[INFO] cloning repository https://github.com/kcexn/rust_string_reversal
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/kcexn/rust_string_reversal" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fkcexn%2Frust_string_reversal", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fkcexn%2Frust_string_reversal'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 5540d3d54d024ec59ed418a1bf62b12cb8741c70
[INFO] checking kcexn/rust_string_reversal against master#db1fb85cff63ad5fffe435e17128f99f9e1d970c for pr-89056
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fkcexn%2Frust_string_reversal" "/workspace/builds/worker-95/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-95/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/kcexn/rust_string_reversal on toolchain db1fb85cff63ad5fffe435e17128f99f9e1d970c
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+db1fb85cff63ad5fffe435e17128f99f9e1d970c" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/kcexn/rust_string_reversal
[INFO] finished tweaking git repo https://github.com/kcexn/rust_string_reversal
[INFO] tweaked toml for git repo https://github.com/kcexn/rust_string_reversal written to /workspace/builds/worker-95/source/Cargo.toml
[INFO] crate git repo https://github.com/kcexn/rust_string_reversal already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+db1fb85cff63ad5fffe435e17128f99f9e1d970c" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-95/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-95/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:a89201d6b5b9fd45c15d5952ece0a0129e7e80cb26ec023fd59cf09bc26f1604" "/opt/rustwide/cargo-home/bin/cargo" "+db1fb85cff63ad5fffe435e17128f99f9e1d970c" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 36a9c23385d1831a16359b7146f42b59a1971fc32f4ebd28552e921e02116236
[INFO] running `Command { std: "docker" "start" "-a" "36a9c23385d1831a16359b7146f42b59a1971fc32f4ebd28552e921e02116236", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "36a9c23385d1831a16359b7146f42b59a1971fc32f4ebd28552e921e02116236", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "36a9c23385d1831a16359b7146f42b59a1971fc32f4ebd28552e921e02116236", kill_on_drop: false }`
[INFO] [stdout] 36a9c23385d1831a16359b7146f42b59a1971fc32f4ebd28552e921e02116236
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-95/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-95/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:a89201d6b5b9fd45c15d5952ece0a0129e7e80cb26ec023fd59cf09bc26f1604" "/opt/rustwide/cargo-home/bin/cargo" "+db1fb85cff63ad5fffe435e17128f99f9e1d970c" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 7d09db23720d5b0e9b9640730ed121ef06d36e482df7807a0b9890356d6b1579
[INFO] running `Command { std: "docker" "start" "-a" "7d09db23720d5b0e9b9640730ed121ef06d36e482df7807a0b9890356d6b1579", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Checking string_reversal v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 6.44s
[INFO] running `Command { std: "docker" "inspect" "7d09db23720d5b0e9b9640730ed121ef06d36e482df7807a0b9890356d6b1579", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "7d09db23720d5b0e9b9640730ed121ef06d36e482df7807a0b9890356d6b1579", kill_on_drop: false }`
[INFO] [stdout] 7d09db23720d5b0e9b9640730ed121ef06d36e482df7807a0b9890356d6b1579