[INFO] fetching crate pdl 0.1.1...
[INFO] checking pdl-0.1.1 against master#385fa9d845dd326c6bbfd58c22244215e431948a for absurd-question-mark-desugar
[INFO] extracting crate pdl 0.1.1 into /workspace/builds/worker-4-tc1/source
[INFO] validating manifest of crates.io crate pdl 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 pdl 0.1.1
[INFO] removed 0 missing examples
[INFO] finished tweaking crates.io crate pdl 0.1.1
[INFO] tweaked toml for crates.io crate pdl 0.1.1 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]     Updating crates.io index
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]      Locking 91 packages
[INFO] [stderr]       Adding arrayvec v0.5.2 (latest: v0.7.4)
[INFO] [stderr]       Adding bitflags v1.3.2 (latest: v2.5.0)
[INFO] [stderr]       Adding cfg-if v0.1.10 (latest: v1.0.0)
[INFO] [stderr]       Adding clap v2.34.0 (latest: v4.5.4)
[INFO] [stderr]       Adding env_logger v0.6.2 (latest: v0.11.3)
[INFO] [stderr]       Adding heck v0.3.3 (latest: v0.5.0)
[INFO] [stderr]       Adding hermit-abi v0.1.19 (latest: v0.3.9)
[INFO] [stderr]       Adding humantime v1.3.0 (latest: v2.1.0)
[INFO] [stderr]       Adding lexical-core v0.7.6 (latest: v0.8.5)
[INFO] [stderr]       Adding nom v5.1.3 (latest: v7.1.3)
[INFO] [stderr]       Adding object v0.32.2 (latest: v0.34.0)
[INFO] [stderr]       Adding open v1.7.1 (latest: v5.1.2)
[INFO] [stderr]       Adding pretty_env_logger v0.3.1 (latest: v0.5.0)
[INFO] [stderr]       Adding proc-macro2 v0.4.30 (latest: v1.0.79)
[INFO] [stderr]       Adding quick-error v1.2.3 (latest: v2.0.1)
[INFO] [stderr]       Adding quote v0.6.13 (latest: v1.0.35)
[INFO] [stderr]       Adding strsim v0.8.0 (latest: v0.11.1)
[INFO] [stderr]       Adding structopt v0.2.18 (latest: v0.3.26)
[INFO] [stderr]       Adding structopt-derive v0.2.18 (latest: v0.4.18)
[INFO] [stderr]       Adding syn v0.15.44 (latest: v2.0.58)
[INFO] [stderr]       Adding syn v1.0.109 (latest: v2.0.58)
[INFO] [stderr]       Adding synstructure v0.12.6 (latest: v0.13.1)
[INFO] [stderr]       Adding textwrap v0.11.0 (latest: v0.16.1)
[INFO] [stderr]       Adding unicode-xid v0.1.0 (latest: v0.2.4)
[INFO] [stderr]       Adding windows-core v0.52.0 (latest: v0.55.0)
[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 open v1.7.1
[INFO] [stderr]   Downloaded pretty_env_logger v0.3.1
[INFO] [stderr]   Downloaded indented v0.1.0
[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] 062c56e4673726f30b91c4e80275d453e5a1327e5ef4ec4948dee66ef8806f1f
[INFO] running `Command { std: "docker" "start" "-a" "062c56e4673726f30b91c4e80275d453e5a1327e5ef4ec4948dee66ef8806f1f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "062c56e4673726f30b91c4e80275d453e5a1327e5ef4ec4948dee66ef8806f1f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "062c56e4673726f30b91c4e80275d453e5a1327e5ef4ec4948dee66ef8806f1f", kill_on_drop: false }`
[INFO] [stdout] 062c56e4673726f30b91c4e80275d453e5a1327e5ef4ec4948dee66ef8806f1f
[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] 291db15cd630645e785d5bd959f8b4bad1aadaf029f613828807b4c90daac745
