[INFO] updating cached repository https://github.com/lilydjwg/pid_children
[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] a0b9f138fa0c4eb77566afc763c114153cb5c1a9
[INFO] testing lilydjwg/pid_children against 1.38.0 for beta-1.39-1
[INFO] running `"git" "clone" "work/cache/git-repos/https%3A%2F%2Fgithub.com%2Flilydjwg%2Fpid_children" "work/builds/worker-4/source"`
[INFO] [stderr] Cloning into 'work/builds/worker-4/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/lilydjwg/pid_children 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/lilydjwg/pid_children
[INFO] finished tweaking git repo https://github.com/lilydjwg/pid_children
[INFO] tweaked toml for git repo https://github.com/lilydjwg/pid_children written to work/builds/worker-4/source/Cargo.toml
[INFO] crate git repo https://github.com/lilydjwg/pid_children 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-4/target:/opt/rustwide/target:rw,Z" "-v" "/big/crater/work/builds/worker-4/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] b4760b9068e55e88ae4ba4fbbbd0c4d1dbbd0aa8cc19c5a8087464d12df714c7
[INFO] running `"docker" "start" "-a" "b4760b9068e55e88ae4ba4fbbbd0c4d1dbbd0aa8cc19c5a8087464d12df714c7"`
[INFO] [stderr]    Compiling pid_children v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]   --> src/main.rs:12:21
[INFO] [stderr]    |
[INFO] [stderr] 12 |                 let mut children = children_map.entry(ppid).or_insert_with(Vec::new);
[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 2.29s
[INFO] running `"docker" "inspect" "b4760b9068e55e88ae4ba4fbbbd0c4d1dbbd0aa8cc19c5a8087464d12df714c7"`
[INFO] running `"docker" "rm" "-f" "b4760b9068e55e88ae4ba4fbbbd0c4d1dbbd0aa8cc19c5a8087464d12df714c7"`
[INFO] [stdout] b4760b9068e55e88ae4ba4fbbbd0c4d1dbbd0aa8cc19c5a8087464d12df714c7
[INFO] running `"docker" "create" "-v" "/big/crater/work/builds/worker-4/target:/opt/rustwide/target:rw,Z" "-v" "/big/crater/work/builds/worker-4/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] d4c554727264772fee32de0095cc65c5562b849c07cdf6fc1579d26dc48ecd64
[INFO] running `"docker" "start" "-a" "d4c554727264772fee32de0095cc65c5562b849c07cdf6fc1579d26dc48ecd64"`
[INFO] [stderr]    Compiling pid_children v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]   --> src/main.rs:12:21
[INFO] [stderr]    |
[INFO] [stderr] 12 |                 let mut children = children_map.entry(ppid).or_insert_with(Vec::new);
[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 2.81s
[INFO] running `"docker" "inspect" "d4c554727264772fee32de0095cc65c5562b849c07cdf6fc1579d26dc48ecd64"`
[INFO] running `"docker" "rm" "-f" "d4c554727264772fee32de0095cc65c5562b849c07cdf6fc1579d26dc48ecd64"`
[INFO] [stdout] d4c554727264772fee32de0095cc65c5562b849c07cdf6fc1579d26dc48ecd64
[INFO] running `"docker" "create" "-v" "/big/crater/work/builds/worker-4/target:/opt/rustwide/target:rw,Z" "-v" "/big/crater/work/builds/worker-4/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] afdedef8f2702ef61c36b3fb9bf8d9bbad911d598abcb1fd2659d4dab13922b8
[INFO] running `"docker" "start" "-a" "afdedef8f2702ef61c36b3fb9bf8d9bbad911d598abcb1fd2659d4dab13922b8"`
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.00s
[INFO] [stderr]      Running /opt/rustwide/target/debug/deps/pid_children-9f67ad3511ccb911
[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" "afdedef8f2702ef61c36b3fb9bf8d9bbad911d598abcb1fd2659d4dab13922b8"`
[INFO] running `"docker" "rm" "-f" "afdedef8f2702ef61c36b3fb9bf8d9bbad911d598abcb1fd2659d4dab13922b8"`
[INFO] [stdout] afdedef8f2702ef61c36b3fb9bf8d9bbad911d598abcb1fd2659d4dab13922b8