[INFO] cloning repository https://github.com/ian-h-chamberlain/borrowck_examples [INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/ian-h-chamberlain/borrowck_examples" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fian-h-chamberlain%2Fborrowck_examples", kill_on_drop: false }` [INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fian-h-chamberlain%2Fborrowck_examples'... [INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }` [INFO] [stdout] 3c974e3a8d2cc0852e9a9f3c04bbf9d21b8e11ac [INFO] checking ian-h-chamberlain/borrowck_examples against master#2ad5292aea6328113b55968b4322528d48261316 for pr-80243 [INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fian-h-chamberlain%2Fborrowck_examples" "/workspace/builds/worker-12/source", kill_on_drop: false }` [INFO] [stderr] Cloning into '/workspace/builds/worker-12/source'... [INFO] [stderr] done. [INFO] validating manifest of git repo https://github.com/ian-h-chamberlain/borrowck_examples on toolchain 2ad5292aea6328113b55968b4322528d48261316 [INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+2ad5292aea6328113b55968b4322528d48261316" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }` [INFO] started tweaking git repo https://github.com/ian-h-chamberlain/borrowck_examples [INFO] finished tweaking git repo https://github.com/ian-h-chamberlain/borrowck_examples [INFO] tweaked toml for git repo https://github.com/ian-h-chamberlain/borrowck_examples written to /workspace/builds/worker-12/source/Cargo.toml [INFO] crate git repo https://github.com/ian-h-chamberlain/borrowck_examples already has a lockfile, it will not be regenerated [INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+2ad5292aea6328113b55968b4322528d48261316" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }` [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/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:b8eeb62f26c39b23691079a6cb6de528d8e88b4d71a8f6b1d30f8ba7d9c16de9" "/opt/rustwide/cargo-home/bin/cargo" "+2ad5292aea6328113b55968b4322528d48261316" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }` [INFO] [stdout] b4e77fbe888f7df8e11745ea8b6f58707a7fa7f158349e1f22f6617292ffd5bf [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" "b4e77fbe888f7df8e11745ea8b6f58707a7fa7f158349e1f22f6617292ffd5bf", kill_on_drop: false }` [INFO] running `Command { std: "docker" "inspect" "b4e77fbe888f7df8e11745ea8b6f58707a7fa7f158349e1f22f6617292ffd5bf", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "b4e77fbe888f7df8e11745ea8b6f58707a7fa7f158349e1f22f6617292ffd5bf", kill_on_drop: false }` [INFO] [stdout] b4e77fbe888f7df8e11745ea8b6f58707a7fa7f158349e1f22f6617292ffd5bf [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/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:b8eeb62f26c39b23691079a6cb6de528d8e88b4d71a8f6b1d30f8ba7d9c16de9" "/opt/rustwide/cargo-home/bin/cargo" "+2ad5292aea6328113b55968b4322528d48261316" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }` [INFO] [stdout] 4a7852980aaa7fa42634433095ea83951741494f1e5db422fb3f79c43d77669d [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" "4a7852980aaa7fa42634433095ea83951741494f1e5db422fb3f79c43d77669d", kill_on_drop: false }` [INFO] [stderr] Checking borrowck_lightning_talk v0.1.0 (/opt/rustwide/workdir) [INFO] [stdout] error[E0499]: cannot borrow `foo` as mutable more than once at a time [INFO] [stdout] --> src/borrow.rs:10:19 [INFO] [stdout] | [INFO] [stdout] 6 | let bar = &mut foo; [INFO] [stdout] | -------- first mutable borrow occurs here [INFO] [stdout] ... [INFO] [stdout] 10 | let baz = &mut foo; [INFO] [stdout] | ^^^^^^^^ second mutable borrow occurs here [INFO] [stdout] ... [INFO] [stdout] 15 | *bar += 1; [INFO] [stdout] | --------- first borrow later used here [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] error[E0502]: cannot borrow `my_string` as immutable because it is also borrowed as mutable [INFO] [stdout] --> src/borrow.rs:26:16 [INFO] [stdout] | [INFO] [stdout] 23 | let ref1 = &mut my_string; [INFO] [stdout] | -------------- mutable borrow occurs here [INFO] [stdout] ... [INFO] [stdout] 26 | let ref2 = &my_string; [INFO] [stdout] | ^^^^^^^^^^ immutable borrow occurs here [INFO] [stdout] 27 | [INFO] [stdout] 28 | *ref1 = String::from("foo"); [INFO] [stdout] | ----- mutable borrow later used here [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] error[E0502]: cannot borrow `my_string` as mutable because it is also borrowed as immutable [INFO] [stdout] --> src/borrow.rs:40:16 [INFO] [stdout] | [INFO] [stdout] 36 | let ref1 = &my_string; [INFO] [stdout] | ---------- immutable borrow occurs here [INFO] [stdout] ... [INFO] [stdout] 40 | let ref3 = &mut my_string; [INFO] [stdout] | ^^^^^^^^^^^^^^ mutable borrow occurs here [INFO] [stdout] ... [INFO] [stdout] 44 | println!