[INFO] crate mdbook-epub 0.2.0 is already in cache
[INFO] extracting crate mdbook-epub 0.2.0 into work/ex/pr-60932/sources/master#548add7f61bfcbe3bea3f5ccefb53c84da8fefe4/reg/mdbook-epub/0.2.0
[INFO] extracting crate mdbook-epub 0.2.0 into work/ex/pr-60932/sources/try#097e26225c5cc28d3042ad4c80eac7c488f78ee7/reg/mdbook-epub/0.2.0
[INFO] validating manifest of mdbook-epub-0.2.0 on toolchain master#548add7f61bfcbe3bea3f5ccefb53c84da8fefe4
[INFO] running `"/mnt/crater-raid/crater/work/local/cargo-home/bin/cargo" "+548add7f61bfcbe3bea3f5ccefb53c84da8fefe4-alt" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] validating manifest of mdbook-epub-0.2.0 on toolchain try#097e26225c5cc28d3042ad4c80eac7c488f78ee7
[INFO] running `"/mnt/crater-raid/crater/work/local/cargo-home/bin/cargo" "+097e26225c5cc28d3042ad4c80eac7c488f78ee7-alt" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started frobbing mdbook-epub-0.2.0
[INFO] finished frobbing mdbook-epub-0.2.0
[INFO] frobbed toml for mdbook-epub-0.2.0 written to work/ex/pr-60932/sources/master#548add7f61bfcbe3bea3f5ccefb53c84da8fefe4/reg/mdbook-epub/0.2.0/Cargo.toml
[INFO] started frobbing mdbook-epub-0.2.0
[INFO] finished frobbing mdbook-epub-0.2.0
[INFO] frobbed toml for mdbook-epub-0.2.0 written to work/ex/pr-60932/sources/try#097e26225c5cc28d3042ad4c80eac7c488f78ee7/reg/mdbook-epub/0.2.0/Cargo.toml
[INFO] running `"/mnt/crater-raid/crater/work/local/cargo-home/bin/cargo" "+548add7f61bfcbe3bea3f5ccefb53c84da8fefe4-alt" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"`
[INFO] running `"/mnt/crater-raid/crater/work/local/cargo-home/bin/cargo" "+097e26225c5cc28d3042ad4c80eac7c488f78ee7-alt" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"`
[INFO] running `"/mnt/crater-raid/crater/work/local/cargo-home/bin/cargo" "+548add7f61bfcbe3bea3f5ccefb53c84da8fefe4-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] [stderr]     Blocking waiting for file lock on package cache lock
[INFO] running `"/mnt/crater-raid/crater/work/local/cargo-home/bin/cargo" "+097e26225c5cc28d3042ad4c80eac7c488f78ee7-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] [stderr]     Blocking waiting for file lock on package cache lock
[INFO] checking mdbook-epub-0.2.0 against master#548add7f61bfcbe3bea3f5ccefb53c84da8fefe4 for pr-60932
[INFO] running `"docker" "create" "-v" "/mnt/crater-raid/crater/work/local/target-dirs/pr-60932/worker-1/master#548add7f61bfcbe3bea3f5ccefb53c84da8fefe4:/opt/crater/target:rw,Z" "-v" "/mnt/crater-raid/crater/work/ex/pr-60932/sources/master#548add7f61bfcbe3bea3f5ccefb53c84da8fefe4/reg/mdbook-epub/0.2.0:/opt/crater/workdir:ro,Z" "-v" "/mnt/crater-raid/crater/work/local/cargo-home:/opt/crater/cargo-home:ro,Z" "-v" "/mnt/crater-raid/crater/work/local/rustup-home:/opt/crater/rustup-home:ro,Z" "-e" "USER_ID=1000" "-e" "SOURCE_DIR=/opt/crater/workdir" "-e" "MAP_USER_ID=1000" "-e" "CARGO_TARGET_DIR=/opt/crater/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-e" "CARGO_HOME=/opt/crater/cargo-home" "-e" "RUSTUP_HOME=/opt/crater/rustup-home" "-w" "/opt/crater/workdir" "-m" "1536M" "--network" "none" "rustops/crates-build-env" "/opt/crater/cargo-home/bin/cargo" "+548add7f61bfcbe3bea3f5ccefb53c84da8fefe4-alt" "check" "--frozen" "--all" "--all-targets"`
[INFO] [stdout] 5748182c599dbf9de608f868cae7822da697fd7b3100ab0fb3397e64ded1132b
[INFO] running `"docker" "start" "-a" "5748182c599dbf9de608f868cae7822da697fd7b3100ab0fb3397e64ded1132b"`
[INFO] [stderr]    Compiling crossbeam v0.2.12
