[INFO] fetching crate music-metadata 0.3.0...
[INFO] testing music-metadata-0.3.0 against try#b83b707f97d809763b7861afa7638871f3339a33 for pr-145838-1
[INFO] extracting crate music-metadata 0.3.0 into /workspace/builds/worker-1-tc2/source
[INFO] started tweaking crates.io crate music-metadata 0.3.0
[INFO] finished tweaking crates.io crate music-metadata 0.3.0
[INFO] tweaked toml for crates.io crate music-metadata 0.3.0 written to /workspace/builds/worker-1-tc2/source/Cargo.toml
[INFO] validating manifest of crates.io crate music-metadata 0.3.0 on toolchain b83b707f97d809763b7861afa7638871f3339a33
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+b83b707f97d809763b7861afa7638871f3339a33" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate crates.io crate music-metadata 0.3.0 already has a lockfile, it will not be regenerated
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+b83b707f97d809763b7861afa7638871f3339a33" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-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@sha256:7ad1b28ee6f5f7f699f6cf7015098d6ccdd96d6f2d78dd06228f5b4c9faf309c" "/opt/rustwide/cargo-home/bin/cargo" "+b83b707f97d809763b7861afa7638871f3339a33" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] f594a4204c495b03e7baffd4927babdde378a28470d503794d649599dfb3863c
[INFO] running `Command { std: "docker" "start" "-a" "f594a4204c495b03e7baffd4927babdde378a28470d503794d649599dfb3863c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "f594a4204c495b03e7baffd4927babdde378a28470d503794d649599dfb3863c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "f594a4204c495b03e7baffd4927babdde378a28470d503794d649599dfb3863c", kill_on_drop: false }`
[INFO] [stdout] f594a4204c495b03e7baffd4927babdde378a28470d503794d649599dfb3863c
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-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" "-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@sha256:7ad1b28ee6f5f7f699f6cf7015098d6ccdd96d6f2d78dd06228f5b4c9faf309c" "/opt/rustwide/cargo-home/bin/cargo" "+b83b707f97d809763b7861afa7638871f3339a33" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 8ede8e0cbc2cbf0c5db48f8678b6a09343f1a29e65da036f4b69772b8e8aab8a
[INFO] running `Command { std: "docker" "start" "-a" "8ede8e0cbc2cbf0c5db48f8678b6a09343f1a29e65da036f4b69772b8e8aab8a", kill_on_drop: false }`
[INFO] [stderr]    Compiling music-metadata v0.3.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: field `version` is never read
[INFO] [stdout]   --> src/id3/frames/header.rs:13:9
[INFO] [stdout]    |
[INFO] [stdout]  9 | pub struct FrameHeader {
[INFO] [stdout]    |            ----------- field in this struct
[INFO] [stdout] ...
[INFO] [stdout] 13 |     pub version: Version,
[INFO] [stdout]    |         ^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `comment_body` is never read
[INFO] [stdout]   --> src/ogg/ogg_vorbis_comment.rs:15:9
[INFO] [stdout]    |
[INFO] [stdout] 11 | pub struct CommentHeader {
[INFO] [stdout]    |            ------------- field in this struct
[INFO] [stdout] ...
[INFO] [stdout] 15 |     pub comment_body: CommentBody,
[INFO] [stdout]    |         ^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `CommentHeader` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 0.86s
[INFO] running `Command { std: "docker" "inspect" "8ede8e0cbc2cbf0c5db48f8678b6a09343f1a29e65da036f4b69772b8e8aab8a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "8ede8e0cbc2cbf0c5db48f8678b6a09343f1a29e65da036f4b69772b8e8aab8a", kill_on_drop: false }`
[INFO] [stdout] 8ede8e0cbc2cbf0c5db48f8678b6a09343f1a29e65da036f4b69772b8e8aab8a
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-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" "-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@sha256:7ad1b28ee6f5f7f699f6cf7015098d6ccdd96d6f2d78dd06228f5b4c9faf309c" "/opt/rustwide/cargo-home/bin/cargo" "+b83b707f97d809763b7861afa7638871f3339a33" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 512e6283216c4eefd63be14214d95ff89483fcb72a9385e2a787e5f783fadfde
[INFO] running `Command { std: "docker" "start" "-a" "512e6283216c4eefd63be14214d95ff89483fcb72a9385e2a787e5f783fadfde", kill_on_drop: false }`
[INFO] [stderr]    Compiling music-metadata v0.3.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: field `version` is never read
[INFO] [stdout]   --> src/id3/frames/header.rs:13:9
[INFO] [stdout]    |
[INFO] [stdout]  9 | pub struct FrameHeader {
[INFO] [stdout]    |            ----------- field in this struct
[INFO] [stdout] ...
