[INFO] updating cached repository ian-h-chamberlain/borrowck_examples
[INFO] running `"git" "fetch" "--all"`
[INFO] [stdout] Fetching origin
[INFO] [stderr] From git://github.com/ian-h-chamberlain/borrowck_examples
[INFO] [stderr]  * branch            HEAD       -> FETCH_HEAD
[INFO] running `"git" "clone" "work/cache/sources/gh/ian-h-chamberlain/borrowck_examples" "work/ex/pr-63376/sources/master#60960a260f7b5c695fd0717311d72ce62dd4eb43/gh/ian-h-chamberlain/borrowck_examples"`
[INFO] [stderr] Cloning into 'work/ex/pr-63376/sources/master#60960a260f7b5c695fd0717311d72ce62dd4eb43/gh/ian-h-chamberlain/borrowck_examples'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/ian-h-chamberlain/borrowck_examples" "work/ex/pr-63376/sources/try#266783e4e09e4e9d5307c1c8e695659c58bbcac7/gh/ian-h-chamberlain/borrowck_examples"`
[INFO] [stderr] Cloning into 'work/ex/pr-63376/sources/try#266783e4e09e4e9d5307c1c8e695659c58bbcac7/gh/ian-h-chamberlain/borrowck_examples'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] 3c974e3a8d2cc0852e9a9f3c04bbf9d21b8e11ac
[INFO] sha for GitHub repo ian-h-chamberlain/borrowck_examples: 3c974e3a8d2cc0852e9a9f3c04bbf9d21b8e11ac
[INFO] validating manifest of ian-h-chamberlain/borrowck_examples on toolchain master#60960a260f7b5c695fd0717311d72ce62dd4eb43
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+60960a260f7b5c695fd0717311d72ce62dd4eb43-alt" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] validating manifest of ian-h-chamberlain/borrowck_examples on toolchain try#266783e4e09e4e9d5307c1c8e695659c58bbcac7
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+266783e4e09e4e9d5307c1c8e695659c58bbcac7-alt" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started frobbing ian-h-chamberlain/borrowck_examples
[INFO] finished frobbing ian-h-chamberlain/borrowck_examples
[INFO] frobbed toml for ian-h-chamberlain/borrowck_examples written to work/ex/pr-63376/sources/master#60960a260f7b5c695fd0717311d72ce62dd4eb43/gh/ian-h-chamberlain/borrowck_examples/Cargo.toml
[INFO] started frobbing ian-h-chamberlain/borrowck_examples
[INFO] finished frobbing ian-h-chamberlain/borrowck_examples
[INFO] frobbed toml for ian-h-chamberlain/borrowck_examples written to work/ex/pr-63376/sources/try#266783e4e09e4e9d5307c1c8e695659c58bbcac7/gh/ian-h-chamberlain/borrowck_examples/Cargo.toml
[INFO] crate ian-h-chamberlain/borrowck_examples already has a lockfile, it will not be regenerated
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+60960a260f7b5c695fd0717311d72ce62dd4eb43-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+266783e4e09e4e9d5307c1c8e695659c58bbcac7-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] checking ian-h-chamberlain/borrowck_examples against try#266783e4e09e4e9d5307c1c8e695659c58bbcac7 for pr-63376
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-63376/worker-7/try#266783e4e09e4e9d5307c1c8e695659c58bbcac7:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/pr-63376/sources/try#266783e4e09e4e9d5307c1c8e695659c58bbcac7/gh/ian-h-chamberlain/borrowck_examples:/opt/crater/workdir:ro,Z" "-v" "/mnt/big/crater/work/local/cargo-home:/opt/crater/cargo-home:ro,Z" "-v" "/mnt/big/crater/work/local/rustup-home:/opt/crater/rustup-home:ro,Z" "-e" "USER_ID=1000" "-e" "SOURCE_DIR=/opt/crater/workdir" "-e" "MAP_USER_ID=1000" "-e" "CARGO_TARGET_DIR=/opt/crater/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-e" "CARGO_HOME=/opt/crater/cargo-home" "-e" "RUSTUP_HOME=/opt/crater/rustup-home" "-w" "/opt/crater/workdir" "-m" "1536M" "--network" "none" "rustops/crates-build-env" "/opt/crater/cargo-home/bin/cargo" "+266783e4e09e4e9d5307c1c8e695659c58bbcac7-alt" "check" "--frozen" "--all" "--all-targets"`
[INFO] [stdout] 3d6f909fe89bad0706cd2fe60ad0b25b608ddab65635c2ce1cdf05a7ed50d047
[INFO] running `"docker" "start" "-a" "3d6f909fe89bad0706cd2fe60ad0b25b608ddab65635c2ce1cdf05a7ed50d047"`
[INFO] [stderr]     Checking borrowck_lightning_talk v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] error[E0499]: cannot borrow `foo` as mutable more than once at a time
[INFO] [stderr]   --> src/borrow.rs:10:19
[INFO] [stderr]    |
[INFO] [stderr] 6  |     let bar = &mut foo;
[INFO] [stderr]    |               -------- first mutable borrow occurs here
[INFO] [stderr] ...
