[INFO] fetching crate compt 2.1.0...
[INFO] testing compt-2.1.0 against 1.100.0-beta.1+cargoflags=--release for beta-release-1.100-2
[INFO] extracting crate compt 2.1.0 into /workspace/builds/worker-7-tc2/source
[INFO] started tweaking crates.io crate compt 2.1.0
[INFO] finished tweaking crates.io crate compt 2.1.0
[INFO] tweaked toml for crates.io crate compt 2.1.0 written to /workspace/builds/worker-7-tc2/source/Cargo.toml
[INFO] validating manifest of crates.io crate compt 2.1.0 on toolchain 1.100.0-beta.1
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1.100.0-beta.1" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate crates.io crate compt 2.1.0 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" "+1.100.0-beta.1" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc2/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc2/target:/opt/rustwide/target:rw,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" "-m" "1610612736" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:77db811e55d90add9212f6832c23229e3de5f1c1f9905e8cb07319ea15df73ac" "sleep" "infinity", kill_on_drop: false }`
[INFO] [stdout] 14e972eca5e86aa12d35500335bc22849d2e48e8e0d8ce9b2a929749d9e68fe1
[INFO] running `Command { std: "docker" "start" "14e972eca5e86aa12d35500335bc22849d2e48e8e0d8ce9b2a929749d9e68fe1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "14e972eca5e86aa12d35500335bc22849d2e48e8e0d8ce9b2a929749d9e68fe1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "exec" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-w" "/opt/rustwide/workdir" "--user" "0:0" "14e972eca5e86aa12d35500335bc22849d2e48e8e0d8ce9b2a929749d9e68fe1" "/opt/rustwide/cargo-home/bin/cargo" "+1.100.0-beta.1" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "14e972eca5e86aa12d35500335bc22849d2e48e8e0d8ce9b2a929749d9e68fe1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "exec" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=warn" "-e" "RUSTDOCFLAGS=--cap-lints=warn" "-w" "/opt/rustwide/workdir" "--user" "0:0" "14e972eca5e86aa12d35500335bc22849d2e48e8e0d8ce9b2a929749d9e68fe1" "/opt/rustwide/cargo-home/bin/cargo" "+1.100.0-beta.1" "build" "--frozen" "--message-format=json" "--release", kill_on_drop: false }`
[INFO] [stderr]    Compiling compt v2.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stdout]    --> src/dfs_order.rs:107:20
[INFO] [stdout]     |
[INFO] [stdout] 107 |     pub fn as_tree(&self) -> CompleteTree<T, D> {
[INFO] [stdout]     |                    ^^^^^     ^^^^^^^^^^^^^^^^^^ the same lifetime is hidden here
[INFO] [stdout]     |                    |
[INFO] [stdout]     |                    the lifetime is elided here
[INFO] [stdout]     |
[INFO] [stdout]     = help: the same lifetime is referred to in inconsistent ways, making the signature confusing
[INFO] [stdout]     = note: `#[warn(mismatched_lifetime_syntaxes)]` on by default
[INFO] [stdout] help: use `'_` for type paths
[INFO] [stdout]     |
[INFO] [stdout] 107 |     pub fn as_tree(&self) -> CompleteTree<'_, T, D> {
[INFO] [stdout]     |                                           +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stdout]    --> src/dfs_order.rs:114:24
[INFO] [stdout]     |
[INFO] [stdout] 114 |     pub fn as_tree_mut(&mut self) -> CompleteTreeMut<T, D> {
[INFO] [stdout]     |                        ^^^^^^^^^     ^^^^^^^^^^^^^^^^^^^^^ the same lifetime is hidden here
[INFO] [stdout]     |                        |
[INFO] [stdout]     |                        the lifetime is elided here
[INFO] [stdout]     |
[INFO] [stdout]     = help: the same lifetime is referred to in inconsistent ways, making the signature confusing
[INFO] [stdout] help: use `'_` for type paths
[INFO] [stdout]     |
[INFO] [stdout] 114 |     pub fn as_tree_mut(&mut self) -> CompleteTreeMut<'_, T, D> {
[INFO] [stdout]     |                                                      +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stdout]    --> src/dfs_order.rs:208:20
[INFO] [stdout]     |
[INFO] [stdout] 208 |     pub fn as_tree(&self) -> CompleteTree<T, D> {
[INFO] [stdout]     |                    ^^^^^     ^^^^^^^^^^^^^^^^^^ the same lifetime is hidden here
[INFO] [stdout]     |                    |
[INFO] [stdout]     |                    the lifetime is elided here
