[INFO] cloning repository https://github.com/suap-dev/flappy_dragon
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/suap-dev/flappy_dragon" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fsuap-dev%2Fflappy_dragon", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fsuap-dev%2Fflappy_dragon'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 5921e47daeb3bcbb6b396ff228a247196309cb80
[INFO] checking suap-dev/flappy_dragon against try#3248bace201b6227b0ff78eacc8b00d805551a86 for pr-153513
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fsuap-dev%2Fflappy_dragon" "/workspace/builds/worker-6-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-6-tc2/source'...
[INFO] [stderr] done.
[INFO] started tweaking git repo https://github.com/suap-dev/flappy_dragon
[INFO] finished tweaking git repo https://github.com/suap-dev/flappy_dragon
[INFO] tweaked toml for git repo https://github.com/suap-dev/flappy_dragon written to /workspace/builds/worker-6-tc2/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/suap-dev/flappy_dragon on toolchain 3248bace201b6227b0ff78eacc8b00d805551a86
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+3248bace201b6227b0ff78eacc8b00d805551a86" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/suap-dev/flappy_dragon 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" "+3248bace201b6227b0ff78eacc8b00d805551a86" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded bracket-random v0.8.7
[INFO] [stderr]   Downloaded num_enum_derive v0.5.10
[INFO] [stderr]   Downloaded bracket-embedding v0.8.7
[INFO] [stderr]   Downloaded bracket-rex v0.8.7
[INFO] [stderr]   Downloaded wide v0.7.6
[INFO] [stderr]   Downloaded bracket-noise v0.8.7
[INFO] [stderr]   Downloaded bracket-geometry v0.8.7
[INFO] [stderr]   Downloaded bracket-color v0.8.7
[INFO] [stderr]   Downloaded calloop v0.10.5
[INFO] [stderr]   Downloaded bracket-algorithm-traits v0.8.7
[INFO] [stderr]   Downloaded bracket-pathfinding v0.8.7
[INFO] [stderr]   Downloaded num_enum v0.5.10
[INFO] [stderr]   Downloaded memmap2 v0.5.9
[INFO] [stderr]   Downloaded bracket-terminal v0.8.7
[INFO] [stderr]   Downloaded bracket-lib v0.8.7
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-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:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+3248bace201b6227b0ff78eacc8b00d805551a86" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 1a9c4eff9b10dea3c738fee2d5dbdfe05a0c9f6104d8eef4d43d93fbbc2384ec
[INFO] running `Command { std: "docker" "start" "-a" "1a9c4eff9b10dea3c738fee2d5dbdfe05a0c9f6104d8eef4d43d93fbbc2384ec", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "1a9c4eff9b10dea3c738fee2d5dbdfe05a0c9f6104d8eef4d43d93fbbc2384ec", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "1a9c4eff9b10dea3c738fee2d5dbdfe05a0c9f6104d8eef4d43d93fbbc2384ec", kill_on_drop: false }`
[INFO] [stdout] 1a9c4eff9b10dea3c738fee2d5dbdfe05a0c9f6104d8eef4d43d93fbbc2384ec
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-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:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+3248bace201b6227b0ff78eacc8b00d805551a86" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 9beb9c5276238d65c88a35ff578adf02eeb985bc8d01aa819090b46d1df24da5
[INFO] running `Command { std: "docker" "start" "-a" "9beb9c5276238d65c88a35ff578adf02eeb985bc8d01aa819090b46d1df24da5", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.139
[INFO] [stderr]    Compiling unicode-ident v1.0.6
[INFO] [stderr]    Compiling xml-rs v0.8.4
[INFO] [stderr]     Checking bytemuck v1.13.0
[INFO] [stderr]    Compiling syn v1.0.107
[INFO] [stderr]    Compiling cmake v0.1.49
[INFO] [stderr]    Compiling memoffset v0.6.5
[INFO] [stderr]    Compiling wayland-sys v0.29.5
[INFO] [stderr]    Compiling lock_api v0.4.9
[INFO] [stderr]    Compiling khronos_api v3.1.0
[INFO] [stderr]    Compiling parking_lot_core v0.9.7
[INFO] [stderr]     Checking flate2 v1.0.25
[INFO] [stderr]    Compiling servo-fontconfig-sys v5.1.0
[INFO] [stderr]    Compiling thiserror v1.0.38
[INFO] [stderr]    Compiling slotmap v1.0.6
[INFO] [stderr]     Checking nom v7.1.3
[INFO] [stderr]    Compiling proc-macro2 v1.0.51
[INFO] [stdout] error[E0635]: unknown feature `proc_macro_span_shrink`
[INFO] [stdout]   --> /opt/rustwide/cargo-home/registry/src/index.crates.io-1949cf8c6b5b557f/proc-macro2-1.0.51/src/lib.rs:92:30
[INFO] [stdout]    |
[INFO] [stdout] 92 |     feature(proc_macro_span, proc_macro_span_shrink)
[INFO] [stdout]    |                              ^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout] help: there is a feature with a similar name: `proc_macro_span_file`
[INFO] [stdout]    |
[INFO] [stdout] 92 -     feature(proc_macro_span, proc_macro_span_shrink)
[INFO] [stdout] 92 +     feature(proc_macro_span, proc_macro_span_file)
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]    Compiling crossfont v0.5.1
[INFO] [stderr]     Checking instant v0.1.12
[INFO] [stderr]     Checking safe_arch v0.6.0
[INFO] [stderr]    Compiling x11-dl v2.21.0
[INFO] [stdout] For more information about this error, try `rustc --explain E0635`.
[INFO] [stdout] 
[INFO] [stderr]    Compiling smithay-client-toolkit v0.16.0
[INFO] [stderr] error: could not compile `proc-macro2` (lib) due to 1 previous error
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] running `Command { std: "docker" "inspect" "9beb9c5276238d65c88a35ff578adf02eeb985bc8d01aa819090b46d1df24da5", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "9beb9c5276238d65c88a35ff578adf02eeb985bc8d01aa819090b46d1df24da5", kill_on_drop: false }`
[INFO] [stdout] 9beb9c5276238d65c88a35ff578adf02eeb985bc8d01aa819090b46d1df24da5