[INFO] fetching crate mentor 0.1.0...
[INFO] testing mentor-0.1.0 against master#62efba8a050c64249dab942951bb28f710208bc8 for pr-90799
[INFO] extracting crate mentor 0.1.0 into /workspace/builds/worker-43/source
[INFO] validating manifest of crates.io crate mentor 0.1.0 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 crates.io crate mentor 0.1.0
[INFO] finished tweaking crates.io crate mentor 0.1.0
[INFO] tweaked toml for crates.io crate mentor 0.1.0 written to /workspace/builds/worker-43/source/Cargo.toml
[INFO] crate crates.io crate mentor 0.1.0 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-43/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-43/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] 779628d1cb70b6fa936626ee8dff22ff2b97b2d0f2ce3d5c1b187d5ffaae1d32
[INFO] running `Command { std: "docker" "start" "-a" "779628d1cb70b6fa936626ee8dff22ff2b97b2d0f2ce3d5c1b187d5ffaae1d32", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "779628d1cb70b6fa936626ee8dff22ff2b97b2d0f2ce3d5c1b187d5ffaae1d32", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "779628d1cb70b6fa936626ee8dff22ff2b97b2d0f2ce3d5c1b187d5ffaae1d32", kill_on_drop: false }`
[INFO] [stdout] 779628d1cb70b6fa936626ee8dff22ff2b97b2d0f2ce3d5c1b187d5ffaae1d32
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-43/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-43/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] dedbcfaabdf4e4eb381488dde2e019050a5ad3146a246ac2c27df366b3da6741
[INFO] running `Command { std: "docker" "start" "-a" "dedbcfaabdf4e4eb381488dde2e019050a5ad3146a246ac2c27df366b3da6741", kill_on_drop: false }`
[INFO] [stderr]    Compiling mentor v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1.87s
[INFO] running `Command { std: "docker" "inspect" "dedbcfaabdf4e4eb381488dde2e019050a5ad3146a246ac2c27df366b3da6741", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "dedbcfaabdf4e4eb381488dde2e019050a5ad3146a246ac2c27df366b3da6741", kill_on_drop: false }`
[INFO] [stdout] dedbcfaabdf4e4eb381488dde2e019050a5ad3146a246ac2c27df366b3da6741
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-43/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-43/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] 313ad7872d50f46b466780cb5653f9935261d5b359fd9005a80cffcbdcdc0f50
[INFO] running `Command { std: "docker" "start" "-a" "313ad7872d50f46b466780cb5653f9935261d5b359fd9005a80cffcbdcdc0f50", kill_on_drop: false }`
[INFO] [stderr]    Compiling mentor v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.84s
[ERROR] error running command: no output for 300 seconds
[INFO] running `Command { std: "docker" "inspect" "313ad7872d50f46b466780cb5653f9935261d5b359fd9005a80cffcbdcdc0f50", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "313ad7872d50f46b466780cb5653f9935261d5b359fd9005a80cffcbdcdc0f50", kill_on_drop: false }`
[INFO] [stdout] 313ad7872d50f46b466780cb5653f9935261d5b359fd9005a80cffcbdcdc0f50