[INFO] updating cached repository https://github.com/dhatch/cache-rust
[INFO] running `"git" "-c" "credential.helper=" "-c" "credential.helper=/big/crater/work/cargo-home/bin/git-credential-null" "-c" "remote.origin.fetch=refs/heads/*:refs/heads/*" "fetch" "origin" "--force" "--prune"`
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] 244b5258f6389f1b17755dbbb99de8c07c5c24b5
[INFO] testing dhatch/cache-rust against 1.38.0 for beta-1.39-1
[INFO] running `"git" "clone" "work/cache/git-repos/https%3A%2F%2Fgithub.com%2Fdhatch%2Fcache-rust" "work/builds/worker-0/source"`
[INFO] [stderr] Cloning into 'work/builds/worker-0/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/dhatch/cache-rust on toolchain 1.38.0
[INFO] running `"/big/crater/work/cargo-home/bin/cargo" "+1.38.0" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started tweaking git repo https://github.com/dhatch/cache-rust
[INFO] removed workspace from git repo https://github.com/dhatch/cache-rust
[INFO] finished tweaking git repo https://github.com/dhatch/cache-rust
[INFO] tweaked toml for git repo https://github.com/dhatch/cache-rust written to work/builds/worker-0/source/Cargo.toml
[INFO] crate git repo https://github.com/dhatch/cache-rust already has a lockfile, it will not be regenerated
[INFO] running `"/big/crater/work/cargo-home/bin/cargo" "+1.38.0" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"docker" "create" "-v" "/big/crater/work/builds/worker-0/target:/opt/rustwide/target:rw,Z" "-v" "/big/crater/work/builds/worker-0/source:/opt/rustwide/workdir:ro,Z" "-v" "/big/crater/work/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/big/crater/work/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "MAP_USER_ID=1000" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=warn" "-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" "+1.38.0" "build" "--frozen"`
[INFO] [stdout] 3eec7c76e4a9df0f063090db189f46bc58962db06116edd927ffa6453a9b6c91
[INFO] running `"docker" "start" "-a" "3eec7c76e4a9df0f063090db189f46bc58962db06116edd927ffa6453a9b6c91"`
[INFO] [stderr]    Compiling intrusive-collections v0.7.8
[INFO] [stderr]    Compiling cache v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr] warning: unused import: `std::mem`
[INFO] [stderr]  --> src/cache.rs:2:5
[INFO] [stderr]   |
[INFO] [stderr] 2 | use std::mem;
[INFO] [stderr]   |     ^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.60s
[INFO] running `"docker" "inspect" "3eec7c76e4a9df0f063090db189f46bc58962db06116edd927ffa6453a9b6c91"`
[INFO] running `"docker" "rm" "-f" "3eec7c76e4a9df0f063090db189f46bc58962db06116edd927ffa6453a9b6c91"`
[INFO] [stdout] 3eec7c76e4a9df0f063090db189f46bc58962db06116edd927ffa6453a9b6c91
[INFO] running `"docker" "create" "-v" "/big/crater/work/builds/worker-0/target:/opt/rustwide/target:rw,Z" "-v" "/big/crater/work/builds/worker-0/source:/opt/rustwide/workdir:ro,Z" "-v" "/big/crater/work/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/big/crater/work/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "MAP_USER_ID=1000" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=warn" "-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" "+1.38.0" "test" "--frozen" "--no-run"`
[INFO] [stdout] f3f44dd128a3fd3bb8767f3d2fb43353115f1523c82fe97f5588b5fddf27de46
[INFO] running `"docker" "start" "-a" "f3f44dd128a3fd3bb8767f3d2fb43353115f1523c82fe97f5588b5fddf27de46"`
[INFO] [stderr]    Compiling bencher v0.1.5
[INFO] [stderr]    Compiling rand_os v0.1.3
[INFO] [stderr]    Compiling rand v0.6.5
[INFO] [stderr]    Compiling cache v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr] warning: unused import: `std::mem`
[INFO] [stderr]  --> src/cache.rs:2:5
[INFO] [stderr]   |
[INFO] [stderr] 2 | use std::mem;
[INFO] [stderr]   |     ^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `k2`
[INFO] [stderr]    --> src/cache.rs:246:13
[INFO] [stderr]     |
[INFO] [stderr] 246 |         let k2 = "key2";
[INFO] [stderr]     |             ^^ help: consider prefixing with an underscore: `_k2`
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(unused_variables)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]    --> src/cache.rs:220:13
[INFO] [stderr]     |
[INFO] [stderr] 220 |         let mut cache: LRUCache<&str, u64> = LRUCache::new(10);
[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]     Finished dev [unoptimized + debuginfo] target(s) in 2.44s
[INFO] running `"docker" "inspect" "f3f44dd128a3fd3bb8767f3d2fb43353115f1523c82fe97f5588b5fddf27de46"`
[INFO] running `"docker" "rm" "-f" "f3f44dd128a3fd3bb8767f3d2fb43353115f1523c82fe97f5588b5fddf27de46"`
[INFO] [stdout] f3f44dd128a3fd3bb8767f3d2fb43353115f1523c82fe97f5588b5fddf27de46
[INFO] running `"docker" "create" "-v" "/big/crater/work/builds/worker-0/target:/opt/rustwide/target:rw,Z" "-v" "/big/crater/work/builds/worker-0/source:/opt/rustwide/workdir:ro,Z" "-v" "/big/crater/work/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/big/crater/work/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "MAP_USER_ID=1000" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=warn" "-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" "+1.38.0" "test" "--frozen"`
[INFO] [stdout] 1b59307719b2cade90f1ba5ac0bc7c819bbd008c62289298adbc620428635387
[INFO] running `"docker" "start" "-a" "1b59307719b2cade90f1ba5ac0bc7c819bbd008c62289298adbc620428635387"`
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.01s
[INFO] [stderr]      Running /opt/rustwide/target/debug/deps/cache-51a56df77d2b9e0c
[INFO] [stdout] 
[INFO] [stdout] running 4 tests
[INFO] [stdout] test cache::tests::miss ... ok
[INFO] [stdout] test cache::tests::hit ... ok
[INFO] [stdout] test cache::tests::evict ... ok
[INFO] [stdout] test cache::tests::replace ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 4 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
[INFO] [stdout] 
[INFO] [stderr]    Doc-tests cache
[INFO] [stdout] 
[INFO] [stdout] running 0 tests
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
[INFO] [stdout] 
[INFO] running `"docker" "inspect" "1b59307719b2cade90f1ba5ac0bc7c819bbd008c62289298adbc620428635387"`
[INFO] running `"docker" "rm" "-f" "1b59307719b2cade90f1ba5ac0bc7c819bbd008c62289298adbc620428635387"`
[INFO] [stdout] 1b59307719b2cade90f1ba5ac0bc7c819bbd008c62289298adbc620428635387