[INFO] updating cached repository apwadkar/data-structures-rs
[INFO] running `"git" "fetch" "--all"`
[INFO] [stdout] Fetching origin
[INFO] [stderr] From git://github.com/apwadkar/data-structures-rs
[INFO] [stderr]  * branch            HEAD       -> FETCH_HEAD
[INFO] running `"git" "clone" "work/cache/sources/gh/apwadkar/data-structures-rs" "work/ex/pr-60039-1/sources/master#e305df1846a6d985315917ae0c81b74af8b4e641/gh/apwadkar/data-structures-rs"`
[INFO] [stderr] Cloning into 'work/ex/pr-60039-1/sources/master#e305df1846a6d985315917ae0c81b74af8b4e641/gh/apwadkar/data-structures-rs'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/apwadkar/data-structures-rs" "work/ex/pr-60039-1/sources/try#99a7498759a22b5684caf798a98b7e90ad9d2443/gh/apwadkar/data-structures-rs"`
[INFO] [stderr] Cloning into 'work/ex/pr-60039-1/sources/try#99a7498759a22b5684caf798a98b7e90ad9d2443/gh/apwadkar/data-structures-rs'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] d3e32c574f7d80f93aeb9ce79938ca710d05c4e4
[INFO] sha for GitHub repo apwadkar/data-structures-rs: d3e32c574f7d80f93aeb9ce79938ca710d05c4e4
[INFO] validating manifest of apwadkar/data-structures-rs on toolchain master#e305df1846a6d985315917ae0c81b74af8b4e641
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+e305df1846a6d985315917ae0c81b74af8b4e641-alt" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] validating manifest of apwadkar/data-structures-rs on toolchain try#99a7498759a22b5684caf798a98b7e90ad9d2443
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+99a7498759a22b5684caf798a98b7e90ad9d2443-alt" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started frobbing apwadkar/data-structures-rs
[INFO] finished frobbing apwadkar/data-structures-rs
[INFO] frobbed toml for apwadkar/data-structures-rs written to work/ex/pr-60039-1/sources/master#e305df1846a6d985315917ae0c81b74af8b4e641/gh/apwadkar/data-structures-rs/Cargo.toml
[INFO] started frobbing apwadkar/data-structures-rs
[INFO] finished frobbing apwadkar/data-structures-rs
[INFO] frobbed toml for apwadkar/data-structures-rs written to work/ex/pr-60039-1/sources/try#99a7498759a22b5684caf798a98b7e90ad9d2443/gh/apwadkar/data-structures-rs/Cargo.toml
[INFO] crate apwadkar/data-structures-rs already has a lockfile, it will not be regenerated
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+e305df1846a6d985315917ae0c81b74af8b4e641-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+99a7498759a22b5684caf798a98b7e90ad9d2443-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] checking apwadkar/data-structures-rs against master#e305df1846a6d985315917ae0c81b74af8b4e641 for pr-60039-1
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-60039-1/worker-2/master#e305df1846a6d985315917ae0c81b74af8b4e641:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/pr-60039-1/sources/master#e305df1846a6d985315917ae0c81b74af8b4e641/gh/apwadkar/data-structures-rs:/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" "+e305df1846a6d985315917ae0c81b74af8b4e641-alt" "check" "--frozen" "--all" "--all-targets"`
[INFO] [stdout] fa20730ada0ca7b89a4b265c8311e9827d96db6df53faed78b9d094fa82d6c74
[INFO] running `"docker" "start" "-a" "fa20730ada0ca7b89a4b265c8311e9827d96db6df53faed78b9d094fa82d6c74"`
[INFO] [stderr]     Checking data-structures v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] warning: unused import: `avltree::*`
[INFO] [stderr]  --> src/main.rs:6:5
[INFO] [stderr]   |
[INFO] [stderr] 6 | use avltree::*;
[INFO] [stderr]   |     ^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: #[warn(unused_imports)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `avltree::*`
[INFO] [stderr]  --> src/main.rs:6:5
[INFO] [stderr]   |
[INFO] [stderr] 6 | use avltree::*;
[INFO] [stderr]   |     ^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: #[warn(unused_imports)] on by default
[INFO] [stderr] 
[INFO] [stderr] error[E0507]: cannot move out of borrowed content
[INFO] [stderr]   --> src/avltree.rs:34:22
[INFO] [stderr]    |
[INFO] [stderr] 34 |         let mut x = &y.left.unwrap();
[INFO] [stderr]    |                      ^^^^^^ cannot move out of borrowed content
[INFO] [stderr] 
[INFO] [stderr] error[E0507]: cannot move out of borrowed content
[INFO] [stderr]   --> src/avltree.rs:35:18
[INFO] [stderr]    |
[INFO] [stderr] 35 |         let T2 = x.right.unwrap();
[INFO] [stderr]    |                  ^^^^^^^ cannot move out of borrowed content
[INFO] [stderr] 
[INFO] [stderr] error[E0594]: cannot assign to `x.right` which is behind a `&` reference
[INFO] [stderr]   --> src/avltree.rs:37:9
[INFO] [stderr]    |
[INFO] [stderr] 34 |         let mut x = &y.left.unwrap();
[INFO] [stderr]    |                     ---------------- help: consider changing this to be a mutable reference: `&mut y.left.unwrap()`
[INFO] [stderr] ...
