[INFO] fetching crate i2c-pca9685 0.1.8...
[INFO] checking i2c-pca9685-0.1.8 against master#385fa9d845dd326c6bbfd58c22244215e431948a for absurd-question-mark-desugar
[INFO] extracting crate i2c-pca9685 0.1.8 into /workspace/builds/worker-4-tc1/source
[INFO] validating manifest of crates.io crate i2c-pca9685 0.1.8 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 i2c-pca9685 0.1.8
[INFO] finished tweaking crates.io crate i2c-pca9685 0.1.8
[INFO] tweaked toml for crates.io crate i2c-pca9685 0.1.8 written to /workspace/builds/worker-4-tc1/source/Cargo.toml
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+385fa9d845dd326c6bbfd58c22244215e431948a" "generate-lockfile" "--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]      Locking 54 packages
[INFO] [stderr]       Adding bitflags v1.3.2 (latest: v2.5.0)
[INFO] [stderr]       Adding bytes v0.4.12 (latest: v1.6.0)
[INFO] [stderr]       Adding cargo_metadata v0.14.2 (latest: v0.18.1)
[INFO] [stderr]       Adding cfg-if v0.1.10 (latest: v1.0.0)
[INFO] [stderr]       Adding i2cdev v0.3.2 (latest: v0.6.0)
[INFO] [stderr]       Adding linux-raw-sys v0.4.13 (latest: v0.6.4)
[INFO] [stderr]       Adding nix v0.10.0 (latest: v0.28.0)
[INFO] [stderr]       Adding pulldown-cmark v0.9.6 (latest: v0.10.2)
[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]  Downloading crates ...
[INFO] [stderr]   Downloaded cargo_metadata v0.14.2
[INFO] [stderr]   Downloaded gcc v0.3.55
[INFO] [stderr]   Downloaded nix v0.10.0
[INFO] [stderr]   Downloaded bytecount v0.6.7
[INFO] [stderr]   Downloaded cargo-platform v0.1.8
[INFO] [stderr]   Downloaded pulldown-cmark v0.9.6
[INFO] [stderr]   Downloaded skeptic v0.13.7
[INFO] [stderr]   Downloaded i2cdev v0.3.2
[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] f06b9d51e1133ad1cd859eaade72cd53929f9901f736e4fc0f0220862da7a3ab
[INFO] running `Command { std: "docker" "start" "-a" "f06b9d51e1133ad1cd859eaade72cd53929f9901f736e4fc0f0220862da7a3ab", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "f06b9d51e1133ad1cd859eaade72cd53929f9901f736e4fc0f0220862da7a3ab", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "f06b9d51e1133ad1cd859eaade72cd53929f9901f736e4fc0f0220862da7a3ab", kill_on_drop: false }`
[INFO] [stdout] f06b9d51e1133ad1cd859eaade72cd53929f9901f736e4fc0f0220862da7a3ab
[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] e77b40fc35b9b6db8f8ad316701033e8e548a398f54668233768a8df44c03885
[INFO] running `Command { std: "docker" "start" "-a" "e77b40fc35b9b6db8f8ad316701033e8e548a398f54668233768a8df44c03885", kill_on_drop: false }`
[INFO] [stderr]    Compiling semver v1.0.22
[INFO] [stderr]    Compiling serde_json v1.0.115
[INFO] [stderr]    Compiling serde v1.0.197
[INFO] [stderr]    Compiling camino v1.1.6
[INFO] [stderr]    Compiling error-chain v0.12.4
[INFO] [stderr]    Compiling unicase v2.7.0
[INFO] [stderr]    Compiling rustix v0.38.32
[INFO] [stderr]    Compiling pulldown-cmark v0.9.6
[INFO] [stderr]    Compiling linux-raw-sys v0.4.13
[INFO] [stderr]    Compiling fastrand v2.0.2
[INFO] [stderr]    Compiling memchr v2.7.2
[INFO] [stderr]    Compiling walkdir v2.5.0
[INFO] [stderr]    Compiling glob v0.3.1
[INFO] [stderr]    Compiling bytecount v0.6.7
[INFO] [stderr]    Compiling nix v0.10.0
[INFO] [stderr]     Checking bytes v0.4.12
[INFO] [stderr]    Compiling tempfile v3.10.1
[INFO] [stderr]    Compiling cargo-platform v0.1.8
[INFO] [stderr]    Compiling cargo_metadata v0.14.2
