[INFO] cloning repository https://github.com/berkus/mre-write_to
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/berkus/mre-write_to" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fberkus%2Fmre-write_to", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fberkus%2Fmre-write_to'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] f0dca907fc0573b643ad076f12c3f0515665cabf
[INFO] testing berkus/mre-write_to against try#722e1797249a965b6335aebd65d777f917e498f1 for pr-91031
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fberkus%2Fmre-write_to" "/workspace/builds/worker-58/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-58/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/berkus/mre-write_to 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/berkus/mre-write_to
[INFO] finished tweaking git repo https://github.com/berkus/mre-write_to
[INFO] tweaked toml for git repo https://github.com/berkus/mre-write_to written to /workspace/builds/worker-58/source/Cargo.toml
[INFO] crate git repo https://github.com/berkus/mre-write_to 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-58/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-58/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] 4fa0406b81a9f05599e63b017a9ce1f4b4ea56de08d48e902813dc6e4fda97ae
[INFO] running `Command { std: "docker" "start" "-a" "4fa0406b81a9f05599e63b017a9ce1f4b4ea56de08d48e902813dc6e4fda97ae", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "4fa0406b81a9f05599e63b017a9ce1f4b4ea56de08d48e902813dc6e4fda97ae", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "4fa0406b81a9f05599e63b017a9ce1f4b4ea56de08d48e902813dc6e4fda97ae", kill_on_drop: false }`
[INFO] [stdout] 4fa0406b81a9f05599e63b017a9ce1f4b4ea56de08d48e902813dc6e4fda97ae
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-58/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-58/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] 5cee64c9476b36fc8a5b32425891ef74faec75861f4b8519cd53f9327ea5aab1
[INFO] running `Command { std: "docker" "start" "-a" "5cee64c9476b36fc8a5b32425891ef74faec75861f4b8519cd53f9327ea5aab1", kill_on_drop: false }`
[INFO] [stderr]    Compiling test-write-to v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.64s
[INFO] running `Command { std: "docker" "inspect" "5cee64c9476b36fc8a5b32425891ef74faec75861f4b8519cd53f9327ea5aab1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "5cee64c9476b36fc8a5b32425891ef74faec75861f4b8519cd53f9327ea5aab1", kill_on_drop: false }`
[INFO] [stdout] 5cee64c9476b36fc8a5b32425891ef74faec75861f4b8519cd53f9327ea5aab1
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-58/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-58/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] 49104cee174b4f62d690694d4576ff003a9edc1a9ca8c2aaeeb712e00e95e776
[INFO] running `Command { std: "docker" "start" "-a" "49104cee174b4f62d690694d4576ff003a9edc1a9ca8c2aaeeb712e00e95e776", kill_on_drop: false }`
[INFO] [stderr]    Compiling test-write-to v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.49s
[INFO] running `Command { std: "docker" "inspect" "49104cee174b4f62d690694d4576ff003a9edc1a9ca8c2aaeeb712e00e95e776", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "49104cee174b4f62d690694d4576ff003a9edc1a9ca8c2aaeeb712e00e95e776", kill_on_drop: false }`
[INFO] [stdout] 49104cee174b4f62d690694d4576ff003a9edc1a9ca8c2aaeeb712e00e95e776
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-58/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-58/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] 61955e4f60a435d74a9812f1785465747c6f006ffd9e98e83c8598e8a0c63737
[INFO] running `Command { std: "docker" "start" "-a" "61955e4f60a435d74a9812f1785465747c6f006ffd9e98e83c8598e8a0c63737", kill_on_drop: false }`
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.05s
[INFO] [stderr]      Running unittests (/opt/rustwide/target/debug/deps/test_write_to-d38e4fefc43b7661)
[INFO] [stdout] 
[INFO] [stdout] running 1 test
[INFO] [stdout] Converting to str
[INFO] [stdout] test tests::write_to_works ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 1 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "61955e4f60a435d74a9812f1785465747c6f006ffd9e98e83c8598e8a0c63737", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "61955e4f60a435d74a9812f1785465747c6f006ffd9e98e83c8598e8a0c63737", kill_on_drop: false }`
[INFO] [stdout] 61955e4f60a435d74a9812f1785465747c6f006ffd9e98e83c8598e8a0c63737