[INFO] cloning repository https://github.com/amnaredo/headr
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/amnaredo/headr" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Famnaredo%2Fheadr", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Famnaredo%2Fheadr'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 6cbc8cdb7b5ddf28d7cce84c8339952e329423b1
[INFO] checking amnaredo/headr against master#385fa9d845dd326c6bbfd58c22244215e431948a for absurd-question-mark-desugar
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Famnaredo%2Fheadr" "/workspace/builds/worker-5-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-5-tc1/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/amnaredo/headr 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 git repo https://github.com/amnaredo/headr
[INFO] finished tweaking git repo https://github.com/amnaredo/headr
[INFO] tweaked toml for git repo https://github.com/amnaredo/headr written to /workspace/builds/worker-5-tc1/source/Cargo.toml
[INFO] crate git repo https://github.com/amnaredo/headr already has a lockfile, it will not be regenerated
[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 assert_cmd v1.0.8
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-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] 1d1b10467d8765e0f13114636d08a3fafb1b38bfc9e816b21dd23ee13d7fdd72
[INFO] running `Command { std: "docker" "start" "-a" "1d1b10467d8765e0f13114636d08a3fafb1b38bfc9e816b21dd23ee13d7fdd72", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "1d1b10467d8765e0f13114636d08a3fafb1b38bfc9e816b21dd23ee13d7fdd72", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "1d1b10467d8765e0f13114636d08a3fafb1b38bfc9e816b21dd23ee13d7fdd72", kill_on_drop: false }`
[INFO] [stdout] 1d1b10467d8765e0f13114636d08a3fafb1b38bfc9e816b21dd23ee13d7fdd72
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-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] 1031c02e8e6c7533a17931df202ad27a5e5bb129eee97b2fa60dd8f3532529db
[INFO] running `Command { std: "docker" "start" "-a" "1031c02e8e6c7533a17931df202ad27a5e5bb129eee97b2fa60dd8f3532529db", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.117
[INFO] [stderr]     Checking predicates-core v1.0.3
[INFO] [stderr]     Checking unicode-width v0.1.9
[INFO] [stderr]     Checking strsim v0.8.0
[INFO] [stderr]    Compiling num-traits v0.2.14
[INFO] [stderr]     Checking ansi_term v0.12.1
[INFO] [stderr]    Compiling doc-comment v0.3.3
[INFO] [stderr]     Checking vec_map v0.8.2
[INFO] [stderr]     Checking textwrap v0.11.0
[INFO] [stderr]     Checking either v1.6.1
[INFO] [stderr]     Checking termtree v0.2.4
[INFO] [stderr]     Checking ppv-lite86 v0.2.16
[INFO] [stderr]     Checking itertools v0.10.3
[INFO] [stderr]     Checking regex-automata v0.1.10
[INFO] [stderr]     Checking difflib v0.4.0
[INFO] [stderr]     Checking predicates-tree v1.0.5
[INFO] [stderr]     Checking bstr v0.2.17
[INFO] [stderr]     Checking getrandom v0.2.4
[INFO] [stderr]     Checking atty v0.2.14
[INFO] [stderr]     Checking wait-timeout v0.2.0
[INFO] [stderr]     Checking clap v2.34.0
[INFO] [stderr]     Checking rand_core v0.6.3
[INFO] [stderr]     Checking float-cmp v0.8.0
[INFO] [stderr]     Checking rand_chacha v0.3.1
[INFO] [stderr]     Checking predicates v1.0.8
[INFO] [stderr]     Checking rand v0.8.4
[INFO] [stderr]     Checking predicates v2.1.1
[INFO] [stderr]     Checking assert_cmd v1.0.8
[INFO] [stderr]     Checking headr v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 7.24s
[INFO] running `Command { std: "docker" "inspect" "1031c02e8e6c7533a17931df202ad27a5e5bb129eee97b2fa60dd8f3532529db", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "1031c02e8e6c7533a17931df202ad27a5e5bb129eee97b2fa60dd8f3532529db", kill_on_drop: false }`
[INFO] [stdout] 1031c02e8e6c7533a17931df202ad27a5e5bb129eee97b2fa60dd8f3532529db