[INFO] [stderr] 37 |         x.right = Some(Box::new(*y));
[INFO] [stderr]    |         ^^^^^^^ `x` is a `&` reference, so the data it refers to cannot be written
[INFO] [stderr] 
[INFO] [stderr] error[E0507]: cannot move out of borrowed content
[INFO] [stderr]   --> src/avltree.rs:37:33
[INFO] [stderr]    |
[INFO] [stderr] 37 |         x.right = Some(Box::new(*y));
[INFO] [stderr]    |                                 ^^ cannot move out of borrowed content
[INFO] [stderr] 
[INFO] [stderr] error[E0594]: cannot assign to `x.height` which is behind a `&` reference
[INFO] [stderr]   --> src/avltree.rs:41:9
[INFO] [stderr]    |
[INFO] [stderr] 34 |         let mut x = &y.left.unwrap();
[INFO] [stderr]    |                     ---------------- help: consider changing this to be a mutable reference: `&mut y.left.unwrap()`
[INFO] [stderr] ...
[INFO] [stderr] 41 |         x.height = max(height(&x.left), height(&x.right)) + 1;
[INFO] [stderr]    |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ `x` is a `&` reference, so the data it refers to cannot be written
[INFO] [stderr] 
[INFO] [stderr] error: aborting due to 5 previous errors
[INFO] [stderr] 
[INFO] [stderr] For more information about this error, try `rustc --explain E0507`.
[INFO] [stderr] error[E0507]: cannot move out of borrowed content
[INFO] [stderr]   --> src/avltree.rs:34:22
[INFO] [stderr]    |
[INFO] [stderr] 34 |         let mut x = &y.left.unwrap();
[INFO] [stderr]    |                      ^^^^^^ cannot move out of borrowed content
[INFO] [stderr] 
[INFO] [stderr] error[E0507]: cannot move out of borrowed content
[INFO] [stderr]   --> src/avltree.rs:35:18
[INFO] [stderr]    |
[INFO] [stderr] 35 |         let T2 = x.right.unwrap();
[INFO] [stderr]    |                  ^^^^^^^ cannot move out of borrowed content
[INFO] [stderr] 
[INFO] [stderr] error[E0594]: cannot assign to `x.right` which is behind a `&` reference
[INFO] [stderr]   --> src/avltree.rs:37:9
[INFO] [stderr]    |
[INFO] [stderr] 34 |         let mut x = &y.left.unwrap();
[INFO] [stderr]    |                     ---------------- help: consider changing this to be a mutable reference: `&mut y.left.unwrap()`
[INFO] [stderr] ...
[INFO] [stderr] 37 |         x.right = Some(Box::new(*y));
[INFO] [stderr]    |         ^^^^^^^ `x` is a `&` reference, so the data it refers to cannot be written
[INFO] [stderr] 
[INFO] [stderr] error[E0507]: cannot move out of borrowed content
[INFO] [stderr]   --> src/avltree.rs:37:33
[INFO] [stderr]    |
[INFO] [stderr] 37 |         x.right = Some(Box::new(*y));
[INFO] [stderr]    |                                 ^^ cannot move out of borrowed content
[INFO] [stderr] 
[INFO] [stderr] error[E0594]: cannot assign to `x.height` which is behind a `&` reference
[INFO] [stderr]   --> src/avltree.rs:41:9
[INFO] [stderr]    |
[INFO] [stderr] 34 |         let mut x = &y.left.unwrap();
[INFO] [stderr]    |                     ---------------- help: consider changing this to be a mutable reference: `&mut y.left.unwrap()`
[INFO] [stderr] ...
[INFO] [stderr] 41 |         x.height = max(height(&x.left), height(&x.right)) + 1;
[INFO] [stderr]    |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ `x` is a `&` reference, so the data it refers to cannot be written
[INFO] [stderr] 
[INFO] [stderr] error: Could not compile `data-structures`.
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stderr] error: aborting due to 5 previous errors
[INFO] [stderr] 
[INFO] [stderr] For more information about this error, try `rustc --explain E0507`.
[INFO] [stderr] error: Could not compile `data-structures`.
[INFO] [stderr] 
[INFO] [stderr] To learn more, run the command again with --verbose.
[INFO] running `"docker" "inspect" "fa20730ada0ca7b89a4b265c8311e9827d96db6df53faed78b9d094fa82d6c74"`
[INFO] running `"docker" "rm" "-f" "fa20730ada0ca7b89a4b265c8311e9827d96db6df53faed78b9d094fa82d6c74"`
[INFO] [stdout] fa20730ada0ca7b89a4b265c8311e9827d96db6df53faed78b9d094fa82d6c74