[INFO] fetching crate exhibit 0.2.0...
[INFO] checking exhibit-0.2.0 against master#385fa9d845dd326c6bbfd58c22244215e431948a for absurd-question-mark-desugar
[INFO] extracting crate exhibit 0.2.0 into /workspace/builds/worker-2-tc1/source
[INFO] validating manifest of crates.io crate exhibit 0.2.0 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 exhibit 0.2.0
[INFO] removed 0 missing examples
[INFO] finished tweaking crates.io crate exhibit 0.2.0
[INFO] tweaked toml for crates.io crate exhibit 0.2.0 written to /workspace/builds/worker-2-tc1/source/Cargo.toml
[INFO] crate crates.io crate exhibit 0.2.0 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 crossterm v0.24.0
[INFO] [stderr]   Downloaded lock_api v0.4.7
[INFO] [stderr]   Downloaded similar v2.1.0
[INFO] [stderr]   Downloaded redox_syscall v0.2.15
[INFO] [stderr]   Downloaded insta v1.16.0
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-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] 72ffb0c60bebab2548f218bb89ed1dce2e8b9f57d4831b27c3f21dbd7d694e29
[INFO] running `Command { std: "docker" "start" "-a" "72ffb0c60bebab2548f218bb89ed1dce2e8b9f57d4831b27c3f21dbd7d694e29", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "72ffb0c60bebab2548f218bb89ed1dce2e8b9f57d4831b27c3f21dbd7d694e29", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "72ffb0c60bebab2548f218bb89ed1dce2e8b9f57d4831b27c3f21dbd7d694e29", kill_on_drop: false }`
[INFO] [stdout] 72ffb0c60bebab2548f218bb89ed1dce2e8b9f57d4831b27c3f21dbd7d694e29
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-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] 6b32e68ce2cc8891232d558fb4c6707247fb143811bb4d6d43da69cc86d1d615
[INFO] running `Command { std: "docker" "start" "-a" "6b32e68ce2cc8891232d558fb4c6707247fb143811bb4d6d43da69cc86d1d615", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.40
[INFO] [stderr]    Compiling libc v0.2.126
[INFO] [stderr]    Compiling unicode-ident v1.0.2
[INFO] [stderr]    Compiling quote v1.0.20
[INFO] [stderr]    Compiling syn v1.0.98
[INFO] [stderr]    Compiling serde_derive v1.0.140
[INFO] [stderr]    Compiling log v0.4.17
[INFO] [stderr]    Compiling signal-hook v0.3.14
[INFO] [stderr]    Compiling parking_lot_core v0.9.3
[INFO] [stderr]    Compiling serde v1.0.140
[INFO] [stderr]     Checking smallvec v1.9.0
[INFO] [stderr]     Checking scopeguard v1.1.0
[INFO] [stderr]     Checking utf8parse v0.2.0
[INFO] [stderr]    Compiling serde_json v1.0.82
[INFO] [stderr]    Compiling lock_api v0.4.7
[INFO] [stderr]     Checking arrayvec v0.5.2
[INFO] [stderr]     Checking ryu v1.0.10
[INFO] [stderr]     Checking linked-hash-map v0.5.6
[INFO] [stderr]     Checking similar v2.1.0
[INFO] [stderr]     Checking itoa v1.0.2
[INFO] [stderr]     Checking once_cell v1.13.0
[INFO] [stderr]     Checking yaml-rust v0.4.5
[INFO] [stderr]     Checking unicode-width v0.1.9
[INFO] [stderr]     Checking signal-hook-registry v1.4.0
[INFO] [stderr]     Checking mio v0.8.4
[INFO] [stderr]     Checking terminal_size v0.1.17
[INFO] [stderr]     Checking console v0.15.0
[INFO] [stderr]     Checking parking_lot v0.12.1
[INFO] [stderr]    Compiling vte_generate_state_changes v0.1.1
[INFO] [stderr]     Checking signal-hook-mio v0.2.3
[INFO] [stderr]     Checking crossterm v0.24.0
[INFO] [stderr]     Checking vte v0.10.1
[INFO] [stderr]     Checking strip-ansi-escapes v0.1.1
[INFO] [stderr]     Checking exhibit v0.2.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Checking serde_yaml v0.8.26
[INFO] [stderr]     Checking insta v1.16.0
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 13.63s
[INFO] running `Command { std: "docker" "inspect" "6b32e68ce2cc8891232d558fb4c6707247fb143811bb4d6d43da69cc86d1d615", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "6b32e68ce2cc8891232d558fb4c6707247fb143811bb4d6d43da69cc86d1d615", kill_on_drop: false }`
[INFO] [stdout] 6b32e68ce2cc8891232d558fb4c6707247fb143811bb4d6d43da69cc86d1d615
[INFO] checking exhibit-0.2.0 against try#645bb72776a6a56a1a8f52631a44bd082b2ba509 for absurd-question-mark-desugar