[INFO] [stderr] 10 |         let baz = &mut foo;
[INFO] [stderr]    |                   ^^^^^^^^ second mutable borrow occurs here
[INFO] [stderr] ...
[INFO] [stderr] 15 |     *bar += 1;
[INFO] [stderr]    |     --------- first borrow later used here
[INFO] [stderr] 
[INFO] [stderr] error[E0502]: cannot borrow `my_string` as immutable because it is also borrowed as mutable
[INFO] [stderr]   --> src/borrow.rs:26:16
[INFO] [stderr]    |
[INFO] [stderr] 23 |     let ref1 = &mut my_string;
[INFO] [stderr]    |                -------------- mutable borrow occurs here
[INFO] [stderr] ...
[INFO] [stderr] 26 |     let ref2 = &my_string;
[INFO] [stderr]    |                ^^^^^^^^^^ immutable borrow occurs here
[INFO] [stderr] 27 | 
[INFO] [stderr] 28 |     *ref1 = String::from("foo");
[INFO] [stderr]    |     ----- mutable borrow later used here
[INFO] [stderr] 
[INFO] [stderr] error[E0502]: cannot borrow `my_string` as mutable because it is also borrowed as immutable
[INFO] [stderr]   --> src/borrow.rs:40:16
[INFO] [stderr]    |
[INFO] [stderr] 36 |     let ref1 = &my_string;
[INFO] [stderr]    |                ---------- immutable borrow occurs here
[INFO] [stderr] ...
[INFO] [stderr] 40 |     let ref3 = &mut my_string;
[INFO] [stderr]    |                ^^^^^^^^^^^^^^ mutable borrow occurs here
[INFO] [stderr] ...
[INFO] [stderr] 44 |     println!("Example 3: {}, {}", *ref1, *ref2);
[INFO] [stderr]    |                                   ----- immutable borrow later used here
[INFO] [stderr] 
[INFO] [stderr] error[E0597]: `my_string` does not live long enough
[INFO] [stderr]   --> src/borrow.rs:53:16
[INFO] [stderr]    |
[INFO] [stderr] 53 |         ref1 = &mut my_string;
[INFO] [stderr]    |                ^^^^^^^^^^^^^^ borrowed value does not live long enough
[INFO] [stderr] 54 |     }
[INFO] [stderr]    |     - `my_string` dropped here while still borrowed
[INFO] [stderr] 55 | 
[INFO] [stderr] 56 |     *ref1 = String::from("my fair lady");
[INFO] [stderr]    |     ----- borrow later used here
[INFO] [stderr] 
[INFO] [stderr] error: aborting due to 4 previous errors
[INFO] [stderr] 
[INFO] [stderr] Some errors have detailed explanations: E0499, E0502, E0597.
