[INFO] cloning repository https://github.com/audiocogs/mp3.rs
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/audiocogs/mp3.rs" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Faudiocogs%2Fmp3.rs", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Faudiocogs%2Fmp3.rs'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 407184f0ad208eceedbeb578340a0fe76f681af5
[INFO] checking audiocogs/mp3.rs against master#0dce3f606e05cffab7361c132a399d3550ab0df8 for pr-78376
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Faudiocogs%2Fmp3.rs" "/workspace/builds/worker-0/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-0/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/audiocogs/mp3.rs on toolchain 0dce3f606e05cffab7361c132a399d3550ab0df8
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+0dce3f606e05cffab7361c132a399d3550ab0df8" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/audiocogs/mp3.rs
[INFO] finished tweaking git repo https://github.com/audiocogs/mp3.rs
[INFO] tweaked toml for git repo https://github.com/audiocogs/mp3.rs written to /workspace/builds/worker-0/source/Cargo.toml
[INFO] crate git repo https://github.com/audiocogs/mp3.rs already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+0dce3f606e05cffab7361c132a399d3550ab0df8" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr] error: the lock file /workspace/builds/worker-0/source/Cargo.lock needs to be updated but --locked was passed to prevent this
[INFO] [stderr] If you want to try to generate the lock file without accessing the network, use the --offline flag.
[INFO] the lockfile is outdated, regenerating it
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+0dce3f606e05cffab7361c132a399d3550ab0df8" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+0dce3f606e05cffab7361c132a399d3550ab0df8" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/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:d92eaeed33fa75130ca1ee6c8a01d1ffb62bac859dfdfb3450e3e5d1c0146529" "/opt/rustwide/cargo-home/bin/cargo" "+0dce3f606e05cffab7361c132a399d3550ab0df8" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] 97626eb39522381209fa6a0e807df77b8227ec9e4eb257590de360472c700af2
[INFO] running `Command { std: "docker" "start" "-a" "97626eb39522381209fa6a0e807df77b8227ec9e4eb257590de360472c700af2", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "97626eb39522381209fa6a0e807df77b8227ec9e4eb257590de360472c700af2", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "97626eb39522381209fa6a0e807df77b8227ec9e4eb257590de360472c700af2", kill_on_drop: false }`
[INFO] [stdout] 97626eb39522381209fa6a0e807df77b8227ec9e4eb257590de360472c700af2
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/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:d92eaeed33fa75130ca1ee6c8a01d1ffb62bac859dfdfb3450e3e5d1c0146529" "/opt/rustwide/cargo-home/bin/cargo" "+0dce3f606e05cffab7361c132a399d3550ab0df8" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 77b1d5c9cdf4474193b273e401962e7b7ddcf5aa61dd40463157dc89ec75a8ae
[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" "77b1d5c9cdf4474193b273e401962e7b7ddcf5aa61dd40463157dc89ec75a8ae", kill_on_drop: false }`
[INFO] [stderr]     Checking mp3 v0.0.1 (/opt/rustwide/workdir)
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/frame.rs:12:33
[INFO] [stdout]    |
[INFO] [stdout] 12 |   pub fn read_from(reader: &mut peeker::Peeker) -> io::Result<Option<MpegFrame>> {
[INFO] [stdout]    |                                 ^^^^^^^^^^^^^^ help: use `dyn`: `dyn peeker::Peeker`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(bare_trait_objects)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/header.rs:195:33
[INFO] [stdout]     |
[INFO] [stdout] 195 |   pub fn read_from(reader: &mut Peeker) -> io::Result<Option<Header>> {
[INFO] [stdout]     |                                 ^^^^^^ help: use `dyn`: `dyn Peeker`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::io::Cursor`
[INFO] [stdout]  --> src/peeker.rs:3:5
[INFO] [stdout]   |
[INFO] [stdout] 3 | use std::io::Cursor;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::io::Cursor`
[INFO] [stdout]  --> src/bitreader.rs:2:5
[INFO] [stdout]   |
[INFO] [stdout] 2 | use std::io::Cursor;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::io::SeekFrom`
[INFO] [stdout]  --> src/bitreader.rs:3:5
[INFO] [stdout]   |
[INFO] [stdout] 3 | use std::io::SeekFrom;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]  --> src/bitreader.rs:8:20
[INFO] [stdout]   |
[INFO] [stdout] 8 |   reader: &'a mut (io::Read + 'a)
[INFO] [stdout]   |                    ^^^^^^^^^^^^^ help: use `dyn`: `dyn io::Read + 'a`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/bitreader.rs:12:30
[INFO] [stdout]    |
[INFO] [stdout] 12 |   pub fn new(reader: &'a mut io::Read) -> BitReader<'a> {
[INFO] [stdout]    |                              ^^^^^^^^ help: use `dyn`: `dyn io::Read`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around `for` iterator expression