[INFO] extracting crate exhibit 0.2.0 into /workspace/builds/worker-2-tc2/source
[INFO] validating manifest of crates.io crate exhibit 0.2.0 on toolchain 645bb72776a6a56a1a8f52631a44bd082b2ba509
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+645bb72776a6a56a1a8f52631a44bd082b2ba509" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate exhibit 0.2.0
[INFO] removed 0 missing examples
[INFO] finished tweaking crates.io crate exhibit 0.2.0
[INFO] tweaked toml for crates.io crate exhibit 0.2.0 written to /workspace/builds/worker-2-tc2/source/Cargo.toml
[INFO] crate crates.io crate exhibit 0.2.0 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" "+645bb72776a6a56a1a8f52631a44bd082b2ba509" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc2/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" "+645bb72776a6a56a1a8f52631a44bd082b2ba509" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] e1f89a8b36a973f09a4b790a0214448c850c5e33e28f24c247ae4ed3f33a9d5d
[INFO] running `Command { std: "docker" "start" "-a" "e1f89a8b36a973f09a4b790a0214448c850c5e33e28f24c247ae4ed3f33a9d5d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "e1f89a8b36a973f09a4b790a0214448c850c5e33e28f24c247ae4ed3f33a9d5d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "e1f89a8b36a973f09a4b790a0214448c850c5e33e28f24c247ae4ed3f33a9d5d", kill_on_drop: false }`
[INFO] [stdout] e1f89a8b36a973f09a4b790a0214448c850c5e33e28f24c247ae4ed3f33a9d5d
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc2/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" "+645bb72776a6a56a1a8f52631a44bd082b2ba509" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] ffb44a543f091208be5f70b337eafd38d334ca2de5083eb1f0fa13895cc15e03
[INFO] running `Command { std: "docker" "start" "-a" "ffb44a543f091208be5f70b337eafd38d334ca2de5083eb1f0fa13895cc15e03", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.40
[INFO] [stderr]    Compiling libc v0.2.126
[INFO] [stderr]    Compiling quote v1.0.20
[INFO] [stderr]    Compiling unicode-ident v1.0.2
[INFO] [stderr]    Compiling syn v1.0.98
[INFO] [stderr]    Compiling log v0.4.17
[INFO] [stderr]    Compiling serde_derive v1.0.140
[INFO] [stderr]    Compiling signal-hook v0.3.14
[INFO] [stderr]    Compiling parking_lot_core v0.9.3
[INFO] [stderr]    Compiling serde v1.0.140
[INFO] [stderr]     Checking scopeguard v1.1.0
[INFO] [stderr]     Checking smallvec v1.9.0
[INFO] [stderr]     Checking ryu v1.0.10
[INFO] [stderr]    Compiling serde_json v1.0.82
[INFO] [stderr]    Compiling lock_api v0.4.7
[INFO] [stderr]     Checking arrayvec v0.5.2
[INFO] [stderr]     Checking utf8parse v0.2.0
[INFO] [stderr]     Checking linked-hash-map v0.5.6
[INFO] [stderr]     Checking once_cell v1.13.0
[INFO] [stderr]     Checking similar v2.1.0
[INFO] [stderr]     Checking yaml-rust v0.4.5
[INFO] [stderr]     Checking itoa v1.0.2
[INFO] [stderr]     Checking unicode-width v0.1.9
[INFO] [stderr]     Checking signal-hook-registry v1.4.0
[INFO] [stderr]     Checking mio v0.8.4
[INFO] [stderr]     Checking terminal_size v0.1.17
[INFO] [stderr]     Checking console v0.15.0
[INFO] [stderr]     Checking parking_lot v0.12.1
[INFO] [stderr]    Compiling vte_generate_state_changes v0.1.1
[INFO] [stderr]     Checking signal-hook-mio v0.2.3
[INFO] [stderr]     Checking crossterm v0.24.0
[INFO] [stderr]     Checking vte v0.10.1
[INFO] [stderr]     Checking strip-ansi-escapes v0.1.1
[INFO] [stderr]     Checking exhibit v0.2.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Checking serde_yaml v0.8.26
[INFO] [stderr]     Checking insta v1.16.0
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 13.52s
[INFO] running `Command { std: "docker" "inspect" "ffb44a543f091208be5f70b337eafd38d334ca2de5083eb1f0fa13895cc15e03", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "ffb44a543f091208be5f70b337eafd38d334ca2de5083eb1f0fa13895cc15e03", kill_on_drop: false }`
[INFO] [stdout] ffb44a543f091208be5f70b337eafd38d334ca2de5083eb1f0fa13895cc15e03