[INFO] [stderr]    Compiling skeptic v0.13.7
[INFO] [stderr]    Compiling i2cdev v0.3.2
[INFO] [stderr]     Checking i2c-pca9685 v0.1.8 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 17.40s
[INFO] running `Command { std: "docker" "inspect" "e77b40fc35b9b6db8f8ad316701033e8e548a398f54668233768a8df44c03885", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "e77b40fc35b9b6db8f8ad316701033e8e548a398f54668233768a8df44c03885", kill_on_drop: false }`
[INFO] [stdout] e77b40fc35b9b6db8f8ad316701033e8e548a398f54668233768a8df44c03885
[INFO] checking i2c-pca9685-0.1.8 against try#645bb72776a6a56a1a8f52631a44bd082b2ba509 for absurd-question-mark-desugar
[INFO] extracting crate i2c-pca9685 0.1.8 into /workspace/builds/worker-4-tc2/source
[INFO] validating manifest of crates.io crate i2c-pca9685 0.1.8 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 i2c-pca9685 0.1.8
[INFO] finished tweaking crates.io crate i2c-pca9685 0.1.8
[INFO] tweaked toml for crates.io crate i2c-pca9685 0.1.8 written to /workspace/builds/worker-4-tc2/source/Cargo.toml
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+645bb72776a6a56a1a8f52631a44bd082b2ba509" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[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] 17e9d315154f9371f89e1dac2a4e3b3f3d460814373d9d13072478140197bd6c
[INFO] running `Command { std: "docker" "start" "-a" "17e9d315154f9371f89e1dac2a4e3b3f3d460814373d9d13072478140197bd6c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "17e9d315154f9371f89e1dac2a4e3b3f3d460814373d9d13072478140197bd6c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "17e9d315154f9371f89e1dac2a4e3b3f3d460814373d9d13072478140197bd6c", kill_on_drop: false }`
[INFO] [stdout] 17e9d315154f9371f89e1dac2a4e3b3f3d460814373d9d13072478140197bd6c
[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] 930e6d99c4ff1f40190accb4f96e56fc0f476520c4289eb2ef24f62948076752
[INFO] running `Command { std: "docker" "start" "-a" "930e6d99c4ff1f40190accb4f96e56fc0f476520c4289eb2ef24f62948076752", kill_on_drop: false }`
[INFO] [stderr]    Compiling serde_json v1.0.115
[INFO] [stderr]    Compiling semver v1.0.22
[INFO] [stderr]    Compiling serde v1.0.197
[INFO] [stderr]    Compiling error-chain v0.12.4
[INFO] [stderr]    Compiling rustix v0.38.32
[INFO] [stderr]    Compiling camino v1.1.6
[INFO] [stderr]    Compiling unicase v2.7.0
[INFO] [stderr]    Compiling linux-raw-sys v0.4.13
[INFO] [stderr]    Compiling pulldown-cmark v0.9.6
[INFO] [stderr]    Compiling fastrand v2.0.2
[INFO] [stderr]    Compiling memchr v2.7.2
[INFO] [stderr]    Compiling walkdir v2.5.0
[INFO] [stderr]    Compiling bytecount v0.6.7
[INFO] [stderr]    Compiling glob v0.3.1
[INFO] [stderr]    Compiling nix v0.10.0
[INFO] [stderr]     Checking bytes v0.4.12
[INFO] [stderr]    Compiling tempfile v3.10.1
[INFO] [stderr]    Compiling cargo-platform v0.1.8
[INFO] [stderr]    Compiling cargo_metadata v0.14.2
[INFO] [stderr]    Compiling skeptic v0.13.7
[INFO] [stderr]    Compiling i2cdev v0.3.2
[INFO] [stderr]     Checking i2c-pca9685 v0.1.8 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 13.00s
[INFO] running `Command { std: "docker" "inspect" "930e6d99c4ff1f40190accb4f96e56fc0f476520c4289eb2ef24f62948076752", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "930e6d99c4ff1f40190accb4f96e56fc0f476520c4289eb2ef24f62948076752", kill_on_drop: false }`
[INFO] [stdout] 930e6d99c4ff1f40190accb4f96e56fc0f476520c4289eb2ef24f62948076752