[INFO] fetching crate urdig 1.0.0...
[INFO] checking urdig-1.0.0 against master#385fa9d845dd326c6bbfd58c22244215e431948a for absurd-question-mark-desugar
[INFO] extracting crate urdig 1.0.0 into /workspace/builds/worker-4-tc1/source
[INFO] validating manifest of crates.io crate urdig 1.0.0 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 urdig 1.0.0
[INFO] finished tweaking crates.io crate urdig 1.0.0
[INFO] tweaked toml for crates.io crate urdig 1.0.0 written to /workspace/builds/worker-4-tc1/source/Cargo.toml
[INFO] crate crates.io crate urdig 1.0.0 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 udev v0.5.0
[INFO] [stderr]   Downloaded phollaits v0.2.1
[INFO] [stderr]   Downloaded wasm-bindgen-shared v0.2.69
[INFO] [stderr]   Downloaded wasm-bindgen-macro-support v0.2.69
[INFO] [stderr]   Downloaded wasm-bindgen-macro v0.2.69
[INFO] [stderr]   Downloaded data-encoding v2.3.1
[INFO] [stderr]   Downloaded js-sys v0.3.46
[INFO] [stderr]   Downloaded wasm-bindgen v0.2.69
[INFO] [stderr]   Downloaded wasm-bindgen-backend v0.2.69
[INFO] [stderr]   Downloaded syn v1.0.56
[INFO] [stderr]   Downloaded web-sys v0.3.46
[INFO] [stderr]   Downloaded ring v0.16.19
[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] 863d0cc7d3c6feaa3188f1aad902458d7bc7949d6760748f92c20cc4f46ddad9
[INFO] running `Command { std: "docker" "start" "-a" "863d0cc7d3c6feaa3188f1aad902458d7bc7949d6760748f92c20cc4f46ddad9", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "863d0cc7d3c6feaa3188f1aad902458d7bc7949d6760748f92c20cc4f46ddad9", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "863d0cc7d3c6feaa3188f1aad902458d7bc7949d6760748f92c20cc4f46ddad9", kill_on_drop: false }`
[INFO] [stdout] 863d0cc7d3c6feaa3188f1aad902458d7bc7949d6760748f92c20cc4f46ddad9
[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] 6fab78a8860362128a44ef6511fede897a6e9292a2a79df3f1f8ecd14fde3011
[INFO] running `Command { std: "docker" "start" "-a" "6fab78a8860362128a44ef6511fede897a6e9292a2a79df3f1f8ecd14fde3011", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.81
[INFO] [stderr]    Compiling cc v1.0.66
[INFO] [stderr]    Compiling libudev-sys v0.1.4
[INFO] [stderr]     Checking spin v0.5.2
[INFO] [stderr]     Checking untrusted v0.7.1
[INFO] [stderr]     Checking once_cell v1.5.2
[INFO] [stderr]     Checking md5 v0.7.0
[INFO] [stderr]     Checking ansi_term v0.11.0
[INFO] [stderr]     Checking data-encoding v2.3.1
[INFO] [stderr]    Compiling ring v0.16.19
[INFO] [stderr]     Checking xattr v0.2.2
[INFO] [stderr]     Checking filetime v0.2.13
[INFO] [stderr]     Checking atty v0.2.14
[INFO] [stderr]     Checking udev v0.5.0
[INFO] [stderr]     Checking clap v2.33.3
[INFO] [stderr]     Checking tar v0.4.30
[INFO] [stderr]     Checking phollaits v0.2.1
[INFO] [stderr]     Checking urdig v1.0.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: the item `urdig` is imported redundantly
[INFO] [stdout]  --> src/bin/urdig.rs:7:5
[INFO] [stdout]   |
[INFO] [stdout] 7 | use urdig;
[INFO] [stdout]   |     ^^^^^ the item `urdig` 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 `urdig` is imported redundantly
[INFO] [stdout]  --> src/bin/urdig.rs:7:5
[INFO] [stdout]   |
[INFO] [stdout] 7 | use urdig;
[INFO] [stdout]   |     ^^^^^ the item `urdig` 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 7.93s
