[INFO] fetching crate vapor-parser 0.1.0...
[INFO] checking vapor-parser-0.1.0 against try#4f260f0f20b3133d20cfb50353c0221943af5796+rustflags=-Dunmustuse_in_always_ok for pr-148577
[INFO] extracting crate vapor-parser 0.1.0 into /workspace/builds/worker-5-tc2/source
[INFO] started tweaking crates.io crate vapor-parser 0.1.0
[INFO] finished tweaking crates.io crate vapor-parser 0.1.0
[INFO] tweaked toml for crates.io crate vapor-parser 0.1.0 written to /workspace/builds/worker-5-tc2/source/Cargo.toml
[INFO] validating manifest of crates.io crate vapor-parser 0.1.0 on toolchain 4f260f0f20b3133d20cfb50353c0221943af5796
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+4f260f0f20b3133d20cfb50353c0221943af5796" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+4f260f0f20b3133d20cfb50353c0221943af5796" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]      Locking 33 packages to latest compatible versions
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+4f260f0f20b3133d20cfb50353c0221943af5796" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc2/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@sha256:4848fb76d95f26979359cc7e45710b1dbc8f3acb7aeedee7c460d7702230f228" "/opt/rustwide/cargo-home/bin/cargo" "+4f260f0f20b3133d20cfb50353c0221943af5796" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 9b804dca6c42d790a6ddfd734ab26c4d8da7ca8073a726e506b3238876132a19
[INFO] running `Command { std: "docker" "start" "-a" "9b804dca6c42d790a6ddfd734ab26c4d8da7ca8073a726e506b3238876132a19", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "9b804dca6c42d790a6ddfd734ab26c4d8da7ca8073a726e506b3238876132a19", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "9b804dca6c42d790a6ddfd734ab26c4d8da7ca8073a726e506b3238876132a19", kill_on_drop: false }`
[INFO] [stdout] 9b804dca6c42d790a6ddfd734ab26c4d8da7ca8073a726e506b3238876132a19
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc2/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 -Dunmustuse_in_always_ok" "-e" "RUSTDOCFLAGS=--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@sha256:4848fb76d95f26979359cc7e45710b1dbc8f3acb7aeedee7c460d7702230f228" "/opt/rustwide/cargo-home/bin/cargo" "+4f260f0f20b3133d20cfb50353c0221943af5796" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 3e605e7b6fea206c39da690a74e61b84ae39f3b563275248906e236e6961b170
[INFO] running `Command { std: "docker" "start" "-a" "3e605e7b6fea206c39da690a74e61b84ae39f3b563275248906e236e6961b170", kill_on_drop: false }`
[INFO] [stderr]    Compiling tokio-macros v2.6.0
[INFO] [stderr]     Checking tokio v1.48.0
[INFO] [stderr]     Checking vapor-parser v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused variable: `footer_size`
[INFO] [stdout]   --> src/id3v2/mod.rs:67:9
[INFO] [stdout]    |
[INFO] [stdout] 67 |     let footer_size: u64 = if footer { 10 } else { 0 };
[INFO] [stdout]    |         ^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_footer_size`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `AudioFramesIndexItem` is never constructed
[INFO] [stdout]   --> src/analyser/mod.rs:24:12
[INFO] [stdout]    |
[INFO] [stdout] 24 | pub struct AudioFramesIndexItem {
[INFO] [stdout]    |            ^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Analysis` is never constructed
[INFO] [stdout]   --> src/analyser/mod.rs:36:12
[INFO] [stdout]    |
[INFO] [stdout] 36 | pub struct Analysis {
[INFO] [stdout]    |            ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `compute_frame_index` is never used
[INFO] [stdout]    --> src/frames/utils.rs:400:8
[INFO] [stdout]     |
[INFO] [stdout] 400 | pub fn compute_frame_index(audio_frames: &Vec<AudioFrame>) -> Vec<(Duration, u64)> {
[INFO] [stdout]     |        ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `get_offset_for_time` is never used
[INFO] [stdout]    --> src/frames/utils.rs:416:8
[INFO] [stdout]     |
[INFO] [stdout] 416 | pub fn get_offset_for_time(frame_index: &Vec<(Duration, u64)>, time: Duration) -> u64 {
[INFO] [stdout]     |        ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `is_id3v1_tag` is never used
[INFO] [stdout]   --> src/id3v1/mod.rs:53:8
[INFO] [stdout]    |
