[INFO] cloning repository https://github.com/computationaltheory/penguin_jumps
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/computationaltheory/penguin_jumps" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fcomputationaltheory%2Fpenguin_jumps", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fcomputationaltheory%2Fpenguin_jumps'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 323270087ad4ddd76987565c656b36c314bc61f5
[INFO] checking computationaltheory/penguin_jumps against try#3e59a8c2f14152ccc92a6c079f592dc2dc6fa93f for pr-87248
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fcomputationaltheory%2Fpenguin_jumps" "/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/computationaltheory/penguin_jumps on toolchain 3e59a8c2f14152ccc92a6c079f592dc2dc6fa93f
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+3e59a8c2f14152ccc92a6c079f592dc2dc6fa93f" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/computationaltheory/penguin_jumps
[INFO] finished tweaking git repo https://github.com/computationaltheory/penguin_jumps
[INFO] tweaked toml for git repo https://github.com/computationaltheory/penguin_jumps written to /workspace/builds/worker-7/source/Cargo.toml
[INFO] crate git repo https://github.com/computationaltheory/penguin_jumps already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+3e59a8c2f14152ccc92a6c079f592dc2dc6fa93f" "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@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+3e59a8c2f14152ccc92a6c079f592dc2dc6fa93f" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 3e463c06a0908ea68faf008fed101c8f2d950bbb1b42644ffc8dfe13929a82a7
[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" "3e463c06a0908ea68faf008fed101c8f2d950bbb1b42644ffc8dfe13929a82a7", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "3e463c06a0908ea68faf008fed101c8f2d950bbb1b42644ffc8dfe13929a82a7", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "3e463c06a0908ea68faf008fed101c8f2d950bbb1b42644ffc8dfe13929a82a7", kill_on_drop: false }`
[INFO] [stdout] 3e463c06a0908ea68faf008fed101c8f2d950bbb1b42644ffc8dfe13929a82a7
[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@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+3e59a8c2f14152ccc92a6c079f592dc2dc6fa93f" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 43519580a2fbfa50b4f0c000dff1d7e2fe1133890597b12feb6aac08ec3619e6
[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" "43519580a2fbfa50b4f0c000dff1d7e2fe1133890597b12feb6aac08ec3619e6", kill_on_drop: false }`
[INFO] [stderr]    Compiling unicode-xid v0.1.0
[INFO] [stderr]    Compiling syn v0.15.30
[INFO] [stderr]    Compiling itoa v0.4.3
[INFO] [stderr]    Compiling stdweb-internal-runtime v0.1.3
[INFO] [stderr]    Compiling base-x v0.2.4
[INFO] [stderr]    Compiling sha1 v0.6.0
[INFO] [stderr]     Checking discard v1.0.4
[INFO] [stderr]    Compiling serde v1.0.89
[INFO] [stderr]    Compiling ryu v0.2.7
[INFO] [stderr]    Compiling stdweb v0.4.15
[INFO] [stderr]    Compiling proc-macro2 v0.4.27
[INFO] [stderr]    Compiling quote v0.6.11
[INFO] [stderr]    Compiling serde_json v1.0.39
[INFO] [stderr]    Compiling serde_derive v1.0.89
[INFO] [stderr]    Compiling stdweb-internal-macros v0.2.6
[INFO] [stderr]    Compiling stdweb-derive v0.5.1
[INFO] [stderr]     Checking penguin_jumps v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 39.86s
[INFO] running `Command { std: "docker" "inspect" "43519580a2fbfa50b4f0c000dff1d7e2fe1133890597b12feb6aac08ec3619e6", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "43519580a2fbfa50b4f0c000dff1d7e2fe1133890597b12feb6aac08ec3619e6", kill_on_drop: false }`
[INFO] [stdout] 43519580a2fbfa50b4f0c000dff1d7e2fe1133890597b12feb6aac08ec3619e6