[INFO] fetching crate mod_player 0.1.4...
[INFO] checking mod_player-0.1.4 against 1.55.0 for beta-1.56-3
[INFO] extracting crate mod_player 0.1.4 into /workspace/builds/worker-10/source
[INFO] validating manifest of crates.io crate mod_player 0.1.4 on toolchain 1.55.0
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.55.0" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate mod_player 0.1.4
[INFO] finished tweaking crates.io crate mod_player 0.1.4
[INFO] tweaked toml for crates.io crate mod_player 0.1.4 written to /workspace/builds/worker-10/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.55.0" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.55.0" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-10/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-10/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:a89201d6b5b9fd45c15d5952ece0a0129e7e80cb26ec023fd59cf09bc26f1604" "/opt/rustwide/cargo-home/bin/cargo" "+1.55.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 77e564c9178639991e9e56919fbec3c7e1d58708d4283fec4ce8b2e61abc7e9d
[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" "77e564c9178639991e9e56919fbec3c7e1d58708d4283fec4ce8b2e61abc7e9d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "77e564c9178639991e9e56919fbec3c7e1d58708d4283fec4ce8b2e61abc7e9d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "77e564c9178639991e9e56919fbec3c7e1d58708d4283fec4ce8b2e61abc7e9d", kill_on_drop: false }`
[INFO] [stdout] 77e564c9178639991e9e56919fbec3c7e1d58708d4283fec4ce8b2e61abc7e9d
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-10/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-10/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=warn" "-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:a89201d6b5b9fd45c15d5952ece0a0129e7e80cb26ec023fd59cf09bc26f1604" "/opt/rustwide/cargo-home/bin/cargo" "+1.55.0" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 93c8eb3bb9ad79d1977851daaf9f437a95101ab6832c46c09ee4e72928cf512d
[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" "93c8eb3bb9ad79d1977851daaf9f437a95101ab6832c46c09ee4e72928cf512d", kill_on_drop: false }`
[INFO] [stderr]     Checking mod_player v0.1.4 (/opt/rustwide/workdir)
[INFO] [stderr]     Checking alsa-sys v0.1.2
[INFO] [stdout] warning: panic message is not a string literal
[INFO] [stdout]    --> src/lib.rs:339:33
[INFO] [stdout]     |
[INFO] [stdout] 339 |                       _ => panic!(format!(
[INFO] [stdout]     |  _________________________________^
[INFO] [stdout] 340 | |                         "unhandled extended effect number: {}",
[INFO] [stdout] 341 | |                         extended_effect
[INFO] [stdout] 342 | |                     )),
[INFO] [stdout]     | |_____________________^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(non_fmt_panics)]` on by default
[INFO] [stdout]     = note: this usage of panic!() is deprecated; it will be a hard error in Rust 2021
[INFO] [stdout]     = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/panic-macro-consistency.html>
[INFO] [stdout]     = note: the panic!() macro supports formatting, so there's no need for the format!() macro here
[INFO] [stdout] help: remove the `format!(..)` macro call
[INFO] [stdout]     |
[INFO] [stdout] 339 |                     _ => panic!(
[INFO] [stdout] 340 |                         "unhandled extended effect number: {}",
[INFO] [stdout] 341 |                         extended_effect
[INFO] [stdout] 342 |                     ),
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: panic message is not a string literal
[INFO] [stdout]    --> src/lib.rs:348:25
[INFO] [stdout]     |
[INFO] [stdout] 348 |             _ => panic!(format!("unhandled effect number: {}", effect_number)),
[INFO] [stdout]     |                         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this usage of panic!() is deprecated; it will be a hard error in Rust 2021
[INFO] [stdout]     = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/panic-macro-consistency.html>
[INFO] [stdout]     = note: the panic!() macro supports formatting, so there's no need for the format!() macro here
[INFO] [stdout] help: remove the `format!(..)` macro call
[INFO] [stdout]     |
[INFO] [stdout] 348 |             _ => panic!("unhandled effect number: {}", effect_number),
[INFO] [stdout]     |                        --                                          --
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Checking cpal v0.8.2
[INFO] [stdout] warning: unused import: `std::env`
