[INFO] fetching crate stakker_mio 0.2.5...
[INFO] checking stakker_mio-0.2.5 against master#385fa9d845dd326c6bbfd58c22244215e431948a for absurd-question-mark-desugar
[INFO] extracting crate stakker_mio 0.2.5 into /workspace/builds/worker-4-tc1/source
[INFO] validating manifest of crates.io crate stakker_mio 0.2.5 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 stakker_mio 0.2.5
[INFO] finished tweaking crates.io crate stakker_mio 0.2.5
[INFO] tweaked toml for crates.io crate stakker_mio 0.2.5 written to /workspace/builds/worker-4-tc1/source/Cargo.toml
[INFO] crate crates.io crate stakker_mio 0.2.5 already has a lockfile, it will not be regenerated
[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]     Updating crates.io index
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded qcell v0.5.3
[INFO] [stderr]   Downloaded anymap v0.12.1
[INFO] [stderr]   Downloaded wasm-bindgen-shared v0.2.84
[INFO] [stderr]   Downloaded wasm-bindgen-macro v0.2.84
[INFO] [stderr]   Downloaded wasm-bindgen-macro-support v0.2.84
[INFO] [stderr]   Downloaded wasm-bindgen-backend v0.2.84
[INFO] [stderr]   Downloaded proc-macro2 v1.0.52
[INFO] [stderr]   Downloaded mio v0.8.6
[INFO] [stderr]   Downloaded js-sys v0.3.61
[INFO] [stderr]   Downloaded wasm-bindgen v0.2.84
[INFO] [stderr]   Downloaded bumpalo v3.12.0
[INFO] [stderr]   Downloaded web-sys v0.3.61
[INFO] [stderr]   Downloaded libc v0.2.140
[INFO] [stderr]   Downloaded unicode-ident v1.0.8
[INFO] [stderr]   Downloaded stakker v0.2.5
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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] 9bc32274eec443ba65b9d0b5ee4c95911199258566d579ab5a50bdd70940fe29
[INFO] running `Command { std: "docker" "start" "-a" "9bc32274eec443ba65b9d0b5ee4c95911199258566d579ab5a50bdd70940fe29", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "9bc32274eec443ba65b9d0b5ee4c95911199258566d579ab5a50bdd70940fe29", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "9bc32274eec443ba65b9d0b5ee4c95911199258566d579ab5a50bdd70940fe29", kill_on_drop: false }`
[INFO] [stdout] 9bc32274eec443ba65b9d0b5ee4c95911199258566d579ab5a50bdd70940fe29
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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] 78331e4ec8e219a784bde2172d103c1bef449948664f115f08f1ebb37fee1c87
[INFO] running `Command { std: "docker" "start" "-a" "78331e4ec8e219a784bde2172d103c1bef449948664f115f08f1ebb37fee1c87", kill_on_drop: false }`
[INFO] [stderr]    Compiling autocfg v1.1.0
[INFO] [stderr]    Compiling libc v0.2.140
[INFO] [stderr]    Compiling log v0.4.17
[INFO] [stderr]     Checking once_cell v1.17.1
[INFO] [stderr]     Checking anymap v0.12.1
[INFO] [stderr]     Checking static_assertions v1.1.0
[INFO] [stderr]     Checking qcell v0.5.3
[INFO] [stderr]    Compiling slab v0.4.8
[INFO] [stderr]     Checking stakker v0.2.5
[INFO] [stderr]     Checking mio v0.8.6
[INFO] [stderr]     Checking stakker_mio v0.2.5 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 3.73s
[INFO] running `Command { std: "docker" "inspect" "78331e4ec8e219a784bde2172d103c1bef449948664f115f08f1ebb37fee1c87", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "78331e4ec8e219a784bde2172d103c1bef449948664f115f08f1ebb37fee1c87", kill_on_drop: false }`
[INFO] [stdout] 78331e4ec8e219a784bde2172d103c1bef449948664f115f08f1ebb37fee1c87
[INFO] checking stakker_mio-0.2.5 against try#645bb72776a6a56a1a8f52631a44bd082b2ba509 for absurd-question-mark-desugar
[INFO] extracting crate stakker_mio 0.2.5 into /workspace/builds/worker-4-tc2/source
[INFO] validating manifest of crates.io crate stakker_mio 0.2.5 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 stakker_mio 0.2.5
[INFO] finished tweaking crates.io crate stakker_mio 0.2.5
[INFO] tweaked toml for crates.io crate stakker_mio 0.2.5 written to /workspace/builds/worker-4-tc2/source/Cargo.toml
[INFO] crate crates.io crate stakker_mio 0.2.5 already has a lockfile, it will not be regenerated
[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-4-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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] 9a051fe2e7d37faeb76c133009c1e59b616daf04141e93faafd7fbfd9fa3f955
[INFO] running `Command { std: "docker" "start" "-a" "9a051fe2e7d37faeb76c133009c1e59b616daf04141e93faafd7fbfd9fa3f955", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "9a051fe2e7d37faeb76c133009c1e59b616daf04141e93faafd7fbfd9fa3f955", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "9a051fe2e7d37faeb76c133009c1e59b616daf04141e93faafd7fbfd9fa3f955", kill_on_drop: false }`
[INFO] [stdout] 9a051fe2e7d37faeb76c133009c1e59b616daf04141e93faafd7fbfd9fa3f955
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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] bc3fd91fab4021861d8504d82563ab677b12ac52fd6c0d6682e79947b3fbab69
[INFO] running `Command { std: "docker" "start" "-a" "bc3fd91fab4021861d8504d82563ab677b12ac52fd6c0d6682e79947b3fbab69", kill_on_drop: false }`
[INFO] [stderr]    Compiling autocfg v1.1.0
[INFO] [stderr]    Compiling log v0.4.17
[INFO] [stderr]    Compiling libc v0.2.140
[INFO] [stderr]     Checking once_cell v1.17.1
[INFO] [stderr]     Checking anymap v0.12.1
[INFO] [stderr]     Checking static_assertions v1.1.0
[INFO] [stderr]     Checking qcell v0.5.3
[INFO] [stderr]    Compiling slab v0.4.8
[INFO] [stderr]     Checking stakker v0.2.5
[INFO] [stderr]     Checking mio v0.8.6
[INFO] [stderr]     Checking stakker_mio v0.2.5 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 3.51s
[INFO] running `Command { std: "docker" "inspect" "bc3fd91fab4021861d8504d82563ab677b12ac52fd6c0d6682e79947b3fbab69", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "bc3fd91fab4021861d8504d82563ab677b12ac52fd6c0d6682e79947b3fbab69", kill_on_drop: false }`
[INFO] [stdout] bc3fd91fab4021861d8504d82563ab677b12ac52fd6c0d6682e79947b3fbab69