[INFO] fetching crate flowruntime 0.8.8...
[INFO] checking flowruntime-0.8.8 against master#385fa9d845dd326c6bbfd58c22244215e431948a for absurd-question-mark-desugar
[INFO] extracting crate flowruntime 0.8.8 into /workspace/builds/worker-0-tc1/source
[INFO] validating manifest of crates.io crate flowruntime 0.8.8 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 flowruntime 0.8.8
[INFO] finished tweaking crates.io crate flowruntime 0.8.8
[INFO] tweaked toml for crates.io crate flowruntime 0.8.8 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]     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 51 packages
[INFO] [stderr]       Adding flow_impl v0.8.5 (latest: v0.21.0)
[INFO] [stderr]       Adding flowrlib v0.8.8 (latest: v0.95.0)
[INFO] [stderr]       Adding idna v0.2.3 (latest: v0.5.0)
[INFO] [stderr]       Adding memory_units v0.3.0 (latest: v0.4.0)
[INFO] [stderr]       Adding multimap v0.5.0 (latest: v0.10.0)
[INFO] [stderr]       Adding object v0.32.2 (latest: v0.34.0)
[INFO] [stderr]       Adding parity-wasm v0.31.3 (latest: v0.45.0)
[INFO] [stderr]       Adding simplog v1.2.2 (latest: v1.6.0)
[INFO] [stderr]       Adding url v2.1.1 (latest: v2.5.0)
[INFO] [stderr]       Adding wasmi v0.4.5 (latest: v0.31.2)
[INFO] [stderr]       Adding wasmi-validation v0.1.0 (latest: v0.5.0)
[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 simplog v1.2.2
[INFO] [stderr]   Downloaded wasmi v0.4.5
[INFO] [stderr]   Downloaded flowrlib v0.8.8
[INFO] [stderr]   Downloaded flow_impl v0.8.5
[INFO] [stderr]   Downloaded parity-wasm v0.31.3
[INFO] [stderr]   Downloaded url v2.1.1
[INFO] [stderr]   Downloaded multimap v0.5.0
[INFO] [stderr]   Downloaded memory_units v0.3.0
[INFO] [stderr]   Downloaded wasmi-validation v0.1.0
[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] 6cdb8f96df75fe5b072d99dac21bb532210331baad723d9c8c2a28f33f8f72a9
[INFO] running `Command { std: "docker" "start" "-a" "6cdb8f96df75fe5b072d99dac21bb532210331baad723d9c8c2a28f33f8f72a9", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "6cdb8f96df75fe5b072d99dac21bb532210331baad723d9c8c2a28f33f8f72a9", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "6cdb8f96df75fe5b072d99dac21bb532210331baad723d9c8c2a28f33f8f72a9", kill_on_drop: false }`
[INFO] [stdout] 6cdb8f96df75fe5b072d99dac21bb532210331baad723d9c8c2a28f33f8f72a9
[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] e69fb4647ffed55a91d5952b7aff1828358bf4b586634b703f6db40557dbb4b9
[INFO] running `Command { std: "docker" "start" "-a" "e69fb4647ffed55a91d5952b7aff1828358bf4b586634b703f6db40557dbb4b9", kill_on_drop: false }`
[INFO] [stderr]    Compiling backtrace v0.3.71
[INFO] [stderr]     Checking byteorder v1.5.0
[INFO] [stderr]     Checking gimli v0.28.1
[INFO] [stderr]     Checking object v0.32.2
[INFO] [stderr]    Compiling error-chain v0.12.4
[INFO] [stderr]     Checking miniz_oxide v0.7.2
[INFO] [stderr]     Checking memory_units v0.3.0
[INFO] [stderr]     Checking idna v0.2.3
[INFO] [stderr]     Checking flow_impl v0.8.5
[INFO] [stderr]     Checking multimap v0.5.0
[INFO] [stderr]     Checking parity-wasm v0.31.3
[INFO] [stderr]     Checking instant v0.1.12
[INFO] [stderr]     Checking simplog v1.2.2
[INFO] [stderr]     Checking url v2.1.1
[INFO] [stderr]     Checking wasmi-validation v0.1.0
[INFO] [stderr]     Checking wasmi v0.4.5
[INFO] [stderr]     Checking addr2line v0.21.0
[INFO] [stderr]     Checking flowrlib v0.8.8
[INFO] [stderr]     Checking flowruntime v0.8.8 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 5.90s
[INFO] running `Command { std: "docker" "inspect" "e69fb4647ffed55a91d5952b7aff1828358bf4b586634b703f6db40557dbb4b9", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "e69fb4647ffed55a91d5952b7aff1828358bf4b586634b703f6db40557dbb4b9", kill_on_drop: false }`
[INFO] [stdout] e69fb4647ffed55a91d5952b7aff1828358bf4b586634b703f6db40557dbb4b9