[INFO] fetching crate diffimg 2.1.0...
[INFO] checking diffimg-2.1.0 against master#385fa9d845dd326c6bbfd58c22244215e431948a for absurd-question-mark-desugar
[INFO] extracting crate diffimg 2.1.0 into /workspace/builds/worker-6-tc1/source
[INFO] validating manifest of crates.io crate diffimg 2.1.0 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 diffimg 2.1.0
[INFO] finished tweaking crates.io crate diffimg 2.1.0
[INFO] tweaked toml for crates.io crate diffimg 2.1.0 written to /workspace/builds/worker-6-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]     Updating crates.io index
[INFO] [stderr]      Locking 19 packages
[INFO] [stderr]       Adding base64 v0.12.3 (latest: v0.22.0)
[INFO] [stderr]       Adding bitflags v1.3.2 (latest: v2.5.0)
[INFO] [stderr]       Adding deflate v0.8.6 (latest: v1.0.0)
[INFO] [stderr]       Adding image v0.23.14 (latest: v0.25.1)
[INFO] [stderr]       Adding miniz_oxide v0.3.7 (latest: v0.7.2)
[INFO] [stderr]       Adding num-rational v0.3.2 (latest: v0.4.1)
[INFO] [stderr]       Adding png v0.16.8 (latest: v0.17.13)
[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]  Downloading crates ...
[INFO] [stderr]   Downloaded lcs-diff v0.1.1
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-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] ec24c20cd67926fb28ac78d4ef65122f05ddf360ea0a3944dd0978880534c911
[INFO] running `Command { std: "docker" "start" "-a" "ec24c20cd67926fb28ac78d4ef65122f05ddf360ea0a3944dd0978880534c911", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "ec24c20cd67926fb28ac78d4ef65122f05ddf360ea0a3944dd0978880534c911", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "ec24c20cd67926fb28ac78d4ef65122f05ddf360ea0a3944dd0978880534c911", kill_on_drop: false }`
[INFO] [stdout] ec24c20cd67926fb28ac78d4ef65122f05ddf360ea0a3944dd0978880534c911
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-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] ce39c79450c44b2503c51d8dc8b97db04365a0dbf47818aa290f4faa4b8632f0
[INFO] running `Command { std: "docker" "start" "-a" "ce39c79450c44b2503c51d8dc8b97db04365a0dbf47818aa290f4faa4b8632f0", kill_on_drop: false }`
[INFO] [stderr]     Checking adler32 v1.2.0
[INFO] [stderr]    Compiling num-rational v0.3.2
[INFO] [stderr]     Checking bytemuck v1.15.0
[INFO] [stderr]     Checking base64 v0.12.3
[INFO] [stderr]     Checking lcs-diff v0.1.1
[INFO] [stderr]     Checking num-integer v0.1.46
[INFO] [stderr]     Checking deflate v0.8.6
[INFO] [stderr]     Checking miniz_oxide v0.3.7
[INFO] [stderr]     Checking diffimg v2.1.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Checking num-iter v0.1.44
[INFO] [stderr]     Checking png v0.16.8
[INFO] [stderr]     Checking image v0.23.14
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 1.92s
[INFO] running `Command { std: "docker" "inspect" "ce39c79450c44b2503c51d8dc8b97db04365a0dbf47818aa290f4faa4b8632f0", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "ce39c79450c44b2503c51d8dc8b97db04365a0dbf47818aa290f4faa4b8632f0", kill_on_drop: false }`
[INFO] [stdout] ce39c79450c44b2503c51d8dc8b97db04365a0dbf47818aa290f4faa4b8632f0
[INFO] checking diffimg-2.1.0 against try#645bb72776a6a56a1a8f52631a44bd082b2ba509 for absurd-question-mark-desugar
[INFO] extracting crate diffimg 2.1.0 into /workspace/builds/worker-6-tc2/source
[INFO] validating manifest of crates.io crate diffimg 2.1.0 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 diffimg 2.1.0
[INFO] finished tweaking crates.io crate diffimg 2.1.0
[INFO] tweaked toml for crates.io crate diffimg 2.1.0 written to /workspace/builds/worker-6-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-6-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-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] 0095cf8f41783540fc7ecf6973b6daf28fef1aa4cac8f413de3f329695074ac3
[INFO] running `Command { std: "docker" "start" "-a" "0095cf8f41783540fc7ecf6973b6daf28fef1aa4cac8f413de3f329695074ac3", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "0095cf8f41783540fc7ecf6973b6daf28fef1aa4cac8f413de3f329695074ac3", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "0095cf8f41783540fc7ecf6973b6daf28fef1aa4cac8f413de3f329695074ac3", kill_on_drop: false }`
[INFO] [stdout] 0095cf8f41783540fc7ecf6973b6daf28fef1aa4cac8f413de3f329695074ac3
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-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] 9c1c8b52186686d4f312c1b40d5248152bb0c7b79274ef9880ff326298a58d91
[INFO] running `Command { std: "docker" "start" "-a" "9c1c8b52186686d4f312c1b40d5248152bb0c7b79274ef9880ff326298a58d91", kill_on_drop: false }`
[INFO] [stderr]     Checking adler32 v1.2.0
[INFO] [stderr]    Compiling num-rational v0.3.2
[INFO] [stderr]     Checking bytemuck v1.15.0
[INFO] [stderr]     Checking base64 v0.12.3
[INFO] [stderr]     Checking lcs-diff v0.1.1
[INFO] [stderr]     Checking num-integer v0.1.46
[INFO] [stderr]     Checking deflate v0.8.6
[INFO] [stderr]     Checking miniz_oxide v0.3.7
[INFO] [stderr]     Checking diffimg v2.1.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Checking num-iter v0.1.44
[INFO] [stderr]     Checking png v0.16.8
[INFO] [stderr]     Checking image v0.23.14
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 2.52s
[INFO] running `Command { std: "docker" "inspect" "9c1c8b52186686d4f312c1b40d5248152bb0c7b79274ef9880ff326298a58d91", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "9c1c8b52186686d4f312c1b40d5248152bb0c7b79274ef9880ff326298a58d91", kill_on_drop: false }`
[INFO] [stdout] 9c1c8b52186686d4f312c1b40d5248152bb0c7b79274ef9880ff326298a58d91