[INFO] cloning repository https://github.com/utopiabound/rpn-rs
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/utopiabound/rpn-rs" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Futopiabound%2Frpn-rs", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Futopiabound%2Frpn-rs'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 6df679ae75e2c23d90521a1ce0aa92811212c6ee
[INFO] checking utopiabound/rpn-rs against try#8de4b308b608cded0ebccf658a0fc719bce87d4e for pr-89056
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Futopiabound%2Frpn-rs" "/workspace/builds/worker-1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-1/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/utopiabound/rpn-rs on toolchain 8de4b308b608cded0ebccf658a0fc719bce87d4e
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+8de4b308b608cded0ebccf658a0fc719bce87d4e" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/utopiabound/rpn-rs
[INFO] finished tweaking git repo https://github.com/utopiabound/rpn-rs
[INFO] tweaked toml for git repo https://github.com/utopiabound/rpn-rs written to /workspace/builds/worker-1/source/Cargo.toml
[INFO] crate git repo https://github.com/utopiabound/rpn-rs already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+8de4b308b608cded0ebccf658a0fc719bce87d4e" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating git repository `https://github.com/utopiabound/libmat`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded raw-window-handle v0.3.3
[INFO] [stderr]   Downloaded cmake v0.1.45
[INFO] [stderr]   Downloaded env_logger v0.9.0
[INFO] [stderr]   Downloaded syn v1.0.75
[INFO] [stderr]   Downloaded fltk-derive v1.1.15
[INFO] [stderr]   Downloaded az v1.1.2
[INFO] [stderr]   Downloaded fltk v1.1.15
[INFO] [stderr]   Downloaded rug v1.13.0
[INFO] [stderr]   Downloaded gmp-mpfr-sys v1.4.6
[INFO] [stderr]   Downloaded fltk-sys v1.1.14
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/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:a89201d6b5b9fd45c15d5952ece0a0129e7e80cb26ec023fd59cf09bc26f1604" "/opt/rustwide/cargo-home/bin/cargo" "+8de4b308b608cded0ebccf658a0fc719bce87d4e" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 1f8f518676478512c0184d581960b03c666cd9be0c016932a2dbab3fb535171b
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "1f8f518676478512c0184d581960b03c666cd9be0c016932a2dbab3fb535171b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "1f8f518676478512c0184d581960b03c666cd9be0c016932a2dbab3fb535171b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "1f8f518676478512c0184d581960b03c666cd9be0c016932a2dbab3fb535171b", kill_on_drop: false }`
[INFO] [stdout] 1f8f518676478512c0184d581960b03c666cd9be0c016932a2dbab3fb535171b
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/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:a89201d6b5b9fd45c15d5952ece0a0129e7e80cb26ec023fd59cf09bc26f1604" "/opt/rustwide/cargo-home/bin/cargo" "+8de4b308b608cded0ebccf658a0fc719bce87d4e" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 7bc58e6b171576ce6ffdfb645fb0d68cfeba4fc5ce2e7f571024d36b39e5d3e8
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "7bc58e6b171576ce6ffdfb645fb0d68cfeba4fc5ce2e7f571024d36b39e5d3e8", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.101
[INFO] [stderr]    Compiling proc-macro2 v1.0.29
[INFO] [stderr]    Compiling unicode-xid v0.2.2
[INFO] [stderr]    Compiling gmp-mpfr-sys v1.4.6
[INFO] [stderr]    Compiling az v1.1.2
[INFO] [stderr]     Checking cfg-if v1.0.0
[INFO] [stderr]    Compiling rug v1.13.0
[INFO] [stderr]    Compiling cmake v0.1.45
[INFO] [stderr]     Checking libmat v0.2.0 (https://github.com/utopiabound/libmat?branch=no-copy#ef79c313)
[INFO] [stderr]     Checking log v0.4.14
[INFO] [stderr]    Compiling fltk-sys v1.1.14
[INFO] [stderr]    Compiling quote v1.0.9
[INFO] [stderr]     Checking atty v0.2.14
[INFO] [stderr]     Checking raw-window-handle v0.3.3
[INFO] [stderr]    Compiling syn v1.0.75
[INFO] [stderr]     Checking env_logger v0.9.0
[INFO] [stderr]    Compiling fltk-derive v1.1.15
[INFO] [stderr]     Checking fltk v1.1.15
[ERROR] error running command: no output for 300 seconds
[INFO] running `Command { std: "docker" "inspect" "7bc58e6b171576ce6ffdfb645fb0d68cfeba4fc5ce2e7f571024d36b39e5d3e8", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "7bc58e6b171576ce6ffdfb645fb0d68cfeba4fc5ce2e7f571024d36b39e5d3e8", kill_on_drop: false }`
[INFO] [stdout] 7bc58e6b171576ce6ffdfb645fb0d68cfeba4fc5ce2e7f571024d36b39e5d3e8