[INFO] [stdout]     |
[INFO] [stdout]     = help: the same lifetime is referred to in inconsistent ways, making the signature confusing
[INFO] [stdout] help: use `'_` for type paths
[INFO] [stdout]     |
[INFO] [stdout] 208 |     pub fn as_tree(&self) -> CompleteTree<'_, T, D> {
[INFO] [stdout]     |                                           +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stdout]    --> src/dfs_order.rs:215:23
[INFO] [stdout]     |
[INFO] [stdout] 215 |     pub fn borrow_mut(&mut self)->CompleteTreeMut<T,D>{
[INFO] [stdout]     |                       ^^^^^^^^^   ^^^^^^^^^^^^^^^^^^^^ the same lifetime is hidden here
[INFO] [stdout]     |                       |
[INFO] [stdout]     |                       the lifetime is elided here
[INFO] [stdout]     |
[INFO] [stdout]     = help: the same lifetime is referred to in inconsistent ways, making the signature confusing
[INFO] [stdout] help: use `'_` for type paths
[INFO] [stdout]     |
[INFO] [stdout] 215 |     pub fn borrow_mut(&mut self)->CompleteTreeMut<'_, T,D>{
[INFO] [stdout]     |                                                   +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stdout]    --> src/dfs_order.rs:260:19
[INFO] [stdout]     |
[INFO] [stdout] 260 |     pub fn borrow(&self)->CompleteTree<T,D>{
[INFO] [stdout]     |                   ^^^^^   ^^^^^^^^^^^^^^^^^ the same lifetime is hidden here
[INFO] [stdout]     |                   |
[INFO] [stdout]     |                   the lifetime is elided here
[INFO] [stdout]     |
[INFO] [stdout]     = help: the same lifetime is referred to in inconsistent ways, making the signature confusing
[INFO] [stdout] help: use `'_` for type paths
[INFO] [stdout]     |
[INFO] [stdout] 260 |     pub fn borrow(&self)->CompleteTree<'_, T,D>{
[INFO] [stdout]     |                                        +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stdout]    --> src/dfs_order.rs:305:19
[INFO] [stdout]     |
[INFO] [stdout] 305 |     pub fn borrow(&self) -> Vistr<T, D> {
[INFO] [stdout]     |                   ^^^^^     ^^^^^^^^^^^ the same lifetime is hidden here
[INFO] [stdout]     |                   |
[INFO] [stdout]     |                   the lifetime is elided here
[INFO] [stdout]     |
[INFO] [stdout]     = help: the same lifetime is referred to in inconsistent ways, making the signature confusing
[INFO] [stdout] help: use `'_` for type paths
[INFO] [stdout]     |
[INFO] [stdout] 305 |     pub fn borrow(&self) -> Vistr<'_, T, D> {
[INFO] [stdout]     |                                   +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stdout]    --> src/dfs_order.rs:397:38
[INFO] [stdout]     |
[INFO] [stdout] 397 | fn vistr_next<T, D: DfsOrder>(vistr: Vistr<T, D>) -> (&T, Option<[Vistr<T, D>; 2]>) {
[INFO] [stdout]     |                                      ^^^^^^^^^^^      ^^          ^^^^^^^^^^^ the same lifetime is hidden here
[INFO] [stdout]     |                                      |                |
[INFO] [stdout]     |                                      |                the same lifetime is elided here
[INFO] [stdout]     |                                      the lifetime is hidden here
[INFO] [stdout]     |
[INFO] [stdout]     = help: the same lifetime is referred to in inconsistent ways, making the signature confusing
[INFO] [stdout] help: use `'_` for type paths
[INFO] [stdout]     |
[INFO] [stdout] 397 | fn vistr_next<T, D: DfsOrder>(vistr: Vistr<'_, T, D>) -> (&T, Option<[Vistr<'_, T, D>; 2]>) {
[INFO] [stdout]     |                                            +++                              +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stdout]    --> src/dfs_order.rs:443:19
[INFO] [stdout]     |
[INFO] [stdout] 443 |     pub fn borrow(&self) -> Vistr<T, D> {
[INFO] [stdout]     |                   ^^^^^     ^^^^^^^^^^^ the same lifetime is hidden here
[INFO] [stdout]     |                   |
[INFO] [stdout]     |                   the lifetime is elided here
[INFO] [stdout]     |
[INFO] [stdout]     = help: the same lifetime is referred to in inconsistent ways, making the signature confusing
[INFO] [stdout] help: use `'_` for type paths
[INFO] [stdout]     |
[INFO] [stdout] 443 |     pub fn borrow(&self) -> Vistr<'_, T, D> {
