[INFO] crate bitfields 0.2.0 is already in cache
[INFO] checking bitfields-0.2.0 against master#fdc0011561c6365c596dfd8fa1ef388162bc89c7 for pr-66504-1
[INFO] extracting crate bitfields 0.2.0 into /workspace/builds/worker-5/source
[INFO] validating manifest of crates.io crate bitfields 0.2.0 on toolchain fdc0011561c6365c596dfd8fa1ef388162bc89c7
[INFO] running `"/workspace/cargo-home/bin/cargo" "+fdc0011561c6365c596dfd8fa1ef388162bc89c7" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started tweaking crates.io crate bitfields 0.2.0
[INFO] finished tweaking crates.io crate bitfields 0.2.0
[INFO] tweaked toml for crates.io crate bitfields 0.2.0 written to /workspace/builds/worker-5/source/Cargo.toml
[INFO] running `"/workspace/cargo-home/bin/cargo" "+fdc0011561c6365c596dfd8fa1ef388162bc89c7" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"`
[INFO] running `"/workspace/cargo-home/bin/cargo" "+fdc0011561c6365c596dfd8fa1ef388162bc89c7" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `"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" "MAP_USER_ID=0" "-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" "--network" "none" "rustops/crates-build-env" "/opt/rustwide/cargo-home/bin/cargo" "+fdc0011561c6365c596dfd8fa1ef388162bc89c7" "check" "--frozen" "--all" "--all-targets"`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] 774ec962815460f5f22864df51b6ee42c59dead17e41002201a1020f12d379e9
[INFO] running `"docker" "start" "-a" "774ec962815460f5f22864df51b6ee42c59dead17e41002201a1020f12d379e9"`
[INFO] [stderr]     Checking bitfields v0.2.0 (/opt/rustwide/workdir)
[INFO] [stderr] warning: function is never used: `byte_bit_offset`
[INFO] [stderr]    --> src/lib.rs:105:12
[INFO] [stderr]     |
[INFO] [stderr] 105 |     pub fn byte_bit_offset(idx: usize) -> (usize, usize) {
[INFO] [stderr]     |            ^^^^^^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `test_bit`
[INFO] [stderr]    --> src/lib.rs:113:12
[INFO] [stderr]     |
[INFO] [stderr] 113 |     pub fn test_bit(target: &u8, pos: usize) -> bool {
[INFO] [stderr]     |            ^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `set_bit`
[INFO] [stderr]    --> src/lib.rs:117:12
[INFO] [stderr]     |
[INFO] [stderr] 117 |     pub fn set_bit(target: &mut u8, pos: usize) {
[INFO] [stderr]     |            ^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `unset_bit`
[INFO] [stderr]    --> src/lib.rs:125:12
[INFO] [stderr]     |
[INFO] [stderr] 125 |     pub fn unset_bit(target: &mut u8, pos: usize) {
[INFO] [stderr]     |            ^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `toggle_bit`
[INFO] [stderr]    --> src/lib.rs:129:12
[INFO] [stderr]     |
[INFO] [stderr] 129 |     pub fn toggle_bit(target: &mut u8, pos: usize) {
[INFO] [stderr]     |            ^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]    --> src/lib.rs:394:13
[INFO] [stderr]     |
[INFO] [stderr] 394 |         let mut storage = vec![0u8];
[INFO] [stderr]     |             ----^^^^^^^
[INFO] [stderr]     |             |
[INFO] [stderr]     |             help: remove this `mut`
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(unused_mut)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `byte_bit_offset`
[INFO] [stderr]    --> src/lib.rs:105:12
[INFO] [stderr]     |
[INFO] [stderr] 105 |     pub fn byte_bit_offset(idx: usize) -> (usize, usize) {
[INFO] [stderr]     |            ^^^^^^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.62s
[INFO] running `"docker" "inspect" "774ec962815460f5f22864df51b6ee42c59dead17e41002201a1020f12d379e9"`
[INFO] running `"docker" "rm" "-f" "774ec962815460f5f22864df51b6ee42c59dead17e41002201a1020f12d379e9"`
[INFO] [stdout] 774ec962815460f5f22864df51b6ee42c59dead17e41002201a1020f12d379e9