[INFO] [stdout] 53 | pub fn is_id3v1_tag(buffer: &[u8]) -> bool {
[INFO] [stdout]    |        ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `decode` is never used
[INFO] [stdout]   --> src/id3v1/mod.rs:60:8
[INFO] [stdout]    |
[INFO] [stdout] 60 | pub fn decode(buffer: &[u8; ID3V1_HEADER_SIZE]) -> Result<ID3V1Tag> {
[INFO] [stdout]    |        ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: fields `unsynchronisation`, `extended_header`, `experimental`, and `footer` are never read
[INFO] [stdout]   --> src/id3v2/mod.rs:7:5
[INFO] [stdout]    |
[INFO] [stdout]  6 | pub struct ID3V2Flags {
[INFO] [stdout]    |            ---------- fields in this struct
[INFO] [stdout]  7 |     unsynchronisation: bool,
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^
[INFO] [stdout]  8 |     extended_header: bool,
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^
[INFO] [stdout]  9 |     experimental: bool,
[INFO] [stdout]    |     ^^^^^^^^^^^^
[INFO] [stdout] 10 |     footer: bool,
[INFO] [stdout]    |     ^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `ID3V2Flags` has derived impls for the traits `Clone` and `Debug`, but these are intentionally ignored during dead code analysis
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `is_id3v2_tag` is never used
[INFO] [stdout]   --> src/id3v2/mod.rs:27:8
[INFO] [stdout]    |
[INFO] [stdout] 27 | pub fn is_id3v2_tag(buffer: &[u8]) -> bool {
[INFO] [stdout]    |        ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `decode_header` is never used
[INFO] [stdout]   --> src/id3v2/mod.rs:34:8
[INFO] [stdout]    |
[INFO] [stdout] 34 | pub fn decode_header(buffer: &[u8; ID3V2_HEADER_SIZE]) -> Result<ID3V2TagHeader> {
[INFO] [stdout]    |        ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `is_valid_key_character` is never used
[INFO] [stdout]   --> src/id3v2/mod.rs:82:8
[INFO] [stdout]    |
[INFO] [stdout] 82 | pub fn is_valid_key_character(c: char) -> bool {
[INFO] [stdout]    |        ^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `decode_frames` is never used
[INFO] [stdout]   --> src/id3v2/mod.rs:86:14
[INFO] [stdout]    |
[INFO] [stdout] 86 | pub async fn decode_frames(buffer: &[u8]) -> Result<HashMap<String, String>> {
[INFO] [stdout]    |              ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant `TAGS` is never used
[INFO] [stdout]  --> src/id3v2/tags.rs:1:11
[INFO] [stdout]   |
[INFO] [stdout] 1 | pub const TAGS: [&str; 84] = [
[INFO] [stdout]   |           ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant `ID3V2_HEADER_SIZE` is never used
[INFO] [stdout]  --> src/utils/mod.rs:2:11
[INFO] [stdout]   |
[INFO] [stdout] 2 | pub const ID3V2_HEADER_SIZE: usize = 10;
[INFO] [stdout]   |           ^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `read_synchsafe_bytes` is never used
[INFO] [stdout]  --> src/utils/mod.rs:6:8
[INFO] [stdout]   |
[INFO] [stdout] 6 | pub fn read_synchsafe_bytes(bytes: &[u8]) -> usize {
[INFO] [stdout]   |        ^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: std::result::Result<u64, Infallible>
[INFO] [stdout]   --> src/analyser/mod.rs:62:30
[INFO] [stdout]    |
[INFO] [stdout] 62 |         self.reader_offset = offset.try_into().unwrap();
[INFO] [stdout]    |                              ^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: requested on the command line with `-D unmustuse-in-always-ok`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `vapor-parser` (lib) due to 1 previous error; 15 warnings emitted
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stdout] warning: unused variable: `footer_size`
[INFO] [stdout]   --> src/id3v2/mod.rs:67:9
[INFO] [stdout]    |
[INFO] [stdout] 67 |     let footer_size: u64 = if footer { 10 } else { 0 };
[INFO] [stdout]    |         ^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_footer_size`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `AudioFramesIndexItem` is never constructed
[INFO] [stdout]   --> src/analyser/mod.rs:24:12
[INFO] [stdout]    |
[INFO] [stdout] 24 | pub struct AudioFramesIndexItem {
[INFO] [stdout]    |            ^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Analysis` is never constructed
