[INFO] cloning repository https://github.com/zimrustpro/question_mark_operator
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/zimrustpro/question_mark_operator" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fzimrustpro%2Fquestion_mark_operator", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fzimrustpro%2Fquestion_mark_operator'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 7b6ed77753f1e6f1dbb494df404a977ca886e922
[INFO] checking zimrustpro/question_mark_operator against try#c659ee110de67e82444e4b6c8407c1a9af9c2cf6 for pr-145608-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fzimrustpro%2Fquestion_mark_operator" "/workspace/builds/worker-4-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-4-tc2/source'...
[INFO] [stderr] done.
[INFO] started tweaking git repo https://github.com/zimrustpro/question_mark_operator
[INFO] finished tweaking git repo https://github.com/zimrustpro/question_mark_operator
[INFO] tweaked toml for git repo https://github.com/zimrustpro/question_mark_operator written to /workspace/builds/worker-4-tc2/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/zimrustpro/question_mark_operator on toolchain c659ee110de67e82444e4b6c8407c1a9af9c2cf6
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+c659ee110de67e82444e4b6c8407c1a9af9c2cf6" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/zimrustpro/question_mark_operator 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" "+c659ee110de67e82444e4b6c8407c1a9af9c2cf6" "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-4-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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@sha256:7ad1b28ee6f5f7f699f6cf7015098d6ccdd96d6f2d78dd06228f5b4c9faf309c" "/opt/rustwide/cargo-home/bin/cargo" "+c659ee110de67e82444e4b6c8407c1a9af9c2cf6" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 8774d638ae1dd334b4eecf5e653d01195976d34069c0e51c005d0cae95bab540
[INFO] running `Command { std: "docker" "start" "-a" "8774d638ae1dd334b4eecf5e653d01195976d34069c0e51c005d0cae95bab540", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "8774d638ae1dd334b4eecf5e653d01195976d34069c0e51c005d0cae95bab540", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "8774d638ae1dd334b4eecf5e653d01195976d34069c0e51c005d0cae95bab540", kill_on_drop: false }`
[INFO] [stdout] 8774d638ae1dd334b4eecf5e653d01195976d34069c0e51c005d0cae95bab540
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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@sha256:7ad1b28ee6f5f7f699f6cf7015098d6ccdd96d6f2d78dd06228f5b4c9faf309c" "/opt/rustwide/cargo-home/bin/cargo" "+c659ee110de67e82444e4b6c8407c1a9af9c2cf6" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] a34ff262a217b480cc3e04e9cdcff3267e5b5cf3340d720e8c13ce4ca41efd3b
[INFO] running `Command { std: "docker" "start" "-a" "a34ff262a217b480cc3e04e9cdcff3267e5b5cf3340d720e8c13ce4ca41efd3b", kill_on_drop: false }`
[INFO] [stderr]     Checking question_mark_operator v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 0.32s
[INFO] running `Command { std: "docker" "inspect" "a34ff262a217b480cc3e04e9cdcff3267e5b5cf3340d720e8c13ce4ca41efd3b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "a34ff262a217b480cc3e04e9cdcff3267e5b5cf3340d720e8c13ce4ca41efd3b", kill_on_drop: false }`
[INFO] [stdout] a34ff262a217b480cc3e04e9cdcff3267e5b5cf3340d720e8c13ce4ca41efd3b