[INFO] fetching crate unsegen_signals 0.3.0...
[INFO] checking unsegen_signals-0.3.0 against master#385fa9d845dd326c6bbfd58c22244215e431948a for absurd-question-mark-desugar
[INFO] extracting crate unsegen_signals 0.3.0 into /workspace/builds/worker-0-tc1/source
[INFO] validating manifest of crates.io crate unsegen_signals 0.3.0 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 unsegen_signals 0.3.0
[INFO] finished tweaking crates.io crate unsegen_signals 0.3.0
[INFO] tweaked toml for crates.io crate unsegen_signals 0.3.0 written to /workspace/builds/worker-0-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 33 packages
[INFO] [stderr]       Adding bitflags v1.3.2 (latest: v2.5.0)
[INFO] [stderr]       Adding cfg-if v0.1.10 (latest: v1.0.0)
[INFO] [stderr]       Adding derive_more v0.14.1 (latest: v0.99.17)
[INFO] [stderr]       Adding itertools v0.5.10 (latest: v0.12.1)
[INFO] [stderr]       Adding matrixmultiply v0.1.15 (latest: v0.3.8)
[INFO] [stderr]       Adding ndarray v0.8.4 (latest: v0.15.6)
[INFO] [stderr]       Adding nix v0.17.0 (latest: v0.28.0)
[INFO] [stderr]       Adding num-complex v0.1.43 (latest: v0.4.5)
[INFO] [stderr]       Adding num-traits v0.1.43 (latest: v0.2.18)
[INFO] [stderr]       Adding numtoa v0.1.0 (latest: v0.2.4)
[INFO] [stderr]       Adding proc-macro2 v0.4.30 (latest: v1.0.79)
[INFO] [stderr]       Adding quote v0.6.13 (latest: v1.0.35)
[INFO] [stderr]       Adding rawpointer v0.1.0 (latest: v0.2.1)
[INFO] [stderr]       Adding redox_syscall v0.2.16 (latest: v0.5.1)
[INFO] [stderr]       Adding rustc_version v0.2.3 (latest: v0.4.0)
[INFO] [stderr]       Adding semver v0.9.0 (latest: v1.0.22)
[INFO] [stderr]       Adding semver-parser v0.7.0 (latest: v0.10.2)
[INFO] [stderr]       Adding smallvec v0.3.4 (latest: v1.13.2)
[INFO] [stderr]       Adding syn v0.15.44 (latest: v2.0.58)
[INFO] [stderr]       Adding termion v1.5.6 (latest: v3.0.0)
[INFO] [stderr]       Adding unicode-xid v0.1.0 (latest: v0.2.4)
[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 ndarray v0.8.4
[INFO] [stderr]   Downloaded itertools v0.5.10
[INFO] [stderr]   Downloaded derive_more v0.14.1
[INFO] [stderr]   Downloaded raw_tty v0.1.0
[INFO] [stderr]   Downloaded nix v0.17.0
[INFO] [stderr]   Downloaded unsegen v0.3.0
[INFO] [stderr]   Downloaded smallvec v0.3.4
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-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] f88fcbe4e497999b34c1f94e907e99bb33e109b09f122b29c3658376c521a9e6
[INFO] running `Command { std: "docker" "start" "-a" "f88fcbe4e497999b34c1f94e907e99bb33e109b09f122b29c3658376c521a9e6", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "f88fcbe4e497999b34c1f94e907e99bb33e109b09f122b29c3658376c521a9e6", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "f88fcbe4e497999b34c1f94e907e99bb33e109b09f122b29c3658376c521a9e6", kill_on_drop: false }`
[INFO] [stdout] f88fcbe4e497999b34c1f94e907e99bb33e109b09f122b29c3658376c521a9e6
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-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] d2acab15e2e6119372ae37f7f45cd8c6d654af200844451051f1aabf6a0113cc
[INFO] running `Command { std: "docker" "start" "-a" "d2acab15e2e6119372ae37f7f45cd8c6d654af200844451051f1aabf6a0113cc", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v0.4.30
[INFO] [stderr]    Compiling unicode-xid v0.1.0
[INFO] [stderr]    Compiling libc v0.2.153
[INFO] [stderr]    Compiling syn v0.15.44
[INFO] [stderr]    Compiling matrixmultiply v0.1.15
[INFO] [stderr]    Compiling nix v0.17.0
[INFO] [stderr]    Compiling ndarray v0.8.4
[INFO] [stderr]     Checking rawpointer v0.1.0
[INFO] [stderr]     Checking itertools v0.5.10
[INFO] [stderr]     Checking num-traits v0.1.43
[INFO] [stderr]     Checking num-complex v0.1.43
[INFO] [stderr]     Checking cfg-if v0.1.10
