[INFO] fetching crate rsynth 0.1.0...
[INFO] checking rsynth-0.1.0 against master#5e3f1b148db5bfa27fee52464ae1f5d34c49d77b for pr-75502
[INFO] extracting crate rsynth 0.1.0 into /workspace/builds/worker-14/source
[INFO] validating manifest of crates.io crate rsynth 0.1.0 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 crates.io crate rsynth 0.1.0
[INFO] removed 0 missing examples
[INFO] finished tweaking crates.io crate rsynth 0.1.0
[INFO] tweaked toml for crates.io crate rsynth 0.1.0 written to /workspace/builds/worker-14/source/Cargo.toml
[INFO] crate crates.io crate rsynth 0.1.0 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] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-14/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-14/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] 8efeb953a035b2c46556e1fadc02050b2c270242b71fae8501525919e4141eb3
[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" "8efeb953a035b2c46556e1fadc02050b2c270242b71fae8501525919e4141eb3", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "8efeb953a035b2c46556e1fadc02050b2c270242b71fae8501525919e4141eb3", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "8efeb953a035b2c46556e1fadc02050b2c270242b71fae8501525919e4141eb3", kill_on_drop: false }`
[INFO] [stdout] 8efeb953a035b2c46556e1fadc02050b2c270242b71fae8501525919e4141eb3
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-14/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-14/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] b47b7ec354496642c7c1e3989f64f5738729e8be1280237dbfb74689d327c912
[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" "b47b7ec354496642c7c1e3989f64f5738729e8be1280237dbfb74689d327c912", kill_on_drop: false }`
[INFO] [stderr]    Compiling log v0.4.8
[INFO] [stderr]    Compiling doc-comment v0.3.3
[INFO] [stderr]     Checking cfg-if v0.1.10
[INFO] [stderr]     Checking midi-consts v0.1.0
[INFO] [stderr]     Checking vecstorage v0.1.0
[INFO] [stderr]     Checking asprim v0.2.0
[INFO] [stderr]     Checking rand v0.4.6
[INFO] [stderr]     Checking rsynth v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused `#[macro_use]` import
[INFO] [stdout]   --> src/lib.rs:96:1
[INFO] [stdout]    |
[INFO] [stdout] 96 | #[macro_use]
[INFO] [stdout]    | ^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Checking rand v0.3.23
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `#[macro_use]` import
[INFO] [stdout]   --> src/lib.rs:96:1
[INFO] [stdout]    |
[INFO] [stdout] 96 | #[macro_use]
[INFO] [stdout]    | ^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `test_synth::*`
[INFO] [stdout]   --> examples/jack_synth.rs:61:5
[INFO] [stdout]    |
[INFO] [stdout] 61 | use test_synth::*;
[INFO] [stdout]    |     ^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: static is never used: `SAMPLE_SIZE`
[INFO] [stdout]   --> examples/test_synth.rs:25:1
[INFO] [stdout]    |
[INFO] [stdout] 25 | static SAMPLE_SIZE: usize = 65536;
[INFO] [stdout]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `new`
[INFO] [stdout]   --> examples/test_synth.rs:42:8
[INFO] [stdout]    |
[INFO] [stdout] 42 |     fn new(sample_size: usize) -> Self {
[INFO] [stdout]    |        ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `meta_data`
[INFO] [stdout]    --> examples/test_synth.rs:118:8
[INFO] [stdout]     |
[INFO] [stdout] 118 |     fn meta_data() -> MetaData<&'static str, &'static str, &'static str> {
[INFO] [stdout]     |        ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `new`
[INFO] [stdout]    --> examples/test_synth.rs:131:12
[INFO] [stdout]     |
[INFO] [stdout] 131 |     pub fn new() -> Self {
[INFO] [stdout]     |            ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 5 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `#[macro_use]` import
[INFO] [stdout]   --> examples/vst_synth.rs:48:1
[INFO] [stdout]    |
[INFO] [stdout] 48 | #[macro_use]
[INFO] [stdout]    | ^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `test_synth::*`
[INFO] [stdout]   --> examples/vst_synth.rs:52:5
[INFO] [stdout]    |
[INFO] [stdout] 52 | use test_synth::*;
[INFO] [stdout]    |     ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: static is never used: `SAMPLE_SIZE`
[INFO] [stdout]   --> examples/test_synth.rs:25:1
[INFO] [stdout]    |
[INFO] [stdout] 25 | static SAMPLE_SIZE: usize = 65536;
[INFO] [stdout]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `new`
[INFO] [stdout]   --> examples/test_synth.rs:42:8
[INFO] [stdout]    |
[INFO] [stdout] 42 |     fn new(sample_size: usize) -> Self {
[INFO] [stdout]    |        ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `meta_data`
[INFO] [stdout]    --> examples/test_synth.rs:118:8
[INFO] [stdout]     |
[INFO] [stdout] 118 |     fn meta_data() -> MetaData<&'static str, &'static str, &'static str> {
[INFO] [stdout]     |        ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `new`
[INFO] [stdout]    --> examples/test_synth.rs:131:12
[INFO] [stdout]     |
[INFO] [stdout] 131 |     pub fn new() -> Self {
[INFO] [stdout]     |            ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 6 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 5.56s
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "b47b7ec354496642c7c1e3989f64f5738729e8be1280237dbfb74689d327c912", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "b47b7ec354496642c7c1e3989f64f5738729e8be1280237dbfb74689d327c912", kill_on_drop: false }`
[INFO] [stdout] b47b7ec354496642c7c1e3989f64f5738729e8be1280237dbfb74689d327c912