[INFO] [stdout]     |                                   +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stdout]    --> src/dfs_order.rs:451:23
[INFO] [stdout]     |
[INFO] [stdout] 451 |     pub fn borrow_mut(&mut self) -> VistrMut<T, D> {
[INFO] [stdout]     |                       ^^^^^^^^^     ^^^^^^^^^^^^^^ the same lifetime is hidden here
[INFO] [stdout]     |                       |
[INFO] [stdout]     |                       the lifetime is elided here
[INFO] [stdout]     |
[INFO] [stdout]     = help: the same lifetime is referred to in inconsistent ways, making the signature confusing
[INFO] [stdout] help: use `'_` for type paths
[INFO] [stdout]     |
[INFO] [stdout] 451 |     pub fn borrow_mut(&mut self) -> VistrMut<'_, T, D> {
[INFO] [stdout]     |                                              +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stdout]    --> src/dfs_order.rs:471:42
[INFO] [stdout]     |
[INFO] [stdout] 471 | fn vistr_mut_next<T, D: DfsOrder>(vistr: VistrMut<T, D>) -> (&mut T, Option<[VistrMut<T, D>; 2]>) {
[INFO] [stdout]     |                                          ^^^^^^^^^^^^^^      ^^^^^^          ^^^^^^^^^^^^^^ the same lifetime is hidden here
[INFO] [stdout]     |                                          |                   |
[INFO] [stdout]     |                                          |                   the same lifetime is elided here
[INFO] [stdout]     |                                          the lifetime is hidden here
[INFO] [stdout]     |
[INFO] [stdout]     = help: the same lifetime is referred to in inconsistent ways, making the signature confusing
[INFO] [stdout] help: use `'_` for type paths
[INFO] [stdout]     |
[INFO] [stdout] 471 | fn vistr_mut_next<T, D: DfsOrder>(vistr: VistrMut<'_, T, D>) -> (&mut T, Option<[VistrMut<'_, T, D>; 2]>) {
[INFO] [stdout]     |                                                   +++                                     +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `release` profile [optimized] target(s) in 0.34s
[INFO] running `Command { std: "docker" "inspect" "14e972eca5e86aa12d35500335bc22849d2e48e8e0d8ce9b2a929749d9e68fe1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "exec" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=warn" "-e" "RUSTDOCFLAGS=--cap-lints=warn" "-w" "/opt/rustwide/workdir" "--user" "0:0" "14e972eca5e86aa12d35500335bc22849d2e48e8e0d8ce9b2a929749d9e68fe1" "/opt/rustwide/cargo-home/bin/cargo" "+1.100.0-beta.1" "test" "--frozen" "--no-run" "--message-format=json" "--release", kill_on_drop: false }`
[INFO] [stderr]    Compiling semver-parser v0.7.0
[INFO] [stderr]    Compiling libc v0.2.121
[INFO] [stderr]    Compiling unicode-width v0.1.9
[INFO] [stderr]    Compiling term v0.4.6
[INFO] [stderr]    Compiling rustc-serialize v0.3.24
[INFO] [stdout] warning: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stdout]    --> src/dfs_order.rs:107:20
[INFO] [stdout]     |
[INFO] [stdout] 107 |     pub fn as_tree(&self) -> CompleteTree<T, D> {
[INFO] [stdout]     |                    ^^^^^     ^^^^^^^^^^^^^^^^^^ the same lifetime is hidden here
[INFO] [stdout]     |                    |
[INFO] [stdout]     |                    the lifetime is elided here
[INFO] [stdout]     |
[INFO] [stdout]     = help: the same lifetime is referred to in inconsistent ways, making the signature confusing
[INFO] [stdout]     = note: `#[warn(mismatched_lifetime_syntaxes)]` on by default
[INFO] [stdout] help: use `'_` for type paths
[INFO] [stdout]     |
[INFO] [stdout] 107 |     pub fn as_tree(&self) -> CompleteTree<'_, T, D> {
[INFO] [stdout]     |                                           +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stdout]    --> src/dfs_order.rs:114:24
[INFO] [stdout]     |
[INFO] [stdout] 114 |     pub fn as_tree_mut(&mut self) -> CompleteTreeMut<T, D> {
[INFO] [stdout]     |                        ^^^^^^^^^     ^^^^^^^^^^^^^^^^^^^^^ the same lifetime is hidden here
[INFO] [stdout]     |                        |
[INFO] [stdout]     |                        the lifetime is elided here
[INFO] [stdout]     |
[INFO] [stdout]     = help: the same lifetime is referred to in inconsistent ways, making the signature confusing
[INFO] [stdout] help: use `'_` for type paths
[INFO] [stdout]     |
