[INFO] cloning repository https://github.com/rusty-octopus/rfid_media_player
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/rusty-octopus/rfid_media_player" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Frusty-octopus%2Frfid_media_player", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Frusty-octopus%2Frfid_media_player'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] af9b899186e96496dd44afdcfcb981a8e021ee5f
[INFO] checking rusty-octopus/rfid_media_player against master#0599f3403366d9c57f0625e6de3af214b5042a90 for pr-87710
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Frusty-octopus%2Frfid_media_player" "/workspace/builds/worker-12/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-12/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/rusty-octopus/rfid_media_player on toolchain 0599f3403366d9c57f0625e6de3af214b5042a90
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+0599f3403366d9c57f0625e6de3af214b5042a90" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/rusty-octopus/rfid_media_player
[INFO] finished tweaking git repo https://github.com/rusty-octopus/rfid_media_player
[INFO] tweaked toml for git repo https://github.com/rusty-octopus/rfid_media_player written to /workspace/builds/worker-12/source/Cargo.toml
[INFO] crate git repo https://github.com/rusty-octopus/rfid_media_player already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+0599f3403366d9c57f0625e6de3af214b5042a90" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/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" "+0599f3403366d9c57f0625e6de3af214b5042a90" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] e624021cbd29489a4b389042a3ac88a6bfaa5b09932ba2131ea1c14e87c0d5d6
[INFO] running `Command { std: "docker" "start" "-a" "e624021cbd29489a4b389042a3ac88a6bfaa5b09932ba2131ea1c14e87c0d5d6", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "e624021cbd29489a4b389042a3ac88a6bfaa5b09932ba2131ea1c14e87c0d5d6", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "e624021cbd29489a4b389042a3ac88a6bfaa5b09932ba2131ea1c14e87c0d5d6", kill_on_drop: false }`
[INFO] [stdout] e624021cbd29489a4b389042a3ac88a6bfaa5b09932ba2131ea1c14e87c0d5d6
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/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" "+0599f3403366d9c57f0625e6de3af214b5042a90" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 2490d54da62ae702e35cd2f20dd7f6da53f5a467f5b6fa370e488d108e4c6994
[INFO] running `Command { std: "docker" "start" "-a" "2490d54da62ae702e35cd2f20dd7f6da53f5a467f5b6fa370e488d108e4c6994", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.79
[INFO] [stderr]    Compiling pkg-config v0.3.19
[INFO] [stderr]    Compiling cc v1.0.64
[INFO] [stderr]    Compiling proc-macro2 v1.0.24
[INFO] [stderr]    Compiling unicode-xid v0.2.1
[INFO] [stderr]    Compiling syn v1.0.53
[INFO] [stderr]    Compiling cfg-if v1.0.0
[INFO] [stderr]    Compiling bitflags v1.2.1
[INFO] [stderr]    Compiling crc32fast v1.2.1
[INFO] [stderr]     Checking cfg-if v0.1.10
[INFO] [stderr]    Compiling libflate_lz77 v1.0.0
[INFO] [stderr]    Compiling rle-decode-fast v1.0.1
[INFO] [stderr]    Compiling byteorder v1.3.4
[INFO] [stderr]    Compiling adler32 v1.2.0
[INFO] [stderr]    Compiling nix v0.15.0
[INFO] [stderr]     Checking void v1.0.2
[INFO] [stderr]    Compiling cpal v0.13.1
[INFO] [stderr]    Compiling autocfg v1.0.1
[INFO] [stderr]     Checking tinyvec v0.3.4
[INFO] [stderr]    Compiling serde_derive v1.0.117
[INFO] [stderr]     Checking claxon v0.4.3
[INFO] [stderr]     Checking hound v3.4.0
[INFO] [stderr]    Compiling serde v1.0.117
[INFO] [stderr]    Compiling memchr v2.3.4
[INFO] [stderr]     Checking dtoa v0.4.6
[INFO] [stderr]    Compiling log v0.4.11
[INFO] [stderr]     Checking lazy_static v1.4.0
[INFO] [stderr]     Checking unicode-width v0.1.8
[INFO] [stderr]     Checking regex-syntax v0.6.21
[INFO] [stderr]     Checking glob v0.3.0
[INFO] [stderr]     Checking yansi v0.5.0
[INFO] [stderr]     Checking yaml-rust v0.4.4
[INFO] [stderr]     Checking textwrap v0.11.0
[INFO] [stderr]     Checking thread_local v1.0.1
[INFO] [stderr]    Compiling alsa-sys v0.3.0
[INFO] [stderr]    Compiling num-traits v0.2.14
[INFO] [stderr]    Compiling num-integer v0.1.44
