[INFO] fetching crate shortcut 4.1.3...
[INFO] checking shortcut-4.1.3 against master#af3c6e733a40e671550e0f0f5aeecaa13772ba56 for pr-74989
[INFO] extracting crate shortcut 4.1.3 into /workspace/builds/worker-3/source
[INFO] validating manifest of crates.io crate shortcut 4.1.3 on toolchain af3c6e733a40e671550e0f0f5aeecaa13772ba56
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+af3c6e733a40e671550e0f0f5aeecaa13772ba56" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking crates.io crate shortcut 4.1.3
[INFO] finished tweaking crates.io crate shortcut 4.1.3
[INFO] tweaked toml for crates.io crate shortcut 4.1.3 written to /workspace/builds/worker-3/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+af3c6e733a40e671550e0f0f5aeecaa13772ba56" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+af3c6e733a40e671550e0f0f5aeecaa13772ba56" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/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:d92eaeed33fa75130ca1ee6c8a01d1ffb62bac859dfdfb3450e3e5d1c0146529" "/opt/rustwide/cargo-home/bin/cargo" "+af3c6e733a40e671550e0f0f5aeecaa13772ba56" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] a3c5be985324693482467734b4cb7cba8ad0d473296d7d27eb755d66e7561234
[INFO] running `Command { std: "docker" "start" "-a" "a3c5be985324693482467734b4cb7cba8ad0d473296d7d27eb755d66e7561234", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "a3c5be985324693482467734b4cb7cba8ad0d473296d7d27eb755d66e7561234", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "a3c5be985324693482467734b4cb7cba8ad0d473296d7d27eb755d66e7561234", kill_on_drop: false }`
[INFO] [stdout] a3c5be985324693482467734b4cb7cba8ad0d473296d7d27eb755d66e7561234
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/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:d92eaeed33fa75130ca1ee6c8a01d1ffb62bac859dfdfb3450e3e5d1c0146529" "/opt/rustwide/cargo-home/bin/cargo" "+af3c6e733a40e671550e0f0f5aeecaa13772ba56" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 43a20224e06e95f2752d808642a54ae3761269e7cd102794e8b472b6047bc25f
[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" "43a20224e06e95f2752d808642a54ae3761269e7cd102794e8b472b6047bc25f", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.77
[INFO] [stderr]    Compiling winapi-build v0.1.1
[INFO] [stderr]     Checking winapi v0.2.8
[INFO] [stderr]     Checking regex-syntax v0.3.9
[INFO] [stderr]     Checking utf8-ranges v0.1.3
[INFO] [stderr]     Checking strsim v0.5.2
[INFO] [stderr]     Checking lazy_static v0.2.11
[INFO] [stderr]     Checking rustc-serialize v0.3.24
[INFO] [stderr]     Checking shortcut v4.1.3 (/opt/rustwide/workdir)
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/idx.rs:10:40
[INFO] [stdout]    |
[INFO] [stdout] 10 |     fn lookup<'a>(&'a self, &T) -> Box<Iterator<Item = usize> + 'a>;
[INFO] [stdout]    |                                        ^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn Iterator<Item = usize> + 'a`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(bare_trait_objects)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/idx.rs:41:45
[INFO] [stdout]    |
[INFO] [stdout] 41 |     fn lookup<'a>(&'a self, key: &T) -> Box<Iterator<Item = usize> + 'a> {
[INFO] [stdout]    |                                             ^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn Iterator<Item = usize> + 'a`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/idx.rs:86:59
[INFO] [stdout]    |
[INFO] [stdout] 86 |     fn between<'a>(&'a self, Bound<&T>, Bound<&T>) -> Box<Iterator<Item = usize> + 'a>;
[INFO] [stdout]    |                                                           ^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn Iterator<Item = usize> + 'a`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/idx.rs:107:45
[INFO] [stdout]     |
[INFO] [stdout] 107 |     fn lookup<'a>(&'a self, key: &T) -> Box<Iterator<Item = usize> + 'a> {
[INFO] [stdout]     |                                             ^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn Iterator<Item = usize> + 'a`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/idx.rs:132:69
[INFO] [stdout]     |
[INFO] [stdout] 132 |     fn between<'a>(&'a self, min: Bound<&T>, max: Bound<&T>) -> Box<Iterator<Item = usize> + 'a> {
[INFO] [stdout]     |                                                                     ^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn Iterator<Item = usize> + 'a`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/idx.rs:142:15
[INFO] [stdout]     |
[INFO] [stdout] 142 |     Range(Box<RangeIndex<T> + Send + Sync>),
[INFO] [stdout]     |               ^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn RangeIndex<T> + Send + Sync`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/idx.rs:144:18
[INFO] [stdout]     |
[INFO] [stdout] 144 |     Equality(Box<EqualityIndex<T> + Send + Sync>),
[INFO] [stdout]     |                  ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn EqualityIndex<T> + Send + Sync`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/idx.rs:148:45
[INFO] [stdout]     |
[INFO] [stdout] 148 |     fn lookup<'a>(&'a self, key: &T) -> Box<Iterator<Item = usize> + 'a> {
[INFO] [stdout]     |                                             ^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn Iterator<Item = usize> + 'a`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/lib.rs:100:39
[INFO] [stdout]     |
[INFO] [stdout] 100 | ...                   -> Box<Iterator<Item = usize> + 's> {
[INFO] [stdout]     |                              ^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn Iterator<Item = usize> + 's`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `EqualityIndex` is imported redundantly
[INFO] [stdout]    --> src/lib.rs:102:13
[INFO] [stdout]     |
[INFO] [stdout] 42  | pub use idx::EqualityIndex;
[INFO] [stdout]     |         ------------------ the item `EqualityIndex` is already imported here
[INFO] [stdout] ...