[INFO] [stdout]  --> src/bin/scan_play.rs:4:5
[INFO] [stdout]   |
[INFO] [stdout] 4 | use std::env;
[INFO] [stdout]   |     ^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable `f` is assigned to, but never used
[INFO] [stdout]   --> src/bin/scan_play.rs:41:17
[INFO] [stdout]    |
[INFO] [stdout] 41 |         let mut f = 0.0;
[INFO] [stdout]    |                 ^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout]    = note: consider using `_f` instead
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::env`
[INFO] [stdout]  --> src/bin/scan_play.rs:4:5
[INFO] [stdout]   |
[INFO] [stdout] 4 | use std::env;
[INFO] [stdout]   |     ^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable `f` is assigned to, but never used
[INFO] [stdout]   --> src/bin/scan_play.rs:41:17
[INFO] [stdout]    |
[INFO] [stdout] 41 |         let mut f = 0.0;
[INFO] [stdout]    |                 ^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout]    = note: consider using `_f` instead
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `Stop`
[INFO] [stdout]  --> examples/streaming_player.rs:7:5
[INFO] [stdout]   |
[INFO] [stdout] 7 |     Stop {},
[INFO] [stdout]   |     ^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]   --> examples/streaming_player.rs:72:9
[INFO] [stdout]    |
[INFO] [stdout] 72 |         std::io::stdin().read_line(&mut command);
[INFO] [stdout]    |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_must_use)]` on by default
[INFO] [stdout]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]   --> examples/convert_to_wav.rs:18:9
[INFO] [stdout]    |
[INFO] [stdout] 18 |         writer.write_sample(left);
[INFO] [stdout]    |         ^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_must_use)]` on by default
[INFO] [stdout]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]   --> examples/convert_to_wav.rs:19:9
[INFO] [stdout]    |
[INFO] [stdout] 19 |         writer.write_sample(right);
[INFO] [stdout]    |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: panic message is not a string literal
[INFO] [stdout]    --> src/lib.rs:339:33
[INFO] [stdout]     |
[INFO] [stdout] 339 |                       _ => panic!(format!(
[INFO] [stdout]     |  _________________________________^
[INFO] [stdout] 340 | |                         "unhandled extended effect number: {}",
[INFO] [stdout] 341 | |                         extended_effect
[INFO] [stdout] 342 | |                     )),
[INFO] [stdout]     | |_____________________^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(non_fmt_panics)]` on by default
[INFO] [stdout]     = note: this usage of panic!() is deprecated; it will be a hard error in Rust 2021
[INFO] [stdout]     = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/panic-macro-consistency.html>
[INFO] [stdout]     = note: the panic!() macro supports formatting, so there's no need for the format!() macro here
[INFO] [stdout] help: remove the `format!(..)` macro call
[INFO] [stdout]     |
[INFO] [stdout] 339 |                     _ => panic!(
[INFO] [stdout] 340 |                         "unhandled extended effect number: {}",
[INFO] [stdout] 341 |                         extended_effect
[INFO] [stdout] 342 |                     ),
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: panic message is not a string literal
[INFO] [stdout]    --> src/lib.rs:348:25
[INFO] [stdout]     |
[INFO] [stdout] 348 |             _ => panic!(format!("unhandled effect number: {}", effect_number)),
[INFO] [stdout]     |                         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this usage of panic!() is deprecated; it will be a hard error in Rust 2021
[INFO] [stdout]     = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/panic-macro-consistency.html>
[INFO] [stdout]     = note: the panic!() macro supports formatting, so there's no need for the format!() macro here
[INFO] [stdout] help: remove the `format!(..)` macro call
[INFO] [stdout]     |
[INFO] [stdout] 348 |             _ => panic!("unhandled effect number: {}", effect_number),
[INFO] [stdout]     |                        --                                          --
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 3.87s
[INFO] running `Command { std: "docker" "inspect" "93c8eb3bb9ad79d1977851daaf9f437a95101ab6832c46c09ee4e72928cf512d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "93c8eb3bb9ad79d1977851daaf9f437a95101ab6832c46c09ee4e72928cf512d", kill_on_drop: false }`
[INFO] [stdout] 93c8eb3bb9ad79d1977851daaf9f437a95101ab6832c46c09ee4e72928cf512d
