[INFO] fetching crate libretro-backend 0.2.1...
[INFO] checking libretro-backend-0.2.1 against master#5a8a44196b3cf099f8c9b0156bd902eaec0b4e5f for pr-87248
[INFO] extracting crate libretro-backend 0.2.1 into /workspace/builds/worker-2/source
[INFO] validating manifest of crates.io crate libretro-backend 0.2.1 on toolchain 5a8a44196b3cf099f8c9b0156bd902eaec0b4e5f
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+5a8a44196b3cf099f8c9b0156bd902eaec0b4e5f" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate libretro-backend 0.2.1
[INFO] finished tweaking crates.io crate libretro-backend 0.2.1
[INFO] tweaked toml for crates.io crate libretro-backend 0.2.1 written to /workspace/builds/worker-2/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+5a8a44196b3cf099f8c9b0156bd902eaec0b4e5f" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+5a8a44196b3cf099f8c9b0156bd902eaec0b4e5f" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded libretro-sys v0.1.1
[INFO] running `Command { std: "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" "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@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+5a8a44196b3cf099f8c9b0156bd902eaec0b4e5f" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 2a98341a5086e4396493ab592fe0396665e03ff7912c8acb9127df6513e16939
[INFO] running `Command { std: "docker" "start" "-a" "2a98341a5086e4396493ab592fe0396665e03ff7912c8acb9127df6513e16939", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "2a98341a5086e4396493ab592fe0396665e03ff7912c8acb9127df6513e16939", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "2a98341a5086e4396493ab592fe0396665e03ff7912c8acb9127df6513e16939", kill_on_drop: false }`
[INFO] [stdout] 2a98341a5086e4396493ab592fe0396665e03ff7912c8acb9127df6513e16939
[INFO] running `Command { std: "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" "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" "ghcr.io/rust-lang/crates-build-env/linux@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+5a8a44196b3cf099f8c9b0156bd902eaec0b4e5f" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] f4dab6c9df47c10a8dd2fcea169ef01d6d099324416909c09d128ab60038726a
[INFO] running `Command { std: "docker" "start" "-a" "f4dab6c9df47c10a8dd2fcea169ef01d6d099324416909c09d128ab60038726a", kill_on_drop: false }`
[INFO] [stderr]     Checking libc v0.2.98
[INFO] [stderr]     Checking libretro-sys v0.1.1
[INFO] [stderr]     Checking libretro-backend v0.2.1 (/opt/rustwide/workdir)
[INFO] [stdout] warning: field is never read: `audio_sample_callback`
[INFO] [stdout]    --> src/lib.rs:211:5
[INFO] [stdout]     |
[INFO] [stdout] 211 |     audio_sample_callback: Option< libretro_sys::AudioSampleFn >,
[INFO] [stdout]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: panic message is not a string literal
[INFO] [stdout]    --> src/lib.rs:413:13
[INFO] [stdout]     |
[INFO] [stdout] 413 |             format!( "You need to upload at least {} audio samples each frame!", required_audio_sample_count_per_frame )
[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 assert!() 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] 413 |              "You need to upload at least {} audio samples each frame!", required_audio_sample_count_per_frame 
[INFO] [stdout]     |            --                                                                                                 --
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `audio_sample_callback`
[INFO] [stdout]    --> src/lib.rs:211:5
[INFO] [stdout]     |
[INFO] [stdout] 211 |     audio_sample_callback: Option< libretro_sys::AudioSampleFn >,
[INFO] [stdout]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: panic message is not a string literal
[INFO] [stdout]    --> src/lib.rs:413:13
[INFO] [stdout]     |
[INFO] [stdout] 413 |             format!( "You need to upload at least {} audio samples each frame!", required_audio_sample_count_per_frame )
[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 assert!() 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] 413 |              "You need to upload at least {} audio samples each frame!", required_audio_sample_count_per_frame 
[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 1.55s
[INFO] running `Command { std: "docker" "inspect" "f4dab6c9df47c10a8dd2fcea169ef01d6d099324416909c09d128ab60038726a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "f4dab6c9df47c10a8dd2fcea169ef01d6d099324416909c09d128ab60038726a", kill_on_drop: false }`
[INFO] [stdout] f4dab6c9df47c10a8dd2fcea169ef01d6d099324416909c09d128ab60038726a