[INFO] fetching crate aki-mcycle 0.1.28...
[INFO] checking aki-mcycle-0.1.28 against master#385fa9d845dd326c6bbfd58c22244215e431948a for absurd-question-mark-desugar
[INFO] extracting crate aki-mcycle 0.1.28 into /workspace/builds/worker-5-tc1/source
[INFO] validating manifest of crates.io crate aki-mcycle 0.1.28 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] removed /workspace/builds/worker-5-tc1/source/.cargo/config
[INFO] started tweaking crates.io crate aki-mcycle 0.1.28
[INFO] finished tweaking crates.io crate aki-mcycle 0.1.28
[INFO] tweaked toml for crates.io crate aki-mcycle 0.1.28 written to /workspace/builds/worker-5-tc1/source/Cargo.toml
[INFO] crate crates.io crate aki-mcycle 0.1.28 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]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-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] 7707756deba3196a059ac90ad175912b533fe1a4091b785aa3ae14de5010ff45
[INFO] running `Command { std: "docker" "start" "-a" "7707756deba3196a059ac90ad175912b533fe1a4091b785aa3ae14de5010ff45", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "7707756deba3196a059ac90ad175912b533fe1a4091b785aa3ae14de5010ff45", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "7707756deba3196a059ac90ad175912b533fe1a4091b785aa3ae14de5010ff45", kill_on_drop: false }`
[INFO] [stdout] 7707756deba3196a059ac90ad175912b533fe1a4091b785aa3ae14de5010ff45
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-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] 97714750f286f08f028c50796f30f4b6df45f1e5c1f440da148b4de157b46873
[INFO] running `Command { std: "docker" "start" "-a" "97714750f286f08f028c50796f30f4b6df45f1e5c1f440da148b4de157b46873", kill_on_drop: false }`
[INFO] [stderr]    Compiling semver v1.0.16
[INFO] [stderr]    Compiling memchr v2.5.0
[INFO] [stderr]    Compiling libc v0.2.139
[INFO] [stderr]     Checking cpufeatures v0.2.5
[INFO] [stderr]    Compiling anyhow v1.0.68
[INFO] [stderr]    Compiling rust-version-info-file v0.1.7
[INFO] [stderr]     Checking regex-syntax v0.6.28
[INFO] [stderr]     Checking flood-tide v0.2.8
[INFO] [stderr]    Compiling indoc v1.0.8
[INFO] [stderr]     Checking exec-target v0.2.7
[INFO] [stderr]    Compiling rustc_version v0.4.0
[INFO] [stderr]    Compiling memx v0.1.24
[INFO] [stderr]    Compiling runnel v0.3.15
[INFO] [stderr]    Compiling aki-mcycle v0.1.28 (/opt/rustwide/workdir)
[INFO] [stderr]     Checking aho-corasick v0.7.20
[INFO] [stderr]     Checking memx-cdy v0.1.10
[INFO] [stderr]     Checking regex v1.7.1
[INFO] [stdout] warning: unused import: `self::opt_uc_x_param::OptUcXParamParseError`
[INFO] [stdout]  --> src/util/mod.rs:5:9
[INFO] [stdout]   |
[INFO] [stdout] 5 | pub use self::opt_uc_x_param::OptUcXParamParseError;
[INFO] [stdout]   |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `self::opt_uc_x_param::OptUcXParamParseError`
[INFO] [stdout]  --> src/util/mod.rs:5:9
[INFO] [stdout]   |
[INFO] [stdout] 5 | pub use self::opt_uc_x_param::OptUcXParamParseError;
[INFO] [stdout]   |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[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 6.44s
[INFO] running `Command { std: "docker" "inspect" "97714750f286f08f028c50796f30f4b6df45f1e5c1f440da148b4de157b46873", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "97714750f286f08f028c50796f30f4b6df45f1e5c1f440da148b4de157b46873", kill_on_drop: false }`
[INFO] [stdout] 97714750f286f08f028c50796f30f4b6df45f1e5c1f440da148b4de157b46873
