[INFO] cloning repository https://github.com/clay3075/rust_tail
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/clay3075/rust_tail" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fclay3075%2Frust_tail", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fclay3075%2Frust_tail'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] bddd6d9b05d497240d89ffcafbe515fa1dc9d762
[INFO] testing clay3075/rust_tail against master#62efba8a050c64249dab942951bb28f710208bc8 for pr-90799
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fclay3075%2Frust_tail" "/workspace/builds/worker-15/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-15/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/clay3075/rust_tail on toolchain 62efba8a050c64249dab942951bb28f710208bc8
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+62efba8a050c64249dab942951bb28f710208bc8" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/clay3075/rust_tail
[INFO] finished tweaking git repo https://github.com/clay3075/rust_tail
[INFO] tweaked toml for git repo https://github.com/clay3075/rust_tail written to /workspace/builds/worker-15/source/Cargo.toml
[INFO] crate git repo https://github.com/clay3075/rust_tail already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+62efba8a050c64249dab942951bb28f710208bc8" "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-15/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-15/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:e8397a04204aaf8b9f284182a6f9e27a3c2e67044d0943b4415b160bfc957681" "/opt/rustwide/cargo-home/bin/cargo" "+62efba8a050c64249dab942951bb28f710208bc8" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 10be0f3de00c0975497de2e76591e43c0970d583ff99f2a014b030e7c196d3e0
[INFO] running `Command { std: "docker" "start" "-a" "10be0f3de00c0975497de2e76591e43c0970d583ff99f2a014b030e7c196d3e0", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "10be0f3de00c0975497de2e76591e43c0970d583ff99f2a014b030e7c196d3e0", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "10be0f3de00c0975497de2e76591e43c0970d583ff99f2a014b030e7c196d3e0", kill_on_drop: false }`
[INFO] [stdout] 10be0f3de00c0975497de2e76591e43c0970d583ff99f2a014b030e7c196d3e0
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-15/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-15/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:e8397a04204aaf8b9f284182a6f9e27a3c2e67044d0943b4415b160bfc957681" "/opt/rustwide/cargo-home/bin/cargo" "+62efba8a050c64249dab942951bb28f710208bc8" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] bc00da60faf5507e7495ec2d47ca2cfaa81b10107886ac5dcc638ee7e88a9335
[INFO] running `Command { std: "docker" "start" "-a" "bc00da60faf5507e7495ec2d47ca2cfaa81b10107886ac5dcc638ee7e88a9335", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]    Compiling tail v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 5.31s
[INFO] running `Command { std: "docker" "inspect" "bc00da60faf5507e7495ec2d47ca2cfaa81b10107886ac5dcc638ee7e88a9335", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "bc00da60faf5507e7495ec2d47ca2cfaa81b10107886ac5dcc638ee7e88a9335", kill_on_drop: false }`
[INFO] [stdout] bc00da60faf5507e7495ec2d47ca2cfaa81b10107886ac5dcc638ee7e88a9335
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-15/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-15/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:e8397a04204aaf8b9f284182a6f9e27a3c2e67044d0943b4415b160bfc957681" "/opt/rustwide/cargo-home/bin/cargo" "+62efba8a050c64249dab942951bb28f710208bc8" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] c90e1e6d2e78554c8332de7258fa1427ab6a97fbea0df31c9ce336732378d50b
[INFO] running `Command { std: "docker" "start" "-a" "c90e1e6d2e78554c8332de7258fa1427ab6a97fbea0df31c9ce336732378d50b", kill_on_drop: false }`
[INFO] [stderr]    Compiling tail v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.32s
[INFO] running `Command { std: "docker" "inspect" "c90e1e6d2e78554c8332de7258fa1427ab6a97fbea0df31c9ce336732378d50b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "c90e1e6d2e78554c8332de7258fa1427ab6a97fbea0df31c9ce336732378d50b", kill_on_drop: false }`
[INFO] [stdout] c90e1e6d2e78554c8332de7258fa1427ab6a97fbea0df31c9ce336732378d50b
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-15/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-15/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:e8397a04204aaf8b9f284182a6f9e27a3c2e67044d0943b4415b160bfc957681" "/opt/rustwide/cargo-home/bin/cargo" "+62efba8a050c64249dab942951bb28f710208bc8" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] e90afe6b02894d8fd3f89e7ccce3d1d66a85dbe572f9fce2e67677553424ca64
[INFO] running `Command { std: "docker" "start" "-a" "e90afe6b02894d8fd3f89e7ccce3d1d66a85dbe572f9fce2e67677553424ca64", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.26s
[INFO] [stderr]      Running unittests (/opt/rustwide/target/debug/deps/tail-db7cdc7cef59599c)
[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; finished in 0.00s
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "e90afe6b02894d8fd3f89e7ccce3d1d66a85dbe572f9fce2e67677553424ca64", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "e90afe6b02894d8fd3f89e7ccce3d1d66a85dbe572f9fce2e67677553424ca64", kill_on_drop: false }`
[INFO] [stdout] e90afe6b02894d8fd3f89e7ccce3d1d66a85dbe572f9fce2e67677553424ca64