[INFO] running `Command { std: "docker" "inspect" "6fab78a8860362128a44ef6511fede897a6e9292a2a79df3f1f8ecd14fde3011", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "6fab78a8860362128a44ef6511fede897a6e9292a2a79df3f1f8ecd14fde3011", kill_on_drop: false }`
[INFO] [stdout] 6fab78a8860362128a44ef6511fede897a6e9292a2a79df3f1f8ecd14fde3011
[INFO] checking urdig-1.0.0 against try#645bb72776a6a56a1a8f52631a44bd082b2ba509 for absurd-question-mark-desugar
[INFO] extracting crate urdig 1.0.0 into /workspace/builds/worker-4-tc2/source
[INFO] validating manifest of crates.io crate urdig 1.0.0 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 urdig 1.0.0
[INFO] finished tweaking crates.io crate urdig 1.0.0
[INFO] tweaked toml for crates.io crate urdig 1.0.0 written to /workspace/builds/worker-4-tc2/source/Cargo.toml
[INFO] crate crates.io crate urdig 1.0.0 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-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] bc6f2654cb49709fa91c2b1b029ee134d8d70f8beb72bf8acb7f923a9e71fb89
[INFO] running `Command { std: "docker" "start" "-a" "bc6f2654cb49709fa91c2b1b029ee134d8d70f8beb72bf8acb7f923a9e71fb89", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "bc6f2654cb49709fa91c2b1b029ee134d8d70f8beb72bf8acb7f923a9e71fb89", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "bc6f2654cb49709fa91c2b1b029ee134d8d70f8beb72bf8acb7f923a9e71fb89", kill_on_drop: false }`
[INFO] [stdout] bc6f2654cb49709fa91c2b1b029ee134d8d70f8beb72bf8acb7f923a9e71fb89
[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] f8a51cd8554ed3c1aaa9af556b2cb1fa7c8018d79a4be90e298272b4b23aa811
[INFO] running `Command { std: "docker" "start" "-a" "f8a51cd8554ed3c1aaa9af556b2cb1fa7c8018d79a4be90e298272b4b23aa811", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.81
[INFO] [stderr]    Compiling cc v1.0.66
[INFO] [stderr]    Compiling libudev-sys v0.1.4
[INFO] [stderr]     Checking spin v0.5.2
[INFO] [stderr]     Checking untrusted v0.7.1
[INFO] [stderr]     Checking once_cell v1.5.2
[INFO] [stderr]     Checking ansi_term v0.11.0
[INFO] [stderr]     Checking md5 v0.7.0
[INFO] [stderr]     Checking data-encoding v2.3.1
[INFO] [stderr]    Compiling ring v0.16.19
[INFO] [stderr]     Checking xattr v0.2.2
[INFO] [stderr]     Checking filetime v0.2.13
[INFO] [stderr]     Checking atty v0.2.14
[INFO] [stderr]     Checking clap v2.33.3
[INFO] [stderr]     Checking udev v0.5.0
[INFO] [stderr]     Checking tar v0.4.30
[INFO] [stderr]     Checking phollaits v0.2.1
[INFO] [stderr]     Checking urdig v1.0.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: the item `urdig` is imported redundantly
[INFO] [stdout]  --> src/bin/urdig.rs:7:5
[INFO] [stdout]   |
[INFO] [stdout] 7 | use urdig;
[INFO] [stdout]   |     ^^^^^ the item `urdig` 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 `urdig` is imported redundantly
[INFO] [stdout]  --> src/bin/urdig.rs:7:5
[INFO] [stdout]   |
[INFO] [stdout] 7 | use urdig;
[INFO] [stdout]   |     ^^^^^ the item `urdig` 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 9.31s
[INFO] running `Command { std: "docker" "inspect" "f8a51cd8554ed3c1aaa9af556b2cb1fa7c8018d79a4be90e298272b4b23aa811", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "f8a51cd8554ed3c1aaa9af556b2cb1fa7c8018d79a4be90e298272b4b23aa811", kill_on_drop: false }`
[INFO] [stdout] f8a51cd8554ed3c1aaa9af556b2cb1fa7c8018d79a4be90e298272b4b23aa811