[INFO] fetching crate syrup 0.2.0...
[INFO] checking syrup-0.2.0 against master#385fa9d845dd326c6bbfd58c22244215e431948a for absurd-question-mark-desugar
[INFO] extracting crate syrup 0.2.0 into /workspace/builds/worker-4-tc1/source
[INFO] validating manifest of crates.io crate syrup 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 syrup 0.2.0
[INFO] finished tweaking crates.io crate syrup 0.2.0
[INFO] tweaked toml for crates.io crate syrup 0.2.0 written to /workspace/builds/worker-4-tc1/source/Cargo.toml
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+385fa9d845dd326c6bbfd58c22244215e431948a" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]      Locking 14 packages
[INFO] [stderr]       Adding ncurses v5.101.0 (latest: v6.0.0)
[INFO] [stderr]       Adding pancurses v0.16.1 (latest: v0.17.0)
[INFO] [stderr]       Adding textwrap v0.10.0 (latest: v0.16.1)
[INFO] [stderr]       Adding winreg v0.5.1 (latest: v0.52.0)
[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] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded ncurses v5.101.0
[INFO] [stderr]   Downloaded pancurses v0.16.1
[INFO] [stderr]   Downloaded pdcurses-sys v0.7.1
[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] 7a245e3f333b13b309b184ffa422bd3f2562c9bc5293b87998297f3aaba37661
[INFO] running `Command { std: "docker" "start" "-a" "7a245e3f333b13b309b184ffa422bd3f2562c9bc5293b87998297f3aaba37661", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "7a245e3f333b13b309b184ffa422bd3f2562c9bc5293b87998297f3aaba37661", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "7a245e3f333b13b309b184ffa422bd3f2562c9bc5293b87998297f3aaba37661", kill_on_drop: false }`
[INFO] [stdout] 7a245e3f333b13b309b184ffa422bd3f2562c9bc5293b87998297f3aaba37661
[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] 20ea6ddc5e2a79a3bb0e24fe29acc7115dd80e9e67d0e1d0a61d6b50a3b7d481
[INFO] running `Command { std: "docker" "start" "-a" "20ea6ddc5e2a79a3bb0e24fe29acc7115dd80e9e67d0e1d0a61d6b50a3b7d481", kill_on_drop: false }`
[INFO] [stderr]    Compiling ncurses v5.101.0
[INFO] [stderr]     Checking textwrap v0.10.0
[INFO] [stderr]     Checking pancurses v0.16.1
[INFO] [stderr]     Checking syrup v0.2.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 1.55s
[INFO] running `Command { std: "docker" "inspect" "20ea6ddc5e2a79a3bb0e24fe29acc7115dd80e9e67d0e1d0a61d6b50a3b7d481", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "20ea6ddc5e2a79a3bb0e24fe29acc7115dd80e9e67d0e1d0a61d6b50a3b7d481", kill_on_drop: false }`
[INFO] [stdout] 20ea6ddc5e2a79a3bb0e24fe29acc7115dd80e9e67d0e1d0a61d6b50a3b7d481