[INFO] updating cached repository https://github.com/theotherphil/talks [INFO] running `"git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "-c" "remote.origin.fetch=refs/heads/*:refs/heads/*" "fetch" "origin" "--force" "--prune"` [INFO] running `"git" "rev-parse" "HEAD"` [INFO] [stdout] 1497aa68a0bcbf21110a11d10c7294aed9d43012 [INFO] checking theotherphil/talks against master#fdc0011561c6365c596dfd8fa1ef388162bc89c7 for pr-66504-1 [INFO] running `"git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Ftheotherphil%2Ftalks" "/workspace/builds/worker-10/source"` [INFO] [stderr] Cloning into '/workspace/builds/worker-10/source'... [INFO] [stderr] done. [INFO] validating manifest of git repo https://github.com/theotherphil/talks on toolchain fdc0011561c6365c596dfd8fa1ef388162bc89c7 [INFO] running `"/workspace/cargo-home/bin/cargo" "+fdc0011561c6365c596dfd8fa1ef388162bc89c7" "read-manifest" "--manifest-path" "Cargo.toml"` [INFO] started tweaking git repo https://github.com/theotherphil/talks [INFO] finished tweaking git repo https://github.com/theotherphil/talks [INFO] tweaked toml for git repo https://github.com/theotherphil/talks written to /workspace/builds/worker-10/source/Cargo.toml [INFO] crate git repo https://github.com/theotherphil/talks already has a lockfile, it will not be regenerated [INFO] running `"/workspace/cargo-home/bin/cargo" "+fdc0011561c6365c596dfd8fa1ef388162bc89c7" "fetch" "--locked" "--manifest-path" "Cargo.toml"` [INFO] [stderr] Blocking waiting for file lock on package cache [INFO] running `"docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-10/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-10/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" "MAP_USER_ID=0" "-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" "--network" "none" "rustops/crates-build-env" "/opt/rustwide/cargo-home/bin/cargo" "+fdc0011561c6365c596dfd8fa1ef388162bc89c7" "check" "--frozen" "--all" "--all-targets"` [INFO] [stdout] 70aa85df7b995859be64d67f1c35e4ae582b7d5a4f475c3b60650f26f654b8e7 [INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap. [INFO] running `"docker" "start" "-a" "70aa85df7b995859be64d67f1c35e4ae582b7d5a4f475c3b60650f26f654b8e7"` [INFO] [stderr] Compiling quote v0.6.13 [INFO] [stderr] Checking crossbeam-deque v0.6.3 [INFO] [stderr] Checking pulldown-cmark v0.6.0 [INFO] [stderr] Compiling syn v0.15.39 [INFO] [stderr] Checking rayon-core v1.5.0 [INFO] [stderr] Checking rayon v1.1.0 [INFO] [stderr] Compiling serde_derive v1.0.97 [INFO] [stderr] Checking serde v1.0.97 [INFO] [stderr] Checking serde_json v1.0.40 [INFO] [stderr] Checking talks v0.1.0 (/opt/rustwide/workdir) [INFO] [stderr] warning: unused import: `html` [INFO] [stderr] --> src/lib.rs:9:39 [INFO] [stderr] | [INFO] [stderr] 9 | use pulldown_cmark::{Parser, Options, html, Event, Tag}; [INFO] [stderr] | ^^^^ [INFO] [stderr] | [INFO] [stderr] = note: `#[warn(unused_imports)]` on by default [INFO] [stderr] [INFO] [stderr] warning: unused variable: `w` [INFO] [stderr] --> src/lib.rs:218:56 [INFO] [stderr] | [INFO] [stderr] 218 | fn render<'a, W: Write, I: Iterator>>(w: &mut W, iter: I) { [INFO] [stderr] | ^ help: consider prefixing with an underscore: `_w` [INFO] [stderr] | [INFO] [stderr] = note: `#[warn(unused_variables)]` on by default [INFO] [stderr] [INFO] [stderr] warning: function is never used: `split_markdown` [INFO] [stderr] --> src/lib.rs:163:4 [INFO] [stderr] | [INFO] [stderr] 163 | fn split_markdown<'a>(input: &'a str, sections: &[&str]) -> Vec>> { [INFO] [stderr] | ^^^^^^^^^^^^^^ [INFO] [stderr] | [INFO] [stderr] = note: `#[warn(dead_code)]` on by default [INFO] [stderr] [INFO] [stderr] warning: function is never used: `render` [INFO] [stderr] --> src/lib.rs:218:4 [INFO] [stderr] | [INFO] [stderr] 218 | fn render<'a, W: Write, I: Iterator>>(w: &mut W, iter: I) { [INFO] [stderr] | ^^^^^^ [INFO] [stderr] [INFO] [stderr] warning: function is never used: `push_header` [INFO] [stderr] --> src/lib.rs:294:4 [INFO] [stderr] | [INFO] [stderr] 294 | fn push_header<'a>(out: &mut Vec>, level: u32, text: &pulldown_cmark::CowStr<'a>) { [INFO] [stderr] | ^^^^^^^^^^^ [INFO] [stderr] [INFO] [stderr] warning: unused variable: `w` [INFO] [stderr] --> src/lib.rs:218:56 [INFO] [stderr] | [INFO] [stderr] 218 | fn render<'a, W: Write, I: Iterator>>(w: &mut W, iter: I) { [INFO] [stderr] | ^ help: consider prefixing with an underscore: `_w` [INFO] [stderr] | [INFO] [stderr] = note: `#[warn(unused_variables)]` on by default [INFO] [stderr] [INFO] [stderr] warning: function is never used: `render` [INFO] [stderr] --> src/lib.rs:218:4 [INFO] [stderr] | [INFO] [stderr] 218 | fn render<'a, W: Write, I: Iterator>>(w: &mut W, iter: I) { [INFO] [stderr] | ^^^^^^ [INFO] [stderr] | [INFO] [stderr] = note: `#[warn(dead_code)]` on by default [INFO] [stderr] [INFO] [stderr] error[E0502]: cannot borrow `xs` as mutable because it is also borrowed as immutable [INFO] [stderr] --> examples/iterator_invalidation.rs:5:5 [INFO] [stderr] | [INFO] [stderr] 4 | let x = &xs[0]; [INFO] [stderr] | -- immutable borrow occurs here [INFO] [stderr] 5 | xs.push(4); [INFO] [stderr] | ^^^^^^^^^^ mutable borrow occurs here [INFO] [stderr] 6 | println!("{}", x); [INFO] [stderr] | - immutable borrow later used here [INFO] [stderr] [INFO] [stderr] error: aborting due to previous error [INFO] [stderr] [INFO] [stderr] For more information about this error, try `rustc --explain E0502`. [INFO] [stderr] error: could not compile `talks`. [INFO] [stderr] warning: build failed, waiting for other jobs to finish... [INFO] [stderr] error: build failed [INFO] running `"docker" "inspect" "70aa85df7b995859be64d67f1c35e4ae582b7d5a4f475c3b60650f26f654b8e7"` [INFO] running `"docker" "rm" "-f" "70aa85df7b995859be64d67f1c35e4ae582b7d5a4f475c3b60650f26f654b8e7"` [INFO] [stdout] 70aa85df7b995859be64d67f1c35e4ae582b7d5a4f475c3b60650f26f654b8e7