[INFO] fetching crate chord-composer 0.3.1...
[INFO] checking chord-composer-0.3.1 against try#8e3afc79c11f48cb3acd1be5b3b7de98fe3f93a8 for pr-82565
[INFO] extracting crate chord-composer 0.3.1 into /workspace/builds/worker-9/source
[INFO] validating manifest of crates.io crate chord-composer 0.3.1 on toolchain 8e3afc79c11f48cb3acd1be5b3b7de98fe3f93a8
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+8e3afc79c11f48cb3acd1be5b3b7de98fe3f93a8" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate chord-composer 0.3.1
[INFO] finished tweaking crates.io crate chord-composer 0.3.1
[INFO] tweaked toml for crates.io crate chord-composer 0.3.1 written to /workspace/builds/worker-9/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+8e3afc79c11f48cb3acd1be5b3b7de98fe3f93a8" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+8e3afc79c11f48cb3acd1be5b3b7de98fe3f93a8" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded stopwatch v0.0.7
[INFO] [stderr]   Downloaded cpal v0.10.0
[INFO] [stderr]   Downloaded ghakuf v0.5.6
[INFO] [stderr]   Downloaded rodio v0.10.0
[INFO] [stderr]   Downloaded music-timer v0.1.6
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/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:f2f6bcd4b43ebee4e173f653a26493129bdb64017c85f916b780ca7fbdbaa79d" "/opt/rustwide/cargo-home/bin/cargo" "+8e3afc79c11f48cb3acd1be5b3b7de98fe3f93a8" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 15aebb96da21e8dacbfdeaf00314c644e1a347fb255fd2193c779cb101fd05d4
[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" "15aebb96da21e8dacbfdeaf00314c644e1a347fb255fd2193c779cb101fd05d4", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "15aebb96da21e8dacbfdeaf00314c644e1a347fb255fd2193c779cb101fd05d4", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "15aebb96da21e8dacbfdeaf00314c644e1a347fb255fd2193c779cb101fd05d4", kill_on_drop: false }`
[INFO] [stdout] 15aebb96da21e8dacbfdeaf00314c644e1a347fb255fd2193c779cb101fd05d4
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/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:f2f6bcd4b43ebee4e173f653a26493129bdb64017c85f916b780ca7fbdbaa79d" "/opt/rustwide/cargo-home/bin/cargo" "+8e3afc79c11f48cb3acd1be5b3b7de98fe3f93a8" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 455ac8c9b05a4049301d1e00ca876da21e5e6dd1ec23c5a70c3ae72bb88ccee3
[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" "455ac8c9b05a4049301d1e00ca876da21e5e6dd1ec23c5a70c3ae72bb88ccee3", kill_on_drop: false }`
[INFO] [stderr]    Compiling autocfg v1.0.1
[INFO] [stderr]    Compiling proc-macro2 v1.0.24
[INFO] [stderr]    Compiling unicode-xid v0.2.1
[INFO] [stderr]     Checking rustc-serialize v0.3.24
[INFO] [stderr]    Compiling log v0.4.14
[INFO] [stderr]    Compiling cpal v0.10.0
[INFO] [stderr]    Compiling serde v1.0.124
[INFO] [stderr]     Checking lazy_static v1.4.0
[INFO] [stderr]    Compiling serde_derive v1.0.124
[INFO] [stderr]     Checking linked-hash-map v0.5.4
[INFO] [stderr]     Checking claxon v0.4.3
[INFO] [stderr]     Checking dtoa v0.4.7
[INFO] [stderr]     Checking music-timer v0.1.6
[INFO] [stderr]    Compiling alsa-sys v0.1.2
[INFO] [stderr]    Compiling minimp3-sys v0.3.2
[INFO] [stderr]     Checking ogg v0.7.1
[INFO] [stderr]     Checking getrandom v0.1.16
[INFO] [stderr]     Checking slice-deque v0.3.0
[INFO] [stderr]     Checking smallvec v0.6.14
[INFO] [stderr]     Checking yaml-rust v0.4.5
[INFO] [stderr]     Checking rand_core v0.5.1
[INFO] [stderr]     Checking lewton v0.9.4
[INFO] [stderr]     Checking ghakuf v0.5.6
[INFO] [stderr]    Compiling num-traits v0.2.14
[INFO] [stderr]    Compiling num-integer v0.1.44
[INFO] [stderr]    Compiling miniz_oxide v0.4.4
[INFO] [stderr]    Compiling num-iter v0.1.42
[INFO] [stderr]     Checking rand_chacha v0.2.2
[INFO] [stderr]     Checking rand v0.7.3
[INFO] [stderr]     Checking minimp3 v0.3.5
[INFO] [stderr]    Compiling quote v1.0.9
[INFO] [stderr]    Compiling syn v1.0.63
[INFO] [stderr]     Checking backtrace v0.3.56
[INFO] [stderr]     Checking num-complex v0.1.43
[INFO] [stderr]     Checking num-bigint v0.1.44
[INFO] [stderr]     Checking num-rational v0.1.42
[INFO] [stderr]     Checking num v0.1.42
[INFO] [stderr]     Checking stopwatch v0.0.7
[INFO] [stderr]    Compiling synstructure v0.12.4
[INFO] [stderr]     Checking serde_yaml v0.8.17
[INFO] [stderr]    Compiling failure_derive v0.1.8
[INFO] [stderr]     Checking failure v0.1.8
[INFO] [stderr]     Checking rodio v0.10.0
[INFO] [stderr]     Checking chord-composer v0.3.1 (/opt/rustwide/workdir)
[INFO] [stdout] warning: panic message is not a string literal
[INFO] [stdout]    --> src/lib.rs:890:27
[INFO] [stdout]     |
[INFO] [stdout] 890 |       _ => assert!(false, true),
[INFO] [stdout]     |                           ^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(non_fmt_panic)]` on by default
[INFO] [stdout]     = note: this is no longer accepted in Rust 2021
[INFO] [stdout] help: add a "{}" format string to Display the message
[INFO] [stdout]     |
[INFO] [stdout] 890 |       _ => assert!(false, "{}", true),
[INFO] [stdout]     |                           ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: panic message is not a string literal
[INFO] [stdout]    --> src/lib.rs:913:27
[INFO] [stdout]     |
[INFO] [stdout] 913 |       _ => assert!(false, true),
[INFO] [stdout]     |                           ^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this is no longer accepted in Rust 2021
[INFO] [stdout] help: add a "{}" format string to Display the message
[INFO] [stdout]     |
[INFO] [stdout] 913 |       _ => assert!(false, "{}", true),
[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 50.31s
[INFO] running `Command { std: "docker" "inspect" "455ac8c9b05a4049301d1e00ca876da21e5e6dd1ec23c5a70c3ae72bb88ccee3", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "455ac8c9b05a4049301d1e00ca876da21e5e6dd1ec23c5a70c3ae72bb88ccee3", kill_on_drop: false }`
[INFO] [stdout] 455ac8c9b05a4049301d1e00ca876da21e5e6dd1ec23c5a70c3ae72bb88ccee3