[INFO] cloning repository https://github.com/matiasop/parallel-merge-sort
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/matiasop/parallel-merge-sort" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fmatiasop%2Fparallel-merge-sort", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fmatiasop%2Fparallel-merge-sort'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 421f705ecf885a5a85889e942791b4488305c524
[INFO] testing matiasop/parallel-merge-sort against try#722e1797249a965b6335aebd65d777f917e498f1 for pr-91031
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fmatiasop%2Fparallel-merge-sort" "/workspace/builds/worker-0/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-0/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/matiasop/parallel-merge-sort on toolchain 722e1797249a965b6335aebd65d777f917e498f1
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+722e1797249a965b6335aebd65d777f917e498f1" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/matiasop/parallel-merge-sort
[INFO] finished tweaking git repo https://github.com/matiasop/parallel-merge-sort
[INFO] tweaked toml for git repo https://github.com/matiasop/parallel-merge-sort written to /workspace/builds/worker-0/source/Cargo.toml
[INFO] crate git repo https://github.com/matiasop/parallel-merge-sort already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+722e1797249a965b6335aebd65d777f917e498f1" "fetch" "--manifest-path" "Cargo.toml", 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] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/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" "ghcr.io/rust-lang/crates-build-env/linux@sha256:5736fa189c1c60b01babf4b8b698fe57b6ecc41933a7ff2e0b8d7a221459412b" "/opt/rustwide/cargo-home/bin/cargo" "+722e1797249a965b6335aebd65d777f917e498f1" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 62d7c5c87b0a991a2e58dba717bb9476716b655698bbe67ab843635cd5b70715
[INFO] running `Command { std: "docker" "start" "-a" "62d7c5c87b0a991a2e58dba717bb9476716b655698bbe67ab843635cd5b70715", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "62d7c5c87b0a991a2e58dba717bb9476716b655698bbe67ab843635cd5b70715", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "62d7c5c87b0a991a2e58dba717bb9476716b655698bbe67ab843635cd5b70715", kill_on_drop: false }`
[INFO] [stdout] 62d7c5c87b0a991a2e58dba717bb9476716b655698bbe67ab843635cd5b70715
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/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" "ghcr.io/rust-lang/crates-build-env/linux@sha256:5736fa189c1c60b01babf4b8b698fe57b6ecc41933a7ff2e0b8d7a221459412b" "/opt/rustwide/cargo-home/bin/cargo" "+722e1797249a965b6335aebd65d777f917e498f1" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 2502965c215d0f7a397d5bbe5795f9e925090256c8417ee616aa5c3c9b48c274
[INFO] running `Command { std: "docker" "start" "-a" "2502965c215d0f7a397d5bbe5795f9e925090256c8417ee616aa5c3c9b48c274", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.98
[INFO] [stderr]    Compiling cfg-if v1.0.0
[INFO] [stderr]    Compiling getrandom v0.2.3
[INFO] [stderr]    Compiling num_cpus v1.13.0
[INFO] [stderr]    Compiling threadpool v1.8.1
[INFO] [stderr]    Compiling rand_core v0.6.3
[INFO] [stderr]    Compiling rand_chacha v0.3.1
[INFO] [stderr]    Compiling rand v0.8.4
[INFO] [stderr]    Compiling parallel-merge-sort v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 5.81s
[INFO] running `Command { std: "docker" "inspect" "2502965c215d0f7a397d5bbe5795f9e925090256c8417ee616aa5c3c9b48c274", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "2502965c215d0f7a397d5bbe5795f9e925090256c8417ee616aa5c3c9b48c274", kill_on_drop: false }`
[INFO] [stdout] 2502965c215d0f7a397d5bbe5795f9e925090256c8417ee616aa5c3c9b48c274
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/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" "ghcr.io/rust-lang/crates-build-env/linux@sha256:5736fa189c1c60b01babf4b8b698fe57b6ecc41933a7ff2e0b8d7a221459412b" "/opt/rustwide/cargo-home/bin/cargo" "+722e1797249a965b6335aebd65d777f917e498f1" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 3784be64f961a41b34fcab5d86947219488e22efad59c8c6d572e7e3d4d51717
[INFO] running `Command { std: "docker" "start" "-a" "3784be64f961a41b34fcab5d86947219488e22efad59c8c6d572e7e3d4d51717", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]    Compiling parallel-merge-sort v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 19.76s
[INFO] running `Command { std: "docker" "inspect" "3784be64f961a41b34fcab5d86947219488e22efad59c8c6d572e7e3d4d51717", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "3784be64f961a41b34fcab5d86947219488e22efad59c8c6d572e7e3d4d51717", kill_on_drop: false }`
[INFO] [stdout] 3784be64f961a41b34fcab5d86947219488e22efad59c8c6d572e7e3d4d51717
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/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" "ghcr.io/rust-lang/crates-build-env/linux@sha256:5736fa189c1c60b01babf4b8b698fe57b6ecc41933a7ff2e0b8d7a221459412b" "/opt/rustwide/cargo-home/bin/cargo" "+722e1797249a965b6335aebd65d777f917e498f1" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] c0285ff01ac5c11f3e774dbda84dba3eb05439925a429a0307cd7adfb7316e2a
[INFO] running `Command { std: "docker" "start" "-a" "c0285ff01ac5c11f3e774dbda84dba3eb05439925a429a0307cd7adfb7316e2a", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.45s
[INFO] [stderr]      Running unittests (/opt/rustwide/target/debug/deps/parallel_merge_sort-8412e59d5a5ba0a1)
[INFO] [stdout] 
[INFO] [stdout] running 10 tests
[INFO] [stdout] test tests::repeated_elements ... ok
[INFO] [stdout] test tests::test_base_case ... ok
[INFO] [stdout] test parallel_tests::arrays_if_len_1 ... ok
[INFO] [stdout] test tests::totally_backwards ... ok
[INFO] [stdout] test parallel_tests::one_thread ... ok
[INFO] [stdout] test tests::it_works ... ok
[INFO] [stdout] test tests::already_ordered ... ok
[INFO] [stdout] test parallel_tests::n_workers_power_of_2 - should panic ... ok
[INFO] [stdout] test parallel_tests::wrong_length - should panic ... ok
[INFO] [stdout] test parallel_tests::n_jobs_power_of_2 - should panic ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 10 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.03s
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "c0285ff01ac5c11f3e774dbda84dba3eb05439925a429a0307cd7adfb7316e2a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "c0285ff01ac5c11f3e774dbda84dba3eb05439925a429a0307cd7adfb7316e2a", kill_on_drop: false }`
[INFO] [stdout] c0285ff01ac5c11f3e774dbda84dba3eb05439925a429a0307cd7adfb7316e2a