[INFO] cloning repository https://github.com/Breezy95/rusty_synth
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/Breezy95/rusty_synth" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FBreezy95%2Frusty_synth", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FBreezy95%2Frusty_synth'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] e58c535e8c2b1e989cfe8cc5e2623b87471b76be
[INFO] checking Breezy95/rusty_synth against try#ddcf048784667508cd676fef4667f88ae15628a3 for pr-148271
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FBreezy95%2Frusty_synth" "/workspace/builds/worker-1-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-1-tc2/source'...
[INFO] [stderr] done.
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[INFO] started tweaking git repo https://github.com/Breezy95/rusty_synth
[INFO] finished tweaking git repo https://github.com/Breezy95/rusty_synth
[INFO] tweaked toml for git repo https://github.com/Breezy95/rusty_synth written to /workspace/builds/worker-1-tc2/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/Breezy95/rusty_synth on toolchain ddcf048784667508cd676fef4667f88ae15628a3
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+ddcf048784667508cd676fef4667f88ae15628a3" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/Breezy95/rusty_synth 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" "+ddcf048784667508cd676fef4667f88ae15628a3" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+ddcf048784667508cd676fef4667f88ae15628a3" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 6af89c4e5767d88e1cd62a3005c860c9b1399bbbfd97111c5613e5fd4390aa9e
[INFO] running `Command { std: "docker" "start" "-a" "6af89c4e5767d88e1cd62a3005c860c9b1399bbbfd97111c5613e5fd4390aa9e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "6af89c4e5767d88e1cd62a3005c860c9b1399bbbfd97111c5613e5fd4390aa9e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "6af89c4e5767d88e1cd62a3005c860c9b1399bbbfd97111c5613e5fd4390aa9e", kill_on_drop: false }`
[INFO] [stdout] 6af89c4e5767d88e1cd62a3005c860c9b1399bbbfd97111c5613e5fd4390aa9e
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+ddcf048784667508cd676fef4667f88ae15628a3" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 1e4032b7ef58c19ae3d7d292278b331bb092afa601480acc7d928b4c863e2612
[INFO] running `Command { std: "docker" "start" "-a" "1e4032b7ef58c19ae3d7d292278b331bb092afa601480acc7d928b4c863e2612", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.139
[INFO] [stderr]    Compiling proc-macro2 v1.0.50
[INFO] [stderr]    Compiling unicode-ident v1.0.6
[INFO] [stderr]    Compiling syn v1.0.107
[INFO] [stderr]     Checking rand_core v0.4.2
[INFO] [stderr]    Compiling num-integer v0.1.45
[INFO] [stderr]    Compiling parking_lot_core v0.9.6
[INFO] [stderr]    Compiling num-traits v0.2.15
[INFO] [stderr]    Compiling alsa-sys v0.3.1
[INFO] [stderr]    Compiling cc v1.0.78
[INFO] [stderr]    Compiling rand_pcg v0.1.2
[INFO] [stderr]    Compiling sdl2-sys v0.32.6
[INFO] [stderr]    Compiling rand_chacha v0.1.1
[INFO] [stderr]    Compiling num-iter v0.1.43
[INFO] [stderr]    Compiling rand v0.6.5
[INFO] [stderr]    Compiling cpal v0.14.2
[INFO] [stderr]     Checking ogg v0.8.0
[INFO] [stderr]    Compiling sdl2 v0.32.2
[INFO] [stderr]     Checking hound v3.5.0
[INFO] [stderr]     Checking lewton v0.10.2
[INFO] [stderr]     Checking rand_core v0.3.1
[INFO] [stderr]     Checking rand_jitter v0.1.4
[INFO] [stderr]     Checking rand_xorshift v0.1.1
[INFO] [stderr]     Checking rand_hc v0.1.0
[INFO] [stderr]     Checking rand_isaac v0.1.1
[INFO] [stdout] error[E0635]: unknown feature `proc_macro_span_shrink`
[INFO] [stdout]   --> /opt/rustwide/cargo-home/registry/src/index.crates.io-1949cf8c6b5b557f/proc-macro2-1.0.50/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]    Compiling minimp3-sys v0.3.2
[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" "1e4032b7ef58c19ae3d7d292278b331bb092afa601480acc7d928b4c863e2612", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "1e4032b7ef58c19ae3d7d292278b331bb092afa601480acc7d928b4c863e2612", kill_on_drop: false }`
[INFO] [stdout] 1e4032b7ef58c19ae3d7d292278b331bb092afa601480acc7d928b4c863e2612
