[INFO] cloning repository https://github.com/Vuzi/rust-tests
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/Vuzi/rust-tests" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FVuzi%2Frust-tests", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FVuzi%2Frust-tests'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 07742e7ab9bed9528bcf9ecbb97ca26443f922e4
[INFO] checking Vuzi/rust-tests against beta for pr-78714
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FVuzi%2Frust-tests" "/workspace/builds/worker-8/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-8/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/Vuzi/rust-tests on toolchain beta
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/Vuzi/rust-tests
[INFO] finished tweaking git repo https://github.com/Vuzi/rust-tests
[INFO] tweaked toml for git repo https://github.com/Vuzi/rust-tests written to /workspace/builds/worker-8/source/Cargo.toml
[INFO] crate git repo https://github.com/Vuzi/rust-tests already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/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" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "rustops/crates-build-env@sha256:6eabd152ff4036248d66efda456a36cb33d24b7291b33f25f75140726c88da35" "/opt/rustwide/cargo-home/bin/cargo" "+beta" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 1c81a0ed9e572b3650b5c4992eb103a572dad8394d5010512f3431b009b87446
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "1c81a0ed9e572b3650b5c4992eb103a572dad8394d5010512f3431b009b87446", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "1c81a0ed9e572b3650b5c4992eb103a572dad8394d5010512f3431b009b87446", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "1c81a0ed9e572b3650b5c4992eb103a572dad8394d5010512f3431b009b87446", kill_on_drop: false }`
[INFO] [stdout] 1c81a0ed9e572b3650b5c4992eb103a572dad8394d5010512f3431b009b87446
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/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" "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" "--user" "0:0" "--network" "none" "rustops/crates-build-env@sha256:6eabd152ff4036248d66efda456a36cb33d24b7291b33f25f75140726c88da35" "/opt/rustwide/cargo-home/bin/cargo" "+beta" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] 46db3bc0be8118056bc52d47b09f4a7768471d613f8efa8d0c2af26ec0b1bb6a
[INFO] running `Command { std: "docker" "start" "-a" "46db3bc0be8118056bc52d47b09f4a7768471d613f8efa8d0c2af26ec0b1bb6a", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]    Compiling winapi-build v0.1.1
[INFO] [stderr]     Checking num-traits v0.1.36
[INFO] [stderr]     Checking winapi v0.2.8
[INFO] [stderr]     Checking libc v0.2.17
[INFO] [stderr]    Compiling kernel32-sys v0.2.2
[INFO] [stderr]     Checking rand v0.3.14
[INFO] [stderr]     Checking time v0.1.35
[INFO] [stderr]     Checking num-integer v0.1.32
[INFO] [stderr]     Checking num-iter v0.1.32
[INFO] [stderr]     Checking num v0.1.36
[INFO] [stderr]     Checking chrono v0.2.25
[INFO] [stderr]     Checking bubble_sort v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: function is never used: `sort`
[INFO] [stdout]   --> src/main.rs:59:4
[INFO] [stdout]    |
[INFO] [stdout] 59 | fn sort<T: Ord + Clone>(values: &mut[T], sorter: fn(&mut[T])) {
[INFO] [stdout]    |    ^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `sort`
[INFO] [stdout]   --> src/main.rs:59:4
[INFO] [stdout]    |
[INFO] [stdout] 59 | fn sort<T: Ord + Clone>(values: &mut[T], sorter: fn(&mut[T])) {
[INFO] [stdout]    |    ^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 5.40s
[INFO] running `Command { std: "docker" "inspect" "46db3bc0be8118056bc52d47b09f4a7768471d613f8efa8d0c2af26ec0b1bb6a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "46db3bc0be8118056bc52d47b09f4a7768471d613f8efa8d0c2af26ec0b1bb6a", kill_on_drop: false }`
[INFO] [stdout] 46db3bc0be8118056bc52d47b09f4a7768471d613f8efa8d0c2af26ec0b1bb6a