[INFO] [stderr] For more information about an error, try `rustc --explain E0499`.
[INFO] [stderr] error: Could not compile `borrowck_lightning_talk`.
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stderr] error[E0499]: cannot borrow `foo` as mutable more than once at a time
[INFO] [stderr]   --> src/borrow.rs:10:19
[INFO] [stderr]    |
[INFO] [stderr] 6  |     let bar = &mut foo;
[INFO] [stderr]    |               -------- first mutable borrow occurs here
[INFO] [stderr] ...
[INFO] [stderr] 10 |         let baz = &mut foo;
[INFO] [stderr]    |                   ^^^^^^^^ second mutable borrow occurs here
[INFO] [stderr] ...
[INFO] [stderr] 15 |     *bar += 1;
[INFO] [stderr]    |     --------- first borrow later used here
[INFO] [stderr] 
[INFO] [stderr] error[E0502]: cannot borrow `my_string` as immutable because it is also borrowed as mutable
[INFO] [stderr]   --> src/borrow.rs:26:16
[INFO] [stderr]    |
[INFO] [stderr] 23 |     let ref1 = &mut my_string;
[INFO] [stderr]    |                -------------- mutable borrow occurs here
[INFO] [stderr] ...
[INFO] [stderr] 26 |     let ref2 = &my_string;
[INFO] [stderr]    |                ^^^^^^^^^^ immutable borrow occurs here
[INFO] [stderr] 27 | 
[INFO] [stderr] 28 |     *ref1 = String::from("foo");
[INFO] [stderr]    |     ----- mutable borrow later used here
[INFO] [stderr] 
[INFO] [stderr] error[E0502]: cannot borrow `my_string` as mutable because it is also borrowed as immutable
[INFO] [stderr]   --> src/borrow.rs:40:16
[INFO] [stderr]    |
[INFO] [stderr] 36 |     let ref1 = &my_string;
[INFO] [stderr]    |                ---------- immutable borrow occurs here
[INFO] [stderr] ...
[INFO] [stderr] 40 |     let ref3 = &mut my_string;
[INFO] [stderr]    |                ^^^^^^^^^^^^^^ mutable borrow occurs here
[INFO] [stderr] ...
[INFO] [stderr] 44 |     println!("Example 3: {}, {}", *ref1, *ref2);
[INFO] [stderr]    |                                   ----- immutable borrow later used here
[INFO] [stderr] 
[INFO] [stderr] error[E0597]: `my_string` does not live long enough
[INFO] [stderr]   --> src/borrow.rs:53:16
[INFO] [stderr]    |
[INFO] [stderr] 53 |         ref1 = &mut my_string;
[INFO] [stderr]    |                ^^^^^^^^^^^^^^ borrowed value does not live long enough
[INFO] [stderr] 54 |     }
[INFO] [stderr]    |     - `my_string` dropped here while still borrowed
[INFO] [stderr] 55 | 
[INFO] [stderr] 56 |     *ref1 = String::from("my fair lady");
[INFO] [stderr]    |     ----- borrow later used here
[INFO] [stderr] 
[INFO] [stderr] error: aborting due to 4 previous errors
[INFO] [stderr] 
[INFO] [stderr] Some errors have detailed explanations: E0499, E0502, E0597.
[INFO] [stderr] For more information about an error, try `rustc --explain E0499`.
[INFO] [stderr] error: Could not compile `borrowck_lightning_talk`.
[INFO] [stderr] 
[INFO] [stderr] To learn more, run the command again with --verbose.
[INFO] running `"docker" "inspect" "3d6f909fe89bad0706cd2fe60ad0b25b608ddab65635c2ce1cdf05a7ed50d047"`
[INFO] running `"docker" "rm" "-f" "3d6f909fe89bad0706cd2fe60ad0b25b608ddab65635c2ce1cdf05a7ed50d047"`
[INFO] [stdout] 3d6f909fe89bad0706cd2fe60ad0b25b608ddab65635c2ce1cdf05a7ed50d047