[INFO] fetching crate mdbook-epub 0.3.0...
[INFO] checking mdbook-epub-0.3.0 against beta for pr-78714
[INFO] extracting crate mdbook-epub 0.3.0 into /workspace/builds/worker-7/source
[INFO] validating manifest of crates.io crate mdbook-epub 0.3.0 on toolchain beta
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking crates.io crate mdbook-epub 0.3.0
[INFO] finished tweaking crates.io crate mdbook-epub 0.3.0
[INFO] tweaked toml for crates.io crate mdbook-epub 0.3.0 written to /workspace/builds/worker-7/source/Cargo.toml
[INFO] crate crates.io crate mdbook-epub 0.3.0 already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/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" "rustops/crates-build-env@sha256:d92eaeed33fa75130ca1ee6c8a01d1ffb62bac859dfdfb3450e3e5d1c0146529" "/opt/rustwide/cargo-home/bin/cargo" "+beta" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] dcfa4a46a2395a1cbfc84c5f39d144ea5ee123868e054a2037229667374e3444
[INFO] running `Command { std: "docker" "start" "-a" "dcfa4a46a2395a1cbfc84c5f39d144ea5ee123868e054a2037229667374e3444", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "dcfa4a46a2395a1cbfc84c5f39d144ea5ee123868e054a2037229667374e3444", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "dcfa4a46a2395a1cbfc84c5f39d144ea5ee123868e054a2037229667374e3444", kill_on_drop: false }`
[INFO] [stdout] dcfa4a46a2395a1cbfc84c5f39d144ea5ee123868e054a2037229667374e3444
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/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" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "rustops/crates-build-env@sha256:d92eaeed33fa75130ca1ee6c8a01d1ffb62bac859dfdfb3450e3e5d1c0146529" "/opt/rustwide/cargo-home/bin/cargo" "+beta" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 0617bd676bdba8aeb80e18ecca543790aee827337eecfebb01b777795b120241
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "0617bd676bdba8aeb80e18ecca543790aee827337eecfebb01b777795b120241", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.61
[INFO] [stderr]    Compiling autocfg v0.1.5
[INFO] [stderr]     Checking cfg-if v0.1.9
[INFO] [stderr]    Compiling syn v0.15.44
[INFO] [stderr]    Compiling cc v1.0.40
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[INFO] [stderr]     Checking lazy_static v1.3.0
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[INFO] [stderr]    Compiling string_cache_shared v0.3.0
[INFO] [stderr]     Checking smallvec v0.6.10
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[INFO] [stderr]    Compiling bitflags v1.1.0
[INFO] [stderr]     Checking rustc-demangle v0.1.15
[INFO] [stderr]    Compiling itoa v0.4.4
[INFO] [stderr]     Checking new_debug_unreachable v1.0.3
[INFO] [stderr]    Compiling ucd-trie v0.1.2
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[INFO] [stderr]    Compiling unicode-segmentation v1.3.0
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[INFO] [stderr]     Checking rle-decode-fast v1.0.1
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[INFO] [stderr]    Compiling pulldown-cmark v0.5.3
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[INFO] [stderr]    Compiling unicase v2.4.0
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[INFO] [stderr]     Checking libflate v0.1.26
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[INFO] [stderr]    Compiling rand_os v0.1.3
[INFO] [stderr]     Checking aho-corasick v0.7.6
[INFO] [stderr]     Checking time v0.1.42
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[INFO] [stderr]    Compiling backtrace-sys v0.1.31
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[INFO] [stderr]    Compiling phf_generator v0.7.24
[INFO] [stderr]     Checking zip v0.4.2
[INFO] [stderr]     Checking env_logger v0.6.2
[INFO] [stderr]    Compiling phf_codegen v0.7.24
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[INFO] [stderr]    Compiling mime_guess v1.8.7
[INFO] [stderr]     Checking tempfile v3.1.0
[INFO] [stderr]    Compiling string_cache v0.7.3
[INFO] [stderr]     Checking serde_json v1.0.40
[INFO] [stderr]     Checking toml v0.5.1
[INFO] [stderr]     Checking hashbrown v0.5.0
[INFO] [stderr]     Checking mustache v0.9.0
[INFO] [stderr]     Checking iron v0.6.0
[INFO] [stderr]     Checking epub-builder v0.4.4
[INFO] [stderr]     Checking mount v0.4.0
[INFO] [stderr]     Checking staticfile v0.5.0
[INFO] [stderr]    Compiling darling_core v0.8.6
[INFO] [stderr]    Compiling synstructure v0.10.2
[INFO] [stderr]    Compiling pest_generator v2.1.0
[INFO] [stderr]    Compiling serde_derive v1.0.98
[INFO] [stderr]    Compiling html5ever v0.23.0
[INFO] [stderr]    Compiling strum_macros v0.15.0
[INFO] [stderr]    Compiling pest_derive v2.1.0
[INFO] [stderr]    Compiling structopt-derive v0.2.18
[INFO] [stderr]     Checking handlebars v2.0.1
[INFO] [stderr]     Checking failure v0.1.5
[INFO] [stderr]     Checking epub v1.2.0
[INFO] [stderr]    Compiling darling_macro v0.8.6
[INFO] [stderr]     Checking structopt v0.2.18
[INFO] [stdout] error[E0382]: assign to part of moved value: `node`
[INFO] [stdout]   --> /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/epub-1.2.0/src/xmlutils.rs:68:29
[INFO] [stdout]    |
[INFO] [stdout] 53 |                     let mut node = XMLNode {
[INFO] [stdout]    |                         -------- move occurs because `node` has type `XMLNode`, which does not implement the `Copy` trait
[INFO] [stdout] ...
[INFO] [stdout] 62 |                     let arnode = Rc::new(RefCell::new(node));
[INFO] [stdout]    |                                                       ---- value moved here
[INFO] [stdout] ...
[INFO] [stdout] 68 |                             node.parent = Some(Rc::downgrade(&c));
[INFO] [stdout]    |                             ^^^^^^^^^^^ value partially assigned here after move
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to previous error
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0382`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `epub`
[INFO] [stderr] 
[INFO] [stderr] To learn more, run the command again with --verbose.
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stderr] error: build failed
[INFO] running `Command { std: "docker" "inspect" "0617bd676bdba8aeb80e18ecca543790aee827337eecfebb01b777795b120241", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "0617bd676bdba8aeb80e18ecca543790aee827337eecfebb01b777795b120241", kill_on_drop: false }`
[INFO] [stdout] 0617bd676bdba8aeb80e18ecca543790aee827337eecfebb01b777795b120241