[INFO] crate monotron-synth 0.2.0 is already in cache
[INFO] testing monotron-synth-0.2.0 against try#41997647ba6a77908f6ef64401414feb00bccf16 for pr-71274
[INFO] extracting crate monotron-synth 0.2.0 into /workspace/builds/worker-2/source
[INFO] validating manifest of crates.io crate monotron-synth 0.2.0 on toolchain 41997647ba6a77908f6ef64401414feb00bccf16
[INFO] running `"/workspace/cargo-home/bin/cargo" "+41997647ba6a77908f6ef64401414feb00bccf16" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started tweaking crates.io crate monotron-synth 0.2.0
[INFO] finished tweaking crates.io crate monotron-synth 0.2.0
[INFO] tweaked toml for crates.io crate monotron-synth 0.2.0 written to /workspace/builds/worker-2/source/Cargo.toml
[INFO] running `"/workspace/cargo-home/bin/cargo" "+41997647ba6a77908f6ef64401414feb00bccf16" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"`
[INFO] running `"/workspace/cargo-home/bin/cargo" "+41997647ba6a77908f6ef64401414feb00bccf16" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded libpulse-simple-binding v2.16.0
[INFO] running `"docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/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" "MAP_USER_ID=0" "-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" "--network" "none" "rustops/crates-build-env" "/opt/rustwide/cargo-home/bin/cargo" "+41997647ba6a77908f6ef64401414feb00bccf16" "build" "--frozen"`
[INFO] [stdout] c98230f3c192480d2d640532efc8310a9f66be17a0e0253d13b0cec853973e16
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `"docker" "start" "-a" "c98230f3c192480d2d640532efc8310a9f66be17a0e0253d13b0cec853973e16"`
[INFO] [stderr]    Compiling monotron-synth v0.2.0 (/opt/rustwide/workdir)
[INFO] [stderr] warning: unnecessary parentheses around block return value
[INFO] [stderr]    --> src/lib.rs:359:9
[INFO] [stderr]     |
[INFO] [stderr] 359 |         (intermediate as u8)
[INFO] [stderr]     |         ^^^^^^^^^^^^^^^^^^^^ help: remove these parentheses
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(unused_parens)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: 1 warning emitted
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.52s
[INFO] running `"docker" "inspect" "c98230f3c192480d2d640532efc8310a9f66be17a0e0253d13b0cec853973e16"`
[INFO] running `"docker" "rm" "-f" "c98230f3c192480d2d640532efc8310a9f66be17a0e0253d13b0cec853973e16"`
[INFO] [stdout] c98230f3c192480d2d640532efc8310a9f66be17a0e0253d13b0cec853973e16
[INFO] running `"docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/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" "MAP_USER_ID=0" "-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" "--network" "none" "rustops/crates-build-env" "/opt/rustwide/cargo-home/bin/cargo" "+41997647ba6a77908f6ef64401414feb00bccf16" "test" "--frozen" "--no-run"`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] 70064349d6ee14586f3a2a0bb930e5e289b9a252edda085ba9b84267c1905971
[INFO] running `"docker" "start" "-a" "70064349d6ee14586f3a2a0bb930e5e289b9a252edda085ba9b84267c1905971"`
[INFO] [stderr]    Compiling libc v0.2.69
[INFO] [stderr]    Compiling libpulse-sys v1.13.0
[INFO] [stderr]    Compiling libpulse-simple-sys v1.13.0
[INFO] [stderr] warning: unnecessary parentheses around block return value
[INFO] [stderr]    --> src/lib.rs:359:9
[INFO] [stderr]     |
[INFO] [stderr] 359 |         (intermediate as u8)
[INFO] [stderr]     |         ^^^^^^^^^^^^^^^^^^^^ help: remove these parentheses
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(unused_parens)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: 1 warning emitted
[INFO] [stderr] 
[INFO] [stderr]    Compiling libpulse-binding v2.16.0
[INFO] [stderr]    Compiling libpulse-simple-binding v2.16.0
[INFO] [stderr]    Compiling monotron-synth v0.2.0 (/opt/rustwide/workdir)
[INFO] [stderr] warning: unnecessary parentheses around block return value
[INFO] [stderr]    --> src/lib.rs:359:9
[INFO] [stderr]     |
[INFO] [stderr] 359 |         (intermediate as u8)
[INFO] [stderr]     |         ^^^^^^^^^^^^^^^^^^^^ help: remove these parentheses
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(unused_parens)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: 1 warning emitted
[INFO] [stderr] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 10.70s
[INFO] running `"docker" "inspect" "70064349d6ee14586f3a2a0bb930e5e289b9a252edda085ba9b84267c1905971"`
[INFO] running `"docker" "rm" "-f" "70064349d6ee14586f3a2a0bb930e5e289b9a252edda085ba9b84267c1905971"`
[INFO] [stdout] 70064349d6ee14586f3a2a0bb930e5e289b9a252edda085ba9b84267c1905971
[INFO] running `"docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/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" "MAP_USER_ID=0" "-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" "--network" "none" "rustops/crates-build-env" "/opt/rustwide/cargo-home/bin/cargo" "+41997647ba6a77908f6ef64401414feb00bccf16" "test" "--frozen"`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] 8fe642c932544032d5b48b929c486419d6dd7f8c42ed85b885d19ed6277a0ae8
[INFO] running `"docker" "start" "-a" "8fe642c932544032d5b48b929c486419d6dd7f8c42ed85b885d19ed6277a0ae8"`
[INFO] [stderr] warning: unnecessary parentheses around block return value
[INFO] [stderr]    --> src/lib.rs:359:9
[INFO] [stderr]     |
[INFO] [stderr] 359 |         (intermediate as u8)
[INFO] [stderr]     |         ^^^^^^^^^^^^^^^^^^^^ help: remove these parentheses
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(unused_parens)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: 1 warning emitted
[INFO] [stderr] 
[INFO] [stderr] warning: unnecessary parentheses around block return value
[INFO] [stderr]    --> src/lib.rs:359:9
[INFO] [stderr]     |
[INFO] [stderr] 359 |         (intermediate as u8)
[INFO] [stderr]     |         ^^^^^^^^^^^^^^^^^^^^ help: remove these parentheses
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(unused_parens)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: 1 warning emitted
[INFO] [stderr] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.15s
[INFO] [stderr]      Running /opt/rustwide/target/debug/deps/monotron_synth-b63697fa39cf41e5
[INFO] [stdout] 
[INFO] [stdout] running 0 tests
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
[INFO] [stdout] 
[INFO] [stderr]    Doc-tests monotron-synth
[INFO] [stdout] 
[INFO] [stdout] running 0 tests
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
[INFO] [stdout] 
[INFO] running `"docker" "inspect" "8fe642c932544032d5b48b929c486419d6dd7f8c42ed85b885d19ed6277a0ae8"`
[INFO] running `"docker" "rm" "-f" "8fe642c932544032d5b48b929c486419d6dd7f8c42ed85b885d19ed6277a0ae8"`
[INFO] [stdout] 8fe642c932544032d5b48b929c486419d6dd7f8c42ed85b885d19ed6277a0ae8