[INFO] cloning repository https://github.com/vt6/vt6.rs
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/vt6/vt6.rs" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fvt6%2Fvt6.rs", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fvt6%2Fvt6.rs'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 97b9b1acd61318179af92850b6b4022cd155161b
[INFO] checking vt6/vt6.rs against master#385fa9d845dd326c6bbfd58c22244215e431948a for absurd-question-mark-desugar
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fvt6%2Fvt6.rs" "/workspace/builds/worker-4-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-4-tc1/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/vt6/vt6.rs 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 git repo https://github.com/vt6/vt6.rs
[INFO] finished tweaking git repo https://github.com/vt6/vt6.rs
[INFO] tweaked toml for git repo https://github.com/vt6/vt6.rs written to /workspace/builds/worker-4-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 68 packages
[INFO] [stderr]       Adding base64 v0.13.1 (latest: v0.22.0)
[INFO] [stderr]       Adding bitflags v1.3.2 (latest: v2.5.0)
[INFO] [stderr]       Adding object v0.32.2 (latest: v0.34.0)
[INFO] [stderr]       Adding redox_syscall v0.4.1 (latest: v0.5.1)
[INFO] [stderr]       Adding wasi v0.11.0+wasi-snapshot-preview1 (latest: v0.13.0+wasi-0.2.0)
[INFO] [stderr]       Adding windows-sys v0.48.0 (latest: v0.52.0)
[INFO] [stderr]       Adding windows-targets v0.48.5 (latest: v0.52.4)
[INFO] [stderr]       Adding windows_aarch64_gnullvm v0.48.5 (latest: v0.52.4)
[INFO] [stderr]       Adding windows_aarch64_msvc v0.48.5 (latest: v0.52.4)
[INFO] [stderr]       Adding windows_i686_gnu v0.48.5 (latest: v0.52.4)
[INFO] [stderr]       Adding windows_i686_msvc v0.48.5 (latest: v0.52.4)
[INFO] [stderr]       Adding windows_x86_64_gnu v0.48.5 (latest: v0.52.4)
[INFO] [stderr]       Adding windows_x86_64_gnullvm v0.48.5 (latest: v0.52.4)
[INFO] [stderr]       Adding windows_x86_64_msvc v0.48.5 (latest: v0.52.4)
[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 belog v0.1.0
[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] 1bbe928069df9f2f60842bc65f3db2129dd081c7734ce3c55630d5470c31dcc9
[INFO] running `Command { std: "docker" "start" "-a" "1bbe928069df9f2f60842bc65f3db2129dd081c7734ce3c55630d5470c31dcc9", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "1bbe928069df9f2f60842bc65f3db2129dd081c7734ce3c55630d5470c31dcc9", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "1bbe928069df9f2f60842bc65f3db2129dd081c7734ce3c55630d5470c31dcc9", kill_on_drop: false }`
[INFO] [stdout] 1bbe928069df9f2f60842bc65f3db2129dd081c7734ce3c55630d5470c31dcc9
[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] e48fbb183bb9ceb625d6e7d8558f0e1d9fa202752f5dbe60fcdf9c75c15c9b77
[INFO] running `Command { std: "docker" "start" "-a" "e48fbb183bb9ceb625d6e7d8558f0e1d9fa202752f5dbe60fcdf9c75c15c9b77", kill_on_drop: false }`
[INFO] [stderr]    Compiling autocfg v1.2.0
[INFO] [stderr]    Compiling proc-macro2 v1.0.79
[INFO] [stderr]    Compiling unicode-ident v1.0.12
[INFO] [stderr]     Checking futures-sink v0.3.30
[INFO] [stderr]    Compiling parking_lot_core v0.9.9
[INFO] [stderr]     Checking pin-project-lite v0.2.14
[INFO] [stderr]     Checking futures-core v0.3.30
[INFO] [stderr]     Checking futures-io v0.3.30
[INFO] [stderr]     Checking smallvec v1.13.2
[INFO] [stderr]     Checking memchr v2.7.2
[INFO] [stderr]     Checking scopeguard v1.2.0
[INFO] [stderr]     Checking bytes v1.6.0
[INFO] [stderr]     Checking base64 v0.13.1
[INFO] [stderr]     Checking log v0.4.21
[INFO] [stderr]     Checking num_cpus v1.16.0
[INFO] [stderr]     Checking mio v0.8.11
[INFO] [stderr]     Checking socket2 v0.5.6
[INFO] [stderr]     Checking getrandom v0.2.13
[INFO] [stderr]     Checking futures-channel v0.3.30
[INFO] [stderr]     Checking belog v0.1.0
[INFO] [stderr]    Compiling slab v0.4.9
[INFO] [stderr]    Compiling lock_api v0.4.11
[INFO] [stderr]     Checking parking_lot v0.12.1
[INFO] [stderr]    Compiling quote v1.0.35
[INFO] [stderr]    Compiling syn v2.0.58
[INFO] [stderr]    Compiling futures-macro v0.3.30
[INFO] [stderr]    Compiling tokio-macros v2.2.0
[INFO] [stderr]     Checking tokio v1.37.0