[INFO] [stderr]    Compiling home v0.3.4
[INFO] [stderr]    Compiling termcolor v0.3.6
[INFO] [stderr]    Compiling hex v0.2.0
[INFO] [stderr]    Compiling shell-escape v0.1.4
[INFO] [stderr]    Compiling crossbeam v0.3.2
[INFO] [stderr]    Compiling jobserver v0.1.13
[INFO] [stderr]    Compiling filetime v0.1.15
[INFO] [stderr]    Compiling fs2 v0.4.3
[INFO] [stderr]    Compiling semver v0.8.0
[INFO] [stderr]    Compiling serde_ignored v0.0.4
[INFO] [stderr]    Compiling tar v0.4.26
[INFO] [stderr]    Compiling libssh2-sys v0.2.11
[INFO] [stderr]    Compiling curl-sys v0.4.18
[INFO] [stderr]    Compiling curl v0.4.21
[INFO] [stderr]    Compiling openssl v0.10.23
[INFO] [stderr]     Checking structopt v0.1.7
[INFO] [stderr]    Compiling globset v0.2.1
[INFO] [stderr]    Compiling env_logger v0.4.3
[INFO] [stderr]    Compiling docopt v0.8.3
[INFO] [stderr]     Checking elasticlunr-rs v2.3.4
[INFO] [stderr]     Checking toml-query v0.7.0
[INFO] [stderr]     Checking handlebars v1.1.0
[INFO] [stderr]    Compiling libgit2-sys v0.6.19
[INFO] [stderr]     Checking epub-builder v0.3.0
[INFO] [stderr]     Checking epub v1.2.0
[INFO] [stderr]     Checking ammonia v1.2.0
[INFO] [stderr]    Compiling git2 v0.6.11
[INFO] [stderr] error[E0283]: type annotations required: cannot resolve `std::string::String: std::convert::AsRef<_>`
[INFO] [stderr]    --> /opt/crater/cargo-home/registry/src/github.com-1ecc6299db9ec823/epub-builder-0.3.0/src/epub.rs:207:74
[INFO] [stderr]     |
[INFO] [stderr] 207 |         self.toc.add(TocElement::new("toc.xhtml", self.metadata.toc_name.as_ref()));
[INFO] [stderr]     |                                                                          ^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning[E0382]: assign to part of moved value: `node`
[INFO] [stderr]   --> /opt/crater/cargo-home/registry/src/github.com-1ecc6299db9ec823/epub-1.2.0/src/xmlutils.rs:68:29
[INFO] [stderr]    |
[INFO] [stderr] 53 |                     let mut node = XMLNode {
[INFO] [stderr]    |                         -------- move occurs because `node` has type `xmlutils::XMLNode`, which does not implement the `Copy` trait
[INFO] [stderr] ...
[INFO] [stderr] 62 |                     let arnode = Rc::new(RefCell::new(node));
[INFO] [stderr]    |                                                       ---- value moved here
[INFO] [stderr] ...
[INFO] [stderr] 68 |                             node.parent = Some(Rc::downgrade(&c));
[INFO] [stderr]    |                             ^^^^^^^^^^^ value partially assigned here after move
[INFO] [stderr]    |
[INFO] [stderr]    = warning: this error has been downgraded to a warning for backwards compatibility with previous releases
[INFO] [stderr]    = warning: this represents potential undefined behavior in your code and this warning will become a hard error in the future
[INFO] [stderr] 
[INFO] [stderr] error: aborting due to previous error
[INFO] [stderr] 
[INFO] [stderr] For more information about this error, try `rustc --explain E0283`.
[INFO] [stderr] error: Could not compile `epub-builder`.
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stderr] error: build failed
[INFO] running `"docker" "inspect" "5748182c599dbf9de608f868cae7822da697fd7b3100ab0fb3397e64ded1132b"`
[INFO] running `"docker" "rm" "-f" "5748182c599dbf9de608f868cae7822da697fd7b3100ab0fb3397e64ded1132b"`
[INFO] [stdout] 5748182c599dbf9de608f868cae7822da697fd7b3100ab0fb3397e64ded1132b