[INFO] fetching crate nix 0.20.0...
[INFO] testing nix-0.20.0 against master#99e3aef02079e9c10583638520cd0c134dc3a01d for pr-85530
[INFO] extracting crate nix 0.20.0 into /workspace/builds/worker-2/source
[INFO] validating manifest of crates.io crate nix 0.20.0 on toolchain 99e3aef02079e9c10583638520cd0c134dc3a01d
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+99e3aef02079e9c10583638520cd0c134dc3a01d" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate nix 0.20.0
[INFO] removed 0 missing tests
[INFO] finished tweaking crates.io crate nix 0.20.0
[INFO] tweaked toml for crates.io crate nix 0.20.0 written to /workspace/builds/worker-2/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+99e3aef02079e9c10583638520cd0c134dc3a01d" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+99e3aef02079e9c10583638520cd0c134dc3a01d" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:20528e8c29e4536546f0102ce88568b16ea7538393a33fcca951030f7af10457" "/opt/rustwide/cargo-home/bin/cargo" "+99e3aef02079e9c10583638520cd0c134dc3a01d" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 628faaee0e2688e50db5724e7a7ff19d17a3cb200a09bbec7dfaa1c9aef65e8e
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "628faaee0e2688e50db5724e7a7ff19d17a3cb200a09bbec7dfaa1c9aef65e8e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "628faaee0e2688e50db5724e7a7ff19d17a3cb200a09bbec7dfaa1c9aef65e8e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "628faaee0e2688e50db5724e7a7ff19d17a3cb200a09bbec7dfaa1c9aef65e8e", kill_on_drop: false }`
[INFO] [stdout] 628faaee0e2688e50db5724e7a7ff19d17a3cb200a09bbec7dfaa1c9aef65e8e
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:20528e8c29e4536546f0102ce88568b16ea7538393a33fcca951030f7af10457" "/opt/rustwide/cargo-home/bin/cargo" "+99e3aef02079e9c10583638520cd0c134dc3a01d" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] a92f32ded07ee95d8a6d386f5ff22f2c6d13d23240ddf78e2088f9c04d2a0483
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "a92f32ded07ee95d8a6d386f5ff22f2c6d13d23240ddf78e2088f9c04d2a0483", kill_on_drop: false }`
[INFO] [stderr]    Compiling bitflags v1.2.1
[INFO] [stderr]    Compiling libc v0.2.95
[INFO] [stderr]    Compiling cfg-if v1.0.0
[INFO] [stderr]    Compiling nix v0.20.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: dereferencing a null pointer
[INFO] [stdout]     --> src/macros.rs:215:14
[INFO] [stdout]      |
[INFO] [stdout] 215  |             &(*(ptr::null() as *const $ty)).$field as *const _ as usize
[INFO] [stdout]      |              ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ this code causes undefined behavior when executed
[INFO] [stdout]      | 
[INFO] [stdout]     ::: src/sys/socket/mod.rs:1698:33
[INFO] [stdout]      |
[INFO] [stdout] 1698 |             let pathlen = len - offset_of!(sockaddr_un, sun_path);
[INFO] [stdout]      |                                 --------------------------------- in this macro invocation
[INFO] [stdout]      |
[INFO] [stdout]      = note: `#[warn(deref_nullptr)]` on by default
[INFO] [stdout]      = note: this warning originates in the macro `offset_of` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: dereferencing a null pointer
[INFO] [stdout]    --> src/macros.rs:215:14
[INFO] [stdout]     |
[INFO] [stdout] 215 |             &(*(ptr::null() as *const $ty)).$field as *const _ as usize
[INFO] [stdout]     |              ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ this code causes undefined behavior when executed
[INFO] [stdout]     | 
[INFO] [stdout]    ::: src/sys/socket/addr.rs:794:24
[INFO] [stdout]     |
[INFO] [stdout] 794 |                 (len + offset_of!(libc::sockaddr_un, sun_path)) as libc::socklen_t
[INFO] [stdout]     |                        --------------------------------------- in this macro invocation
