[INFO] fetching crate tracers-dyn-noop 0.1.0...
[INFO] checking tracers-dyn-noop-0.1.0 against master#385fa9d845dd326c6bbfd58c22244215e431948a for absurd-question-mark-desugar
[INFO] extracting crate tracers-dyn-noop 0.1.0 into /workspace/builds/worker-3-tc1/source
[INFO] validating manifest of crates.io crate tracers-dyn-noop 0.1.0 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 tracers-dyn-noop 0.1.0
[INFO] finished tweaking crates.io crate tracers-dyn-noop 0.1.0
[INFO] tweaked toml for crates.io crate tracers-dyn-noop 0.1.0 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]      Locking 25 packages
[INFO] [stderr]       Adding heck v0.3.3 (latest: v0.5.0)
[INFO] [stderr]       Adding object v0.32.2 (latest: v0.34.0)
[INFO] [stderr]       Adding strum v0.16.0 (latest: v0.26.2)
[INFO] [stderr]       Adding strum_macros v0.16.0 (latest: v0.26.2)
[INFO] [stderr]       Adding syn v1.0.109 (latest: v2.0.58)
[INFO] [stderr]       Adding synstructure v0.12.6 (latest: v0.13.1)
[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 tracers-core v0.1.0
[INFO] [stderr]   Downloaded strum v0.16.0
[INFO] [stderr]   Downloaded strum_macros v0.16.0
[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] 4beae3d761f9e4b614f51f141326e45c6fddb14c9a934cdb0430ba568dbc2d6f
[INFO] running `Command { std: "docker" "start" "-a" "4beae3d761f9e4b614f51f141326e45c6fddb14c9a934cdb0430ba568dbc2d6f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "4beae3d761f9e4b614f51f141326e45c6fddb14c9a934cdb0430ba568dbc2d6f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "4beae3d761f9e4b614f51f141326e45c6fddb14c9a934cdb0430ba568dbc2d6f", kill_on_drop: false }`
[INFO] [stdout] 4beae3d761f9e4b614f51f141326e45c6fddb14c9a934cdb0430ba568dbc2d6f
[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] 85d2b1e7686ed3e6899bab803251e16d983ca7c1543a27f641f89e6609fe92f7
[INFO] running `Command { std: "docker" "start" "-a" "85d2b1e7686ed3e6899bab803251e16d983ca7c1543a27f641f89e6609fe92f7", kill_on_drop: false }`
[INFO] [stderr]    Compiling gimli v0.28.1
[INFO] [stderr]    Compiling adler v1.0.2
[INFO] [stderr]    Compiling memchr v2.7.2
[INFO] [stderr]    Compiling rustc-demangle v0.1.23
[INFO] [stderr]     Checking strum v0.16.0
[INFO] [stderr]    Compiling libc v0.2.153
[INFO] [stderr]    Compiling strum_macros v0.16.0
[INFO] [stderr]     Checking failure v0.1.8
[INFO] [stderr]    Compiling miniz_oxide v0.7.2
[INFO] [stderr]    Compiling object v0.32.2
[INFO] [stderr]    Compiling addr2line v0.21.0
[INFO] [stderr]    Compiling backtrace v0.3.71
[INFO] [stderr]    Compiling tracers-core v0.1.0
[INFO] [stderr]    Compiling tracers-dyn-noop v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 6.45s
[INFO] running `Command { std: "docker" "inspect" "85d2b1e7686ed3e6899bab803251e16d983ca7c1543a27f641f89e6609fe92f7", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "85d2b1e7686ed3e6899bab803251e16d983ca7c1543a27f641f89e6609fe92f7", kill_on_drop: false }`
[INFO] [stdout] 85d2b1e7686ed3e6899bab803251e16d983ca7c1543a27f641f89e6609fe92f7