[INFO] [stderr]     Checking void v1.0.2
[INFO] [stderr]     Checking numtoa v0.1.0
[INFO] [stderr]     Checking smallvec v0.3.4
[INFO] [stderr]     Checking unicode-segmentation v1.11.0
[INFO] [stderr]    Compiling quote v0.6.13
[INFO] [stderr]     Checking termion v1.5.6
[INFO] [stderr]    Compiling derive_more v0.14.1
[INFO] [stderr]     Checking raw_tty v0.1.0
[INFO] [stderr]     Checking unsegen v0.3.0
[INFO] [stderr]     Checking unsegen_signals v0.3.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 13.04s
[INFO] running `Command { std: "docker" "inspect" "d2acab15e2e6119372ae37f7f45cd8c6d654af200844451051f1aabf6a0113cc", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "d2acab15e2e6119372ae37f7f45cd8c6d654af200844451051f1aabf6a0113cc", kill_on_drop: false }`
[INFO] [stdout] d2acab15e2e6119372ae37f7f45cd8c6d654af200844451051f1aabf6a0113cc
[INFO] checking unsegen_signals-0.3.0 against try#645bb72776a6a56a1a8f52631a44bd082b2ba509 for absurd-question-mark-desugar
[INFO] extracting crate unsegen_signals 0.3.0 into /workspace/builds/worker-0-tc2/source
[INFO] validating manifest of crates.io crate unsegen_signals 0.3.0 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 unsegen_signals 0.3.0
[INFO] finished tweaking crates.io crate unsegen_signals 0.3.0
[INFO] tweaked toml for crates.io crate unsegen_signals 0.3.0 written to /workspace/builds/worker-0-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-0-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-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] 89d9ab770d72c812bf7871e29c98b043a2721df28af44b0009a6eb4528cda2f1
[INFO] running `Command { std: "docker" "start" "-a" "89d9ab770d72c812bf7871e29c98b043a2721df28af44b0009a6eb4528cda2f1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "89d9ab770d72c812bf7871e29c98b043a2721df28af44b0009a6eb4528cda2f1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "89d9ab770d72c812bf7871e29c98b043a2721df28af44b0009a6eb4528cda2f1", kill_on_drop: false }`
[INFO] [stdout] 89d9ab770d72c812bf7871e29c98b043a2721df28af44b0009a6eb4528cda2f1
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-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] 8132a02ba00d9aa1ac52048c5c81fdbf1560999079f3a6fc626054341d2588b8
[INFO] running `Command { std: "docker" "start" "-a" "8132a02ba00d9aa1ac52048c5c81fdbf1560999079f3a6fc626054341d2588b8", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v0.4.30
[INFO] [stderr]    Compiling unicode-xid v0.1.0
[INFO] [stderr]    Compiling libc v0.2.153
[INFO] [stderr]    Compiling syn v0.15.44
[INFO] [stderr]    Compiling matrixmultiply v0.1.15
[INFO] [stderr]    Compiling ndarray v0.8.4
[INFO] [stderr]     Checking rawpointer v0.1.0
[INFO] [stderr]    Compiling nix v0.17.0
[INFO] [stderr]     Checking itertools v0.5.10
[INFO] [stderr]     Checking num-complex v0.1.43
[INFO] [stderr]     Checking num-traits v0.1.43
[INFO] [stderr]     Checking cfg-if v0.1.10
[INFO] [stderr]     Checking numtoa v0.1.0
[INFO] [stderr]     Checking void v1.0.2
[INFO] [stderr]     Checking smallvec v0.3.4
[INFO] [stderr]     Checking unicode-segmentation v1.11.0
[INFO] [stderr]    Compiling quote v0.6.13
[INFO] [stderr]     Checking termion v1.5.6
[INFO] [stderr]    Compiling derive_more v0.14.1
[INFO] [stderr]     Checking raw_tty v0.1.0
[INFO] [stderr]     Checking unsegen v0.3.0
[INFO] [stderr]     Checking unsegen_signals v0.3.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 13.30s
[INFO] running `Command { std: "docker" "inspect" "8132a02ba00d9aa1ac52048c5c81fdbf1560999079f3a6fc626054341d2588b8", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "8132a02ba00d9aa1ac52048c5c81fdbf1560999079f3a6fc626054341d2588b8", kill_on_drop: false }`
[INFO] [stdout] 8132a02ba00d9aa1ac52048c5c81fdbf1560999079f3a6fc626054341d2588b8