[INFO] fetching crate protoc-rust-no-elision 2.0.4...
[INFO] checking protoc-rust-no-elision-2.0.4 against master#385fa9d845dd326c6bbfd58c22244215e431948a for absurd-question-mark-desugar
[INFO] extracting crate protoc-rust-no-elision 2.0.4 into /workspace/builds/worker-6-tc1/source
[INFO] validating manifest of crates.io crate protoc-rust-no-elision 2.0.4 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 protoc-rust-no-elision 2.0.4
[INFO] finished tweaking crates.io crate protoc-rust-no-elision 2.0.4
[INFO] tweaked toml for crates.io crate protoc-rust-no-elision 2.0.4 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]     Blocking waiting for file lock on package cache
[INFO] [stderr]      Locking 16 packages
[INFO] [stderr]       Adding protobuf v2.0.4 (latest: v3.4.0)
[INFO] [stderr]       Adding protoc v2.0.4 (latest: v2.28.0)
[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] 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 protobuf-codegen-no-elision v2.0.4
[INFO] [stderr]   Downloaded protoc v2.0.4
[INFO] [stderr]   Downloaded protobuf v2.0.4
[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] 7f45ebedf12123a06db77b11e734d267c106079357c7ed53f9a21ebd908adb62
[INFO] running `Command { std: "docker" "start" "-a" "7f45ebedf12123a06db77b11e734d267c106079357c7ed53f9a21ebd908adb62", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "7f45ebedf12123a06db77b11e734d267c106079357c7ed53f9a21ebd908adb62", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "7f45ebedf12123a06db77b11e734d267c106079357c7ed53f9a21ebd908adb62", kill_on_drop: false }`
[INFO] [stdout] 7f45ebedf12123a06db77b11e734d267c106079357c7ed53f9a21ebd908adb62
[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] de6cabc72801a42edf5cde6316a07b9f1bc6ff2ae24c85ea261135bad9fca301
[INFO] running `Command { std: "docker" "start" "-a" "de6cabc72801a42edf5cde6316a07b9f1bc6ff2ae24c85ea261135bad9fca301", kill_on_drop: false }`
[INFO] [stderr]    Compiling protobuf v2.0.4
[INFO] [stderr]     Checking remove_dir_all v0.5.3
[INFO] [stderr]     Checking protoc v2.0.4
[INFO] [stderr]     Checking tempdir v0.3.7
[INFO] [stderr]     Checking protobuf-codegen-no-elision v2.0.4
[INFO] [stderr]     Checking protoc-rust-no-elision v2.0.4 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 3.29s
[INFO] running `Command { std: "docker" "inspect" "de6cabc72801a42edf5cde6316a07b9f1bc6ff2ae24c85ea261135bad9fca301", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "de6cabc72801a42edf5cde6316a07b9f1bc6ff2ae24c85ea261135bad9fca301", kill_on_drop: false }`
[INFO] [stdout] de6cabc72801a42edf5cde6316a07b9f1bc6ff2ae24c85ea261135bad9fca301
[INFO] checking protoc-rust-no-elision-2.0.4 against try#645bb72776a6a56a1a8f52631a44bd082b2ba509 for absurd-question-mark-desugar
[INFO] extracting crate protoc-rust-no-elision 2.0.4 into /workspace/builds/worker-6-tc2/source
[INFO] validating manifest of crates.io crate protoc-rust-no-elision 2.0.4 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 protoc-rust-no-elision 2.0.4
[INFO] finished tweaking crates.io crate protoc-rust-no-elision 2.0.4
[INFO] tweaked toml for crates.io crate protoc-rust-no-elision 2.0.4 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] 9bf33ac3bf95eb12dc88ec662125e3d266015f079b6762415543a05161a409c8
[INFO] running `Command { std: "docker" "start" "-a" "9bf33ac3bf95eb12dc88ec662125e3d266015f079b6762415543a05161a409c8", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "9bf33ac3bf95eb12dc88ec662125e3d266015f079b6762415543a05161a409c8", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "9bf33ac3bf95eb12dc88ec662125e3d266015f079b6762415543a05161a409c8", kill_on_drop: false }`
[INFO] [stdout] 9bf33ac3bf95eb12dc88ec662125e3d266015f079b6762415543a05161a409c8
[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] 8d1b21c51d3178872166c44f3f45f7596e7cf8a672308b2c97f9b4fd7e5174dc
[INFO] running `Command { std: "docker" "start" "-a" "8d1b21c51d3178872166c44f3f45f7596e7cf8a672308b2c97f9b4fd7e5174dc", kill_on_drop: false }`
[INFO] [stderr]    Compiling protobuf v2.0.4
[INFO] [stderr]     Checking remove_dir_all v0.5.3
[INFO] [stderr]     Checking protoc v2.0.4
[INFO] [stderr]     Checking tempdir v0.3.7
[INFO] [stderr]     Checking protobuf-codegen-no-elision v2.0.4
[INFO] [stderr]     Checking protoc-rust-no-elision v2.0.4 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 3.13s
[INFO] running `Command { std: "docker" "inspect" "8d1b21c51d3178872166c44f3f45f7596e7cf8a672308b2c97f9b4fd7e5174dc", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "8d1b21c51d3178872166c44f3f45f7596e7cf8a672308b2c97f9b4fd7e5174dc", kill_on_drop: false }`
[INFO] [stdout] 8d1b21c51d3178872166c44f3f45f7596e7cf8a672308b2c97f9b4fd7e5174dc