[INFO] cloning repository https://github.com/Bitshift-Variations-Humanized/bitshift-variations-rusted
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/Bitshift-Variations-Humanized/bitshift-variations-rusted" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FBitshift-Variations-Humanized%2Fbitshift-variations-rusted", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FBitshift-Variations-Humanized%2Fbitshift-variations-rusted'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] f1195e8928d44095b98f9f7c3e34302daae4bf09
[INFO] checking Bitshift-Variations-Humanized/bitshift-variations-rusted against master#385fa9d845dd326c6bbfd58c22244215e431948a for absurd-question-mark-desugar
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FBitshift-Variations-Humanized%2Fbitshift-variations-rusted" "/workspace/builds/worker-4-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-4-tc1/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/Bitshift-Variations-Humanized/bitshift-variations-rusted 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/Bitshift-Variations-Humanized/bitshift-variations-rusted
[INFO] finished tweaking git repo https://github.com/Bitshift-Variations-Humanized/bitshift-variations-rusted
[INFO] tweaked toml for git repo https://github.com/Bitshift-Variations-Humanized/bitshift-variations-rusted written to /workspace/builds/worker-4-tc1/source/Cargo.toml
[INFO] crate git repo https://github.com/Bitshift-Variations-Humanized/bitshift-variations-rusted 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]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded midly v0.5.2
[INFO] [stderr]   Downloaded crossbeam-utils v0.8.9
[INFO] [stderr]   Downloaded crossbeam-epoch v0.9.9
[INFO] [stderr]   Downloaded crossbeam-channel v0.5.5
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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] 20ee3c6c6ccad68cc6b7e903ddd7147fd79eff17e6915a8be10c23d560ada649
[INFO] running `Command { std: "docker" "start" "-a" "20ee3c6c6ccad68cc6b7e903ddd7147fd79eff17e6915a8be10c23d560ada649", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "20ee3c6c6ccad68cc6b7e903ddd7147fd79eff17e6915a8be10c23d560ada649", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "20ee3c6c6ccad68cc6b7e903ddd7147fd79eff17e6915a8be10c23d560ada649", kill_on_drop: false }`
[INFO] [stdout] 20ee3c6c6ccad68cc6b7e903ddd7147fd79eff17e6915a8be10c23d560ada649
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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] 4059d1abe1971c4a2a5300d4568f172e7fafeefecc98909af756b53191d79089
[INFO] running `Command { std: "docker" "start" "-a" "4059d1abe1971c4a2a5300d4568f172e7fafeefecc98909af756b53191d79089", kill_on_drop: false }`
[INFO] [stderr]    Compiling autocfg v1.1.0
[INFO] [stderr]    Compiling crossbeam-utils v0.8.9
[INFO] [stderr]     Checking cfg-if v1.0.0
[INFO] [stderr]     Checking once_cell v1.12.0
[INFO] [stderr]    Compiling libc v0.2.126
[INFO] [stderr]     Checking scopeguard v1.1.0
[INFO] [stderr]    Compiling rayon-core v1.9.3
[INFO] [stderr]     Checking either v1.6.1
[INFO] [stderr]    Compiling memoffset v0.6.5
[INFO] [stderr]    Compiling crossbeam-epoch v0.9.9
[INFO] [stderr]    Compiling rayon v1.5.3
[INFO] [stderr]     Checking crossbeam-channel v0.5.5
[INFO] [stderr]     Checking num_cpus v1.13.1
[INFO] [stderr]     Checking crossbeam-deque v0.8.1
[INFO] [stderr]     Checking midly v0.5.2
[INFO] [stderr]     Checking rusted-variations v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 6.61s
[INFO] running `Command { std: "docker" "inspect" "4059d1abe1971c4a2a5300d4568f172e7fafeefecc98909af756b53191d79089", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "4059d1abe1971c4a2a5300d4568f172e7fafeefecc98909af756b53191d79089", kill_on_drop: false }`
[INFO] [stdout] 4059d1abe1971c4a2a5300d4568f172e7fafeefecc98909af756b53191d79089
