[INFO] fetching crate datapack 2.0.1...
[INFO] checking datapack-2.0.1 against master#385fa9d845dd326c6bbfd58c22244215e431948a for absurd-question-mark-desugar
[INFO] extracting crate datapack 2.0.1 into /workspace/builds/worker-3-tc1/source
[INFO] validating manifest of crates.io crate datapack 2.0.1 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 datapack 2.0.1
[INFO] finished tweaking crates.io crate datapack 2.0.1
[INFO] tweaked toml for crates.io crate datapack 2.0.1 written to /workspace/builds/worker-3-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 50 packages
[INFO] [stderr]       Adding constant_time_eq v0.1.5 (latest: v0.3.0)
[INFO] [stderr]       Adding generic-array v0.14.7 (latest: v1.0.0)
[INFO] [stderr]       Adding password-hash v0.4.2 (latest: v0.5.0)
[INFO] [stderr]       Adding pbkdf2 v0.11.0 (latest: v0.12.2)
[INFO] [stderr]       Adding zstd v0.11.2+zstd.1.5.2 (latest: v0.13.1)
[INFO] [stderr]       Adding zstd-safe v5.0.2+zstd.1.5.2 (latest: v7.1.0)
[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 named-binary-tag v0.6.0
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-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] eafd93247a4f926b66ea9489d3b63334e63fdf9a7c0bc48acd15d0c9fbc5e5d3
[INFO] running `Command { std: "docker" "start" "-a" "eafd93247a4f926b66ea9489d3b63334e63fdf9a7c0bc48acd15d0c9fbc5e5d3", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "eafd93247a4f926b66ea9489d3b63334e63fdf9a7c0bc48acd15d0c9fbc5e5d3", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "eafd93247a4f926b66ea9489d3b63334e63fdf9a7c0bc48acd15d0c9fbc5e5d3", kill_on_drop: false }`
[INFO] [stdout] eafd93247a4f926b66ea9489d3b63334e63fdf9a7c0bc48acd15d0c9fbc5e5d3
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-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] 8b3f40f4bc44f4a3724ef2366875417832362b930559119589919b0e32707365
[INFO] running `Command { std: "docker" "start" "-a" "8b3f40f4bc44f4a3724ef2366875417832362b930559119589919b0e32707365", kill_on_drop: false }`
[INFO] [stderr]    Compiling crc32fast v1.4.0
[INFO] [stderr]    Compiling zstd-safe v5.0.2+zstd.1.5.2
[INFO] [stderr]     Checking rand_core v0.6.4
[INFO] [stderr]     Checking base64ct v1.6.0
[INFO] [stderr]     Checking miniz_oxide v0.7.2
[INFO] [stderr]     Checking linked-hash-map v0.5.6
[INFO] [stderr]     Checking constant_time_eq v0.1.5
[INFO] [stderr]    Compiling jobserver v0.1.28
[INFO] [stderr]     Checking time v0.3.34
[INFO] [stderr]     Checking inout v0.1.3
[INFO] [stderr]     Checking sha2 v0.10.8
[INFO] [stderr]     Checking hmac v0.12.1
[INFO] [stderr]     Checking sha1 v0.10.6
[INFO] [stderr]     Checking cipher v0.4.4
[INFO] [stderr]    Compiling cc v1.0.90
[INFO] [stderr]     Checking aes v0.8.4
[INFO] [stderr]     Checking password-hash v0.4.2
[INFO] [stderr]     Checking pbkdf2 v0.11.0
[INFO] [stderr]     Checking flate2 v1.0.28
[INFO] [stderr]     Checking named-binary-tag v0.6.0
[INFO] [stderr]    Compiling zstd-sys v2.0.10+zstd.1.5.6
[INFO] [stderr]    Compiling bzip2-sys v0.1.11+1.0.8
[INFO] [stderr]     Checking bzip2 v0.4.4
[INFO] [stderr]     Checking zstd v0.11.2+zstd.1.5.2
[INFO] [stderr]     Checking zip v0.6.6
[INFO] [stderr]     Checking datapack v2.0.1 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 8.51s
[INFO] running `Command { std: "docker" "inspect" "8b3f40f4bc44f4a3724ef2366875417832362b930559119589919b0e32707365", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "8b3f40f4bc44f4a3724ef2366875417832362b930559119589919b0e32707365", kill_on_drop: false }`
[INFO] [stdout] 8b3f40f4bc44f4a3724ef2366875417832362b930559119589919b0e32707365