[INFO] cloning repository https://github.com/maekawatoshiki/ccc
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/maekawatoshiki/ccc" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fmaekawatoshiki%2Fccc", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fmaekawatoshiki%2Fccc'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 5c8bb26f31f612f812f2887d30f4eb3b18021206
[INFO] checking maekawatoshiki/ccc against master#385fa9d845dd326c6bbfd58c22244215e431948a for absurd-question-mark-desugar
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fmaekawatoshiki%2Fccc" "/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/maekawatoshiki/ccc 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/maekawatoshiki/ccc
[INFO] finished tweaking git repo https://github.com/maekawatoshiki/ccc
[INFO] tweaked toml for git repo https://github.com/maekawatoshiki/ccc written to /workspace/builds/worker-4-tc1/source/Cargo.toml
[INFO] crate git repo https://github.com/maekawatoshiki/ccc 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 git repository `https://github.com/TheDan64/inkwell`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded lang-c v0.11.0
[INFO] [stderr]   Downloaded llvm-sys v130.0.3
[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] b6cc3f2c03fe534fa9985bade00d7f144571f99b4a43198bb9d9cdbebb131f51
[INFO] running `Command { std: "docker" "start" "-a" "b6cc3f2c03fe534fa9985bade00d7f144571f99b4a43198bb9d9cdbebb131f51", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "b6cc3f2c03fe534fa9985bade00d7f144571f99b4a43198bb9d9cdbebb131f51", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "b6cc3f2c03fe534fa9985bade00d7f144571f99b4a43198bb9d9cdbebb131f51", kill_on_drop: false }`
[INFO] [stdout] b6cc3f2c03fe534fa9985bade00d7f144571f99b4a43198bb9d9cdbebb131f51
[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] 40cd6830c9e1e5a533412f87440318a45601032f18c1de4487ac27869e319cb6
[INFO] running `Command { std: "docker" "start" "-a" "40cd6830c9e1e5a533412f87440318a45601032f18c1de4487ac27869e319cb6", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.122
[INFO] [stderr]    Compiling syn v1.0.91
[INFO] [stderr]    Compiling ucd-trie v0.1.3
[INFO] [stderr]    Compiling regex-syntax v0.6.25
[INFO] [stderr]    Compiling cc v1.0.73
[INFO] [stderr]    Compiling log v0.4.16
[INFO] [stderr]    Compiling unicode-segmentation v1.9.0
[INFO] [stderr]    Compiling memchr v2.4.1
[INFO] [stderr]     Checking unicode-width v0.1.9
[INFO] [stderr]     Checking aho-corasick v0.7.18
[INFO] [stderr]    Compiling inkwell v0.1.0 (https://github.com/TheDan64/inkwell?branch=master#36c3b106)
[INFO] [stderr]     Checking either v1.6.1
[INFO] [stderr]     Checking humantime v2.1.0
[INFO] [stderr]     Checking lang-c v0.11.0
[INFO] [stderr]     Checking textwrap v0.11.0
[INFO] [stderr]    Compiling pest v2.1.3
[INFO] [stderr]    Compiling heck v0.3.3
[INFO] [stderr]    Compiling semver-parser v0.10.2
[INFO] [stderr]     Checking regex v1.5.5
[INFO] [stderr]     Checking atty v0.2.14
[INFO] [stderr]     Checking parking_lot_core v0.9.2
[INFO] [stderr]     Checking clap v2.34.0
[INFO] [stderr]    Compiling semver v0.11.0
[INFO] [stderr]     Checking parking_lot v0.12.0
[INFO] [stderr]     Checking env_logger v0.9.0
[INFO] [stderr]    Compiling proc-macro-error v1.0.4
[INFO] [stderr]    Compiling llvm-sys v130.0.3
[INFO] [stderr]    Compiling inkwell_internals v0.5.0 (https://github.com/TheDan64/inkwell?branch=master#36c3b106)
[INFO] [stderr]    Compiling structopt-derive v0.4.18
[INFO] [stderr]    Compiling thiserror-impl v1.0.30
[INFO] [stderr]     Checking thiserror v1.0.30
[INFO] [stderr]     Checking structopt v0.3.26
[INFO] [stderr]     Checking ccc v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: the item `log` is imported redundantly
[INFO] [stdout]  --> src/compile.rs:6:5
[INFO] [stdout]   |
[INFO] [stdout] 6 | use log;
[INFO] [stdout]   |     ^^^ the item `log` is already defined by prelude
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `log` is imported redundantly
[INFO] [stdout]  --> src/compile.rs:6:5
[INFO] [stdout]   |
[INFO] [stdout] 6 | use log;
[INFO] [stdout]   |     ^^^ the item `log` is already defined by prelude
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 10.88s
