[INFO] fetching crate esopt 0.2.0...
[INFO] checking esopt-0.2.0 against master#385fa9d845dd326c6bbfd58c22244215e431948a for absurd-question-mark-desugar
[INFO] extracting crate esopt 0.2.0 into /workspace/builds/worker-4-tc1/source
[INFO] validating manifest of crates.io crate esopt 0.2.0 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 crates.io crate esopt 0.2.0
[INFO] finished tweaking crates.io crate esopt 0.2.0
[INFO] tweaked toml for crates.io crate esopt 0.2.0 written to /workspace/builds/worker-4-tc1/source/Cargo.toml
[INFO] crate crates.io crate esopt 0.2.0 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]  Downloading crates ...
[INFO] [stderr]   Downloaded crossbeam-utils v0.8.10
[INFO] [stderr]   Downloaded either v1.5.1
[INFO] [stderr]   Downloaded num_cpus v1.10.0
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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] 1ec866e7c92afde5823529f3686ecfc8a671a7bbe6abe4a47c3b0a8b84ea62ab
[INFO] running `Command { std: "docker" "start" "-a" "1ec866e7c92afde5823529f3686ecfc8a671a7bbe6abe4a47c3b0a8b84ea62ab", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "1ec866e7c92afde5823529f3686ecfc8a671a7bbe6abe4a47c3b0a8b84ea62ab", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "1ec866e7c92afde5823529f3686ecfc8a671a7bbe6abe4a47c3b0a8b84ea62ab", kill_on_drop: false }`
[INFO] [stdout] 1ec866e7c92afde5823529f3686ecfc8a671a7bbe6abe4a47c3b0a8b84ea62ab
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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] c8035613f2741e5ff61959716b120ddcb24247d85c17cfc9c3fae916d88f5dca
[INFO] running `Command { std: "docker" "start" "-a" "c8035613f2741e5ff61959716b120ddcb24247d85c17cfc9c3fae916d88f5dca", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.40
[INFO] [stderr]    Compiling crossbeam-utils v0.8.10
[INFO] [stderr]    Compiling memoffset v0.6.5
[INFO] [stderr]    Compiling quote v1.0.20
[INFO] [stderr]     Checking once_cell v1.12.0
[INFO] [stderr]    Compiling crossbeam-epoch v0.9.9
[INFO] [stderr]    Compiling syn v1.0.98
[INFO] [stderr]    Compiling libm v0.2.2
[INFO] [stderr]    Compiling rayon-core v1.9.3
[INFO] [stderr]    Compiling num-traits v0.2.15
[INFO] [stderr]    Compiling rayon v1.5.3
[INFO] [stderr]     Checking itoa v1.0.2
[INFO] [stderr]     Checking ryu v1.0.10
[INFO] [stderr]     Checking either v1.5.1
[INFO] [stderr]     Checking num_cpus v1.10.0
[INFO] [stderr]     Checking rand v0.8.5
[INFO] [stderr]     Checking crossbeam-channel v0.5.5
[INFO] [stderr]     Checking crossbeam-deque v0.8.1
[INFO] [stderr]     Checking rand_distr v0.4.3
[INFO] [stderr]    Compiling serde_derive v1.0.137
[INFO] [stderr]     Checking serde v1.0.137
[INFO] [stderr]     Checking serde_json v1.0.81
[INFO] [stderr]     Checking esopt v0.2.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 13.97s
[INFO] running `Command { std: "docker" "inspect" "c8035613f2741e5ff61959716b120ddcb24247d85c17cfc9c3fae916d88f5dca", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "c8035613f2741e5ff61959716b120ddcb24247d85c17cfc9c3fae916d88f5dca", kill_on_drop: false }`
[INFO] [stdout] c8035613f2741e5ff61959716b120ddcb24247d85c17cfc9c3fae916d88f5dca