[INFO] fetching crate burden 0.2.1...
[INFO] checking burden-0.2.1 against master#385fa9d845dd326c6bbfd58c22244215e431948a for absurd-question-mark-desugar
[INFO] extracting crate burden 0.2.1 into /workspace/builds/worker-0-tc1/source
[INFO] validating manifest of crates.io crate burden 0.2.1 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 burden 0.2.1
[INFO] finished tweaking crates.io crate burden 0.2.1
[INFO] tweaked toml for crates.io crate burden 0.2.1 written to /workspace/builds/worker-0-tc1/source/Cargo.toml
[INFO] crate crates.io crate burden 0.2.1 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]     Updating crates.io index
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded signal-hook v0.3.14
[INFO] [stderr]   Downloaded cargo-platform v0.1.2
[INFO] [stderr]   Downloaded cargo_metadata v0.15.0
[INFO] [stderr]   Downloaded crossterm v0.25.0
[INFO] [stderr]   Downloaded camino v1.1.1
[INFO] [stderr]   Downloaded semver v1.0.13
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-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] 1642dea9d4f1b3735a81cab82814d6e2576447cbf000b93e73b549a9a8ae8256
[INFO] running `Command { std: "docker" "start" "-a" "1642dea9d4f1b3735a81cab82814d6e2576447cbf000b93e73b549a9a8ae8256", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "1642dea9d4f1b3735a81cab82814d6e2576447cbf000b93e73b549a9a8ae8256", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "1642dea9d4f1b3735a81cab82814d6e2576447cbf000b93e73b549a9a8ae8256", kill_on_drop: false }`
[INFO] [stdout] 1642dea9d4f1b3735a81cab82814d6e2576447cbf000b93e73b549a9a8ae8256
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-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] c2a734e1caf9ff1e6502dd0520ec27e76f3f256648efd365889bc016023776f5
[INFO] running `Command { std: "docker" "start" "-a" "c2a734e1caf9ff1e6502dd0520ec27e76f3f256648efd365889bc016023776f5", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.43
[INFO] [stderr]    Compiling unicode-ident v1.0.3
[INFO] [stderr]    Compiling quote v1.0.21
[INFO] [stderr]    Compiling syn v1.0.99
[INFO] [stderr]    Compiling libc v0.2.132
[INFO] [stderr]    Compiling serde_derive v1.0.144
[INFO] [stderr]    Compiling serde v1.0.144
[INFO] [stderr]    Compiling autocfg v1.1.0
[INFO] [stderr]    Compiling log v0.4.17
[INFO] [stderr]    Compiling parking_lot_core v0.9.3
[INFO] [stderr]    Compiling signal-hook v0.3.14
[INFO] [stderr]     Checking smallvec v1.9.0
[INFO] [stderr]    Compiling serde_json v1.0.85
[INFO] [stderr]    Compiling camino v1.1.1
[INFO] [stderr]    Compiling semver v1.0.13
[INFO] [stderr]     Checking itoa v1.0.3
[INFO] [stderr]     Checking ryu v1.0.11
[INFO] [stderr]    Compiling lock_api v0.4.7
[INFO] [stderr]     Checking signal-hook-registry v1.4.0
[INFO] [stderr]     Checking mio v0.8.4
[INFO] [stderr]     Checking parking_lot v0.12.1
[INFO] [stderr]     Checking signal-hook-mio v0.2.3
[INFO] [stderr]     Checking crossterm v0.25.0
[INFO] [stderr]     Checking cargo-platform v0.1.2
[INFO] [stderr]     Checking cargo_metadata v0.15.0
[INFO] [stderr]     Checking burden v0.2.1 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 13.56s
[INFO] running `Command { std: "docker" "inspect" "c2a734e1caf9ff1e6502dd0520ec27e76f3f256648efd365889bc016023776f5", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "c2a734e1caf9ff1e6502dd0520ec27e76f3f256648efd365889bc016023776f5", kill_on_drop: false }`
[INFO] [stdout] c2a734e1caf9ff1e6502dd0520ec27e76f3f256648efd365889bc016023776f5