[INFO] fetching crate looking-glass-derive 0.1.1...
[INFO] checking looking-glass-derive-0.1.1 against master#385fa9d845dd326c6bbfd58c22244215e431948a for absurd-question-mark-desugar
[INFO] extracting crate looking-glass-derive 0.1.1 into /workspace/builds/worker-0-tc1/source
[INFO] validating manifest of crates.io crate looking-glass-derive 0.1.1 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 looking-glass-derive 0.1.1
[INFO] finished tweaking crates.io crate looking-glass-derive 0.1.1
[INFO] tweaked toml for crates.io crate looking-glass-derive 0.1.1 written to /workspace/builds/worker-0-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]     Updating crates.io index
[INFO] [stderr]      Locking 39 packages
[INFO] [stderr]       Adding darling v0.12.4 (latest: v0.20.8)
[INFO] [stderr]       Adding darling_core v0.12.4 (latest: v0.20.8)
[INFO] [stderr]       Adding darling_macro v0.12.4 (latest: v0.20.8)
[INFO] [stderr]       Adding smol_str v0.1.24 (latest: v0.2.1)
[INFO] [stderr]       Adding strsim v0.10.0 (latest: v0.11.1)
[INFO] [stderr]       Adding syn v1.0.109 (latest: v2.0.58)
[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 smol_str v0.1.24
[INFO] [stderr]   Downloaded trybuild v1.0.91
[INFO] [stderr]   Downloaded darling_macro v0.12.4
[INFO] [stderr]   Downloaded darling v0.12.4
[INFO] [stderr]   Downloaded looking-glass v0.1.1
[INFO] [stderr]   Downloaded toml v0.8.12
[INFO] [stderr]   Downloaded darling_core v0.12.4
[INFO] [stderr]   Downloaded winnow v0.6.5
[INFO] [stderr]   Downloaded toml_edit v0.22.9
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-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] 631a0e5c1009b560940a5d774ad40b6a6f816d92508cd2d3ebcdd682477cbadc
[INFO] running `Command { std: "docker" "start" "-a" "631a0e5c1009b560940a5d774ad40b6a6f816d92508cd2d3ebcdd682477cbadc", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "631a0e5c1009b560940a5d774ad40b6a6f816d92508cd2d3ebcdd682477cbadc", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "631a0e5c1009b560940a5d774ad40b6a6f816d92508cd2d3ebcdd682477cbadc", kill_on_drop: false }`
[INFO] [stdout] 631a0e5c1009b560940a5d774ad40b6a6f816d92508cd2d3ebcdd682477cbadc
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-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] 48ae6157f50c8bac30fe8c172f1b63d3ea3a636a0c28e50d71467c269ec46721
[INFO] running `Command { std: "docker" "start" "-a" "48ae6157f50c8bac30fe8c172f1b63d3ea3a636a0c28e50d71467c269ec46721", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.79
[INFO] [stderr]     Checking unicode-ident v1.0.12
[INFO] [stderr]    Compiling syn v1.0.109
[INFO] [stderr]     Checking winnow v0.6.5
[INFO] [stderr]     Checking toml_datetime v0.6.5
[INFO] [stderr]     Checking serde_spanned v0.6.5
[INFO] [stderr]     Checking ident_case v1.0.1
[INFO] [stderr]    Compiling trybuild v1.0.91
[INFO] [stderr]     Checking serde_json v1.0.115
[INFO] [stderr]     Checking smol_str v0.1.24
[INFO] [stderr]     Checking glob v0.3.1
[INFO] [stderr]     Checking quote v1.0.35
[INFO] [stderr]    Compiling syn v2.0.58
[INFO] [stderr]     Checking toml_edit v0.22.9
[INFO] [stderr]    Compiling thiserror-impl v1.0.58
[INFO] [stderr]    Compiling serde_derive v1.0.197
[INFO] [stderr]    Compiling darling_core v0.12.4
[INFO] [stderr]     Checking toml v0.8.12
[INFO] [stderr]     Checking thiserror v1.0.58
[INFO] [stderr]     Checking looking-glass v0.1.1
[INFO] [stderr]    Compiling darling_macro v0.12.4
[INFO] [stderr]     Checking darling v0.12.4
[INFO] [stderr]     Checking looking-glass-derive v0.1.1 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 28.81s
[INFO] running `Command { std: "docker" "inspect" "48ae6157f50c8bac30fe8c172f1b63d3ea3a636a0c28e50d71467c269ec46721", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "48ae6157f50c8bac30fe8c172f1b63d3ea3a636a0c28e50d71467c269ec46721", kill_on_drop: false }`
[INFO] [stdout] 48ae6157f50c8bac30fe8c172f1b63d3ea3a636a0c28e50d71467c269ec46721