[INFO] [stdout] 102 |         use EqualityIndex;
[INFO] [stdout]     |             ^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/lib.rs:132:36
[INFO] [stdout]     |
[INFO] [stdout] 132 | ...                   -> Box<Iterator<Item = &'s R> + 'c> {
[INFO] [stdout]     |                              ^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn Iterator<Item = &'s R> + 'c`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `EqualityIndex` is imported redundantly
[INFO] [stdout]    --> src/lib.rs:182:17
[INFO] [stdout]     |
[INFO] [stdout] 42  | pub use idx::EqualityIndex;
[INFO] [stdout]     |         ------------------ the item `EqualityIndex` is already imported here
[INFO] [stdout] ...
[INFO] [stdout] 182 |             use EqualityIndex;
[INFO] [stdout]     |                 ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `EqualityIndex` is imported redundantly
[INFO] [stdout]    --> src/lib.rs:196:13
[INFO] [stdout]     |
[INFO] [stdout] 42  | pub use idx::EqualityIndex;
[INFO] [stdout]     |         ------------------ the item `EqualityIndex` is already imported here
[INFO] [stdout] ...
[INFO] [stdout] 196 |         use EqualityIndex;
[INFO] [stdout]     |             ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]    Compiling kernel32-sys v0.2.2
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/idx.rs:55:21
[INFO] [stdout]    |
[INFO] [stdout] 55 |         if let Some(mut l) = self.map.get_mut(key) {
[INFO] [stdout]    |                     ----^
[INFO] [stdout]    |                     |
[INFO] [stdout]    |                     help: remove this `mut`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_mut)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 14 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Checking memchr v0.1.11
[INFO] [stderr]     Checking thread-id v2.0.0
[INFO] [stderr]     Checking time v0.1.44
[INFO] [stderr]     Checking thread_local v0.2.7
[INFO] [stderr]     Checking aho-corasick v0.5.3
[INFO] [stderr]     Checking regex v0.1.80
[INFO] [stderr]     Checking docopt v0.6.86
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/idx.rs:10:40
[INFO] [stdout]    |
[INFO] [stdout] 10 |     fn lookup<'a>(&'a self, &T) -> Box<Iterator<Item = usize> + 'a>;
[INFO] [stdout]    |                                        ^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn Iterator<Item = usize> + 'a`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(bare_trait_objects)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/idx.rs:41:45
[INFO] [stdout]    |
[INFO] [stdout] 41 |     fn lookup<'a>(&'a self, key: &T) -> Box<Iterator<Item = usize> + 'a> {
[INFO] [stdout]    |                                             ^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn Iterator<Item = usize> + 'a`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/idx.rs:86:59
[INFO] [stdout]    |
[INFO] [stdout] 86 |     fn between<'a>(&'a self, Bound<&T>, Bound<&T>) -> Box<Iterator<Item = usize> + 'a>;
[INFO] [stdout]    |                                                           ^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn Iterator<Item = usize> + 'a`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/idx.rs:107:45
[INFO] [stdout]     |
[INFO] [stdout] 107 |     fn lookup<'a>(&'a self, key: &T) -> Box<Iterator<Item = usize> + 'a> {
[INFO] [stdout]     |                                             ^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn Iterator<Item = usize> + 'a`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/idx.rs:132:69
[INFO] [stdout]     |
[INFO] [stdout] 132 |     fn between<'a>(&'a self, min: Bound<&T>, max: Bound<&T>) -> Box<Iterator<Item = usize> + 'a> {
[INFO] [stdout]     |                                                                     ^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn Iterator<Item = usize> + 'a`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/idx.rs:142:15
[INFO] [stdout]     |
[INFO] [stdout] 142 |     Range(Box<RangeIndex<T> + Send + Sync>),
