[INFO] fetching crate dicom 0.6.3...
[INFO] checking dicom-0.6.3 against master#385fa9d845dd326c6bbfd58c22244215e431948a for absurd-question-mark-desugar
[INFO] extracting crate dicom 0.6.3 into /workspace/builds/worker-6-tc1/source
[INFO] validating manifest of crates.io crate dicom 0.6.3 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 dicom 0.6.3
[INFO] finished tweaking crates.io crate dicom 0.6.3
[INFO] tweaked toml for crates.io crate dicom 0.6.3 written to /workspace/builds/worker-6-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 108 packages
[INFO] [stderr]       Adding bitflags v1.3.2 (latest: v2.5.0)
[INFO] [stderr]       Adding c2rust-bitfields v0.3.0 (latest: v0.18.0)
[INFO] [stderr]       Adding c2rust-bitfields-derive v0.2.1 (latest: v0.18.0)
[INFO] [stderr]       Adding heck v0.4.1 (latest: v0.5.0)
[INFO] [stderr]       Adding image v0.24.9 (latest: v0.25.1)
[INFO] [stderr]       Adding object v0.32.2 (latest: v0.34.0)
[INFO] [stderr]       Adding snafu v0.7.5 (latest: v0.8.2)
[INFO] [stderr]       Adding snafu-derive v0.7.5 (latest: v0.8.2)
[INFO] [stderr]       Adding sprintf v0.1.4 (latest: v0.2.1)
[INFO] [stderr]       Adding supports-color v2.1.0 (latest: v3.0.0)
[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 dicom-ul v0.5.1
[INFO] [stderr]   Downloaded c2rust-bitfields v0.3.0
[INFO] [stderr]   Downloaded is_ci v1.2.0
[INFO] [stderr]   Downloaded sprintf v0.1.4
[INFO] [stderr]   Downloaded c2rust-bitfields-derive v0.2.1
[INFO] [stderr]   Downloaded snafu-derive v0.7.5
[INFO] [stderr]   Downloaded inventory v0.3.15
[INFO] [stderr]   Downloaded dicom-transfer-syntax-registry v0.6.2
[INFO] [stderr]   Downloaded supports-color v2.1.0
[INFO] [stderr]   Downloaded owo-colors v4.0.0
[INFO] [stderr]   Downloaded dicom-parser v0.6.0
[INFO] [stderr]   Downloaded openjp2 v0.3.0
[INFO] [stderr]   Downloaded dicom-object v0.6.3
[INFO] [stderr]   Downloaded jpeg2k v0.6.6
[INFO] [stderr]   Downloaded dicom-pixeldata v0.2.2
[INFO] [stderr]   Downloaded dicom-core v0.6.3
[INFO] [stderr]   Downloaded dicom-dictionary-std v0.6.1
[INFO] [stderr]   Downloaded dicom-encoding v0.6.1
[INFO] [stderr]   Downloaded jpeg-encoder v0.6.0
[INFO] [stderr]   Downloaded snafu v0.7.5
[INFO] [stderr]   Downloaded dicom-dump v0.6.2
[INFO] [stderr]   Downloaded byteordered v0.6.0
[INFO] [stderr]   Downloaded safe-transmute v0.11.2
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-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] c5f652f422119b3abc665c6428abdb0f3e51217ee743e7c34bdf5f63f3d3de72
[INFO] running `Command { std: "docker" "start" "-a" "c5f652f422119b3abc665c6428abdb0f3e51217ee743e7c34bdf5f63f3d3de72", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "c5f652f422119b3abc665c6428abdb0f3e51217ee743e7c34bdf5f63f3d3de72", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "c5f652f422119b3abc665c6428abdb0f3e51217ee743e7c34bdf5f63f3d3de72", kill_on_drop: false }`
[INFO] [stdout] c5f652f422119b3abc665c6428abdb0f3e51217ee743e7c34bdf5f63f3d3de72
