[INFO] cloning repository https://github.com/gyng/midi-to-wav
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/gyng/midi-to-wav" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fgyng%2Fmidi-to-wav", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fgyng%2Fmidi-to-wav'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 8a7e02bf9404ecc08e20efeb69d41aff5206029c
[INFO] checking gyng/midi-to-wav against master#5e3f1b148db5bfa27fee52464ae1f5d34c49d77b for pr-75502
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fgyng%2Fmidi-to-wav" "/workspace/builds/worker-4/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-4/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/gyng/midi-to-wav on toolchain 5e3f1b148db5bfa27fee52464ae1f5d34c49d77b
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+5e3f1b148db5bfa27fee52464ae1f5d34c49d77b" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/gyng/midi-to-wav
[INFO] finished tweaking git repo https://github.com/gyng/midi-to-wav
[INFO] tweaked toml for git repo https://github.com/gyng/midi-to-wav written to /workspace/builds/worker-4/source/Cargo.toml
[INFO] crate git repo https://github.com/gyng/midi-to-wav already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+5e3f1b148db5bfa27fee52464ae1f5d34c49d77b" "fetch" "--locked" "--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] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/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" "rustops/crates-build-env@sha256:a636fd89d022f18117e1dc8fb37a0a009933cdbbe082814857f0e2024962d47c" "/opt/rustwide/cargo-home/bin/cargo" "+5e3f1b148db5bfa27fee52464ae1f5d34c49d77b" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 787d3eaad700f012449edee05fe55436115bd7006fc9302cd1a86e78a33e70ee
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "787d3eaad700f012449edee05fe55436115bd7006fc9302cd1a86e78a33e70ee", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "787d3eaad700f012449edee05fe55436115bd7006fc9302cd1a86e78a33e70ee", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "787d3eaad700f012449edee05fe55436115bd7006fc9302cd1a86e78a33e70ee", kill_on_drop: false }`
[INFO] [stdout] 787d3eaad700f012449edee05fe55436115bd7006fc9302cd1a86e78a33e70ee
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/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" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "rustops/crates-build-env@sha256:a636fd89d022f18117e1dc8fb37a0a009933cdbbe082814857f0e2024962d47c" "/opt/rustwide/cargo-home/bin/cargo" "+5e3f1b148db5bfa27fee52464ae1f5d34c49d77b" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 0af32f56766ecc8823fd0af45ebad7ceede7ac9fd91099424430a40dc42acb5f
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "0af32f56766ecc8823fd0af45ebad7ceede7ac9fd91099424430a40dc42acb5f", 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]    Compiling num-traits v0.2.6
[INFO] [stderr]    Compiling num-integer v0.1.39
[INFO] [stderr]    Compiling num-complex v0.2.1
[INFO] [stderr]    Compiling regex v1.0.5
[INFO] [stderr]     Checking ucd-util v0.1.2
[INFO] [stderr]     Checking utf8-ranges v1.0.2
[INFO] [stderr]    Compiling memchr v2.1.1
[INFO] [stderr]    Compiling lazy_static v1.1.0
[INFO] [stderr]     Checking rand v0.5.5
[INFO] [stderr]    Compiling proc-macro2 v0.4.20
[INFO] [stderr]     Checking regex-syntax v0.6.2
[INFO] [stderr]    Compiling quote v0.6.9
[INFO] [stderr]     Checking thread_local v0.3.6
[INFO] [stderr]    Compiling syn v0.15.18
[INFO] [stderr]     Checking aho-corasick v0.6.9
[INFO] [stderr]     Checking num-bigint v0.2.1
[INFO] [stderr]     Checking num-iter v0.1.37
[INFO] [stderr]     Checking num-rational v0.2.1
[INFO] [stderr]     Checking num v0.2.0
[INFO] [stderr]     Checking synthrs v0.1.0 (https://github.com/gyng/synthrs?rev=9e9724c2a970c1da15147c4ff603c7d24c258abc#9e9724c2)
[INFO] [stderr]    Compiling serde_derive v1.0.80
[INFO] [stderr]     Checking docopt v1.0.2
[INFO] [stderr]     Checking midi-to-wav v0.0.1 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 43.17s
[INFO] running `Command { std: "docker" "inspect" "0af32f56766ecc8823fd0af45ebad7ceede7ac9fd91099424430a40dc42acb5f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "0af32f56766ecc8823fd0af45ebad7ceede7ac9fd91099424430a40dc42acb5f", kill_on_drop: false }`
[INFO] [stdout] 0af32f56766ecc8823fd0af45ebad7ceede7ac9fd91099424430a40dc42acb5f