805a (cargo-release) version 0.20.2
• 199acc7 [skip ci] update version in README
• 94ccf88 Fix memory unsafety in unistd::getgrouplist
• de534c1 Release 0.20.1
• b13f73c Fix a non_fmt_panic warning with Rustc 1.52.0
• c0a9fd7 Use memoffset::offset_of instead of homegrown macro
• e266b7c Fix test_vsock failure on VMADDR_CID_LOCAL testing
• feb8fe6 Remove some actually unsupported termios iflags on redox
• 97f6ec5 Lock bitflags to < 1.3.0 to fix the build with rust < 1.46.0
• 4c70217 Merge pull request #1389 from asomers/r0.20.0
• Additional commits viewable in compare view

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