[INFO] fetching crate nix 0.20.0...
[INFO] checking nix-0.20.0 against try#45d8b6e68beee1c9c1ce92ae258a7e02f8f13aa4 for pr-83744
[INFO] extracting crate nix 0.20.0 into /workspace/builds/worker-5/source
[INFO] validating manifest of crates.io crate nix 0.20.0 on toolchain 45d8b6e68beee1c9c1ce92ae258a7e02f8f13aa4
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+45d8b6e68beee1c9c1ce92ae258a7e02f8f13aa4" "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-5/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+45d8b6e68beee1c9c1ce92ae258a7e02f8f13aa4" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+45d8b6e68beee1c9c1ce92ae258a7e02f8f13aa4" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded errno v0.2.7
[INFO] [stderr]   Downloaded caps v0.5.1
[INFO] [stderr]   Downloaded sysctl v0.1.4
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/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" "rustops/crates-build-env@sha256:c46a2d1a26fb48b37929c74ca49dd9409f2375a0a3bdb8fe07617f3ffccaa889" "/opt/rustwide/cargo-home/bin/cargo" "+45d8b6e68beee1c9c1ce92ae258a7e02f8f13aa4" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] f41b4a45347e4d25631d05abbdb3d1b98fd4b8af3f2ce58fa02abf101316a320
[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" "f41b4a45347e4d25631d05abbdb3d1b98fd4b8af3f2ce58fa02abf101316a320", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "f41b4a45347e4d25631d05abbdb3d1b98fd4b8af3f2ce58fa02abf101316a320", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "f41b4a45347e4d25631d05abbdb3d1b98fd4b8af3f2ce58fa02abf101316a320", kill_on_drop: false }`
[INFO] [stdout] f41b4a45347e4d25631d05abbdb3d1b98fd4b8af3f2ce58fa02abf101316a320
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/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" "rustops/crates-build-env@sha256:c46a2d1a26fb48b37929c74ca49dd9409f2375a0a3bdb8fe07617f3ffccaa889" "/opt/rustwide/cargo-home/bin/cargo" "+45d8b6e68beee1c9c1ce92ae258a7e02f8f13aa4" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 181c380cd7884c99a558363cfc20949a08a9b22e752260e5dae6d18e5bcb7534
[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" "181c380cd7884c99a558363cfc20949a08a9b22e752260e5dae6d18e5bcb7534", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.93
[INFO] [stderr]     Checking lazy_static v1.4.0
[INFO] [stderr]    Compiling syn v1.0.69
[INFO] [stderr]     Checking getrandom v0.2.2
[INFO] [stderr]     Checking rand_os v0.1.3
[INFO] [stderr]     Checking errno v0.2.7
[INFO] [stderr]     Checking iovec v0.1.4
[INFO] [stderr]     Checking nix v0.20.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Checking bytes v0.4.12
[INFO] [stderr]     Checking rand v0.6.5
[INFO] [stderr]     Checking rand_core v0.6.2
[INFO] [stderr]     Checking rand_chacha v0.3.0
[INFO] [stderr]     Checking rand v0.8.3
[INFO] [stderr]    Compiling thiserror-impl v1.0.24
[INFO] [stderr]     Checking tempfile v3.2.0
[INFO] [stderr]     Checking thiserror v1.0.24
[INFO] [stderr]     Checking caps v0.5.1
[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 a macro (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 a macro (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: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 22.71s
[INFO] running `Command { std: "docker" "inspect" "181c380cd7884c99a558363cfc20949a08a9b22e752260e5dae6d18e5bcb7534", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "181c380cd7884c99a558363cfc20949a08a9b22e752260e5dae6d18e5bcb7534", kill_on_drop: false }`
[INFO] [stdout] 181c380cd7884c99a558363cfc20949a08a9b22e752260e5dae6d18e5bcb7534