[INFO] fetching crate async-filedb 0.3.0...
[INFO] checking async-filedb-0.3.0 against master#385fa9d845dd326c6bbfd58c22244215e431948a for absurd-question-mark-desugar
[INFO] extracting crate async-filedb 0.3.0 into /workspace/builds/worker-0-tc1/source
[INFO] validating manifest of crates.io crate async-filedb 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 async-filedb 0.3.0
[INFO] finished tweaking crates.io crate async-filedb 0.3.0
[INFO] tweaked toml for crates.io crate async-filedb 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 31 packages
[INFO] [stderr]       Adding async-channel v1.9.0 (latest: v2.2.0)
[INFO] [stderr]       Adding event-listener v2.5.3 (latest: v5.3.0)
[INFO] [stderr]       Adding event-listener v4.0.3 (latest: v5.3.0)
[INFO] [stderr]       Adding event-listener-strategy v0.4.0 (latest: v0.5.1)
[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 event-listener-strategy v0.4.0
[INFO] [stderr]   Downloaded parking v2.2.0
[INFO] [stderr]   Downloaded async-kvdb v0.3.1
[INFO] [stderr]   Downloaded concurrent-queue v2.4.0
[INFO] [stderr]   Downloaded event-listener v4.0.3
[INFO] [stderr]   Downloaded async-lock v3.3.0
[INFO] [stderr]   Downloaded event-listener v2.5.3
[INFO] [stderr]   Downloaded async-channel v1.9.0
[INFO] [stderr]   Downloaded smol_str v0.2.1
[INFO] [stderr]   Downloaded async-memorydb v0.3.2
[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] 6d63bbd7001e2e69ef06ca3a9014ab4b7d76fb5237b1b46f71fcebe075b55d5b
[INFO] running `Command { std: "docker" "start" "-a" "6d63bbd7001e2e69ef06ca3a9014ab4b7d76fb5237b1b46f71fcebe075b55d5b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "6d63bbd7001e2e69ef06ca3a9014ab4b7d76fb5237b1b46f71fcebe075b55d5b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "6d63bbd7001e2e69ef06ca3a9014ab4b7d76fb5237b1b46f71fcebe075b55d5b", kill_on_drop: false }`
[INFO] [stdout] 6d63bbd7001e2e69ef06ca3a9014ab4b7d76fb5237b1b46f71fcebe075b55d5b
[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] 09cc9b5ad74d6c13fb9f0f2644d852d1754c7ba5bca2f660122d1ae29d6788ae
[INFO] running `Command { std: "docker" "start" "-a" "09cc9b5ad74d6c13fb9f0f2644d852d1754c7ba5bca2f660122d1ae29d6788ae", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.79
[INFO] [stderr]    Compiling crossbeam-utils v0.8.19
[INFO] [stderr]     Checking parking v2.2.0
[INFO] [stderr]    Compiling async-trait v0.1.79
[INFO] [stderr]     Checking smol_str v0.2.1
[INFO] [stderr]     Checking percent-encoding v2.3.1
[INFO] [stderr]     Checking event-listener v2.5.3
[INFO] [stderr]     Checking form_urlencoded v1.2.1
[INFO] [stderr]    Compiling quote v1.0.35
[INFO] [stderr]     Checking concurrent-queue v2.4.0
[INFO] [stderr]    Compiling syn v2.0.58
[INFO] [stderr]     Checking event-listener v4.0.3
[INFO] [stderr]     Checking async-channel v1.9.0
[INFO] [stderr]     Checking event-listener-strategy v0.4.0
[INFO] [stderr]     Checking async-lock v3.3.0
[INFO] [stderr]    Compiling futures-macro v0.3.30
[INFO] [stderr]     Checking futures-util v0.3.30
[INFO] [stderr]     Checking async-kvdb v0.3.1
[INFO] [stderr]     Checking async-memorydb v0.3.2
[INFO] [stderr]     Checking async-filedb v0.3.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 8.82s
[INFO] running `Command { std: "docker" "inspect" "09cc9b5ad74d6c13fb9f0f2644d852d1754c7ba5bca2f660122d1ae29d6788ae", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "09cc9b5ad74d6c13fb9f0f2644d852d1754c7ba5bca2f660122d1ae29d6788ae", kill_on_drop: false }`
[INFO] [stdout] 09cc9b5ad74d6c13fb9f0f2644d852d1754c7ba5bca2f660122d1ae29d6788ae
[INFO] checking async-filedb-0.3.0 against try#645bb72776a6a56a1a8f52631a44bd082b2ba509 for absurd-question-mark-desugar
[INFO] extracting crate async-filedb 0.3.0 into /workspace/builds/worker-0-tc2/source
[INFO] validating manifest of crates.io crate async-filedb 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 async-filedb 0.3.0
[INFO] finished tweaking crates.io crate async-filedb 0.3.0
[INFO] tweaked toml for crates.io crate async-filedb 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] 6e508fcb1b0b9717d423c89121d8a740b23a9c01f31a366e016506d9ea66c4c6
[INFO] running `Command { std: "docker" "start" "-a" "6e508fcb1b0b9717d423c89121d8a740b23a9c01f31a366e016506d9ea66c4c6", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "6e508fcb1b0b9717d423c89121d8a740b23a9c01f31a366e016506d9ea66c4c6", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "6e508fcb1b0b9717d423c89121d8a740b23a9c01f31a366e016506d9ea66c4c6", kill_on_drop: false }`
[INFO] [stdout] 6e508fcb1b0b9717d423c89121d8a740b23a9c01f31a366e016506d9ea66c4c6
[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] 3c5e41c15c1fc9c2136bf4fb8ed05336a50aa1449cf5cab7b20ec75f9e678929
[INFO] running `Command { std: "docker" "start" "-a" "3c5e41c15c1fc9c2136bf4fb8ed05336a50aa1449cf5cab7b20ec75f9e678929", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.79
[INFO] [stderr]    Compiling crossbeam-utils v0.8.19
[INFO] [stderr]     Checking parking v2.2.0
[INFO] [stderr]    Compiling async-trait v0.1.79
[INFO] [stderr]     Checking smol_str v0.2.1
[INFO] [stderr]     Checking event-listener v2.5.3
[INFO] [stderr]     Checking percent-encoding v2.3.1
[INFO] [stderr]     Checking form_urlencoded v1.2.1
[INFO] [stderr]    Compiling quote v1.0.35
[INFO] [stderr]     Checking concurrent-queue v2.4.0
[INFO] [stderr]    Compiling syn v2.0.58
[INFO] [stderr]     Checking event-listener v4.0.3
[INFO] [stderr]     Checking async-channel v1.9.0
[INFO] [stderr]     Checking event-listener-strategy v0.4.0
[INFO] [stderr]     Checking async-lock v3.3.0
[INFO] [stderr]    Compiling futures-macro v0.3.30
[INFO] [stderr]     Checking futures-util v0.3.30
[INFO] [stderr]     Checking async-kvdb v0.3.1
[INFO] [stderr]     Checking async-memorydb v0.3.2
[INFO] [stderr]     Checking async-filedb v0.3.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 7.31s
[INFO] running `Command { std: "docker" "inspect" "3c5e41c15c1fc9c2136bf4fb8ed05336a50aa1449cf5cab7b20ec75f9e678929", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "3c5e41c15c1fc9c2136bf4fb8ed05336a50aa1449cf5cab7b20ec75f9e678929", kill_on_drop: false }`
[INFO] [stdout] 3c5e41c15c1fc9c2136bf4fb8ed05336a50aa1449cf5cab7b20ec75f9e678929