[INFO] checking Bitshift-Variations-Humanized/bitshift-variations-rusted against try#645bb72776a6a56a1a8f52631a44bd082b2ba509 for absurd-question-mark-desugar
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FBitshift-Variations-Humanized%2Fbitshift-variations-rusted" "/workspace/builds/worker-4-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-4-tc2/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/Bitshift-Variations-Humanized/bitshift-variations-rusted 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 git repo https://github.com/Bitshift-Variations-Humanized/bitshift-variations-rusted
[INFO] finished tweaking git repo https://github.com/Bitshift-Variations-Humanized/bitshift-variations-rusted
[INFO] tweaked toml for git repo https://github.com/Bitshift-Variations-Humanized/bitshift-variations-rusted written to /workspace/builds/worker-4-tc2/source/Cargo.toml
[INFO] crate git repo https://github.com/Bitshift-Variations-Humanized/bitshift-variations-rusted 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-4-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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] d6464dd8b3dfcf2c0354f8b7f9eb41877b89bce1a4e01c3ab594c93b4cd08c06
[INFO] running `Command { std: "docker" "start" "-a" "d6464dd8b3dfcf2c0354f8b7f9eb41877b89bce1a4e01c3ab594c93b4cd08c06", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "d6464dd8b3dfcf2c0354f8b7f9eb41877b89bce1a4e01c3ab594c93b4cd08c06", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "d6464dd8b3dfcf2c0354f8b7f9eb41877b89bce1a4e01c3ab594c93b4cd08c06", kill_on_drop: false }`
[INFO] [stdout] d6464dd8b3dfcf2c0354f8b7f9eb41877b89bce1a4e01c3ab594c93b4cd08c06
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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] 70ac88fb57ee134da5894896a820a9f34be4d761ca431d9fed8d769bdbf32296
[INFO] running `Command { std: "docker" "start" "-a" "70ac88fb57ee134da5894896a820a9f34be4d761ca431d9fed8d769bdbf32296", kill_on_drop: false }`
[INFO] [stderr]    Compiling autocfg v1.1.0
[INFO] [stderr]    Compiling crossbeam-utils v0.8.9
[INFO] [stderr]     Checking once_cell v1.12.0
[INFO] [stderr]     Checking cfg-if v1.0.0
[INFO] [stderr]    Compiling libc v0.2.126
[INFO] [stderr]    Compiling rayon-core v1.9.3
[INFO] [stderr]     Checking scopeguard v1.1.0
[INFO] [stderr]     Checking either v1.6.1
[INFO] [stderr]    Compiling memoffset v0.6.5
[INFO] [stderr]    Compiling crossbeam-epoch v0.9.9
[INFO] [stderr]    Compiling rayon v1.5.3
[INFO] [stderr]     Checking crossbeam-channel v0.5.5
[INFO] [stderr]     Checking crossbeam-deque v0.8.1
[INFO] [stderr]     Checking num_cpus v1.13.1
[INFO] [stderr]     Checking midly v0.5.2
[INFO] [stdout] error[E0282]: type annotations needed
[INFO] [stdout]    --> /opt/rustwide/cargo-home/registry/src/index.crates.io-6f17d22bba15001f/midly-0.5.2/src/smf.rs:739:25
[INFO] [stdout]     |
[INFO] [stdout] 739 |                         Err(err).context(err_malformed!("malformed event"))?;
[INFO] [stdout]     |                         ^^^ cannot infer type of the type parameter `T` declared on the enum `Result`
[INFO] [stdout]     |
[INFO] [stdout] help: consider specifying the generic arguments
[INFO] [stdout]     |
[INFO] [stdout] 739 |                         Err::<T, error::Error>(err).context(err_malformed!("malformed event"))?;
[INFO] [stdout]     |                            +++++++++++++++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 1 previous error
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0282`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `midly` (lib) due to 2 previous errors
[INFO] running `Command { std: "docker" "inspect" "70ac88fb57ee134da5894896a820a9f34be4d761ca431d9fed8d769bdbf32296", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "70ac88fb57ee134da5894896a820a9f34be4d761ca431d9fed8d769bdbf32296", kill_on_drop: false }`
[INFO] [stdout] 70ac88fb57ee134da5894896a820a9f34be4d761ca431d9fed8d769bdbf32296