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-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] 978bca0a89dfef35c142b525188b7e0c096faddcf8ff2ce782fa4184c520d744
[INFO] running `Command { std: "docker" "start" "-a" "978bca0a89dfef35c142b525188b7e0c096faddcf8ff2ce782fa4184c520d744", kill_on_drop: false }`
[INFO] [stderr]    Compiling syn v1.0.109
[INFO] [stderr]     Checking encoding_index_tests v0.1.4
[INFO] [stderr]    Compiling doc-comment v0.3.3
[INFO] [stderr]    Compiling heck v0.4.1
[INFO] [stderr]    Compiling syn v2.0.58
[INFO] [stderr]     Checking chrono v0.4.37
[INFO] [stderr]     Checking itertools v0.12.1
[INFO] [stderr]     Checking safe-transmute v0.11.2
[INFO] [stderr]     Checking encoding-index-singlebyte v1.20141219.5
[INFO] [stderr]     Checking encoding-index-tradchinese v1.20141219.5
[INFO] [stderr]     Checking encoding-index-korean v1.20141219.5
[INFO] [stderr]     Checking encoding-index-simpchinese v1.20141219.5
[INFO] [stderr]     Checking encoding-index-japanese v1.20141219.5
[INFO] [stderr]     Checking byteordered v0.6.0
[INFO] [stderr]     Checking tracing-core v0.1.32
[INFO] [stderr]     Checking sprintf v0.1.4
[INFO] [stderr]     Checking inventory v0.3.15
[INFO] [stderr]     Checking encoding v0.2.33
[INFO] [stderr]     Checking jpeg-decoder v0.3.1
[INFO] [stderr]     Checking jpeg-encoder v0.6.0
[INFO] [stderr]     Checking is-terminal v0.4.12
[INFO] [stderr]     Checking is_ci v1.2.0
[INFO] [stderr]     Checking supports-color v2.1.0
[INFO] [stderr]     Checking owo-colors v4.0.0
[INFO] [stderr]     Checking term_size v0.3.2
[INFO] [stderr]    Compiling snafu-derive v0.7.5
[INFO] [stderr]    Compiling c2rust-bitfields-derive v0.2.1
[INFO] [stderr]     Checking c2rust-bitfields v0.3.0
[INFO] [stderr]    Compiling tracing-attributes v0.1.27
[INFO] [stderr]    Compiling thiserror-impl v1.0.58
[INFO] [stderr]     Checking openjp2 v0.3.0
[INFO] [stderr]     Checking snafu v0.7.5
[INFO] [stderr]     Checking dicom-core v0.6.3
[INFO] [stderr]     Checking thiserror v1.0.58
[INFO] [stderr]     Checking tracing v0.1.40
[INFO] [stderr]     Checking jpeg2k v0.6.6
[INFO] [stderr]     Checking dicom-dictionary-std v0.6.1
[INFO] [stderr]     Checking dicom-encoding v0.6.1
[INFO] [stderr]     Checking dicom-transfer-syntax-registry v0.6.2
[INFO] [stderr]     Checking dicom-parser v0.6.0
[INFO] [stderr]     Checking dicom-ul v0.5.1
[INFO] [stderr]     Checking dicom-object v0.6.3
[INFO] [stderr]     Checking dicom-pixeldata v0.2.2
[INFO] [stderr]     Checking dicom-dump v0.6.2
[INFO] [stderr]     Checking dicom v0.6.3 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 24.50s
[INFO] running `Command { std: "docker" "inspect" "978bca0a89dfef35c142b525188b7e0c096faddcf8ff2ce782fa4184c520d744", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "978bca0a89dfef35c142b525188b7e0c096faddcf8ff2ce782fa4184c520d744", kill_on_drop: false }`
[INFO] [stdout] 978bca0a89dfef35c142b525188b7e0c096faddcf8ff2ce782fa4184c520d744