[INFO] checking aki-mcycle-0.1.28 against try#645bb72776a6a56a1a8f52631a44bd082b2ba509 for absurd-question-mark-desugar
[INFO] extracting crate aki-mcycle 0.1.28 into /workspace/builds/worker-5-tc2/source
[INFO] validating manifest of crates.io crate aki-mcycle 0.1.28 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] removed /workspace/builds/worker-5-tc2/source/.cargo/config
[INFO] started tweaking crates.io crate aki-mcycle 0.1.28
[INFO] finished tweaking crates.io crate aki-mcycle 0.1.28
[INFO] tweaked toml for crates.io crate aki-mcycle 0.1.28 written to /workspace/builds/worker-5-tc2/source/Cargo.toml
[INFO] crate crates.io crate aki-mcycle 0.1.28 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-5-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-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] 7761356c4a80daca3a15384f2908fdb3ed29226ed2cc783beecbd52692fdff52
[INFO] running `Command { std: "docker" "start" "-a" "7761356c4a80daca3a15384f2908fdb3ed29226ed2cc783beecbd52692fdff52", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "7761356c4a80daca3a15384f2908fdb3ed29226ed2cc783beecbd52692fdff52", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "7761356c4a80daca3a15384f2908fdb3ed29226ed2cc783beecbd52692fdff52", kill_on_drop: false }`
[INFO] [stdout] 7761356c4a80daca3a15384f2908fdb3ed29226ed2cc783beecbd52692fdff52
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-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] 0c40801e0f7257ff3e9b47b869874f555df21acbbcf261a3e23841bcb33f525a
[INFO] running `Command { std: "docker" "start" "-a" "0c40801e0f7257ff3e9b47b869874f555df21acbbcf261a3e23841bcb33f525a", kill_on_drop: false }`
[INFO] [stderr]    Compiling semver v1.0.16
[INFO] [stderr]    Compiling memchr v2.5.0
[INFO] [stderr]    Compiling libc v0.2.139
[INFO] [stderr]    Compiling anyhow v1.0.68
[INFO] [stderr]     Checking cpufeatures v0.2.5
[INFO] [stderr]    Compiling rust-version-info-file v0.1.7
[INFO] [stderr]     Checking regex-syntax v0.6.28
[INFO] [stderr]     Checking flood-tide v0.2.8
[INFO] [stderr]    Compiling indoc v1.0.8
[INFO] [stderr]     Checking exec-target v0.2.7
[INFO] [stderr]    Compiling rustc_version v0.4.0
[INFO] [stderr]     Checking aho-corasick v0.7.20
[INFO] [stderr]    Compiling memx v0.1.24
[INFO] [stderr]    Compiling runnel v0.3.15
[INFO] [stderr]    Compiling aki-mcycle v0.1.28 (/opt/rustwide/workdir)
[INFO] [stderr]     Checking memx-cdy v0.1.10
[INFO] [stderr]     Checking regex v1.7.1
[INFO] [stdout] warning: unused import: `self::opt_uc_x_param::OptUcXParamParseError`
[INFO] [stdout]  --> src/util/mod.rs:5:9
[INFO] [stdout]   |
[INFO] [stdout] 5 | pub use self::opt_uc_x_param::OptUcXParamParseError;
[INFO] [stdout]   |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `self::opt_uc_x_param::OptUcXParamParseError`
[INFO] [stdout]  --> src/util/mod.rs:5:9
[INFO] [stdout]   |
[INFO] [stdout] 5 | pub use self::opt_uc_x_param::OptUcXParamParseError;
[INFO] [stdout]   |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[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 6.80s
[INFO] running `Command { std: "docker" "inspect" "0c40801e0f7257ff3e9b47b869874f555df21acbbcf261a3e23841bcb33f525a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "0c40801e0f7257ff3e9b47b869874f555df21acbbcf261a3e23841bcb33f525a", kill_on_drop: false }`
[INFO] [stdout] 0c40801e0f7257ff3e9b47b869874f555df21acbbcf261a3e23841bcb33f525a