[INFO] updating cached repository https://github.com/reese/kvs
[INFO] running `"git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "-c" "remote.origin.fetch=refs/heads/*:refs/heads/*" "fetch" "origin" "--force" "--prune"`
[INFO] [stderr] From https://github.com/reese/kvs
[INFO] [stderr]    da26c4e..f46e662  master     -> master
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] f46e662d7ca2a480133f1ce038b034276c3e9369
[INFO] checking reese/kvs against try#c846f8a7dc7af09647f397f047db9cc81acb60bd for pr-69129
[INFO] running `"git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Freese%2Fkvs" "/workspace/builds/worker-11/source"`
[INFO] [stderr] Cloning into '/workspace/builds/worker-11/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/reese/kvs on toolchain c846f8a7dc7af09647f397f047db9cc81acb60bd
[INFO] running `"/workspace/cargo-home/bin/cargo" "+c846f8a7dc7af09647f397f047db9cc81acb60bd" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started tweaking git repo https://github.com/reese/kvs
[INFO] finished tweaking git repo https://github.com/reese/kvs
[INFO] tweaked toml for git repo https://github.com/reese/kvs written to /workspace/builds/worker-11/source/Cargo.toml
[INFO] crate git repo https://github.com/reese/kvs already has a lockfile, it will not be regenerated
[INFO] running `"/workspace/cargo-home/bin/cargo" "+c846f8a7dc7af09647f397f047db9cc81acb60bd" "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-11/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-11/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" "+c846f8a7dc7af09647f397f047db9cc81acb60bd" "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] 4496b6a5ec14fb3c901b6e7770287fdc61ae9908d55a87348a3f9689a1224fea
[INFO] running `"docker" "start" "-a" "4496b6a5ec14fb3c901b6e7770287fdc61ae9908d55a87348a3f9689a1224fea"`
[INFO] [stderr]    Compiling nias v0.4.0
[INFO] [stderr]    Compiling envmnt v0.7.5
[INFO] [stderr]     Checking backtrace v0.3.42
[INFO] [stderr]    Compiling rustversion v1.0.1
[INFO] [stderr]    Compiling syn-mid v0.4.0
[INFO] [stderr]     Checking float-cmp v0.5.3
[INFO] [stderr]    Compiling toml v0.5.5
[INFO] [stderr]     Checking tempfile v3.1.0
[INFO] [stderr]     Checking escargot v0.4.0
[INFO] [stderr]     Checking failure v0.1.6
[INFO] [stderr]     Checking predicates v1.0.2
[INFO] [stderr]     Checking ci_info v0.8.1
[INFO] [stderr]     Checking assert_cmd v0.11.1
[INFO] [stderr]    Compiling proc-macro-error v0.4.4
[INFO] [stderr]    Compiling proc-macro-error-attr v0.4.3
[INFO] [stderr]    Compiling rusty-hook v0.10.1
[INFO] [stderr]    Compiling structopt-derive v0.4.0
[INFO] [stderr]     Checking structopt v0.3.7
[INFO] [stderr]     Checking kvs v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]    --> tests/tests.rs:199:9
[INFO] [stderr]     |
[INFO] [stderr] 199 |     let mut store = KvStore::open(temp_dir.path())?;
[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: variable does not need to be mutable
[INFO] [stderr]    --> tests/tests.rs:240:9
[INFO] [stderr]     |
[INFO] [stderr] 240 |     let mut store = KvStore::open(temp_dir.path())?;
[INFO] [stderr]     |         ----^^^^^
[INFO] [stderr]     |         |
[INFO] [stderr]     |         help: remove this `mut`
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]    --> tests/tests.rs:302:13
[INFO] [stderr]     |
[INFO] [stderr] 302 |         let mut store = KvStore::open(temp_dir.path())?;
[INFO] [stderr]     |             ----^^^^^
[INFO] [stderr]     |             |
[INFO] [stderr]     |             help: remove this `mut`
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 34.18s
[INFO] running `"docker" "inspect" "4496b6a5ec14fb3c901b6e7770287fdc61ae9908d55a87348a3f9689a1224fea"`
[INFO] running `"docker" "rm" "-f" "4496b6a5ec14fb3c901b6e7770287fdc61ae9908d55a87348a3f9689a1224fea"`
[INFO] [stdout] 4496b6a5ec14fb3c901b6e7770287fdc61ae9908d55a87348a3f9689a1224fea