[INFO] cloning repository https://github.com/VikingPingvin/Rust_Synth
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/VikingPingvin/Rust_Synth" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FVikingPingvin%2FRust_Synth", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FVikingPingvin%2FRust_Synth'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] eeff2ad0dc3376fbe22444f144c18ee9d91c4000
[INFO] checking VikingPingvin/Rust_Synth against master#ceab6128fa48a616bfd3e3adf4bc80133b8ee223 for no-never-type-fallback
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FVikingPingvin%2FRust_Synth" "/workspace/builds/worker-2-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-2-tc1/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/VikingPingvin/Rust_Synth on toolchain ceab6128fa48a616bfd3e3adf4bc80133b8ee223
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+ceab6128fa48a616bfd3e3adf4bc80133b8ee223" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/VikingPingvin/Rust_Synth
[INFO] finished tweaking git repo https://github.com/VikingPingvin/Rust_Synth
[INFO] tweaked toml for git repo https://github.com/VikingPingvin/Rust_Synth written to /workspace/builds/worker-2-tc1/source/Cargo.toml
[INFO] crate git repo https://github.com/VikingPingvin/Rust_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" "+ceab6128fa48a616bfd3e3adf4bc80133b8ee223" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded time v0.1.37
[INFO] [stderr]   Downloaded cpal v0.4.5
[INFO] [stderr]   Downloaded coreaudio-rs v0.6.0
[INFO] [stderr]   Downloaded redox_syscall v0.1.17
[INFO] [stderr]   Downloaded futures v0.1.13
[INFO] [stderr]   Downloaded libc v0.2.22
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-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" "+ceab6128fa48a616bfd3e3adf4bc80133b8ee223" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] c26c5dcd209eaea4b28f0ab6eb41d2401e31833eeebf1dfc2c80132074ddd1d6
[INFO] running `Command { std: "docker" "start" "-a" "c26c5dcd209eaea4b28f0ab6eb41d2401e31833eeebf1dfc2c80132074ddd1d6", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "c26c5dcd209eaea4b28f0ab6eb41d2401e31833eeebf1dfc2c80132074ddd1d6", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "c26c5dcd209eaea4b28f0ab6eb41d2401e31833eeebf1dfc2c80132074ddd1d6", kill_on_drop: false }`
[INFO] [stdout] c26c5dcd209eaea4b28f0ab6eb41d2401e31833eeebf1dfc2c80132074ddd1d6
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-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" "+ceab6128fa48a616bfd3e3adf4bc80133b8ee223" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] ec11ed12fa22424dbf509df546dcc7e6fc025f83bbc3853204c85a0bbe750cda
[INFO] running `Command { std: "docker" "start" "-a" "ec11ed12fa22424dbf509df546dcc7e6fc025f83bbc3853204c85a0bbe750cda", kill_on_drop: false }`
[INFO] [stderr]    Compiling pkg-config v0.3.9
[INFO] [stderr]     Checking libc v0.2.22
[INFO] [stderr]     Checking lazy_static v0.2.8
[INFO] [stderr]     Checking futures v0.1.13
[INFO] [stderr]     Checking notesender v0.1.0 (/opt/rustwide/workdir/dependencies/notesender)
[INFO] [stderr]     Checking synth v0.1.0 (/opt/rustwide/workdir/dependencies/synth)
[INFO] [stderr]    Compiling alsa-sys v0.1.1
[INFO] [stderr]     Checking time v0.1.37
[INFO] [stderr]     Checking cpal v0.4.5
[INFO] [stderr]     Checking synth_exec v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 0.68s
[INFO] running `Command { std: "docker" "inspect" "ec11ed12fa22424dbf509df546dcc7e6fc025f83bbc3853204c85a0bbe750cda", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "ec11ed12fa22424dbf509df546dcc7e6fc025f83bbc3853204c85a0bbe750cda", kill_on_drop: false }`
[INFO] [stdout] ec11ed12fa22424dbf509df546dcc7e6fc025f83bbc3853204c85a0bbe750cda