[INFO] fetching crate vim-foldtree 0.1.0...
[INFO] checking vim-foldtree-0.1.0 against master#385fa9d845dd326c6bbfd58c22244215e431948a for absurd-question-mark-desugar
[INFO] extracting crate vim-foldtree 0.1.0 into /workspace/builds/worker-1-tc1/source
[INFO] validating manifest of crates.io crate vim-foldtree 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 vim-foldtree 0.1.0
[INFO] finished tweaking crates.io crate vim-foldtree 0.1.0
[INFO] tweaked toml for crates.io crate vim-foldtree 0.1.0 written to /workspace/builds/worker-1-tc1/source/Cargo.toml
[INFO] crate crates.io crate vim-foldtree 0.1.0 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] 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] e970545121e38a23b33b6ffc19f47b0d46c61d2b9859fbc7084e08b6ba038f0f
[INFO] running `Command { std: "docker" "start" "-a" "e970545121e38a23b33b6ffc19f47b0d46c61d2b9859fbc7084e08b6ba038f0f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "e970545121e38a23b33b6ffc19f47b0d46c61d2b9859fbc7084e08b6ba038f0f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "e970545121e38a23b33b6ffc19f47b0d46c61d2b9859fbc7084e08b6ba038f0f", kill_on_drop: false }`
[INFO] [stdout] e970545121e38a23b33b6ffc19f47b0d46c61d2b9859fbc7084e08b6ba038f0f
[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] 95d1b49dfe8076ad3873d4e8914d610d7e246ae6e5db275e6c36f1f3edde420b
[INFO] running `Command { std: "docker" "start" "-a" "95d1b49dfe8076ad3873d4e8914d610d7e246ae6e5db275e6c36f1f3edde420b", kill_on_drop: false }`
[INFO] [stderr]    Compiling memchr v2.5.0
[INFO] [stderr]     Checking regex-syntax v0.6.28
[INFO] [stderr]     Checking static_assertions v1.1.0
[INFO] [stderr]    Compiling smartstring v1.0.1
[INFO] [stderr]     Checking aho-corasick v0.7.20
[INFO] [stderr]     Checking regex v1.7.1
[INFO] [stderr]     Checking vim-foldtree v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: field `0` is never read
[INFO] [stdout]   --> src/main.rs:11:16
[INFO] [stdout]    |
[INFO] [stdout] 11 |   IndentedText(u32),
[INFO] [stdout]    |   ------------ ^^^
[INFO] [stdout]    |   |
[INFO] [stdout]    |   field in this variant
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] help: consider changing the field to be of unit type to suppress this warning while preserving the field numbering, or remove the field
[INFO] [stdout]    |
[INFO] [stdout] 11 |   IndentedText(()),
[INFO] [stdout]    |                ~~
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `0` is never read
[INFO] [stdout]   --> src/main.rs:11:16
[INFO] [stdout]    |
[INFO] [stdout] 11 |   IndentedText(u32),
[INFO] [stdout]    |   ------------ ^^^
[INFO] [stdout]    |   |
[INFO] [stdout]    |   field in this variant
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] help: consider changing the field to be of unit type to suppress this warning while preserving the field numbering, or remove the field
[INFO] [stdout]    |
[INFO] [stdout] 11 |   IndentedText(()),
[INFO] [stdout]    |                ~~
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 4.52s
[INFO] running `Command { std: "docker" "inspect" "95d1b49dfe8076ad3873d4e8914d610d7e246ae6e5db275e6c36f1f3edde420b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "95d1b49dfe8076ad3873d4e8914d610d7e246ae6e5db275e6c36f1f3edde420b", kill_on_drop: false }`
[INFO] [stdout] 95d1b49dfe8076ad3873d4e8914d610d7e246ae6e5db275e6c36f1f3edde420b