[INFO] [stdout] 13 |     pub version: Version,
[INFO] [stdout]    |         ^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `comment_body` is never read
[INFO] [stdout]   --> src/ogg/ogg_vorbis_comment.rs:15:9
[INFO] [stdout]    |
[INFO] [stdout] 11 | pub struct CommentHeader {
[INFO] [stdout]    |            ------------- field in this struct
[INFO] [stdout] ...
[INFO] [stdout] 15 |     pub comment_body: CommentBody,
[INFO] [stdout]    |         ^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `CommentHeader` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `version` is never read
[INFO] [stdout]   --> src/id3/frames/header.rs:13:9
[INFO] [stdout]    |
[INFO] [stdout]  9 | pub struct FrameHeader {
[INFO] [stdout]    |            ----------- field in this struct
[INFO] [stdout] ...
[INFO] [stdout] 13 |     pub version: Version,
[INFO] [stdout]    |         ^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `comment_body` is never read
[INFO] [stdout]   --> src/ogg/ogg_vorbis_comment.rs:15:9
[INFO] [stdout]    |
[INFO] [stdout] 11 | pub struct CommentHeader {
[INFO] [stdout]    |            ------------- field in this struct
[INFO] [stdout] ...
[INFO] [stdout] 15 |     pub comment_body: CommentBody,
[INFO] [stdout]    |         ^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `CommentHeader` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.63s
[INFO] running `Command { std: "docker" "inspect" "512e6283216c4eefd63be14214d95ff89483fcb72a9385e2a787e5f783fadfde", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "512e6283216c4eefd63be14214d95ff89483fcb72a9385e2a787e5f783fadfde", kill_on_drop: false }`
[INFO] [stdout] 512e6283216c4eefd63be14214d95ff89483fcb72a9385e2a787e5f783fadfde
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-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" "-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@sha256:7ad1b28ee6f5f7f699f6cf7015098d6ccdd96d6f2d78dd06228f5b4c9faf309c" "/opt/rustwide/cargo-home/bin/cargo" "+b83b707f97d809763b7861afa7638871f3339a33" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] b94fdae7fdb7113b2ea5c64e9c47a63ab87f85d375c0afec0ff57fe2f6590588
[INFO] running `Command { std: "docker" "start" "-a" "b94fdae7fdb7113b2ea5c64e9c47a63ab87f85d375c0afec0ff57fe2f6590588", kill_on_drop: false }`
[INFO] [stderr] warning: field `version` is never read
[INFO] [stderr]   --> src/id3/frames/header.rs:13:9
[INFO] [stderr]    |
[INFO] [stderr]  9 | pub struct FrameHeader {
[INFO] [stderr]    |            ----------- field in this struct
[INFO] [stderr] ...
[INFO] [stderr] 13 |     pub version: Version,
[INFO] [stderr]    |         ^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stderr] 
[INFO] [stderr] warning: field `comment_body` is never read
[INFO] [stderr]   --> src/ogg/ogg_vorbis_comment.rs:15:9
[INFO] [stderr]    |
[INFO] [stderr] 11 | pub struct CommentHeader {
[INFO] [stderr]    |            ------------- field in this struct
[INFO] [stderr] ...
[INFO] [stderr] 15 |     pub comment_body: CommentBody,
[INFO] [stderr]    |         ^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `CommentHeader` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stderr] 
[INFO] [stderr] warning: `music-metadata` (lib) generated 2 warnings
[INFO] [stderr] warning: `music-metadata` (lib test) generated 2 warnings (2 duplicates)
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.01s
[INFO] [stderr]      Running unittests src/lib.rs (/opt/rustwide/target/debug/deps/music_metadata-ea89b707f142d91d)
[INFO] [stdout] 
[INFO] [stdout] running 0 tests
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] [stderr]    Doc-tests music_metadata
[INFO] [stdout] 
[INFO] [stdout] running 0 tests
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "b94fdae7fdb7113b2ea5c64e9c47a63ab87f85d375c0afec0ff57fe2f6590588", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "b94fdae7fdb7113b2ea5c64e9c47a63ab87f85d375c0afec0ff57fe2f6590588", kill_on_drop: false }`
[INFO] [stdout] b94fdae7fdb7113b2ea5c64e9c47a63ab87f85d375c0afec0ff57fe2f6590588