[INFO] [stdout]     |
[INFO] [stdout]     = note: this warning originates in the macro `offset_of` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 9.21s
[INFO] running `Command { std: "docker" "inspect" "a92f32ded07ee95d8a6d386f5ff22f2c6d13d23240ddf78e2088f9c04d2a0483", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "a92f32ded07ee95d8a6d386f5ff22f2c6d13d23240ddf78e2088f9c04d2a0483", kill_on_drop: false }`
[INFO] [stdout] a92f32ded07ee95d8a6d386f5ff22f2c6d13d23240ddf78e2088f9c04d2a0483
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:20528e8c29e4536546f0102ce88568b16ea7538393a33fcca951030f7af10457" "/opt/rustwide/cargo-home/bin/cargo" "+99e3aef02079e9c10583638520cd0c134dc3a01d" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 6c544bf34d2fb96b73e0c4e38a5ae01e28ed41e140195b3e3ff70145086172e1
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "6c544bf34d2fb96b73e0c4e38a5ae01e28ed41e140195b3e3ff70145086172e1", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.27
[INFO] [stderr]    Compiling unicode-xid v0.2.2
[INFO] [stderr]    Compiling remove_dir_all v0.5.3
[INFO] [stderr]    Compiling lazy_static v1.4.0
[INFO] [stderr]    Compiling getrandom v0.2.3
[INFO] [stderr]    Compiling rand_os v0.1.3
[INFO] [stderr]    Compiling errno v0.2.7
[INFO] [stderr]    Compiling iovec v0.1.4
[INFO] [stdout] warning: dereferencing a null pointer
[INFO] [stdout]     --> src/macros.rs:215:14
[INFO] [stdout]      |
[INFO] [stdout] 215  |             &(*(ptr::null() as *const $ty)).$field as *const _ as usize
[INFO] [stdout]      |              ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ this code causes undefined behavior when executed
[INFO] [stdout]      | 
[INFO] [stdout]     ::: src/sys/socket/mod.rs:1698:33
[INFO] [stdout]      |
[INFO] [stdout] 1698 |             let pathlen = len - offset_of!(sockaddr_un, sun_path);
[INFO] [stdout]      |                                 --------------------------------- in this macro invocation
[INFO] [stdout]      |
[INFO] [stdout]      = note: `#[warn(deref_nullptr)]` on by default
[INFO] [stdout]      = note: this warning originates in the macro `offset_of` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: dereferencing a null pointer
[INFO] [stdout]    --> src/macros.rs:215:14
[INFO] [stdout]     |
[INFO] [stdout] 215 |             &(*(ptr::null() as *const $ty)).$field as *const _ as usize
[INFO] [stdout]     |              ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ this code causes undefined behavior when executed
[INFO] [stdout]     | 
[INFO] [stdout]    ::: src/sys/socket/addr.rs:794:24
[INFO] [stdout]     |
[INFO] [stdout] 794 |                 (len + offset_of!(libc::sockaddr_un, sun_path)) as libc::socklen_t
[INFO] [stdout]     |                        --------------------------------------- in this macro invocation
[INFO] [stdout]     |
[INFO] [stdout]     = note: this warning originates in the macro `offset_of` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]    Compiling bytes v0.4.12
[INFO] [stderr]    Compiling rand v0.6.5
[INFO] [stderr]    Compiling rand_core v0.6.2
[INFO] [stderr]    Compiling rand_chacha v0.3.0
[INFO] [stderr]    Compiling quote v1.0.9
[INFO] [stderr]    Compiling rand v0.8.3
[INFO] [stderr]    Compiling syn v1.0.72
[INFO] [stderr]    Compiling tempfile v3.2.0
[INFO] [stderr]    Compiling thiserror-impl v1.0.25
[INFO] [stderr]    Compiling thiserror v1.0.25
[INFO] [stderr]    Compiling caps v0.5.2
[INFO] [stderr]    Compiling nix v0.20.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: panic message is not a string literal
[INFO] [stdout]   --> test/test_poll.rs:14:34
[INFO] [stdout]    |
[INFO] [stdout] 14 |                 Err(e) => panic!(e)
[INFO] [stdout]    |                                  ^
[INFO] [stdout] ...