[INFO] running `Command { std: "docker" "start" "-a" "291db15cd630645e785d5bd959f8b4bad1aadaf029f613828807b4c90daac745", kill_on_drop: false }`
[INFO] [stderr]     Checking memchr v2.7.2
[INFO] [stderr]    Compiling proc-macro2 v0.4.30
[INFO] [stderr]    Compiling syn v1.0.109
[INFO] [stderr]    Compiling unicode-xid v0.1.0
[INFO] [stderr]     Checking bitflags v1.3.2
[INFO] [stderr]     Checking atty v0.2.14
[INFO] [stderr]    Compiling cc v1.0.90
[INFO] [stderr]    Compiling serde v1.0.197
[INFO] [stderr]     Checking regex-syntax v0.8.3
[INFO] [stderr]    Compiling syn v0.15.44
[INFO] [stderr]    Compiling lexical-core v0.7.6
[INFO] [stderr]    Compiling nom v5.1.3
[INFO] [stderr]    Compiling unicode-xid v0.2.4
[INFO] [stderr]    Compiling unicode-segmentation v1.11.0
[INFO] [stderr]     Checking static_assertions v1.1.0
[INFO] [stderr]     Checking gimli v0.28.1
[INFO] [stderr]     Checking aho-corasick v1.1.3
[INFO] [stderr]    Compiling failure_derive v0.1.8
[INFO] [stderr]    Compiling quote v0.6.13
[INFO] [stderr]     Checking adler v1.0.2
[INFO] [stderr]     Checking arrayvec v0.5.2
[INFO] [stderr]     Checking unicode-width v0.1.11
[INFO] [stderr]     Checking log v0.4.21
[INFO] [stderr]     Checking quick-error v1.2.3
[INFO] [stderr]     Checking humantime v1.3.0
[INFO] [stderr]     Checking textwrap v0.11.0
[INFO] [stderr]     Checking miniz_oxide v0.7.2
[INFO] [stderr]    Compiling heck v0.3.3
[INFO] [stderr]     Checking object v0.32.2
[INFO] [stderr]    Compiling backtrace v0.3.71
[INFO] [stderr]     Checking ansi_term v0.12.1
[INFO] [stderr]     Checking regex-automata v0.4.6
[INFO] [stderr]     Checking strsim v0.8.0
[INFO] [stderr]     Checking termcolor v1.4.1
[INFO] [stderr]     Checking vec_map v0.8.2
[INFO] [stderr]     Checking rustc-demangle v0.1.23
[INFO] [stderr]     Checking iana-time-zone v0.1.60
[INFO] [stderr]     Checking chrono v0.4.37
[INFO] [stderr]     Checking addr2line v0.21.0
[INFO] [stderr]    Compiling synstructure v0.12.6
[INFO] [stderr]     Checking clap v2.34.0
[INFO] [stderr]     Checking cfg-if v0.1.10
[INFO] [stderr]     Checking pathdiff v0.2.1
[INFO] [stderr]     Checking regex v1.10.4
[INFO] [stderr]     Checking indented v0.1.0
[INFO] [stderr]     Checking open v1.7.1
[INFO] [stderr]    Compiling structopt-derive v0.2.18
[INFO] [stderr]     Checking env_logger v0.6.2
[INFO] [stderr]     Checking pretty_env_logger v0.3.1
[INFO] [stderr]     Checking serde_json v1.0.115
[INFO] [stderr]     Checking failure v0.1.8
[INFO] [stderr]     Checking structopt v0.2.18
[INFO] [stderr]     Checking pdl v0.1.1 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 25.65s
[INFO] running `Command { std: "docker" "inspect" "291db15cd630645e785d5bd959f8b4bad1aadaf029f613828807b4c90daac745", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "291db15cd630645e785d5bd959f8b4bad1aadaf029f613828807b4c90daac745", kill_on_drop: false }`
[INFO] [stdout] 291db15cd630645e785d5bd959f8b4bad1aadaf029f613828807b4c90daac745