[INFO] fetching crate malloc-best-effort 0.1.4...
[INFO] testing malloc-best-effort-0.1.4 against 1.91.0 for beta-1.92-2
[INFO] extracting crate malloc-best-effort 0.1.4 into /workspace/builds/worker-4-tc1/source
[INFO] started tweaking crates.io crate malloc-best-effort 0.1.4
[INFO] finished tweaking crates.io crate malloc-best-effort 0.1.4
[INFO] tweaked toml for crates.io crate malloc-best-effort 0.1.4 written to /workspace/builds/worker-4-tc1/source/Cargo.toml
[INFO] validating manifest of crates.io crate malloc-best-effort 0.1.4 on toolchain 1.91.0
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1.91.0" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate crates.io crate malloc-best-effort 0.1.4 already has a lockfile, it will not be regenerated
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1.91.0" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded libc v0.2.173
[INFO] [stderr]   Downloaded mimalloc v0.1.46
[INFO] [stderr]   Downloaded tcmalloc-better v0.1.14
[INFO] [stderr]   Downloaded libtcmalloc-sys v0.1.9
[INFO] [stderr]   Downloaded libmimalloc-sys v0.1.42
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/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@sha256:4848fb76d95f26979359cc7e45710b1dbc8f3acb7aeedee7c460d7702230f228" "/opt/rustwide/cargo-home/bin/cargo" "+1.91.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 07bda65557892edc21bcbc2d7e07ccd696ef2f653bb8df617ecade478ea65a55
[INFO] running `Command { std: "docker" "start" "-a" "07bda65557892edc21bcbc2d7e07ccd696ef2f653bb8df617ecade478ea65a55", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "07bda65557892edc21bcbc2d7e07ccd696ef2f653bb8df617ecade478ea65a55", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "07bda65557892edc21bcbc2d7e07ccd696ef2f653bb8df617ecade478ea65a55", kill_on_drop: false }`
[INFO] [stdout] 07bda65557892edc21bcbc2d7e07ccd696ef2f653bb8df617ecade478ea65a55
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/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=warn" "-e" "RUSTDOCFLAGS=--cap-lints=warn" "-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@sha256:4848fb76d95f26979359cc7e45710b1dbc8f3acb7aeedee7c460d7702230f228" "/opt/rustwide/cargo-home/bin/cargo" "+1.91.0" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 3a0733e9e7288d7458ff0eef49830fdd1186b78ff8b1b3f6f4ed3154f93e1b98
[INFO] running `Command { std: "docker" "start" "-a" "3a0733e9e7288d7458ff0eef49830fdd1186b78ff8b1b3f6f4ed3154f93e1b98", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.173
[INFO] [stderr]    Compiling malloc-best-effort v0.1.4 (/opt/rustwide/workdir)
[INFO] [stderr]    Compiling document-features v0.2.11
[INFO] [stderr]    Compiling jobserver v0.1.33
[INFO] [stderr]    Compiling cc v1.2.27
[INFO] [stderr]    Compiling libtcmalloc-sys v0.1.9
[ERROR] error running command: no output for 300 seconds
[INFO] running `Command { std: "docker" "inspect" "3a0733e9e7288d7458ff0eef49830fdd1186b78ff8b1b3f6f4ed3154f93e1b98", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "3a0733e9e7288d7458ff0eef49830fdd1186b78ff8b1b3f6f4ed3154f93e1b98", kill_on_drop: false }`
[INFO] [stdout] 3a0733e9e7288d7458ff0eef49830fdd1186b78ff8b1b3f6f4ed3154f93e1b98