[INFO] [stdout] 114 |     pub fn as_tree_mut(&mut self) -> CompleteTreeMut<'_, T, D> {
[INFO] [stdout]     |                                                      +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stdout]    --> src/dfs_order.rs:208:20
[INFO] [stdout]     |
[INFO] [stdout] 208 |     pub fn as_tree(&self) -> CompleteTree<T, D> {
[INFO] [stdout]     |                    ^^^^^     ^^^^^^^^^^^^^^^^^^ the same lifetime is hidden here
[INFO] [stdout]     |                    |
[INFO] [stdout]     |                    the lifetime is elided here
[INFO] [stdout]     |
[INFO] [stdout]     = help: the same lifetime is referred to in inconsistent ways, making the signature confusing
[INFO] [stdout] help: use `'_` for type paths
[INFO] [stdout]     |
[INFO] [stdout] 208 |     pub fn as_tree(&self) -> CompleteTree<'_, T, D> {
[INFO] [stdout]     |                                           +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stdout]    --> src/dfs_order.rs:215:23
[INFO] [stdout]     |
[INFO] [stdout] 215 |     pub fn borrow_mut(&mut self)->CompleteTreeMut<T,D>{
[INFO] [stdout]     |                       ^^^^^^^^^   ^^^^^^^^^^^^^^^^^^^^ the same lifetime is hidden here
[INFO] [stdout]     |                       |
[INFO] [stdout]     |                       the lifetime is elided here
[INFO] [stdout]     |
[INFO] [stdout]     = help: the same lifetime is referred to in inconsistent ways, making the signature confusing
[INFO] [stdout] help: use `'_` for type paths
[INFO] [stdout]     |
[INFO] [stdout] 215 |     pub fn borrow_mut(&mut self)->CompleteTreeMut<'_, T,D>{
[INFO] [stdout]     |                                                   +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stdout]    --> src/dfs_order.rs:260:19
[INFO] [stdout]     |
[INFO] [stdout] 260 |     pub fn borrow(&self)->CompleteTree<T,D>{
[INFO] [stdout]     |                   ^^^^^   ^^^^^^^^^^^^^^^^^ the same lifetime is hidden here
[INFO] [stdout]     |                   |
[INFO] [stdout]     |                   the lifetime is elided here
[INFO] [stdout]     |
[INFO] [stdout]     = help: the same lifetime is referred to in inconsistent ways, making the signature confusing
[INFO] [stdout] help: use `'_` for type paths
[INFO] [stdout]     |
[INFO] [stdout] 260 |     pub fn borrow(&self)->CompleteTree<'_, T,D>{
[INFO] [stdout]     |                                        +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stdout]    --> src/dfs_order.rs:305:19
[INFO] [stdout]     |
[INFO] [stdout] 305 |     pub fn borrow(&self) -> Vistr<T, D> {
[INFO] [stdout]     |                   ^^^^^     ^^^^^^^^^^^ the same lifetime is hidden here
[INFO] [stdout]     |                   |
[INFO] [stdout]     |                   the lifetime is elided here
[INFO] [stdout]     |
[INFO] [stdout]     = help: the same lifetime is referred to in inconsistent ways, making the signature confusing
[INFO] [stdout] help: use `'_` for type paths
[INFO] [stdout]     |
[INFO] [stdout] 305 |     pub fn borrow(&self) -> Vistr<'_, T, D> {
[INFO] [stdout]     |                                   +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stdout]    --> src/dfs_order.rs:397:38
[INFO] [stdout]     |
[INFO] [stdout] 397 | fn vistr_next<T, D: DfsOrder>(vistr: Vistr<T, D>) -> (&T, Option<[Vistr<T, D>; 2]>) {
[INFO] [stdout]     |                                      ^^^^^^^^^^^      ^^          ^^^^^^^^^^^ the same lifetime is hidden here
[INFO] [stdout]     |                                      |                |
[INFO] [stdout]     |                                      |                the same lifetime is elided here
[INFO] [stdout]     |                                      the lifetime is hidden here
[INFO] [stdout]     |
[INFO] [stdout]     = help: the same lifetime is referred to in inconsistent ways, making the signature confusing
[INFO] [stdout] help: use `'_` for type paths
[INFO] [stdout]     |
[INFO] [stdout] 397 | fn vistr_next<T, D: DfsOrder>(vistr: Vistr<'_, T, D>) -> (&T, Option<[Vistr<'_, T, D>; 2]>) {
[INFO] [stdout]     |                                            +++                              +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stdout]    --> src/dfs_order.rs:443:19
[INFO] [stdout]     |
[INFO] [stdout] 443 |     pub fn borrow(&self) -> Vistr<T, D> {
