[INFO] fetching crate mexprp 0.3.1...
[INFO] checking mexprp-0.3.1 against master#9f48dedc9763334a587c66558974635807a113ed for pr-137394
[INFO] extracting crate mexprp 0.3.1 into /workspace/builds/worker-4-tc1/source
[INFO] validating manifest of crates.io crate mexprp 0.3.1 on toolchain 9f48dedc9763334a587c66558974635807a113ed
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+9f48dedc9763334a587c66558974635807a113ed" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate mexprp 0.3.1
[INFO] finished tweaking crates.io crate mexprp 0.3.1
[INFO] tweaked toml for crates.io crate mexprp 0.3.1 written to /workspace/builds/worker-4-tc1/source/Cargo.toml
[INFO] crate crates.io crate mexprp 0.3.1 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" "+9f48dedc9763334a587c66558974635807a113ed" "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] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded rug v1.13.0
[INFO] [stderr]   Downloaded gmp-mpfr-sys v1.4.6
[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@sha256:3959728d45483eb673ba100a951a6b9f5012970368db2a9e08e0ac9b67c8a5ad" "/opt/rustwide/cargo-home/bin/cargo" "+9f48dedc9763334a587c66558974635807a113ed" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 7ea251ddc4b5f3fec55428a922cbbc0ac610d1eab60811f21dd6f15bdbf63b0d
[INFO] running `Command { std: "docker" "start" "-a" "7ea251ddc4b5f3fec55428a922cbbc0ac610d1eab60811f21dd6f15bdbf63b0d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "7ea251ddc4b5f3fec55428a922cbbc0ac610d1eab60811f21dd6f15bdbf63b0d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "7ea251ddc4b5f3fec55428a922cbbc0ac610d1eab60811f21dd6f15bdbf63b0d", kill_on_drop: false }`
[INFO] [stdout] 7ea251ddc4b5f3fec55428a922cbbc0ac610d1eab60811f21dd6f15bdbf63b0d
[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=forbid" "-e" "RUSTDOCFLAGS=--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@sha256:3959728d45483eb673ba100a951a6b9f5012970368db2a9e08e0ac9b67c8a5ad" "/opt/rustwide/cargo-home/bin/cargo" "+9f48dedc9763334a587c66558974635807a113ed" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 0ff6d04fdf10df0ec1b76b6f8830279ed165108a47838c0583590ad1ad5ce1ac
[INFO] running `Command { std: "docker" "start" "-a" "0ff6d04fdf10df0ec1b76b6f8830279ed165108a47838c0583590ad1ad5ce1ac", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.28
[INFO] [stderr]    Compiling unicode-xid v0.2.2
[INFO] [stderr]    Compiling syn v1.0.74
[INFO] [stderr]    Compiling gmp-mpfr-sys v1.4.6
[INFO] [stderr]    Compiling libc v0.2.98
[INFO] [stderr]    Compiling az v1.1.1
[INFO] [stderr]    Compiling rug v1.13.0
[INFO] [stderr]    Compiling quote v1.0.9
[INFO] [stderr]    Compiling thiserror-impl v1.0.26
[INFO] [stderr]     Checking thiserror v1.0.26
[ERROR] error running command: no output for 300 seconds
[INFO] running `Command { std: "docker" "inspect" "0ff6d04fdf10df0ec1b76b6f8830279ed165108a47838c0583590ad1ad5ce1ac", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "0ff6d04fdf10df0ec1b76b6f8830279ed165108a47838c0583590ad1ad5ce1ac", kill_on_drop: false }`
[INFO] [stdout] 0ff6d04fdf10df0ec1b76b6f8830279ed165108a47838c0583590ad1ad5ce1ac