[INFO] cloning repository https://github.com/Michael-F-Bryan/mdbook-epub
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/Michael-F-Bryan/mdbook-epub" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FMichael-F-Bryan%2Fmdbook-epub", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FMichael-F-Bryan%2Fmdbook-epub'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] cb441315f259df9938e24e1297c7fe48d039654f
[INFO] checking Michael-F-Bryan/mdbook-epub against master#385fa9d845dd326c6bbfd58c22244215e431948a for absurd-question-mark-desugar
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FMichael-F-Bryan%2Fmdbook-epub" "/workspace/builds/worker-5-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-5-tc1/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/Michael-F-Bryan/mdbook-epub on toolchain 385fa9d845dd326c6bbfd58c22244215e431948a
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+385fa9d845dd326c6bbfd58c22244215e431948a" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/Michael-F-Bryan/mdbook-epub
[INFO] finished tweaking git repo https://github.com/Michael-F-Bryan/mdbook-epub
[INFO] tweaked toml for git repo https://github.com/Michael-F-Bryan/mdbook-epub written to /workspace/builds/worker-5-tc1/source/Cargo.toml
[INFO] crate git repo https://github.com/Michael-F-Bryan/mdbook-epub 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" "+385fa9d845dd326c6bbfd58c22244215e431948a" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]  Downloading crates ...
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[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+385fa9d845dd326c6bbfd58c22244215e431948a" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
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[INFO] running `Command { std: "docker" "start" "-a" "9ec517c1ad6f4e95e16c4b4d8c9ba75eb5746b8b0d168e3fe25a242a8ff25b89", kill_on_drop: false }`
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[INFO] [stderr]     Checking mdbook-epub v0.4.37 (/opt/rustwide/workdir)
[INFO] [stdout] warning: the item `mdbook` is imported redundantly
[INFO] [stdout]   --> src/lib.rs:13:5
[INFO] [stdout]    |
[INFO] [stdout] 13 | use ::mdbook;
[INFO] [stdout]    |     ^^^^^^^^ the item `mdbook` is already defined by prelude
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `semver` is imported redundantly
[INFO] [stdout]   --> src/lib.rs:14:5
[INFO] [stdout]    |
[INFO] [stdout] 14 | use ::semver;
[INFO] [stdout]    |     ^^^^^^^^ the item `semver` is already defined by prelude
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `mdbook` is imported redundantly
[INFO] [stdout]   --> src/lib.rs:13:5
[INFO] [stdout]    |
[INFO] [stdout] 13 | use ::mdbook;
[INFO] [stdout]    |     ^^^^^^^^ the item `mdbook` is already defined by prelude
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `semver` is imported redundantly
[INFO] [stdout]   --> src/lib.rs:14:5
[INFO] [stdout]    |
[INFO] [stdout] 14 | use ::semver;
[INFO] [stdout]    |     ^^^^^^^^ the item `semver` is already defined by prelude
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `Path` is imported redundantly
[INFO] [stdout]    --> src/generator.rs:578:9
[INFO] [stdout]     |
[INFO] [stdout] 578 |     use std::path::Path;
[INFO] [stdout]     |         ^^^^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 582 |     use super::*;
[INFO] [stdout]     |         -------- the item `Path` is already imported here
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `encode` is imported redundantly
[INFO] [stdout]    --> src/generator.rs:580:9
[INFO] [stdout]     |
[INFO] [stdout] 580 |     use urlencoding::encode;
[INFO] [stdout]     |         ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 581 |
[INFO] [stdout] 582 |     use super::*;
[INFO] [stdout]     |         -------- the item `encode` is already imported here
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `AssetKind` is imported redundantly
[INFO] [stdout]    --> src/generator.rs:583:9
[INFO] [stdout]     |
[INFO] [stdout] 582 |     use super::*;
[INFO] [stdout]     |         -------- the item `AssetKind` is already imported here
[INFO] [stdout] 583 |     use crate::resources::asset::AssetKind;
[INFO] [stdout]     |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `epub` is imported redundantly
