[INFO] cloning repository https://github.com/bihellzin/epub-to-mp3
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/bihellzin/epub-to-mp3" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fbihellzin%2Fepub-to-mp3", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fbihellzin%2Fepub-to-mp3'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 9a65f4282db1801b50a9c498fb9696ad3e6d91f2
[INFO] checking bihellzin/epub-to-mp3 against master#3391c0133661be933c3ef24edf1867d71b9f206b for pr-149195-2
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fbihellzin%2Fepub-to-mp3" "/workspace/builds/worker-6-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-6-tc1/source'...
[INFO] [stderr] done.
[INFO] started tweaking git repo https://github.com/bihellzin/epub-to-mp3
[INFO] finished tweaking git repo https://github.com/bihellzin/epub-to-mp3
[INFO] tweaked toml for git repo https://github.com/bihellzin/epub-to-mp3 written to /workspace/builds/worker-6-tc1/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/bihellzin/epub-to-mp3 on toolchain 3391c0133661be933c3ef24edf1867d71b9f206b
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+3391c0133661be933c3ef24edf1867d71b9f206b" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/bihellzin/epub-to-mp3 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" "+3391c0133661be933c3ef24edf1867d71b9f206b" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
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[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc1/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@sha256:94a0c148923f5b2b52a63ef0eeb1882ad339ab61bce784c8077cbe41c61feb6c" "/opt/rustwide/cargo-home/bin/cargo" "+3391c0133661be933c3ef24edf1867d71b9f206b" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 136a270cc8e909650b082f8d1c4c39d073589706972be9f645ee7a3cfce7fcee
[INFO] running `Command { std: "docker" "start" "-a" "136a270cc8e909650b082f8d1c4c39d073589706972be9f645ee7a3cfce7fcee", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "136a270cc8e909650b082f8d1c4c39d073589706972be9f645ee7a3cfce7fcee", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "136a270cc8e909650b082f8d1c4c39d073589706972be9f645ee7a3cfce7fcee", kill_on_drop: false }`
[INFO] [stdout] 136a270cc8e909650b082f8d1c4c39d073589706972be9f645ee7a3cfce7fcee
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc1/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@sha256:94a0c148923f5b2b52a63ef0eeb1882ad339ab61bce784c8077cbe41c61feb6c" "/opt/rustwide/cargo-home/bin/cargo" "+3391c0133661be933c3ef24edf1867d71b9f206b" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 4d46e0fc12829f08680e3bab6ba1545edba708f9cf2c9d643a17a841ec5a7de3
[INFO] running `Command { std: "docker" "start" "-a" "4d46e0fc12829f08680e3bab6ba1545edba708f9cf2c9d643a17a841ec5a7de3", kill_on_drop: false }`
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[INFO] [stderr]    Compiling minimal-lexical v0.2.1
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[INFO] [stderr]    Compiling either v1.8.1
[INFO] [stderr]    Compiling bindgen v0.66.1
[INFO] [stderr]    Compiling generic-array v0.14.7
[INFO] [stderr]    Compiling peeking_take_while v0.1.2
[INFO] [stderr]    Compiling libloading v0.7.4
[INFO] [stderr]    Compiling bitflags v2.3.2
[INFO] [stderr]    Compiling lazycell v1.3.0
[INFO] [stderr]    Compiling lazy_static v1.4.0
[INFO] [stderr]    Compiling shlex v1.1.0
[INFO] [stderr]    Compiling rustc-hash v1.1.0
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[INFO] [stderr]    Compiling thiserror v1.0.40
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[INFO] [stderr]    Compiling tts v0.25.5
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[INFO] [stderr]     Checking unicode-bidi v0.3.13
[INFO] [stderr]    Compiling syn v2.0.18
[INFO] [stderr]    Compiling nom v7.1.3
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[INFO] [stderr]     Checking aho-corasick v1.0.2
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[INFO] [stderr]     Checking aes v0.8.3
[INFO] [stderr]     Checking cbc v0.1.2
[INFO] [stderr]    Compiling datasize_derive v0.2.14
[INFO] [stderr]    Compiling fax_derive v0.1.0
[INFO] [stderr]    Compiling dyn-clonable-impl v0.9.0
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[INFO] [stderr]    Compiling pdf_derive v0.1.22
[INFO] [stderr]     Checking dyn-clonable v0.9.0
[INFO] [stderr]    Compiling thiserror-impl v1.0.40
[INFO] [stderr]     Checking datasize v0.2.14
[INFO] [stderr]     Checking fax v0.2.0
[INFO] [stderr]     Checking istring v0.3.3
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[INFO] [stderr]     Checking pdf v0.8.1
[INFO] [stderr]     Checking epub v2.0.0
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[INFO] [stderr]     Checking converter v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/main.rs:11:9
[INFO] [stdout]    |
[INFO] [stdout] 11 |     let mut tts = Tts::default();
[INFO] [stdout]    |         ----^^^
[INFO] [stdout]    |         |
[INFO] [stdout]    |         help: remove this `mut`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_mut)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]   --> src/main.rs:12:5
[INFO] [stdout]    |
[INFO] [stdout] 12 |     tts.expect("").speak("hello world".to_string(), false);
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout]    = note: `#[warn(unused_must_use)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]    |
[INFO] [stdout] 12 |     let _ = tts.expect("").speak("hello world".to_string(), false);
[INFO] [stdout]    |     +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/main.rs:11:9
[INFO] [stdout]    |
[INFO] [stdout] 11 |     let mut tts = Tts::default();
[INFO] [stdout]    |         ----^^^
[INFO] [stdout]    |         |
[INFO] [stdout]    |         help: remove this `mut`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_mut)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]   --> src/main.rs:12:5
[INFO] [stdout]    |
[INFO] [stdout] 12 |     tts.expect("").speak("hello world".to_string(), false);
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout]    = note: `#[warn(unused_must_use)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]    |
[INFO] [stdout] 12 |     let _ = tts.expect("").speak("hello world".to_string(), false);
[INFO] [stdout]    |     +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 25.12s
[INFO] [stderr] warning: the following packages contain code that will be rejected by a future version of Rust: pdf v0.8.1
[INFO] [stderr] note: to see what the problems were, use the option `--future-incompat-report`, or run `cargo report future-incompatibilities --id 2`
[INFO] running `Command { std: "docker" "inspect" "4d46e0fc12829f08680e3bab6ba1545edba708f9cf2c9d643a17a841ec5a7de3", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "4d46e0fc12829f08680e3bab6ba1545edba708f9cf2c9d643a17a841ec5a7de3", kill_on_drop: false }`
[INFO] [stdout] 4d46e0fc12829f08680e3bab6ba1545edba708f9cf2c9d643a17a841ec5a7de3