[INFO] [stdout]     |                   ^^^^^     ^^^^^^^^^^^ the same lifetime is hidden here
[INFO] [stdout]     |                   |
[INFO] [stdout]     |                   the lifetime is elided here
[INFO] [stdout]     |
[INFO] [stdout]     = help: the same lifetime is referred to in inconsistent ways, making the signature confusing
[INFO] [stdout] help: use `'_` for type paths
[INFO] [stdout]     |
[INFO] [stdout] 443 |     pub fn borrow(&self) -> Vistr<'_, T, D> {
[INFO] [stdout]     |                                   +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stdout]    --> src/dfs_order.rs:451:23
[INFO] [stdout]     |
[INFO] [stdout] 451 |     pub fn borrow_mut(&mut self) -> VistrMut<T, D> {
[INFO] [stdout]     |                       ^^^^^^^^^     ^^^^^^^^^^^^^^ the same lifetime is hidden here
[INFO] [stdout]     |                       |
[INFO] [stdout]     |                       the lifetime is elided here
[INFO] [stdout]     |
[INFO] [stdout]     = help: the same lifetime is referred to in inconsistent ways, making the signature confusing
[INFO] [stdout] help: use `'_` for type paths
[INFO] [stdout]     |
[INFO] [stdout] 451 |     pub fn borrow_mut(&mut self) -> VistrMut<'_, T, D> {
[INFO] [stdout]     |                                              +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stdout]    --> src/dfs_order.rs:471:42
[INFO] [stdout]     |
[INFO] [stdout] 471 | fn vistr_mut_next<T, D: DfsOrder>(vistr: VistrMut<T, D>) -> (&mut T, Option<[VistrMut<T, D>; 2]>) {
[INFO] [stdout]     |                                          ^^^^^^^^^^^^^^      ^^^^^^          ^^^^^^^^^^^^^^ the same lifetime is hidden here
[INFO] [stdout]     |                                          |                   |
[INFO] [stdout]     |                                          |                   the same lifetime is elided here
[INFO] [stdout]     |                                          the lifetime is hidden here
[INFO] [stdout]     |
[INFO] [stdout]     = help: the same lifetime is referred to in inconsistent ways, making the signature confusing
[INFO] [stdout] help: use `'_` for type paths
[INFO] [stdout]     |
[INFO] [stdout] 471 | fn vistr_mut_next<T, D: DfsOrder>(vistr: VistrMut<'_, T, D>) -> (&mut T, Option<[VistrMut<'_, T, D>; 2]>) {
[INFO] [stdout]     |                                                   +++                                     +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]    Compiling getopts v0.2.21
[INFO] [stdout] error[E0310]: the parameter type `T` may not live long enough
[INFO] [stdout]     --> /opt/rustwide/cargo-home/registry/src/index.crates.io-1949cf8c6b5b557f/rustc-serialize-0.3.24/src/serialize.rs:1155:5
[INFO] [stdout]      |
[INFO] [stdout] 1155 |     fn decode<D: Decoder>(d: &mut D) -> Result<Cow<'static, T>, D::Error> {
[INFO] [stdout]      |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]      |     |
[INFO] [stdout]      |     the parameter type `T` must be valid for the static lifetime...
[INFO] [stdout]      |     ...so that the type `T` will meet its required lifetime bounds...
[INFO] [stdout]      |
[INFO] [stdout] note: ...that is required by this bound
[INFO] [stdout]     --> /rustc/e3feeb59cd1bdd011a2bfcc0747b55125d9b8527/library/alloc/src/borrow.rs:169:29
[INFO] [stdout] help: consider adding an explicit lifetime bound
[INFO] [stdout]      |
[INFO] [stdout] 1151 | impl<'a, T: ?Sized + 'static> Decodable for Cow<'a, T>
[INFO] [stdout]      |                    +++++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]    Compiling semver v0.9.0
[INFO] [stderr]    Compiling rustc_version v0.2.3
[INFO] [stderr]    Compiling rustc-test v0.3.1
[INFO] [stderr]    Compiling time v0.1.44
[INFO] [stdout] For more information about this error, try `rustc --explain E0310`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `rustc-serialize` (lib) due to 1 previous error
[INFO] running `Command { std: "docker" "inspect" "14e972eca5e86aa12d35500335bc22849d2e48e8e0d8ce9b2a929749d9e68fe1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "14e972eca5e86aa12d35500335bc22849d2e48e8e0d8ce9b2a929749d9e68fe1", kill_on_drop: false }`
[INFO] [stdout] 14e972eca5e86aa12d35500335bc22849d2e48e8e0d8ce9b2a929749d9e68fe1
