[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] 30952db9d3c41224a8578a24209be859304598f2
[INFO] checking utopiabound/rpn-rs against try#3d9fdbff4f377de96b3a51174e7a64086bee9a5c for pr-81477
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Futopiabound%2Frpn-rs" "/workspace/builds/worker-6/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-6/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/utopiabound/rpn-rs on toolchain 3d9fdbff4f377de96b3a51174e7a64086bee9a5c
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+3d9fdbff4f377de96b3a51174e7a64086bee9a5c" "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-6/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" "+3d9fdbff4f377de96b3a51174e7a64086bee9a5c" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded fltk-derive v1.0.14
[INFO] [stderr]   Downloaded az v1.1.1
[INFO] [stderr]   Downloaded fltk v1.0.14
[INFO] [stderr]   Downloaded rug v1.12.0
[INFO] [stderr]   Downloaded gmp-mpfr-sys v1.4.5
[INFO] [stderr]   Downloaded fltk-sys v1.0.14
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/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@sha256:20528e8c29e4536546f0102ce88568b16ea7538393a33fcca951030f7af10457" "/opt/rustwide/cargo-home/bin/cargo" "+3d9fdbff4f377de96b3a51174e7a64086bee9a5c" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] a1b4c21575a12a7d46a39d296b960f988e1033d8e43e07b95e9dd04f11d33f0e
[INFO] running `Command { std: "docker" "start" "-a" "a1b4c21575a12a7d46a39d296b960f988e1033d8e43e07b95e9dd04f11d33f0e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "a1b4c21575a12a7d46a39d296b960f988e1033d8e43e07b95e9dd04f11d33f0e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "a1b4c21575a12a7d46a39d296b960f988e1033d8e43e07b95e9dd04f11d33f0e", kill_on_drop: false }`
[INFO] [stdout] a1b4c21575a12a7d46a39d296b960f988e1033d8e43e07b95e9dd04f11d33f0e
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/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@sha256:20528e8c29e4536546f0102ce88568b16ea7538393a33fcca951030f7af10457" "/opt/rustwide/cargo-home/bin/cargo" "+3d9fdbff4f377de96b3a51174e7a64086bee9a5c" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 6299fd22ab8ed7c520f3874874a497d3c108aed0ff740a27081bf8147f942c4c
[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" "6299fd22ab8ed7c520f3874874a497d3c108aed0ff740a27081bf8147f942c4c", kill_on_drop: false }`
[INFO] [stderr]    Compiling cc v1.0.68
[INFO] [stderr]    Compiling gmp-mpfr-sys v1.4.5
[INFO] [stderr]    Compiling bitflags v1.2.1
[INFO] [stderr]     Checking lazy_static v1.4.0
[INFO] [stderr]    Compiling proc-macro2 v1.0.27
[INFO] [stderr]     Checking raw-window-handle v0.3.3
[INFO] [stderr]    Compiling quote v1.0.9
[INFO] [stderr]    Compiling cmake v0.1.45
[INFO] [stderr]    Compiling syn v1.0.72
[INFO] [stderr]    Compiling fltk-sys v1.0.14
[INFO] [stderr]    Compiling fltk-derive v1.0.14
[INFO] [stderr]     Checking fltk v1.0.14
[INFO] [stderr]    Compiling rug v1.12.0
[INFO] [stderr]     Checking rpn-rs v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 5m 58s
[INFO] running `Command { std: "docker" "inspect" "6299fd22ab8ed7c520f3874874a497d3c108aed0ff740a27081bf8147f942c4c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "6299fd22ab8ed7c520f3874874a497d3c108aed0ff740a27081bf8147f942c4c", kill_on_drop: false }`
[INFO] [stdout] 6299fd22ab8ed7c520f3874874a497d3c108aed0ff740a27081bf8147f942c4c