[INFO] cloning repository https://github.com/ymgyt/mathground
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/ymgyt/mathground" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fymgyt%2Fmathground", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fymgyt%2Fmathground'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] d85cc5cf4b15a4b365b2d0a7e2bc51a5d1b3d8ad
[INFO] building ymgyt/mathground against master#461e8078010433ff7de2db2aaae8a3cfb0847215 for pr-94962
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fymgyt%2Fmathground" "/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/ymgyt/mathground on toolchain 461e8078010433ff7de2db2aaae8a3cfb0847215
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+461e8078010433ff7de2db2aaae8a3cfb0847215" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/ymgyt/mathground
[INFO] finished tweaking git repo https://github.com/ymgyt/mathground
[INFO] tweaked toml for git repo https://github.com/ymgyt/mathground written to /workspace/builds/worker-15/source/Cargo.toml
[INFO] crate git repo https://github.com/ymgyt/mathground already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+461e8078010433ff7de2db2aaae8a3cfb0847215" "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 quote v1.0.3
[INFO] [stderr]   Downloaded assert_approx_eq v1.1.0
[INFO] [stderr]   Downloaded anyhow v1.0.28
[INFO] [stderr]   Downloaded either v1.6.0
[INFO] [stderr]   Downloaded statrs v0.12.0
[INFO] [stderr]   Downloaded syn v1.0.17
[INFO] [stderr]   Downloaded backtrace-sys v0.1.36
[INFO] [stderr]   Downloaded proc-macro2 v1.0.10
[INFO] [stderr]   Downloaded svg v0.7.2
[INFO] [stderr]   Downloaded plotlib v0.5.1
[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:eaef2f80f755933c374d2ae5edccceec0c1312ceb8a4e0b6404e8ab76561e1e5" "/opt/rustwide/cargo-home/bin/cargo" "+461e8078010433ff7de2db2aaae8a3cfb0847215" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 980f975c42af10cf625730939dad0ac0c5322bb93b9fa1d2971956eb3b4aa6cb
[INFO] running `Command { std: "docker" "start" "-a" "980f975c42af10cf625730939dad0ac0c5322bb93b9fa1d2971956eb3b4aa6cb", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "980f975c42af10cf625730939dad0ac0c5322bb93b9fa1d2971956eb3b4aa6cb", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "980f975c42af10cf625730939dad0ac0c5322bb93b9fa1d2971956eb3b4aa6cb", kill_on_drop: false }`
[INFO] [stdout] 980f975c42af10cf625730939dad0ac0c5322bb93b9fa1d2971956eb3b4aa6cb
[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:eaef2f80f755933c374d2ae5edccceec0c1312ceb8a4e0b6404e8ab76561e1e5" "/opt/rustwide/cargo-home/bin/cargo" "+461e8078010433ff7de2db2aaae8a3cfb0847215" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 25856701f575a4437a84e646677e4a948100a43e43c95a5200e6cae3c15d39dc
[INFO] running `Command { std: "docker" "start" "-a" "25856701f575a4437a84e646677e4a948100a43e43c95a5200e6cae3c15d39dc", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.69
[INFO] [stderr]    Compiling proc-macro2 v1.0.10
[INFO] [stderr]    Compiling cfg-if v0.1.10
[INFO] [stderr]    Compiling unicode-xid v0.2.0
[INFO] [stderr]    Compiling syn v1.0.17
[INFO] [stderr]    Compiling cc v1.0.50
[INFO] [stderr]    Compiling getrandom v0.1.14
[INFO] [stderr]    Compiling failure_derive v0.1.7
[INFO] [stderr]    Compiling autocfg v1.0.0
[INFO] [stderr]    Compiling ppv-lite86 v0.2.6
[INFO] [stderr]    Compiling rustc-demangle v0.1.16
[INFO] [stderr]    Compiling anyhow v1.0.28
[INFO] [stderr]    Compiling either v1.6.0
[INFO] [stderr]    Compiling svg v0.7.2
[INFO] [stderr]    Compiling itertools v0.9.0
[INFO] [stderr]    Compiling num-traits v0.2.11
[INFO] [stderr]    Compiling backtrace-sys v0.1.36
[INFO] [stderr]    Compiling quote v1.0.3
[INFO] [stderr]    Compiling rand_core v0.5.1
[INFO] [stderr]    Compiling backtrace v0.3.46
[INFO] [stderr]    Compiling rand_chacha v0.2.2
[INFO] [stderr]    Compiling rand v0.7.3
[INFO] [stderr]    Compiling statrs v0.12.0
[INFO] [stderr]    Compiling synstructure v0.12.3
[INFO] [stderr]    Compiling failure v0.1.7
[INFO] [stderr]    Compiling plotlib v0.5.1
[INFO] [stderr]    Compiling mathground v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 38.38s
[INFO] running `Command { std: "docker" "inspect" "25856701f575a4437a84e646677e4a948100a43e43c95a5200e6cae3c15d39dc", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "25856701f575a4437a84e646677e4a948100a43e43c95a5200e6cae3c15d39dc", kill_on_drop: false }`
[INFO] [stdout] 25856701f575a4437a84e646677e4a948100a43e43c95a5200e6cae3c15d39dc
[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:eaef2f80f755933c374d2ae5edccceec0c1312ceb8a4e0b6404e8ab76561e1e5" "/opt/rustwide/cargo-home/bin/cargo" "+461e8078010433ff7de2db2aaae8a3cfb0847215" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 08af73b6feb993b6e55073d06d656d1dda13bb7a8742e027af4db6a2eb5800eb
[INFO] running `Command { std: "docker" "start" "-a" "08af73b6feb993b6e55073d06d656d1dda13bb7a8742e027af4db6a2eb5800eb", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[ERROR] error running command: no output for 300 seconds
[INFO] running `Command { std: "docker" "inspect" "08af73b6feb993b6e55073d06d656d1dda13bb7a8742e027af4db6a2eb5800eb", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "08af73b6feb993b6e55073d06d656d1dda13bb7a8742e027af4db6a2eb5800eb", kill_on_drop: false }`
[INFO] [stdout] 08af73b6feb993b6e55073d06d656d1dda13bb7a8742e027af4db6a2eb5800eb