[INFO] cloning repository https://github.com/alsotang/exercise_murmurhash_rust
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/alsotang/exercise_murmurhash_rust" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Falsotang%2Fexercise_murmurhash_rust", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Falsotang%2Fexercise_murmurhash_rust'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] cc1decb34da3be14a1c7d246dff1c5b4275ed455
[INFO] checking alsotang/exercise_murmurhash_rust against master#385fa9d845dd326c6bbfd58c22244215e431948a for never-type-fallback-to-never
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Falsotang%2Fexercise_murmurhash_rust" "/workspace/builds/worker-2-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-2-tc1/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/alsotang/exercise_murmurhash_rust on toolchain 385fa9d845dd326c6bbfd58c22244215e431948a
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+385fa9d845dd326c6bbfd58c22244215e431948a" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/alsotang/exercise_murmurhash_rust
[INFO] finished tweaking git repo https://github.com/alsotang/exercise_murmurhash_rust
[INFO] tweaked toml for git repo https://github.com/alsotang/exercise_murmurhash_rust written to /workspace/builds/worker-2-tc1/source/Cargo.toml
[INFO] crate git repo https://github.com/alsotang/exercise_murmurhash_rust already has a lockfile, it will not be regenerated
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+385fa9d845dd326c6bbfd58c22244215e431948a" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc1/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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+385fa9d845dd326c6bbfd58c22244215e431948a" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] e097b606a54c6cd3f3c3e3e4a2afab46665bfdd0fd1acca9a4c8ce9b273e4d33
[INFO] running `Command { std: "docker" "start" "-a" "e097b606a54c6cd3f3c3e3e4a2afab46665bfdd0fd1acca9a4c8ce9b273e4d33", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "e097b606a54c6cd3f3c3e3e4a2afab46665bfdd0fd1acca9a4c8ce9b273e4d33", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "e097b606a54c6cd3f3c3e3e4a2afab46665bfdd0fd1acca9a4c8ce9b273e4d33", kill_on_drop: false }`
[INFO] [stdout] e097b606a54c6cd3f3c3e3e4a2afab46665bfdd0fd1acca9a4c8ce9b273e4d33
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc1/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" "RUSTDOCFLAGS=--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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+385fa9d845dd326c6bbfd58c22244215e431948a" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] d0d7601e4e75b012cf88fb9c6fde65dd139ff975bd3e09bbd44815bd77346859
[INFO] running `Command { std: "docker" "start" "-a" "d0d7601e4e75b012cf88fb9c6fde65dd139ff975bd3e09bbd44815bd77346859", kill_on_drop: false }`
[INFO] [stderr]     Checking bytes v0.5.6
[INFO] [stderr]     Checking murmurhash v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 0.42s
[INFO] running `Command { std: "docker" "inspect" "d0d7601e4e75b012cf88fb9c6fde65dd139ff975bd3e09bbd44815bd77346859", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "d0d7601e4e75b012cf88fb9c6fde65dd139ff975bd3e09bbd44815bd77346859", kill_on_drop: false }`
[INFO] [stdout] d0d7601e4e75b012cf88fb9c6fde65dd139ff975bd3e09bbd44815bd77346859
[INFO] checking alsotang/exercise_murmurhash_rust against try#2d84f2737f3bd9ebfcb07f75aa198d6cf7c715d2 for never-type-fallback-to-never
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Falsotang%2Fexercise_murmurhash_rust" "/workspace/builds/worker-2-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-2-tc2/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/alsotang/exercise_murmurhash_rust on toolchain 2d84f2737f3bd9ebfcb07f75aa198d6cf7c715d2
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+2d84f2737f3bd9ebfcb07f75aa198d6cf7c715d2" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/alsotang/exercise_murmurhash_rust
[INFO] finished tweaking git repo https://github.com/alsotang/exercise_murmurhash_rust
[INFO] tweaked toml for git repo https://github.com/alsotang/exercise_murmurhash_rust written to /workspace/builds/worker-2-tc2/source/Cargo.toml
[INFO] crate git repo https://github.com/alsotang/exercise_murmurhash_rust already has a lockfile, it will not be regenerated
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+2d84f2737f3bd9ebfcb07f75aa198d6cf7c715d2" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc2/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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+2d84f2737f3bd9ebfcb07f75aa198d6cf7c715d2" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 8334e23868e54fc20d4f8148a5f926f91f91230e742fa931e89b1b5fd8fcac35
[INFO] running `Command { std: "docker" "start" "-a" "8334e23868e54fc20d4f8148a5f926f91f91230e742fa931e89b1b5fd8fcac35", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "8334e23868e54fc20d4f8148a5f926f91f91230e742fa931e89b1b5fd8fcac35", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "8334e23868e54fc20d4f8148a5f926f91f91230e742fa931e89b1b5fd8fcac35", kill_on_drop: false }`
[INFO] [stdout] 8334e23868e54fc20d4f8148a5f926f91f91230e742fa931e89b1b5fd8fcac35
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc2/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" "RUSTDOCFLAGS=--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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+2d84f2737f3bd9ebfcb07f75aa198d6cf7c715d2" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 5eb411b18efe7d97171af51653dda2b7f906c9efcca0c3ab6c58b47cfe797fb4
[INFO] running `Command { std: "docker" "start" "-a" "5eb411b18efe7d97171af51653dda2b7f906c9efcca0c3ab6c58b47cfe797fb4", kill_on_drop: false }`
[INFO] [stderr]     Checking bytes v0.5.6
[INFO] [stderr]     Checking murmurhash v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 0.50s
[INFO] running `Command { std: "docker" "inspect" "5eb411b18efe7d97171af51653dda2b7f906c9efcca0c3ab6c58b47cfe797fb4", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "5eb411b18efe7d97171af51653dda2b7f906c9efcca0c3ab6c58b47cfe797fb4", kill_on_drop: false }`
[INFO] [stdout] 5eb411b18efe7d97171af51653dda2b7f906c9efcca0c3ab6c58b47cfe797fb4