[INFO] [stdout]   --> tests/integration_tests.rs:13:5
[INFO] [stdout]    |
[INFO] [stdout] 13 | use ::epub;
[INFO] [stdout]    |     ^^^^^^ the item `epub` is already defined by prelude
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `mdbook` is imported redundantly
[INFO] [stdout]   --> tests/integration_tests.rs:14:5
[INFO] [stdout]    |
[INFO] [stdout] 14 | use ::mdbook;
[INFO] [stdout]    |     ^^^^^^^^ the item `mdbook` is already defined by prelude
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `mdbook_epub` is imported redundantly
[INFO] [stdout]   --> tests/integration_tests.rs:20:5
[INFO] [stdout]    |
[INFO] [stdout] 20 | use ::mdbook_epub;
[INFO] [stdout]    |     ^^^^^^^^^^^^^ the item `mdbook_epub` is already defined by prelude
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `env_logger` is imported redundantly
[INFO] [stdout]  --> src/bin/mdbook-epub.rs:8:5
[INFO] [stdout]   |
[INFO] [stdout] 8 | use ::env_logger;
[INFO] [stdout]   |     ^^^^^^^^^^^^ the item `env_logger` is already defined by prelude
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `mdbook` is imported redundantly
[INFO] [stdout]  --> src/bin/mdbook-epub.rs:9:5
[INFO] [stdout]   |
[INFO] [stdout] 9 | use ::mdbook;
[INFO] [stdout]   |     ^^^^^^^^ the item `mdbook` is already defined by prelude
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `serde_json` is imported redundantly
[INFO] [stdout]   --> src/bin/mdbook-epub.rs:10:5
[INFO] [stdout]    |
[INFO] [stdout] 10 | use ::serde_json;
[INFO] [stdout]    |     ^^^^^^^^^^^^ the item `serde_json` is already defined by prelude
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `env_logger` is imported redundantly
[INFO] [stdout]  --> src/bin/mdbook-epub.rs:8:5
[INFO] [stdout]   |
[INFO] [stdout] 8 | use ::env_logger;
[INFO] [stdout]   |     ^^^^^^^^^^^^ the item `env_logger` is already defined by prelude
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `structopt` is imported redundantly
[INFO] [stdout]   --> src/bin/mdbook-epub.rs:11:5
[INFO] [stdout]    |
[INFO] [stdout] 11 | use ::structopt;
[INFO] [stdout]    |     ^^^^^^^^^^^ the item `structopt` is already defined by prelude
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `mdbook` is imported redundantly
[INFO] [stdout]  --> src/bin/mdbook-epub.rs:9:5
[INFO] [stdout]   |
[INFO] [stdout] 9 | use ::mdbook;
[INFO] [stdout]   |     ^^^^^^^^ the item `mdbook` is already defined by prelude
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `serde_json` is imported redundantly
[INFO] [stdout]   --> src/bin/mdbook-epub.rs:10:5
[INFO] [stdout]    |
[INFO] [stdout] 10 | use ::serde_json;
[INFO] [stdout]    |     ^^^^^^^^^^^^ the item `serde_json` is already defined by prelude
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `structopt` is imported redundantly
[INFO] [stdout]   --> src/bin/mdbook-epub.rs:11:5
[INFO] [stdout]    |
[INFO] [stdout] 11 | use ::structopt;
[INFO] [stdout]    |     ^^^^^^^^^^^ the item `structopt` is already defined by prelude
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `mdbook_epub` is imported redundantly
[INFO] [stdout]   --> src/bin/mdbook-epub.rs:16:5
[INFO] [stdout]    |
[INFO] [stdout] 16 | use ::mdbook_epub;
[INFO] [stdout]    |     ^^^^^^^^^^^^^ the item `mdbook_epub` is already defined by prelude
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `mdbook_epub` is imported redundantly
[INFO] [stdout]   --> src/bin/mdbook-epub.rs:16:5
[INFO] [stdout]    |
[INFO] [stdout] 16 | use ::mdbook_epub;
[INFO] [stdout]    |     ^^^^^^^^^^^^^ the item `mdbook_epub` is already defined by prelude
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 3 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 5 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 5 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 5 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 24.42s
[INFO] running `Command { std: "docker" "inspect" "3355d01e0acbbbbf9ccaf6a2504f31feacff9b74dca19f163adbcce589db4b10", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "3355d01e0acbbbbf9ccaf6a2504f31feacff9b74dca19f163adbcce589db4b10", kill_on_drop: false }`
[INFO] [stdout] 3355d01e0acbbbbf9ccaf6a2504f31feacff9b74dca19f163adbcce589db4b10