[INFO] fetching crate users 0.11.0...
[INFO] checking users-0.11.0 against master#35936c4839dd272646394779d151e060d0f6b3ac for pr-122960-1
[INFO] extracting crate users 0.11.0 into /workspace/builds/worker-5-tc1/source
[INFO] validating manifest of crates.io crate users 0.11.0 on toolchain 35936c4839dd272646394779d151e060d0f6b3ac
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+35936c4839dd272646394779d151e060d0f6b3ac" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate users 0.11.0
[INFO] finished tweaking crates.io crate users 0.11.0
[INFO] tweaked toml for crates.io crate users 0.11.0 written to /workspace/builds/worker-5-tc1/source/Cargo.toml
[INFO] crate crates.io crate users 0.11.0 already has a lockfile, it will not be regenerated
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+35936c4839dd272646394779d151e060d0f6b3ac" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded libc v0.2.68
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc1/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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+35936c4839dd272646394779d151e060d0f6b3ac" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 36909f5801c6c303b8aadda9489c9e0f8ab4c8f72cf907e79e41a159802bce28
[INFO] running `Command { std: "docker" "start" "-a" "36909f5801c6c303b8aadda9489c9e0f8ab4c8f72cf907e79e41a159802bce28", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "36909f5801c6c303b8aadda9489c9e0f8ab4c8f72cf907e79e41a159802bce28", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "36909f5801c6c303b8aadda9489c9e0f8ab4c8f72cf907e79e41a159802bce28", kill_on_drop: false }`
[INFO] [stdout] 36909f5801c6c303b8aadda9489c9e0f8ab4c8f72cf907e79e41a159802bce28
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc1/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" "RUSTDOCFLAGS=--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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+35936c4839dd272646394779d151e060d0f6b3ac" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] b04a9093f8c437403f0cfeaa1f87a199fd1b19d2443043e4d0d827f2d583af3b
[INFO] running `Command { std: "docker" "start" "-a" "b04a9093f8c437403f0cfeaa1f87a199fd1b19d2443043e4d0d827f2d583af3b", kill_on_drop: false }`
[INFO] [stderr]    Compiling log v0.4.8
[INFO] [stderr]    Compiling libc v0.2.68
[INFO] [stderr]     Checking cfg-if v0.1.10
[INFO] [stderr]     Checking env_logger v0.7.1
[INFO] [stderr]     Checking users v0.11.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: trivial numeric cast: `u32` as `u32`
[INFO] [stdout]    --> src/base.rs:805:46
[INFO] [stdout]     |
[INFO] [stdout] 805 |             .filter_map(|i| get_group_by_gid(i as gid_t))
[INFO] [stdout]     |                                              ^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = help: cast can be replaced by coercion; this might require a temporary variable
[INFO] [stdout] note: the lint level is defined here
[INFO] [stdout]    --> src/lib.rs:4:9
[INFO] [stdout]     |
[INFO] [stdout] 4   | #![warn(trivial_numeric_casts)]
[INFO] [stdout]     |         ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trivial numeric cast: `u32` as `u32`
[INFO] [stdout]    --> src/base.rs:805:46
[INFO] [stdout]     |
[INFO] [stdout] 805 |             .filter_map(|i| get_group_by_gid(i as gid_t))
[INFO] [stdout]     |                                              ^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = help: cast can be replaced by coercion; this might require a temporary variable
[INFO] [stdout] note: the lint level is defined here
[INFO] [stdout]    --> src/lib.rs:4:9
[INFO] [stdout]     |
[INFO] [stdout] 4   | #![warn(trivial_numeric_casts)]
[INFO] [stdout]     |         ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `drop` is imported redundantly
[INFO] [stdout]  --> examples/switching.rs:4:5
[INFO] [stdout]   |
[INFO] [stdout] 4 | use std::mem::drop;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^
[INFO] [stdout]  --> /rustc/35936c4839dd272646394779d151e060d0f6b3ac/library/std/src/prelude/mod.rs:105:13
[INFO] [stdout]   |
[INFO] [stdout]   = note: the item `drop` is already defined here
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 1.10s
[INFO] running `Command { std: "docker" "inspect" "b04a9093f8c437403f0cfeaa1f87a199fd1b19d2443043e4d0d827f2d583af3b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "b04a9093f8c437403f0cfeaa1f87a199fd1b19d2443043e4d0d827f2d583af3b", kill_on_drop: false }`
[INFO] [stdout] b04a9093f8c437403f0cfeaa1f87a199fd1b19d2443043e4d0d827f2d583af3b