[INFO] [stdout]   --> src/bitreader.rs:19:14
[INFO] [stdout]    |
[INFO] [stdout] 19 |     for _ in (0..n) {
[INFO] [stdout]    |              ^^^^^^ help: remove these parentheses
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_parens)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::io`
[INFO] [stdout]  --> src/layer1.rs:1:5
[INFO] [stdout]   |
[INFO] [stdout] 1 | use std::io;
[INFO] [stdout]   |     ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::io::Cursor`
[INFO] [stdout]  --> src/layer1.rs:2:5
[INFO] [stdout]   |
[INFO] [stdout] 2 | use std::io::Cursor;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/frame.rs:12:33
[INFO] [stdout]    |
[INFO] [stdout] 12 |   pub fn read_from(reader: &mut peeker::Peeker) -> io::Result<Option<MpegFrame>> {
[INFO] [stdout]    |                                 ^^^^^^^^^^^^^^ help: use `dyn`: `dyn peeker::Peeker`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(bare_trait_objects)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/header.rs:195:33
[INFO] [stdout]     |
[INFO] [stdout] 195 |   pub fn read_from(reader: &mut Peeker) -> io::Result<Option<Header>> {
[INFO] [stdout]     |                                 ^^^^^^ help: use `dyn`: `dyn Peeker`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/peeker.rs:33:38
[INFO] [stdout]    |
[INFO] [stdout] 33 |   let mut pkr = Box::new(buf) as Box<Peeker>;
[INFO] [stdout]    |                                      ^^^^^^ help: use `dyn`: `dyn Peeker`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/peeker.rs:41:38
[INFO] [stdout]    |
[INFO] [stdout] 41 |   let mut pkr = Box::new(buf) as Box<Peeker>;
[INFO] [stdout]    |                                      ^^^^^^ help: use `dyn`: `dyn Peeker`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::io::SeekFrom`
[INFO] [stdout]  --> src/bitreader.rs:3:5
[INFO] [stdout]   |
[INFO] [stdout] 3 | use std::io::SeekFrom;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]  --> src/bitreader.rs:8:20
[INFO] [stdout]   |
[INFO] [stdout] 8 |   reader: &'a mut (io::Read + 'a)
[INFO] [stdout]   |                    ^^^^^^^^^^^^^ help: use `dyn`: `dyn io::Read + 'a`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/bitreader.rs:12:30
[INFO] [stdout]    |
[INFO] [stdout] 12 |   pub fn new(reader: &'a mut io::Read) -> BitReader<'a> {
[INFO] [stdout]    |                              ^^^^^^^^ help: use `dyn`: `dyn io::Read`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around `for` iterator expression
[INFO] [stdout]   --> src/bitreader.rs:19:14
[INFO] [stdout]    |
[INFO] [stdout] 19 |     for _ in (0..n) {
[INFO] [stdout]    |              ^^^^^^ help: remove these parentheses
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_parens)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::io::Seek`
[INFO] [stdout]  --> src/peeker.rs:2:5
[INFO] [stdout]   |
[INFO] [stdout] 2 | use std::io::Seek;
[INFO] [stdout]   |     ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `samples`
[INFO] [stdout]   --> src/main.rs:26:15
[INFO] [stdout]    |
[INFO] [stdout] 26 |           let samples = layer1::decode_layer1(&mut reader, h.header);
[INFO] [stdout]    |               ^^^^^^^ help: if this is intentional, prefix it with an underscore: `_samples`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 12 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::io::Seek`
[INFO] [stdout]  --> src/peeker.rs:2:5
[INFO] [stdout]   |
[INFO] [stdout] 2 | use std::io::Seek;
[INFO] [stdout]   |     ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `samples`
[INFO] [stdout]   --> src/main.rs:26:15
[INFO] [stdout]    |
[INFO] [stdout] 26 |           let samples = layer1::decode_layer1(&mut reader, h.header);
[INFO] [stdout]    |               ^^^^^^^ help: if this is intentional, prefix it with an underscore: `_samples`
[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]   --> src/peeker.rs:32:7
[INFO] [stdout]    |
[INFO] [stdout] 32 |   let mut buf = Cursor::new(vec![0xFFu8, 0xAA, 0x44, 0xA3]);
[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: variable does not need to be mutable
[INFO] [stdout]   --> src/peeker.rs:40:7
[INFO] [stdout]    |
[INFO] [stdout] 40 |   let mut buf = Cursor::new(vec![0xFFu8, 0xAA, 0x44, 0xA3, 0x34, 0x99, 0x44]);
[INFO] [stdout]    |       ----^^^
[INFO] [stdout]    |       |
[INFO] [stdout]    |       help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 12 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1.44s
[INFO] running `Command { std: "docker" "inspect" "77b1d5c9cdf4474193b273e401962e7b7ddcf5aa61dd40463157dc89ec75a8ae", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "77b1d5c9cdf4474193b273e401962e7b7ddcf5aa61dd40463157dc89ec75a8ae", kill_on_drop: false }`
[INFO] [stdout] 77b1d5c9cdf4474193b273e401962e7b7ddcf5aa61dd40463157dc89ec75a8ae