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[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/jsim2010/paper" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fjsim2010%2Fpaper", kill_on_drop: false }`
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[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
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[INFO] checking jsim2010/paper/1bf46741a7499164bc4a2eefdf7569da014aa99f against master#a932eb36f8adf6c8cdfc450f063943da3112d621 for pr-140209-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fjsim2010%2Fpaper" "/workspace/builds/worker-4-tc1/source", kill_on_drop: false }`
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[INFO] validating manifest of git repo https://github.com/jsim2010/paper on toolchain a932eb36f8adf6c8cdfc450f063943da3112d621
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[INFO] finished tweaking git repo https://github.com/jsim2010/paper
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[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+a932eb36f8adf6c8cdfc450f063943da3112d621" "generate-lockfile" "--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-4-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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:b0b074c097205a61b89e8ad263052f976b2b332c4dc5f02aef1fe52501660d6e" "/opt/rustwide/cargo-home/bin/cargo" "+a932eb36f8adf6c8cdfc450f063943da3112d621" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
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[INFO] [stdout] warning: `#[must_use]` has no effect when applied to a provided trait method
[INFO] [stdout]   --> src/app/translate.rs:71:5
[INFO] [stdout]    |
[INFO] [stdout] 71 |     #[must_use]
[INFO] [stdout]    |     ^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_attributes)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: `#[must_use]` has no effect when applied to a provided trait method
[INFO] [stdout]   --> src/app/translate.rs:71:5
[INFO] [stdout]    |
[INFO] [stdout] 71 |     #[must_use]
[INFO] [stdout]    |     ^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_attributes)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: enum `DocOp` is never used
[INFO] [stdout]   --> src/app/translate.rs:83:17
[INFO] [stdout]    |
[INFO] [stdout] 83 | pub(crate) enum DocOp {
[INFO] [stdout]    |                 ^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `ReadFileError` is never constructed
[INFO] [stdout]   --> src/io.rs:96:8
[INFO] [stdout]    |
[INFO] [stdout] 96 | struct ReadFileError {
[INFO] [stdout]    |        ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `tongue` is never read
[INFO] [stdout]    --> src/io.rs:260:5
[INFO] [stdout]     |
[INFO] [stdout] 254 | pub(crate) struct Interface {
[INFO] [stdout]     |                   --------- field in this struct
[INFO] [stdout] ...
[INFO] [stdout] 260 |     tongue: Rc<Tongue>,
[INFO] [stdout]     |     ^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `Interface` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `UrlError` is never constructed
[INFO] [stdout]    --> src/io.rs:353:8
[INFO] [stdout]     |
[INFO] [stdout] 353 | struct UrlError(String);
[INFO] [stdout]     |        ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `version` is never read
[INFO] [stdout]    --> src/io.rs:558:9
[INFO] [stdout]     |
[INFO] [stdout] 556 |     Open {
[INFO] [stdout]     |     ---- field in this variant
[INFO] [stdout] 557 |         /// The version of the document.
[INFO] [stdout] 558 |         version: i32,
[INFO] [stdout]     |         ^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `DocEdit` has derived impls for the traits `Debug` and `Clone`, but these are intentionally ignored during dead code analysis
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `DocChange` is never constructed
[INFO] [stdout]    --> src/io.rs:566:19
[INFO] [stdout]     |
[INFO] [stdout] 566 | pub(crate) struct DocChange {
[INFO] [stdout]     |                   ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `modifiers` is never read
[INFO] [stdout]    --> src/io/ui.rs:196:9
[INFO] [stdout]     |
[INFO] [stdout] 192 |     Key {
[INFO] [stdout]     |     --- field in this variant
[INFO] [stdout] ...
[INFO] [stdout] 196 |         modifiers: KeyModifiers,
[INFO] [stdout]     |         ^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `UserAction` has derived impls for the traits `Debug` and `Clone`, but these are intentionally ignored during dead code analysis
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: enum `DocOp` is never used
[INFO] [stdout]   --> src/app/translate.rs:83:17
[INFO] [stdout]    |
[INFO] [stdout] 83 | pub(crate) enum DocOp {
[INFO] [stdout]    |                 ^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `ReadFileError` is never constructed
[INFO] [stdout]   --> src/io.rs:96:8
[INFO] [stdout]    |
[INFO] [stdout] 96 | struct ReadFileError {
[INFO] [stdout]    |        ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `tongue` is never read
[INFO] [stdout]    --> src/io.rs:260:5
[INFO] [stdout]     |
[INFO] [stdout] 254 | pub(crate) struct Interface {
[INFO] [stdout]     |                   --------- field in this struct
[INFO] [stdout] ...
[INFO] [stdout] 260 |     tongue: Rc<Tongue>,
[INFO] [stdout]     |     ^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `Interface` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `UrlError` is never constructed
[INFO] [stdout]    --> src/io.rs:353:8
[INFO] [stdout]     |
[INFO] [stdout] 353 | struct UrlError(String);
[INFO] [stdout]     |        ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `version` is never read
[INFO] [stdout]    --> src/io.rs:558:9
[INFO] [stdout]     |
[INFO] [stdout] 556 |     Open {
[INFO] [stdout]     |     ---- field in this variant
[INFO] [stdout] 557 |         /// The version of the document.
[INFO] [stdout] 558 |         version: i32,
[INFO] [stdout]     |         ^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `DocEdit` has derived impls for the traits `Debug` and `Clone`, but these are intentionally ignored during dead code analysis
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `DocChange` is never constructed
[INFO] [stdout]    --> src/io.rs:566:19
[INFO] [stdout]     |
[INFO] [stdout] 566 | pub(crate) struct DocChange {
[INFO] [stdout]     |                   ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `modifiers` is never read
[INFO] [stdout]    --> src/io/ui.rs:196:9
[INFO] [stdout]     |
[INFO] [stdout] 192 |     Key {
[INFO] [stdout]     |     --- field in this variant
[INFO] [stdout] ...
[INFO] [stdout] 196 |         modifiers: KeyModifiers,
[INFO] [stdout]     |         ^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `UserAction` has derived impls for the traits `Debug` and `Clone`, but these are intentionally ignored during dead code analysis
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 1m 37s
[INFO] [stderr] warning: the following packages contain code that will be rejected by a future version of Rust: quick-xml v0.22.0
[INFO] [stderr] note: to see what the problems were, use the option `--future-incompat-report`, or run `cargo report future-incompatibilities --id 1`
[INFO] running `Command { std: "docker" "inspect" "f2f6baefd61678fb082ae9ae4b3e0b7c8caccc579466f062a553d99c0a0ed02c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "f2f6baefd61678fb082ae9ae4b3e0b7c8caccc579466f062a553d99c0a0ed02c", kill_on_drop: false }`
[INFO] [stdout] f2f6baefd61678fb082ae9ae4b3e0b7c8caccc579466f062a553d99c0a0ed02c