[INFO] [stdout]     |               ^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn RangeIndex<T> + Send + Sync`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/idx.rs:144:18
[INFO] [stdout]     |
[INFO] [stdout] 144 |     Equality(Box<EqualityIndex<T> + Send + Sync>),
[INFO] [stdout]     |                  ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn EqualityIndex<T> + Send + Sync`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/idx.rs:148:45
[INFO] [stdout]     |
[INFO] [stdout] 148 |     fn lookup<'a>(&'a self, key: &T) -> Box<Iterator<Item = usize> + 'a> {
[INFO] [stdout]     |                                             ^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn Iterator<Item = usize> + 'a`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/lib.rs:100:39
[INFO] [stdout]     |
[INFO] [stdout] 100 | ...                   -> Box<Iterator<Item = usize> + 's> {
[INFO] [stdout]     |                              ^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn Iterator<Item = usize> + 's`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `EqualityIndex` is imported redundantly
[INFO] [stdout]    --> src/lib.rs:102:13
[INFO] [stdout]     |
[INFO] [stdout] 42  | pub use idx::EqualityIndex;
[INFO] [stdout]     |         ------------------ the item `EqualityIndex` is already imported here
[INFO] [stdout] ...
[INFO] [stdout] 102 |         use EqualityIndex;
[INFO] [stdout]     |             ^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/lib.rs:132:36
[INFO] [stdout]     |
[INFO] [stdout] 132 | ...                   -> Box<Iterator<Item = &'s R> + 'c> {
[INFO] [stdout]     |                              ^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn Iterator<Item = &'s R> + 'c`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `EqualityIndex` is imported redundantly
[INFO] [stdout]    --> src/lib.rs:182:17
[INFO] [stdout]     |
[INFO] [stdout] 42  | pub use idx::EqualityIndex;
[INFO] [stdout]     |         ------------------ the item `EqualityIndex` is already imported here
[INFO] [stdout] ...
[INFO] [stdout] 182 |             use EqualityIndex;
[INFO] [stdout]     |                 ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `EqualityIndex` is imported redundantly
[INFO] [stdout]    --> src/lib.rs:196:13
[INFO] [stdout]     |
[INFO] [stdout] 42  | pub use idx::EqualityIndex;
[INFO] [stdout]     |         ------------------ the item `EqualityIndex` is already imported here
[INFO] [stdout] ...
[INFO] [stdout] 196 |         use EqualityIndex;
[INFO] [stdout]     |             ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0308]: mismatched types
[INFO] [stdout]   --> benches/bench.rs:62:59
[INFO] [stdout]    |
[INFO] [stdout] 62 |             cmp: cmp::Comparison::Equal(cmp::Value::Const(format!("{}", i))),
[INFO] [stdout]    |                                                           ^^^^^^^^^^^^^^^^ expected enum `Cow`, found struct `String`
[INFO] [stdout]    |
[INFO] [stdout]    = note: expected enum `Cow<'_, _>`
[INFO] [stdout]             found struct `String`
[INFO] [stdout]    = note: this error originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to previous error
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0308`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `shortcut`.
[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] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/idx.rs:55:21
[INFO] [stdout]    |
[INFO] [stdout] 55 |         if let Some(mut l) = self.map.get_mut(key) {
[INFO] [stdout]    |                     ----^
[INFO] [stdout]    |                     |
[INFO] [stdout]    |                     help: remove this `mut`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_mut)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 14 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: build failed
[INFO] running `Command { std: "docker" "inspect" "43a20224e06e95f2752d808642a54ae3761269e7cd102794e8b472b6047bc25f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "43a20224e06e95f2752d808642a54ae3761269e7cd102794e8b472b6047bc25f", kill_on_drop: false }`
[INFO] [stdout] 43a20224e06e95f2752d808642a54ae3761269e7cd102794e8b472b6047bc25f