[INFO] [stderr]     Checking futures-util v0.3.30
[INFO] [stderr]     Checking futures-executor v0.3.30
[INFO] [stderr]     Checking futures v0.3.30
[INFO] [stderr]     Checking vt6 v0.0.1 (/opt/rustwide/workdir)
[INFO] [stderr]     Checking vt6-example-server v0.0.1 (/opt/rustwide/workdir/example-server)
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 13.56s
[INFO] running `Command { std: "docker" "inspect" "e48fbb183bb9ceb625d6e7d8558f0e1d9fa202752f5dbe60fcdf9c75c15c9b77", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "e48fbb183bb9ceb625d6e7d8558f0e1d9fa202752f5dbe60fcdf9c75c15c9b77", kill_on_drop: false }`
[INFO] [stdout] e48fbb183bb9ceb625d6e7d8558f0e1d9fa202752f5dbe60fcdf9c75c15c9b77
[INFO] checking vt6/vt6.rs against try#645bb72776a6a56a1a8f52631a44bd082b2ba509 for absurd-question-mark-desugar
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fvt6%2Fvt6.rs" "/workspace/builds/worker-4-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-4-tc2/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/vt6/vt6.rs 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 git repo https://github.com/vt6/vt6.rs
[INFO] finished tweaking git repo https://github.com/vt6/vt6.rs
[INFO] tweaked toml for git repo https://github.com/vt6/vt6.rs written to /workspace/builds/worker-4-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-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] 11a9e6b52db5e97038bc53df0c5275dcd8f82a7f00786927e2179b2ca05ee799
[INFO] running `Command { std: "docker" "start" "-a" "11a9e6b52db5e97038bc53df0c5275dcd8f82a7f00786927e2179b2ca05ee799", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "11a9e6b52db5e97038bc53df0c5275dcd8f82a7f00786927e2179b2ca05ee799", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "11a9e6b52db5e97038bc53df0c5275dcd8f82a7f00786927e2179b2ca05ee799", kill_on_drop: false }`
[INFO] [stdout] 11a9e6b52db5e97038bc53df0c5275dcd8f82a7f00786927e2179b2ca05ee799
[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] f8c128635777748b6570c2d117fe8176d8a59ceca4aee5b968190bec061480ff
[INFO] running `Command { std: "docker" "start" "-a" "f8c128635777748b6570c2d117fe8176d8a59ceca4aee5b968190bec061480ff", kill_on_drop: false }`
[INFO] [stderr]    Compiling autocfg v1.2.0
[INFO] [stderr]    Compiling proc-macro2 v1.0.79
[INFO] [stderr]    Compiling unicode-ident v1.0.12
[INFO] [stderr]     Checking futures-sink v0.3.30
[INFO] [stderr]     Checking pin-project-lite v0.2.14
[INFO] [stderr]    Compiling parking_lot_core v0.9.9
[INFO] [stderr]     Checking futures-core v0.3.30
[INFO] [stderr]     Checking memchr v2.7.2
[INFO] [stderr]     Checking scopeguard v1.2.0
[INFO] [stderr]     Checking futures-io v0.3.30
[INFO] [stderr]     Checking smallvec v1.13.2
[INFO] [stderr]     Checking bytes v1.6.0
[INFO] [stderr]     Checking base64 v0.13.1
[INFO] [stderr]     Checking log v0.4.21
[INFO] [stderr]     Checking socket2 v0.5.6
[INFO] [stderr]     Checking mio v0.8.11
[INFO] [stderr]     Checking num_cpus v1.16.0
[INFO] [stderr]     Checking getrandom v0.2.13
[INFO] [stderr]     Checking futures-channel v0.3.30
[INFO] [stderr]     Checking belog v0.1.0
[INFO] [stderr]    Compiling slab v0.4.9
[INFO] [stderr]    Compiling lock_api v0.4.11
[INFO] [stderr]    Compiling quote v1.0.35
[INFO] [stderr]    Compiling syn v2.0.58
[INFO] [stderr]     Checking parking_lot v0.12.1
[INFO] [stderr]    Compiling futures-macro v0.3.30
[INFO] [stderr]    Compiling tokio-macros v2.2.0
[INFO] [stderr]     Checking tokio v1.37.0
[INFO] [stderr]     Checking futures-util v0.3.30
[INFO] [stderr]     Checking futures-executor v0.3.30
[INFO] [stderr]     Checking futures v0.3.30
[INFO] [stderr]     Checking vt6 v0.0.1 (/opt/rustwide/workdir)
[INFO] [stderr]     Checking vt6-example-server v0.0.1 (/opt/rustwide/workdir/example-server)
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 14.10s
[INFO] running `Command { std: "docker" "inspect" "f8c128635777748b6570c2d117fe8176d8a59ceca4aee5b968190bec061480ff", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "f8c128635777748b6570c2d117fe8176d8a59ceca4aee5b968190bec061480ff", kill_on_drop: false }`
[INFO] [stdout] f8c128635777748b6570c2d117fe8176d8a59ceca4aee5b968190bec061480ff