("Example 3: {}, {}", *ref1, *ref2); [INFO] [stdout] | ----- immutable borrow later used here [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] error[E0597]: `my_string` does not live long enough [INFO] [stdout] --> src/borrow.rs:53:16 [INFO] [stdout] | [INFO] [stdout] 53 | ref1 = &mut my_string; [INFO] [stdout] | ^^^^^^^^^^^^^^ borrowed value does not live long enough [INFO] [stdout] 54 | } [INFO] [stdout] | - `my_string` dropped here while still borrowed [INFO] [stdout] 55 | [INFO] [stdout] 56 | *ref1 = String::from("my fair lady"); [INFO] [stdout] | ----- borrow later used here [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] error: aborting due to 4 previous errors [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] Some errors have detailed explanations: E0499, E0502, E0597. [INFO] [stdout] [INFO] [stdout] For more information about an error, try `rustc --explain E0499`. [INFO] [stdout] [INFO] [stdout] error[E0499]: cannot borrow `foo` as mutable more than once at a time [INFO] [stdout] --> src/borrow.rs:10:19 [INFO] [stdout] | [INFO] [stdout] 6 | let bar = &mut foo; [INFO] [stdout] | -------- first mutable borrow occurs here [INFO] [stdout] ... [INFO] [stdout] 10 | let baz = &mut foo; [INFO] [stdout] | ^^^^^^^^ second mutable borrow occurs here [INFO] [stdout] ... [INFO] [stdout] 15 | *bar += 1; [INFO] [stdout] | --------- first borrow later used here [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] error[E0502]: cannot borrow `my_string` as immutable because it is also borrowed as mutable [INFO] [stdout] --> src/borrow.rs:26:16 [INFO] [stdout] | [INFO] [stdout] 23 | let ref1 = &mut my_string; [INFO] [stdout] | -------------- mutable borrow occurs here [INFO] [stdout] ... [INFO] [stdout] 26 | let ref2 = &my_string; [INFO] [stdout] | ^^^^^^^^^^ immutable borrow occurs here [INFO] [stdout] 27 | [INFO] [stdout] 28 | *ref1 = String::from("foo"); [INFO] [stdout] | ----- mutable borrow later used here [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] error[E0502]: cannot borrow `my_string` as mutable because it is also borrowed as immutable [INFO] [stdout] --> src/borrow.rs:40:16 [INFO] [stdout] | [INFO] [stdout] 36 | let ref1 = &my_string; [INFO] [stdout] | ---------- immutable borrow occurs here [INFO] [stdout] ... [INFO] [stdout] 40 | let ref3 = &mut my_string; [INFO] [stdout] | ^^^^^^^^^^^^^^ mutable borrow occurs here [INFO] [stdout] ... [INFO] [stdout] 44 | println!("Example 3: {}, {}", *ref1, *ref2); [INFO] [stdout] | ----- immutable borrow later used here [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] error[E0597]: `my_string` does not live long enough [INFO] [stdout] --> src/borrow.rs:53:16 [INFO] [stdout] | [INFO] [stdout] 53 | ref1 = &mut my_string; [INFO] [stdout] | ^^^^^^^^^^^^^^ borrowed value does not live long enough [INFO] [stdout] 54 | } [INFO] [stdout] | - `my_string` dropped here while still borrowed [INFO] [stdout] 55 | [INFO] [stdout] 56 | *ref1 = String::from("my fair lady"); [INFO] [stdout] | ----- borrow later used here [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] error: aborting due to 4 previous errors [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] Some errors have detailed explanations: E0499, E0502, E0597. [INFO] [stdout] [INFO] [stdout] For more information about an error, try `rustc --explain E0499`. [INFO] [stdout] [INFO] [stderr] error: could not compile `borrowck_lightning_talk` [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" "4a7852980aaa7fa42634433095ea83951741494f1e5db422fb3f79c43d77669d", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "4a7852980aaa7fa42634433095ea83951741494f1e5db422fb3f79c43d77669d", kill_on_drop: false }` [INFO] [stdout] 4a7852980aaa7fa42634433095ea83951741494f1e5db422fb3f79c43d77669d