[INFO] cloning repository https://github.com/SawyerHood/letter-boxed-rust
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/SawyerHood/letter-boxed-rust" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FSawyerHood%2Fletter-boxed-rust", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FSawyerHood%2Fletter-boxed-rust'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 419b66571e7f801af72084f1d6d37ecbd31e56b3
[INFO] checking SawyerHood/letter-boxed-rust against try#075992eda207e1647b699c8c8ada67b32ce7b115 for pr-77271
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FSawyerHood%2Fletter-boxed-rust" "/workspace/builds/worker-13/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-13/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/SawyerHood/letter-boxed-rust on toolchain 075992eda207e1647b699c8c8ada67b32ce7b115
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+075992eda207e1647b699c8c8ada67b32ce7b115" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/SawyerHood/letter-boxed-rust
[INFO] finished tweaking git repo https://github.com/SawyerHood/letter-boxed-rust
[INFO] tweaked toml for git repo https://github.com/SawyerHood/letter-boxed-rust written to /workspace/builds/worker-13/source/Cargo.toml
[INFO] crate git repo https://github.com/SawyerHood/letter-boxed-rust already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+075992eda207e1647b699c8c8ada67b32ce7b115" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-13/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-13/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" "rustops/crates-build-env@sha256:d92eaeed33fa75130ca1ee6c8a01d1ffb62bac859dfdfb3450e3e5d1c0146529" "/opt/rustwide/cargo-home/bin/cargo" "+075992eda207e1647b699c8c8ada67b32ce7b115" "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] 619b9036382a54dbb15a9ae3c15ab56ff56c05203bca4d25f45c0f5732466bbc
[INFO] running `Command { std: "docker" "start" "-a" "619b9036382a54dbb15a9ae3c15ab56ff56c05203bca4d25f45c0f5732466bbc", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "619b9036382a54dbb15a9ae3c15ab56ff56c05203bca4d25f45c0f5732466bbc", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "619b9036382a54dbb15a9ae3c15ab56ff56c05203bca4d25f45c0f5732466bbc", kill_on_drop: false }`
[INFO] [stdout] 619b9036382a54dbb15a9ae3c15ab56ff56c05203bca4d25f45c0f5732466bbc
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-13/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-13/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" "rustops/crates-build-env@sha256:d92eaeed33fa75130ca1ee6c8a01d1ffb62bac859dfdfb3450e3e5d1c0146529" "/opt/rustwide/cargo-home/bin/cargo" "+075992eda207e1647b699c8c8ada67b32ce7b115" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] af90dcb037a04857acf01d2775299d540d1ca8f3abeac2dd2e3d8625eab7800f
[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" "af90dcb037a04857acf01d2775299d540d1ca8f3abeac2dd2e3d8625eab7800f", kill_on_drop: false }`
[INFO] [stderr]     Checking either v1.5.1
[INFO] [stderr]     Checking crossbeam-utils v0.2.2
[INFO] [stderr]     Checking num_cpus v1.10.0
[INFO] [stderr]     Checking crossbeam-epoch v0.3.1
[INFO] [stderr]     Checking crossbeam-deque v0.2.0
[INFO] [stderr]     Checking rayon-core v1.4.1
[INFO] [stderr]     Checking rayon v1.0.3
[INFO] [stderr]     Checking letter v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 6.28s
[INFO] running `Command { std: "docker" "inspect" "af90dcb037a04857acf01d2775299d540d1ca8f3abeac2dd2e3d8625eab7800f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "af90dcb037a04857acf01d2775299d540d1ca8f3abeac2dd2e3d8625eab7800f", kill_on_drop: false }`
[INFO] [stdout] af90dcb037a04857acf01d2775299d540d1ca8f3abeac2dd2e3d8625eab7800f