[INFO] [stdout]   --> src/analyser/mod.rs:36:12
[INFO] [stdout]    |
[INFO] [stdout] 36 | pub struct Analysis {
[INFO] [stdout]    |            ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `is_id3v1_tag` is never used
[INFO] [stdout]   --> src/id3v1/mod.rs:53:8
[INFO] [stdout]    |
[INFO] [stdout] 53 | pub fn is_id3v1_tag(buffer: &[u8]) -> bool {
[INFO] [stdout]    |        ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `decode` is never used
[INFO] [stdout]   --> src/id3v1/mod.rs:60:8
[INFO] [stdout]    |
[INFO] [stdout] 60 | pub fn decode(buffer: &[u8; ID3V1_HEADER_SIZE]) -> Result<ID3V1Tag> {
[INFO] [stdout]    |        ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: fields `unsynchronisation`, `extended_header`, `experimental`, and `footer` are never read
[INFO] [stdout]   --> src/id3v2/mod.rs:7:5
[INFO] [stdout]    |
[INFO] [stdout]  6 | pub struct ID3V2Flags {
[INFO] [stdout]    |            ---------- fields in this struct
[INFO] [stdout]  7 |     unsynchronisation: bool,
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^
[INFO] [stdout]  8 |     extended_header: bool,
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^
[INFO] [stdout]  9 |     experimental: bool,
[INFO] [stdout]    |     ^^^^^^^^^^^^
[INFO] [stdout] 10 |     footer: bool,
[INFO] [stdout]    |     ^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `ID3V2Flags` has derived impls for the traits `Clone` and `Debug`, but these are intentionally ignored during dead code analysis
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `is_id3v2_tag` is never used
[INFO] [stdout]   --> src/id3v2/mod.rs:27:8
[INFO] [stdout]    |
[INFO] [stdout] 27 | pub fn is_id3v2_tag(buffer: &[u8]) -> bool {
[INFO] [stdout]    |        ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `decode_header` is never used
[INFO] [stdout]   --> src/id3v2/mod.rs:34:8
[INFO] [stdout]    |
[INFO] [stdout] 34 | pub fn decode_header(buffer: &[u8; ID3V2_HEADER_SIZE]) -> Result<ID3V2TagHeader> {
[INFO] [stdout]    |        ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `is_valid_key_character` is never used
[INFO] [stdout]   --> src/id3v2/mod.rs:82:8
[INFO] [stdout]    |
[INFO] [stdout] 82 | pub fn is_valid_key_character(c: char) -> bool {
[INFO] [stdout]    |        ^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `decode_frames` is never used
[INFO] [stdout]   --> src/id3v2/mod.rs:86:14
[INFO] [stdout]    |
[INFO] [stdout] 86 | pub async fn decode_frames(buffer: &[u8]) -> Result<HashMap<String, String>> {
[INFO] [stdout]    |              ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant `TAGS` is never used
[INFO] [stdout]  --> src/id3v2/tags.rs:1:11
[INFO] [stdout]   |
[INFO] [stdout] 1 | pub const TAGS: [&str; 84] = [
[INFO] [stdout]   |           ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant `ID3V2_HEADER_SIZE` is never used
[INFO] [stdout]  --> src/utils/mod.rs:2:11
[INFO] [stdout]   |
[INFO] [stdout] 2 | pub const ID3V2_HEADER_SIZE: usize = 10;
[INFO] [stdout]   |           ^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `read_synchsafe_bytes` is never used
[INFO] [stdout]  --> src/utils/mod.rs:6:8
[INFO] [stdout]   |
[INFO] [stdout] 6 | pub fn read_synchsafe_bytes(bytes: &[u8]) -> usize {
[INFO] [stdout]   |        ^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: std::result::Result<u64, Infallible>
[INFO] [stdout]   --> src/analyser/mod.rs:62:30
[INFO] [stdout]    |
[INFO] [stdout] 62 |         self.reader_offset = offset.try_into().unwrap();
[INFO] [stdout]    |                              ^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: requested on the command line with `-D unmustuse-in-always-ok`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `vapor-parser` (lib test) due to 1 previous error; 13 warnings emitted
[INFO] running `Command { std: "docker" "inspect" "3e605e7b6fea206c39da690a74e61b84ae39f3b563275248906e236e6961b170", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "3e605e7b6fea206c39da690a74e61b84ae39f3b563275248906e236e6961b170", kill_on_drop: false }`
[INFO] [stdout] 3e605e7b6fea206c39da690a74e61b84ae39f3b563275248906e236e6961b170