[INFO] [stderr]    Compiling minimp3-sys v0.3.2
[INFO] [stderr]     Checking aho-corasick v0.7.15
[INFO] [stderr]     Checking ogg v0.7.1
[INFO] [stderr]    Compiling libflate v1.0.3
[INFO] [stderr]     Checking slice-deque v0.3.0
[INFO] [stderr]     Checking atty v0.2.14
[INFO] [stderr]     Checking time v0.1.44
[INFO] [stderr]     Checking signal-hook-registry v1.3.0
[INFO] [stderr]    Compiling quote v1.0.7
[INFO] [stderr]    Compiling xattr v0.2.2
[INFO] [stderr]    Compiling filetime v0.2.13
[INFO] [stderr]     Checking lewton v0.10.1
[INFO] [stderr]     Checking clap v2.33.3
[INFO] [stderr]     Checking signal-hook v0.3.1
[INFO] [stderr]     Checking regex v1.4.2
[INFO] [stderr]    Compiling tar v0.4.30
[INFO] [stderr]     Checking minimp3 v0.5.0
[INFO] [stderr]    Compiling libusb1-sys v0.4.2
[INFO] [stderr]     Checking chrono v0.4.19
[INFO] [stderr]     Checking rusb v0.6.5
[INFO] [stderr]     Checking alsa v0.4.3
[INFO] [stderr]     Checking rfid_reader v1.0.0 (/opt/rustwide/workdir/rfid_reader)
[INFO] [stderr]     Checking usb_reader_test v0.1.0 (/opt/rustwide/workdir/rfid_reader_test)
[INFO] [stdout] warning: unused variable: `buffer`
[INFO] [stdout]    --> rfid_reader/src/neuftech/usbreader.rs:140:24
[INFO] [stdout]     |
[INFO] [stdout] 140 |         fn read(&self, buffer: &mut [u8]) -> Result<(), Error> {
[INFO] [stdout]     |                        ^^^^^^ help: if this is intentional, prefix it with an underscore: `_buffer`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> rfid_reader/src/neuftech/usbreader.rs:203:13
[INFO] [stdout]     |
[INFO] [stdout] 203 |         let mut dummy_device = ReadErrorHumbleUsbDevice {
[INFO] [stdout]     |             ----^^^^^^^^^^^^
[INFO] [stdout]     |             |
[INFO] [stdout]     |             help: remove this `mut`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_mut)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `Error`
[INFO] [stdout]  --> rfid_reader/examples/print_value.rs:1:25
[INFO] [stdout]   |
[INFO] [stdout] 1 | use rfid_reader::{open, Error, ProductId, RfidReader, VendorId};
[INFO] [stdout]   |                         ^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` 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]   --> rfid_reader/examples/print_value.rs:20:9
[INFO] [stdout]    |
[INFO] [stdout] 20 |         reader.deinitialize();
[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: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]    Compiling thiserror-impl v1.0.22
[INFO] [stderr]     Checking thiserror v1.0.22
[INFO] [stderr]     Checking flexi_logger v0.16.2
[INFO] [stderr]     Checking rodio v0.13.0
[INFO] [stderr]     Checking media_player v1.0.0 (/opt/rustwide/workdir/media_player)
[INFO] [stderr]     Checking media_player_test v0.1.0 (/opt/rustwide/workdir/media_player_test)
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> media_player/src/rodiolib/mod.rs:117:13
[INFO] [stdout]     |
[INFO] [stdout] 117 |         let mut rodio_lib = open().unwrap();
[INFO] [stdout]     |             ----^^^^^^^^^
[INFO] [stdout]     |             |
[INFO] [stdout]     |             help: remove this `mut`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_mut)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Checking serde_yaml v0.8.14
[INFO] [stderr]     Checking track_store v1.0.0 (/opt/rustwide/workdir/track_store)
[INFO] [stdout] warning: unused variable: `value`
[INFO] [stdout]   --> track_store/src/trackstore.rs:97:16
[INFO] [stdout]    |
[INFO] [stdout] 97 |             Ok(value) => assert!(false, "Expected error found value"),
[INFO] [stdout]    |                ^^^^^ help: if this is intentional, prefix it with an underscore: `_value`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Checking rfid_media_player v1.0.0 (/opt/rustwide/workdir/rfid_media_player)
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 56.74s
[INFO] running `Command { std: "docker" "inspect" "2490d54da62ae702e35cd2f20dd7f6da53f5a467f5b6fa370e488d108e4c6994", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "2490d54da62ae702e35cd2f20dd7f6da53f5a467f5b6fa370e488d108e4c6994", kill_on_drop: false }`
[INFO] [stdout] 2490d54da62ae702e35cd2f20dd7f6da53f5a467f5b6fa370e488d108e4c6994