[INFO] cloning repository https://github.com/hassaku63/rust-rpn
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/hassaku63/rust-rpn" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fhassaku63%2Frust-rpn", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fhassaku63%2Frust-rpn'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 293d68bcf06d0d20468b16691106b3a0f6f12026
[INFO] checking hassaku63/rust-rpn against try#cac44d9528e3bbbdaa1537d187bd489ccc5de18c for pr-91141
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fhassaku63%2Frust-rpn" "/workspace/builds/worker-7/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-7/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/hassaku63/rust-rpn on toolchain cac44d9528e3bbbdaa1537d187bd489ccc5de18c
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+cac44d9528e3bbbdaa1537d187bd489ccc5de18c" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/hassaku63/rust-rpn
[INFO] finished tweaking git repo https://github.com/hassaku63/rust-rpn
[INFO] tweaked toml for git repo https://github.com/hassaku63/rust-rpn written to /workspace/builds/worker-7/source/Cargo.toml
[INFO] crate git repo https://github.com/hassaku63/rust-rpn already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+cac44d9528e3bbbdaa1537d187bd489ccc5de18c" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/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@sha256:5736fa189c1c60b01babf4b8b698fe57b6ecc41933a7ff2e0b8d7a221459412b" "/opt/rustwide/cargo-home/bin/cargo" "+cac44d9528e3bbbdaa1537d187bd489ccc5de18c" "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] 3c53a9c89f5d09b75a9ec24e65687a6f07ed3341c9a5397d441f0fe9bdb5b20e
[INFO] running `Command { std: "docker" "start" "-a" "3c53a9c89f5d09b75a9ec24e65687a6f07ed3341c9a5397d441f0fe9bdb5b20e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "3c53a9c89f5d09b75a9ec24e65687a6f07ed3341c9a5397d441f0fe9bdb5b20e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "3c53a9c89f5d09b75a9ec24e65687a6f07ed3341c9a5397d441f0fe9bdb5b20e", kill_on_drop: false }`
[INFO] [stdout] 3c53a9c89f5d09b75a9ec24e65687a6f07ed3341c9a5397d441f0fe9bdb5b20e
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/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@sha256:5736fa189c1c60b01babf4b8b698fe57b6ecc41933a7ff2e0b8d7a221459412b" "/opt/rustwide/cargo-home/bin/cargo" "+cac44d9528e3bbbdaa1537d187bd489ccc5de18c" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] f282e6c27c824065814939c21de94f16676675cdc9f6f6d339689fc6bbff9e2d
[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" "f282e6c27c824065814939c21de94f16676675cdc9f6f6d339689fc6bbff9e2d", kill_on_drop: false }`
[INFO] [stderr]     Checking rust_rpn v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.26s
[INFO] running `Command { std: "docker" "inspect" "f282e6c27c824065814939c21de94f16676675cdc9f6f6d339689fc6bbff9e2d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "f282e6c27c824065814939c21de94f16676675cdc9f6f6d339689fc6bbff9e2d", kill_on_drop: false }`
[INFO] [stdout] f282e6c27c824065814939c21de94f16676675cdc9f6f6d339689fc6bbff9e2d