[INFO] crate one-stack-vec 0.5.1 is already in cache
[INFO] checking one-stack-vec-0.5.1 against master#4007d4ef26eab44bdabc2b7574d032152264d3ad for pr-66919
[INFO] extracting crate one-stack-vec 0.5.1 into /workspace/builds/worker-10/source
[INFO] validating manifest of crates.io crate one-stack-vec 0.5.1 on toolchain 4007d4ef26eab44bdabc2b7574d032152264d3ad
[INFO] running `"/workspace/cargo-home/bin/cargo" "+4007d4ef26eab44bdabc2b7574d032152264d3ad" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started tweaking crates.io crate one-stack-vec 0.5.1
[INFO] finished tweaking crates.io crate one-stack-vec 0.5.1
[INFO] tweaked toml for crates.io crate one-stack-vec 0.5.1 written to /workspace/builds/worker-10/source/Cargo.toml
[INFO] running `"/workspace/cargo-home/bin/cargo" "+4007d4ef26eab44bdabc2b7574d032152264d3ad" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"`
[INFO] running `"/workspace/cargo-home/bin/cargo" "+4007d4ef26eab44bdabc2b7574d032152264d3ad" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-10/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-10/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" "+4007d4ef26eab44bdabc2b7574d032152264d3ad" "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] abfc52ca13d3a45b313f0c692281f7d10413c7a7d204f83df1670ad9fa9d6510
[INFO] running `"docker" "start" "-a" "abfc52ca13d3a45b313f0c692281f7d10413c7a7d204f83df1670ad9fa9d6510"`
[INFO] [stderr]     Checking one-stack-vec v0.5.1 (/opt/rustwide/workdir)
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]    --> src/lib.rs:217:17
[INFO] [stderr]     |
[INFO] [stderr] 217 |             let mut tmp_vec = $crate::OneStackVec::new();
[INFO] [stderr]     |                 ----^^^^^^^
[INFO] [stderr]     |                 |
[INFO] [stderr]     |                 help: remove this `mut`
[INFO] [stderr] ...
[INFO] [stderr] 233 |         let item1: OneStackVec<isize> = one_stack_vec![];
[INFO] [stderr]     |                                         ---------------- in this macro invocation
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(unused_mut)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]    --> src/lib.rs:217:17
[INFO] [stderr]     |
[INFO] [stderr] 217 |             let mut tmp_vec = $crate::OneStackVec::new();
[INFO] [stderr]     |                 ----^^^^^^^
[INFO] [stderr]     |                 |
[INFO] [stderr]     |                 help: remove this `mut`
[INFO] [stderr] ...
[INFO] [stderr] 234 |         let item2: OneStackVec<isize> = one_stack_vec![];
[INFO] [stderr]     |                                         ---------------- in this macro invocation
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]    --> src/lib.rs:217:17
[INFO] [stderr]     |
[INFO] [stderr] 217 |             let mut tmp_vec = $crate::OneStackVec::new();
[INFO] [stderr]     |                 ----^^^^^^^
[INFO] [stderr]     |                 |
[INFO] [stderr]     |                 help: remove this `mut`
[INFO] [stderr] ...
[INFO] [stderr] 238 |         let item2 = one_stack_vec![];
[INFO] [stderr]     |                     ---------------- in this macro invocation
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]    --> src/lib.rs:217:17
[INFO] [stderr]     |
[INFO] [stderr] 217 |             let mut tmp_vec = $crate::OneStackVec::new();
[INFO] [stderr]     |                 ----^^^^^^^
[INFO] [stderr]     |                 |
[INFO] [stderr]     |                 help: remove this `mut`
[INFO] [stderr] ...
[INFO] [stderr] 262 |         let vec: OneStackVec<u32> = one_stack_vec![];
[INFO] [stderr]     |                                     ---------------- in this macro invocation
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.84s
[INFO] running `"docker" "inspect" "abfc52ca13d3a45b313f0c692281f7d10413c7a7d204f83df1670ad9fa9d6510"`
[INFO] running `"docker" "rm" "-f" "abfc52ca13d3a45b313f0c692281f7d10413c7a7d204f83df1670ad9fa9d6510"`
[INFO] [stdout] abfc52ca13d3a45b313f0c692281f7d10413c7a7d204f83df1670ad9fa9d6510