[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 try#1bd50d4315eb15970d395b6be5823f9384707693 for pr-140151
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fian-h-chamberlain%2Fborrowck_examples" "/workspace/builds/worker-7-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-7-tc2/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/ian-h-chamberlain/borrowck_examples on toolchain 1bd50d4315eb15970d395b6be5823f9384707693
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1bd50d4315eb15970d395b6be5823f9384707693" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", 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-7-tc2/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: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1bd50d4315eb15970d395b6be5823f9384707693" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc2/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" "+1bd50d4315eb15970d395b6be5823f9384707693" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 481538916ccfd1db15c732d6a4c5e76f7ae185dd3d15088a52416b6d69cc922f
[INFO] running `Command { std: "docker" "start" "-a" "481538916ccfd1db15c732d6a4c5e76f7ae185dd3d15088a52416b6d69cc922f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "481538916ccfd1db15c732d6a4c5e76f7ae185dd3d15088a52416b6d69cc922f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "481538916ccfd1db15c732d6a4c5e76f7ae185dd3d15088a52416b6d69cc922f", kill_on_drop: false }`
[INFO] [stdout] 481538916ccfd1db15c732d6a4c5e76f7ae185dd3d15088a52416b6d69cc922f
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc2/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" "RUSTDOCFLAGS=--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" "ghcr.io/rust-lang/crates-build-env/linux@sha256:b0b074c097205a61b89e8ad263052f976b2b332c4dc5f02aef1fe52501660d6e" "/opt/rustwide/cargo-home/bin/cargo" "+1bd50d4315eb15970d395b6be5823f9384707693" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] ad29ff9b5681186d41a3876b9369bae61b03424819a7db72b79e762f75cc5f7b
[INFO] running `Command { std: "docker" "start" "-a" "ad29ff9b5681186d41a3876b9369bae61b03424819a7db72b79e762f75cc5f7b", kill_on_drop: false }`
[INFO] [stderr]     Checking lazy_static v1.2.0
[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[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 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[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] 50 |         let mut my_string = String::from("hello");
[INFO] [stdout]    |             ------------- binding `my_string` declared here
[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[E0597]: `my_string` does not live long enough
[INFO] [stdout]   --> src/borrow.rs:53:16
[INFO] [stdout]    |
[INFO] [stdout] 50 |         let mut my_string = String::from("hello");
[INFO] [stdout]    |             ------------- binding `my_string` declared here
[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] 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] 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` (bin "borrowck_lightning_talk") due to 4 previous errors
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stderr] error: could not compile `borrowck_lightning_talk` (bin "borrowck_lightning_talk" test) due to 4 previous errors
[INFO] running `Command { std: "docker" "inspect" "ad29ff9b5681186d41a3876b9369bae61b03424819a7db72b79e762f75cc5f7b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "ad29ff9b5681186d41a3876b9369bae61b03424819a7db72b79e762f75cc5f7b", kill_on_drop: false }`
[INFO] [stdout] ad29ff9b5681186d41a3876b9369bae61b03424819a7db72b79e762f75cc5f7b
