[INFO] cloning repository https://github.com/CaptainWheelChair/MusicalPenguin
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/CaptainWheelChair/MusicalPenguin" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FCaptainWheelChair%2FMusicalPenguin", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FCaptainWheelChair%2FMusicalPenguin'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 702489c71aeda8482eb627eab3fc849198cf4486
[INFO] checking CaptainWheelChair/MusicalPenguin against master#779e19d8baa3e3625bd4fc5c85cbb2ad47b43155 for pr-147589-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FCaptainWheelChair%2FMusicalPenguin" "/workspace/builds/worker-5-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-5-tc1/source'...
[INFO] [stderr] done.
[INFO] started tweaking git repo https://github.com/CaptainWheelChair/MusicalPenguin
[INFO] finished tweaking git repo https://github.com/CaptainWheelChair/MusicalPenguin
[INFO] tweaked toml for git repo https://github.com/CaptainWheelChair/MusicalPenguin written to /workspace/builds/worker-5-tc1/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/CaptainWheelChair/MusicalPenguin on toolchain 779e19d8baa3e3625bd4fc5c85cbb2ad47b43155
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+779e19d8baa3e3625bd4fc5c85cbb2ad47b43155" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/CaptainWheelChair/MusicalPenguin 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" "+779e19d8baa3e3625bd4fc5c85cbb2ad47b43155" "fetch" "--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]  Downloading crates ...
[INFO] [stderr]   Downloaded serenity-voice-model v0.1.1
[INFO] [stderr]   Downloaded audiopus v0.3.0-rc.0
[INFO] [stderr]   Downloaded async-tungstenite v0.17.2
[INFO] [stderr]   Downloaded xsalsa20poly1305 v0.8.0
[INFO] [stderr]   Downloaded streamcatcher v1.0.1
[INFO] [stderr]   Downloaded generator v0.7.3
[INFO] [stderr]   Downloaded songbird v0.3.2
[INFO] [stderr]   Downloaded symphonia-core v0.5.2
[INFO] [stderr]   Downloaded serenity v0.11.5
[INFO] [stderr]   Downloaded audiopus_sys v0.2.2
[INFO] [stderr]   Downloaded slashy v0.1.2
[INFO] [stderr]   Downloaded slashy_macros v0.1.2
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+779e19d8baa3e3625bd4fc5c85cbb2ad47b43155" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] e1ee4783daf0bf3afd2f9006b3f3ba4f3c2a32fc1ee8fb4a7d0be5c97dcefdc3
[INFO] running `Command { std: "docker" "start" "-a" "e1ee4783daf0bf3afd2f9006b3f3ba4f3c2a32fc1ee8fb4a7d0be5c97dcefdc3", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "e1ee4783daf0bf3afd2f9006b3f3ba4f3c2a32fc1ee8fb4a7d0be5c97dcefdc3", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "e1ee4783daf0bf3afd2f9006b3f3ba4f3c2a32fc1ee8fb4a7d0be5c97dcefdc3", kill_on_drop: false }`
[INFO] [stdout] e1ee4783daf0bf3afd2f9006b3f3ba4f3c2a32fc1ee8fb4a7d0be5c97dcefdc3
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+779e19d8baa3e3625bd4fc5c85cbb2ad47b43155" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 128e73a976ea1702074dff4c5a5252820ab67a5fcb75f5b6b0985688b0ed1c30
[INFO] running `Command { std: "docker" "start" "-a" "128e73a976ea1702074dff4c5a5252820ab67a5fcb75f5b6b0985688b0ed1c30", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.56
[INFO] [stderr]    Compiling serde v1.0.160
[INFO] [stderr]    Compiling ring v0.16.20
[INFO] [stderr]     Checking getrandom v0.2.9
[INFO] [stderr]     Checking num_cpus v1.15.0
[INFO] [stderr]     Checking signal-hook-registry v1.4.1
[INFO] [stderr]     Checking mio v0.8.6
[INFO] [stderr]     Checking socket2 v0.4.9
[INFO] [stderr]    Compiling mime_guess v2.0.4
[INFO] [stderr]     Checking digest v0.10.6
[INFO] [stderr]     Checking parking_lot_core v0.9.7
[INFO] [stderr]     Checking unicase v2.6.0
[INFO] [stderr]    Compiling cmake v0.1.50
[INFO] [stderr]     Checking rustls-pemfile v1.0.2
[INFO] [stderr]     Checking miniz_oxide v0.6.2
[INFO] [stderr]    Compiling aho-corasick v0.7.20
[INFO] [stderr]     Checking ordered-float v2.10.0
[INFO] [stdout] error[E0635]: unknown feature `proc_macro_span_shrink`
[INFO] [stdout]   --> /opt/rustwide/cargo-home/registry/src/index.crates.io-1949cf8c6b5b557f/proc-macro2-1.0.56/src/lib.rs:92:30
[INFO] [stdout]    |
[INFO] [stdout] 92 |     feature(proc_macro_span, proc_macro_span_shrink)
[INFO] [stdout]    |                              ^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Checking encoding_rs v0.8.32
[INFO] [stderr]     Checking time-core v0.1.0
[INFO] [stderr]    Compiling serenity v0.11.5
[INFO] [stderr]    Compiling crossbeam-utils v0.8.15
[INFO] [stdout] For more information about this error, try `rustc --explain E0635`.
[INFO] [stdout] 
[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" "128e73a976ea1702074dff4c5a5252820ab67a5fcb75f5b6b0985688b0ed1c30", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "128e73a976ea1702074dff4c5a5252820ab67a5fcb75f5b6b0985688b0ed1c30", kill_on_drop: false }`
[INFO] [stdout] 128e73a976ea1702074dff4c5a5252820ab67a5fcb75f5b6b0985688b0ed1c30