[INFO] [stdout] 26 |     let nfds = loop_while_eintr!(poll(&mut fds, 100));
[INFO] [stdout]    |                -------------------------------------- in this macro invocation
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(non_fmt_panic)]` on by default
[INFO] [stdout]    = note: this is no longer accepted in Rust 2021
[INFO] [stdout]    = note: this warning originates in the macro `loop_while_eintr` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] help: add a "{}" format string to Display the message
[INFO] [stdout]    |
[INFO] [stdout] 14 |                 Err(e) => panic!("{}", e)
[INFO] [stdout]    |                                  ^^^^^
[INFO] [stdout] help: or use std::panic::panic_any instead
[INFO] [stdout]    |
[INFO] [stdout] 14 |                 Err(e) => std::panic::panic_any(e)
[INFO] [stdout]    |                           ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: panic message is not a string literal
[INFO] [stdout]   --> test/test_poll.rs:14:34
[INFO] [stdout]    |
[INFO] [stdout] 14 |                 Err(e) => panic!(e)
[INFO] [stdout]    |                                  ^
[INFO] [stdout] ...
[INFO] [stdout] 57 |     let nfds = loop_while_eintr!(ppoll(&mut fds, Some(timeout), sigset));
[INFO] [stdout]    |                --------------------------------------------------------- in this macro invocation
[INFO] [stdout]    |
[INFO] [stdout]    = note: this is no longer accepted in Rust 2021
[INFO] [stdout]    = note: this warning originates in the macro `loop_while_eintr` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] help: add a "{}" format string to Display the message
[INFO] [stdout]    |
[INFO] [stdout] 14 |                 Err(e) => panic!("{}", e)
[INFO] [stdout]    |                                  ^^^^^
[INFO] [stdout] help: or use std::panic::panic_any instead
[INFO] [stdout]    |
[INFO] [stdout] 14 |                 Err(e) => std::panic::panic_any(e)
[INFO] [stdout]    |                           ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: dereferencing a null pointer
[INFO] [stdout]     --> src/macros.rs:215:14
[INFO] [stdout]      |
[INFO] [stdout] 215  |             &(*(ptr::null() as *const $ty)).$field as *const _ as usize
[INFO] [stdout]      |              ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ this code causes undefined behavior when executed
[INFO] [stdout]      | 
[INFO] [stdout]     ::: src/sys/socket/mod.rs:1698:33
[INFO] [stdout]      |
[INFO] [stdout] 1698 |             let pathlen = len - offset_of!(sockaddr_un, sun_path);
[INFO] [stdout]      |                                 --------------------------------- in this macro invocation
[INFO] [stdout]      |
[INFO] [stdout] note: the lint level is defined here
[INFO] [stdout]     --> src/lib.rs:11:24
[INFO] [stdout]      |
[INFO] [stdout] 11   | #![cfg_attr(test, deny(warnings))]
[INFO] [stdout]      |                        ^^^^^^^^
[INFO] [stdout]      = note: `#[deny(deref_nullptr)]` implied by `#[deny(warnings)]`
[INFO] [stdout]      = note: this error originates in the macro `offset_of` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: dereferencing a null pointer
[INFO] [stdout]    --> src/macros.rs:215:14
[INFO] [stdout]     |
[INFO] [stdout] 215 |             &(*(ptr::null() as *const $ty)).$field as *const _ as usize
[INFO] [stdout]     |              ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ this code causes undefined behavior when executed
[INFO] [stdout]     | 
[INFO] [stdout]    ::: src/sys/socket/addr.rs:794:24
[INFO] [stdout]     |
[INFO] [stdout] 794 |                 (len + offset_of!(libc::sockaddr_un, sun_path)) as libc::socklen_t
[INFO] [stdout]     |                        --------------------------------------- in this macro invocation
[INFO] [stdout]     |
[INFO] [stdout]     = note: this error originates in the macro `offset_of` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 2 previous errors
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `nix`
[INFO] [stderr] 
[INFO] [stderr] To learn more, run the command again with --verbose.
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stderr] error: build failed
[INFO] running `Command { std: "docker" "inspect" "6c544bf34d2fb96b73e0c4e38a5ae01e28ed41e140195b3e3ff70145086172e1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "6c544bf34d2fb96b73e0c4e38a5ae01e28ed41e140195b3e3ff70145086172e1", kill_on_drop: false }`
[INFO] [stdout] 6c544bf34d2fb96b73e0c4e38a5ae01e28ed41e140195b3e3ff70145086172e1