[INFO] fetching crate combine-language 4.0.0...
[INFO] checking combine-language-4.0.0 against master#385fa9d845dd326c6bbfd58c22244215e431948a for absurd-question-mark-desugar
[INFO] extracting crate combine-language 4.0.0 into /workspace/builds/worker-1-tc1/source
[INFO] validating manifest of crates.io crate combine-language 4.0.0 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 combine-language 4.0.0
[INFO] finished tweaking crates.io crate combine-language 4.0.0
[INFO] tweaked toml for crates.io crate combine-language 4.0.0 written to /workspace/builds/worker-1-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]      Locking 20 packages
[INFO] [stderr]       Adding bitflags v0.5.0 (latest: v2.5.0)
[INFO] [stderr]       Adding pulldown-cmark v0.0.8 (latest: v0.10.2)
[INFO] [stderr]       Adding rand v0.4.6 (latest: v0.8.5)
[INFO] [stderr]       Adding rand_core v0.3.1 (latest: v0.6.4)
[INFO] [stderr]       Adding rand_core v0.4.2 (latest: v0.6.4)
[INFO] [stderr]       Adding rdrand v0.4.0 (latest: v0.8.3)
[INFO] [stderr]       Adding remove_dir_all v0.5.3 (latest: v0.8.2)
[INFO] [stderr]       Adding skeptic v0.9.0 (latest: v0.13.7)
[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 skeptic v0.9.0
[INFO] [stderr]   Downloaded bitflags v0.5.0
[INFO] [stderr]   Downloaded pulldown-cmark v0.0.8
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-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] 9c4246ebcca3e4be1959055794a1aba26663301473b82f2bf2671b3709b91603
[INFO] running `Command { std: "docker" "start" "-a" "9c4246ebcca3e4be1959055794a1aba26663301473b82f2bf2671b3709b91603", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "9c4246ebcca3e4be1959055794a1aba26663301473b82f2bf2671b3709b91603", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "9c4246ebcca3e4be1959055794a1aba26663301473b82f2bf2671b3709b91603", kill_on_drop: false }`
[INFO] [stdout] 9c4246ebcca3e4be1959055794a1aba26663301473b82f2bf2671b3709b91603
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-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] a6d6faa11fdea80293732bf33cd1fa92791886fb1396fa9ccae987b34e95e609
[INFO] running `Command { std: "docker" "start" "-a" "a6d6faa11fdea80293732bf33cd1fa92791886fb1396fa9ccae987b34e95e609", kill_on_drop: false }`
[INFO] [stderr]    Compiling unicode-width v0.1.11
[INFO] [stderr]    Compiling bitflags v0.5.0
[INFO] [stderr]    Compiling remove_dir_all v0.5.3
[INFO] [stderr]    Compiling libc v0.2.153
[INFO] [stderr]     Checking getopts v0.2.21
[INFO] [stderr]     Checking combine v4.6.6
[INFO] [stderr]     Checking rand v0.4.6
[INFO] [stderr]     Checking pulldown-cmark v0.0.8
[INFO] [stderr]     Checking tempdir v0.3.7
[INFO] [stderr]     Checking skeptic v0.9.0
[INFO] [stderr]    Compiling combine-language v4.0.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 7.17s
[INFO] running `Command { std: "docker" "inspect" "a6d6faa11fdea80293732bf33cd1fa92791886fb1396fa9ccae987b34e95e609", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "a6d6faa11fdea80293732bf33cd1fa92791886fb1396fa9ccae987b34e95e609", kill_on_drop: false }`
[INFO] [stdout] a6d6faa11fdea80293732bf33cd1fa92791886fb1396fa9ccae987b34e95e609
[INFO] checking combine-language-4.0.0 against try#645bb72776a6a56a1a8f52631a44bd082b2ba509 for absurd-question-mark-desugar
[INFO] extracting crate combine-language 4.0.0 into /workspace/builds/worker-1-tc2/source
[INFO] validating manifest of crates.io crate combine-language 4.0.0 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 combine-language 4.0.0
[INFO] finished tweaking crates.io crate combine-language 4.0.0
[INFO] tweaked toml for crates.io crate combine-language 4.0.0 written to /workspace/builds/worker-1-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] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-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] b4c9d3022410a01fb8bb0226733e8021e240904fbca2772c72f8f55a990d1f1d
[INFO] running `Command { std: "docker" "start" "-a" "b4c9d3022410a01fb8bb0226733e8021e240904fbca2772c72f8f55a990d1f1d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "b4c9d3022410a01fb8bb0226733e8021e240904fbca2772c72f8f55a990d1f1d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "b4c9d3022410a01fb8bb0226733e8021e240904fbca2772c72f8f55a990d1f1d", kill_on_drop: false }`
[INFO] [stdout] b4c9d3022410a01fb8bb0226733e8021e240904fbca2772c72f8f55a990d1f1d
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-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] 50a418ce520e79fee5706a7adb728d2567514a163fcb23c5517cac3a17f9dcc1
[INFO] running `Command { std: "docker" "start" "-a" "50a418ce520e79fee5706a7adb728d2567514a163fcb23c5517cac3a17f9dcc1", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.153
[INFO] [stderr]    Compiling unicode-width v0.1.11
[INFO] [stderr]    Compiling bitflags v0.5.0
[INFO] [stderr]    Compiling remove_dir_all v0.5.3
[INFO] [stderr]     Checking rand v0.4.6
[INFO] [stderr]     Checking getopts v0.2.21
[INFO] [stderr]     Checking combine v4.6.6
[INFO] [stderr]     Checking pulldown-cmark v0.0.8
[INFO] [stderr]     Checking tempdir v0.3.7
[INFO] [stderr]     Checking skeptic v0.9.0
[INFO] [stderr]    Compiling combine-language v4.0.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 7.29s
[INFO] running `Command { std: "docker" "inspect" "50a418ce520e79fee5706a7adb728d2567514a163fcb23c5517cac3a17f9dcc1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "50a418ce520e79fee5706a7adb728d2567514a163fcb23c5517cac3a17f9dcc1", kill_on_drop: false }`
[INFO] [stdout] 50a418ce520e79fee5706a7adb728d2567514a163fcb23c5517cac3a17f9dcc1