[INFO] fetching crate may-clack 0.5.4...
[INFO] checking may-clack-0.5.4 against master#385fa9d845dd326c6bbfd58c22244215e431948a for absurd-question-mark-desugar
[INFO] extracting crate may-clack 0.5.4 into /workspace/builds/worker-2-tc1/source
[INFO] validating manifest of crates.io crate may-clack 0.5.4 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 may-clack 0.5.4
[INFO] finished tweaking crates.io crate may-clack 0.5.4
[INFO] tweaked toml for crates.io crate may-clack 0.5.4 written to /workspace/builds/worker-2-tc1/source/Cargo.toml
[INFO] crate crates.io crate may-clack 0.5.4 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]     Updating crates.io index
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded endian-type v0.1.2
[INFO] [stderr]   Downloaded rustyline-derive v0.9.0
[INFO] [stderr]   Downloaded is-unicode-supported v0.1.0
[INFO] [stderr]   Downloaded nibble_vec v0.1.0
[INFO] [stderr]   Downloaded unicode-truncate v0.2.0
[INFO] [stderr]   Downloaded fd-lock v3.0.13
[INFO] [stderr]   Downloaded rustyline v12.0.0
[INFO] [stderr]   Downloaded rustix v0.38.9
[INFO] [stderr]   Downloaded radix_trie v0.2.1
[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] 6905eab7183012e8bd84a28acff08d64209f71780fb32b896c3e7c723f95fd7b
[INFO] running `Command { std: "docker" "start" "-a" "6905eab7183012e8bd84a28acff08d64209f71780fb32b896c3e7c723f95fd7b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "6905eab7183012e8bd84a28acff08d64209f71780fb32b896c3e7c723f95fd7b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "6905eab7183012e8bd84a28acff08d64209f71780fb32b896c3e7c723f95fd7b", kill_on_drop: false }`
[INFO] [stdout] 6905eab7183012e8bd84a28acff08d64209f71780fb32b896c3e7c723f95fd7b
[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] 807f77237f57f4527615e6e01a7c00a5917e9867e24e3c2dfcccafdb2d942970
[INFO] running `Command { std: "docker" "start" "-a" "807f77237f57f4527615e6e01a7c00a5917e9867e24e3c2dfcccafdb2d942970", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.147
[INFO] [stderr]    Compiling proc-macro2 v1.0.69
[INFO] [stderr]     Checking smallvec v1.11.0
[INFO] [stderr]     Checking bitflags v2.4.0
[INFO] [stderr]    Compiling rustix v0.38.9
[INFO] [stderr]    Compiling lock_api v0.4.10
[INFO] [stderr]     Checking log v0.4.20
[INFO] [stderr]    Compiling parking_lot_core v0.9.8
[INFO] [stderr]    Compiling signal-hook v0.3.17
[INFO] [stderr]     Checking linux-raw-sys v0.4.5
[INFO] [stderr]    Compiling memchr v2.5.0
[INFO] [stderr]     Checking nibble_vec v0.1.0
[INFO] [stderr]     Checking unicode-width v0.1.10
[INFO] [stderr]    Compiling thiserror v1.0.50
[INFO] [stderr]     Checking endian-type v0.1.2
[INFO] [stderr]     Checking unicode-segmentation v1.10.1
[INFO] [stderr]     Checking once_cell v1.18.0
[INFO] [stderr]     Checking radix_trie v0.2.1
[INFO] [stderr]     Checking home v0.5.5
[INFO] [stderr]     Checking utf8parse v0.2.1
[INFO] [stderr]     Checking is-unicode-supported v0.1.0
[INFO] [stderr]     Checking unicode-truncate v0.2.0
[INFO] [stderr]     Checking owo-colors v3.5.0
[INFO] [stderr]    Compiling quote v1.0.33
[INFO] [stderr]    Compiling syn v2.0.39
[INFO] [stderr]     Checking signal-hook-registry v1.4.1
[INFO] [stderr]     Checking mio v0.8.8
[INFO] [stderr]     Checking nix v0.26.2
[INFO] [stderr]     Checking parking_lot v0.12.1
[INFO] [stderr]     Checking signal-hook-mio v0.2.3
[INFO] [stderr]     Checking crossterm v0.27.0
[INFO] [stderr]     Checking fd-lock v3.0.13
[INFO] [stderr]    Compiling rustyline-derive v0.9.0
[INFO] [stderr]    Compiling thiserror-impl v1.0.50
[INFO] [stderr]     Checking rustyline v12.0.0
[INFO] [stderr]     Checking may-clack v0.5.4 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 16.76s
[INFO] running `Command { std: "docker" "inspect" "807f77237f57f4527615e6e01a7c00a5917e9867e24e3c2dfcccafdb2d942970", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "807f77237f57f4527615e6e01a7c00a5917e9867e24e3c2dfcccafdb2d942970", kill_on_drop: false }`
[INFO] [stdout] 807f77237f57f4527615e6e01a7c00a5917e9867e24e3c2dfcccafdb2d942970