[INFO] running `Command { std: "docker" "inspect" "40cd6830c9e1e5a533412f87440318a45601032f18c1de4487ac27869e319cb6", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "40cd6830c9e1e5a533412f87440318a45601032f18c1de4487ac27869e319cb6", kill_on_drop: false }`
[INFO] [stdout] 40cd6830c9e1e5a533412f87440318a45601032f18c1de4487ac27869e319cb6
[INFO] checking maekawatoshiki/ccc against try#645bb72776a6a56a1a8f52631a44bd082b2ba509 for absurd-question-mark-desugar
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fmaekawatoshiki%2Fccc" "/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/maekawatoshiki/ccc 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/maekawatoshiki/ccc
[INFO] finished tweaking git repo https://github.com/maekawatoshiki/ccc
[INFO] tweaked toml for git repo https://github.com/maekawatoshiki/ccc written to /workspace/builds/worker-4-tc2/source/Cargo.toml
[INFO] crate git repo https://github.com/maekawatoshiki/ccc 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] 18364c46afe10835d4ca7fe1d3864302100f38feda6a4c4115d1e0b26759de76
[INFO] running `Command { std: "docker" "start" "-a" "18364c46afe10835d4ca7fe1d3864302100f38feda6a4c4115d1e0b26759de76", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "18364c46afe10835d4ca7fe1d3864302100f38feda6a4c4115d1e0b26759de76", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "18364c46afe10835d4ca7fe1d3864302100f38feda6a4c4115d1e0b26759de76", kill_on_drop: false }`
[INFO] [stdout] 18364c46afe10835d4ca7fe1d3864302100f38feda6a4c4115d1e0b26759de76
[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] 11fbf994d5508b8e6e08a525cc7e2dfe5496599db45a95958a7ed9b9a07837f7
[INFO] running `Command { std: "docker" "start" "-a" "11fbf994d5508b8e6e08a525cc7e2dfe5496599db45a95958a7ed9b9a07837f7", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.122
[INFO] [stderr]    Compiling syn v1.0.91
[INFO] [stderr]    Compiling ucd-trie v0.1.3
[INFO] [stderr]    Compiling regex-syntax v0.6.25
[INFO] [stderr]    Compiling cc v1.0.73
[INFO] [stderr]    Compiling log v0.4.16
[INFO] [stderr]    Compiling memchr v2.4.1
[INFO] [stderr]    Compiling unicode-segmentation v1.9.0
[INFO] [stderr]     Checking unicode-width v0.1.9
[INFO] [stderr]     Checking aho-corasick v0.7.18
[INFO] [stderr]    Compiling inkwell v0.1.0 (https://github.com/TheDan64/inkwell?branch=master#36c3b106)
[INFO] [stderr]     Checking humantime v2.1.0
[INFO] [stderr]     Checking either v1.6.1
[INFO] [stderr]     Checking lang-c v0.11.0
[INFO] [stderr]     Checking textwrap v0.11.0
[INFO] [stderr]    Compiling pest v2.1.3
[INFO] [stderr]    Compiling heck v0.3.3
[INFO] [stderr]    Compiling semver-parser v0.10.2
[INFO] [stderr]     Checking atty v0.2.14
[INFO] [stderr]     Checking parking_lot_core v0.9.2
[INFO] [stderr]     Checking clap v2.34.0
[INFO] [stderr]    Compiling semver v0.11.0
[INFO] [stderr]     Checking parking_lot v0.12.0
[INFO] [stderr]     Checking regex v1.5.5
[INFO] [stderr]     Checking env_logger v0.9.0
[INFO] [stderr]    Compiling proc-macro-error v1.0.4
[INFO] [stderr]    Compiling llvm-sys v130.0.3
[INFO] [stderr]    Compiling inkwell_internals v0.5.0 (https://github.com/TheDan64/inkwell?branch=master#36c3b106)
[INFO] [stderr]    Compiling structopt-derive v0.4.18
[INFO] [stderr]    Compiling thiserror-impl v1.0.30
[INFO] [stderr]     Checking thiserror v1.0.30
[INFO] [stderr]     Checking structopt v0.3.26
[INFO] [stderr]     Checking ccc v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: the item `log` is imported redundantly
[INFO] [stdout]  --> src/compile.rs:6:5
[INFO] [stdout]   |
[INFO] [stdout] 6 | use log;
[INFO] [stdout]   |     ^^^ the item `log` is already defined by prelude
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `log` is imported redundantly
[INFO] [stdout]  --> src/compile.rs:6:5
[INFO] [stdout]   |
[INFO] [stdout] 6 | use log;
[INFO] [stdout]   |     ^^^ the item `log` is already defined by prelude
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 15.50s
[INFO] running `Command { std: "docker" "inspect" "11fbf994d5508b8e6e08a525cc7e2dfe5496599db45a95958a7ed9b9a07837f7", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "11fbf994d5508b8e6e08a525cc7e2dfe5496599db45a95958a7ed9b9a07837f7", kill_on_drop: false }`
[INFO] [stdout] 11fbf994d5508b8e6e08a525cc7e2dfe5496599db45a95958a7ed9b9a07837f7