[INFO] fetching crate barc 2.2.2...
[INFO] checking barc-2.2.2 against master#385fa9d845dd326c6bbfd58c22244215e431948a for absurd-question-mark-desugar
[INFO] extracting crate barc 2.2.2 into /workspace/builds/worker-1-tc1/source
[INFO] validating manifest of crates.io crate barc 2.2.2 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 barc 2.2.2
[INFO] finished tweaking crates.io crate barc 2.2.2
[INFO] tweaked toml for crates.io crate barc 2.2.2 written to /workspace/builds/worker-1-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]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]      Locking 37 packages
[INFO] [stderr]       Adding bitflags v1.3.2 (latest: v2.5.0)
[INFO] [stderr]       Adding brotli v3.3.4 (latest: v4.0.0)
[INFO] [stderr]       Adding brotli-decompressor v2.3.5 (latest: v3.0.0)
[INFO] [stderr]       Adding bytes v1.1.0 (latest: v1.6.0)
[INFO] [stderr]       Adding http v0.2.12 (latest: v1.1.0)
[INFO] [stderr]       Adding httparse v1.4.1 (latest: v1.8.0)
[INFO] [stderr]       Adding log v0.4.14 (latest: v0.4.21)
[INFO] [stderr]       Adding redox_syscall v0.2.16 (latest: v0.5.1)
[INFO] [stderr]       Adding remove_dir_all v0.5.2 (latest: v0.8.2)
[INFO] [stderr]       Adding tempfile v3.2.0 (latest: v3.10.1)
[INFO] [stderr]       Adding wasi v0.11.0+wasi-snapshot-preview1 (latest: v0.13.0+wasi-0.2.0)
[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 alloc-no-stdlib v2.0.4
[INFO] [stderr]   Downloaded piccolog v1.0.3
[INFO] [stderr]   Downloaded olio v1.4.0
[INFO] [stderr]   Downloaded tao-log v1.0.1
[INFO] [stderr]   Downloaded remove_dir_all v0.5.2
[INFO] [stderr]   Downloaded brotli-decompressor v2.3.5
[INFO] [stderr]   Downloaded brotli-decompressor v3.0.0
[INFO] [stderr]   Downloaded tempfile v3.2.0
[INFO] [stderr]   Downloaded body-image v2.2.3
[INFO] [stderr]   Downloaded alloc-stdlib v0.2.2
[INFO] [stderr]   Downloaded bytes v1.1.0
[INFO] [stderr]   Downloaded httparse v1.4.1
[INFO] [stderr]   Downloaded brotli v3.3.4
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-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] 8f01385503efca513e9ebeb6260945e49e29403bfd278cdbf2e6d2e65c8ad313
[INFO] running `Command { std: "docker" "start" "-a" "8f01385503efca513e9ebeb6260945e49e29403bfd278cdbf2e6d2e65c8ad313", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "8f01385503efca513e9ebeb6260945e49e29403bfd278cdbf2e6d2e65c8ad313", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "8f01385503efca513e9ebeb6260945e49e29403bfd278cdbf2e6d2e65c8ad313", kill_on_drop: false }`
[INFO] [stdout] 8f01385503efca513e9ebeb6260945e49e29403bfd278cdbf2e6d2e65c8ad313
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-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] 331e7f6f045cf00eae674aabf416f7afb33e29ae949307d25e4e59735c923a10
[INFO] running `Command { std: "docker" "start" "-a" "331e7f6f045cf00eae674aabf416f7afb33e29ae949307d25e4e59735c923a10", kill_on_drop: false }`
[INFO] [stderr]    Compiling log v0.4.14
[INFO] [stderr]     Checking ppv-lite86 v0.2.17
[INFO] [stderr]    Compiling tao-log v1.0.1
[INFO] [stderr]    Compiling crc32fast v1.4.0
[INFO] [stderr]    Compiling olio v1.4.0
[INFO] [stderr]     Checking alloc-no-stdlib v2.0.4
[INFO] [stderr]     Checking getrandom v0.2.12
[INFO] [stderr]     Checking memmap v0.7.0
[INFO] [stderr]     Checking alloc-stdlib v0.2.2
[INFO] [stderr]     Checking bytes v1.1.0
[INFO] [stderr]     Checking remove_dir_all v0.5.2
[INFO] [stderr]     Checking rand_core v0.6.4
[INFO] [stderr]    Compiling body-image v2.2.3
[INFO] [stderr]    Compiling httparse v1.4.1
[INFO] [stderr]     Checking brotli-decompressor v2.3.5
[INFO] [stderr]     Checking http v0.2.12
[INFO] [stderr]     Checking miniz_oxide v0.7.2
[INFO] [stderr]     Checking rand_chacha v0.3.1
[INFO] [stderr]    Compiling piccolog v1.0.3
[INFO] [stderr]    Compiling barc v2.2.2 (/opt/rustwide/workdir)
[INFO] [stderr]     Checking rand v0.8.5
[INFO] [stderr]     Checking flate2 v1.0.28
[INFO] [stderr]     Checking brotli v3.3.4
[INFO] [stderr]     Checking tempfile v3.2.0
[INFO] [stdout] warning: the item `Path` is imported redundantly
[INFO] [stdout]     --> src/lib.rs:1176:21
[INFO] [stdout]      |
[INFO] [stdout] 1176 |     use std::path::{Path, PathBuf};
[INFO] [stdout]      |                     ^^^^
[INFO] [stdout] 1177 |     use http::header::{AGE, REFERER, VIA};
[INFO] [stdout] 1178 |     use super::*;
[INFO] [stdout]      |         -------- the item `Path` is already imported here
[INFO] [stdout]      |
[INFO] [stdout]      = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 10.81s
[INFO] running `Command { std: "docker" "inspect" "331e7f6f045cf00eae674aabf416f7afb33e29ae949307d25e4e59735c923a10", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "331e7f6f045cf00eae674aabf416f7afb33e29ae949307d25e4e59735c923a10", kill_on_drop: false }`
[INFO] [stdout] 331e7f6f045cf00eae674aabf416f7afb33e29ae949307d25e4e59735c923a10