[INFO] fetching crate underscore 0.0.2...
[INFO] building underscore-0.0.2 against master#881c1ac408d93bb7adaa3a51dabab9266e82eee8 for issue-85264
[INFO] extracting crate underscore 0.0.2 into /workspace/builds/worker-12/source
[INFO] validating manifest of crates.io crate underscore 0.0.2 on toolchain 881c1ac408d93bb7adaa3a51dabab9266e82eee8
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+881c1ac408d93bb7adaa3a51dabab9266e82eee8" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate underscore 0.0.2
[INFO] finished tweaking crates.io crate underscore 0.0.2
[INFO] tweaked toml for crates.io crate underscore 0.0.2 written to /workspace/builds/worker-12/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+881c1ac408d93bb7adaa3a51dabab9266e82eee8" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+881c1ac408d93bb7adaa3a51dabab9266e82eee8" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/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@sha256:20528e8c29e4536546f0102ce88568b16ea7538393a33fcca951030f7af10457" "/opt/rustwide/cargo-home/bin/cargo" "+881c1ac408d93bb7adaa3a51dabab9266e82eee8" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 981eca03edbeb4b963a1f709a96cab0e4b8b02a60066b89996486b9e749ae3b0
[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" "981eca03edbeb4b963a1f709a96cab0e4b8b02a60066b89996486b9e749ae3b0", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "981eca03edbeb4b963a1f709a96cab0e4b8b02a60066b89996486b9e749ae3b0", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "981eca03edbeb4b963a1f709a96cab0e4b8b02a60066b89996486b9e749ae3b0", kill_on_drop: false }`
[INFO] [stdout] 981eca03edbeb4b963a1f709a96cab0e4b8b02a60066b89996486b9e749ae3b0
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/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" "ghcr.io/rust-lang/crates-build-env/linux@sha256:20528e8c29e4536546f0102ce88568b16ea7538393a33fcca951030f7af10457" "/opt/rustwide/cargo-home/bin/cargo" "+881c1ac408d93bb7adaa3a51dabab9266e82eee8" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] e1721a9e9cf885064a2d0bfa0ee0a755fb68a4b979d16f9ab61f2464228f75ab
[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" "e1721a9e9cf885064a2d0bfa0ee0a755fb68a4b979d16f9ab61f2464228f75ab", kill_on_drop: false }`
[INFO] [stderr]    Compiling underscore v0.0.2 (/opt/rustwide/workdir)
[INFO] [stdout] error: expected type, found `|`
[INFO] [stdout]   --> src/vec/mod.rs:90:24
[INFO] [stdout]    |
[INFO] [stdout] 90 |     fn reject(self, f: |value: &T| -> bool) -> Vec<T>;
[INFO] [stdout]    |                        ^ expected type
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: invalid suffix `u` for number literal
[INFO] [stdout]   --> src/vec/expand.rs:38:25
[INFO] [stdout]    |
[INFO] [stdout] 38 |         let mut index = 0u;
[INFO] [stdout]    |                         ^^ invalid suffix `u`
[INFO] [stdout]    |
[INFO] [stdout]    = help: the suffix must be one of the numeric types (`u32`, `isize`, `f32`, etc.)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: invalid suffix `u` for number literal
[INFO] [stdout]   --> src/vec/expand.rs:60:24
[INFO] [stdout]    |
[INFO] [stdout] 60 |         for i in range(0u, self.len() - 1) {
[INFO] [stdout]    |                        ^^ invalid suffix `u`
[INFO] [stdout]    |
[INFO] [stdout]    = help: the suffix must be one of the numeric types (`u32`, `isize`, `f32`, etc.)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: expected type, found `|`
[INFO] [stdout]   --> src/vec/expand.rs:66:24
[INFO] [stdout]    |
[INFO] [stdout] 66 |     fn reject(self, f: |value: &T| -> bool) -> Vec<T> {
[INFO] [stdout]    |                        ^ expected type
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: expected type, found `|`
[INFO] [stdout]   --> src/hashmap/mod.rs:60:32
[INFO] [stdout]    |
[INFO] [stdout] 60 |     fn pick_by_filter(self, f: |k: &K, v: &V| -> bool) -> HashMap<K, V>;
[INFO] [stdout]    |                                ^ expected type
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: expected argument name, found `|`
[INFO] [stdout]   --> src/hashmap/mod.rs:60:45
[INFO] [stdout]    |
[INFO] [stdout] 60 |     fn pick_by_filter(self, f: |k: &K, v: &V| -> bool) -> HashMap<K, V>;
[INFO] [stdout]    |                                             ^ expected argument name
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: expected one of `!`, `(`, `)`, `,`, `::`, or `<`, found `|`
[INFO] [stdout]   --> src/hashmap/mod.rs:60:45
[INFO] [stdout]    |
[INFO] [stdout] 60 |     fn pick_by_filter(self, f: |k: &K, v: &V| -> bool) -> HashMap<K, V>;
[INFO] [stdout]    |                                             ^
[INFO] [stdout]    |                                             |
[INFO] [stdout]    |                                             expected one of `!`, `(`, `)`, `,`, `::`, or `<`
[INFO] [stdout]    |                                             help: missing `,`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: expected type, found `|`
[INFO] [stdout]   --> src/hashmap/mod.rs:99:32
[INFO] [stdout]    |
[INFO] [stdout] 99 |     fn omit_by_filter(self, f: |k: &K, v: &V| -> bool) -> HashMap<K, V>;
[INFO] [stdout]    |                                ^ expected type
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: expected argument name, found `|`
[INFO] [stdout]   --> src/hashmap/mod.rs:99:45
[INFO] [stdout]    |
[INFO] [stdout] 99 |     fn omit_by_filter(self, f: |k: &K, v: &V| -> bool) -> HashMap<K, V>;
[INFO] [stdout]    |                                             ^ expected argument name
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: expected one of `!`, `(`, `)`, `,`, `::`, or `<`, found `|`
[INFO] [stdout]   --> src/hashmap/mod.rs:99:45
[INFO] [stdout]    |
[INFO] [stdout] 99 |     fn omit_by_filter(self, f: |k: &K, v: &V| -> bool) -> HashMap<K, V>;
[INFO] [stdout]    |                                             ^
[INFO] [stdout]    |                                             |
[INFO] [stdout]    |                                             expected one of `!`, `(`, `)`, `,`, `::`, or `<`
[INFO] [stdout]    |                                             help: missing `,`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: expected type, found `|`
[INFO] [stdout]   --> src/hashmap/expands.rs:26:32
[INFO] [stdout]    |
[INFO] [stdout] 26 |     fn pick_by_filter(self, f: |k: &K, v: &V| -> bool) -> HashMap<K, V> {
[INFO] [stdout]    |                                ^ expected type
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: expected parameter name, found `->`
[INFO] [stdout]   --> src/hashmap/expands.rs:26:47
[INFO] [stdout]    |
[INFO] [stdout] 26 |     fn pick_by_filter(self, f: |k: &K, v: &V| -> bool) -> HashMap<K, V> {
[INFO] [stdout]    |                                               ^^ expected parameter name
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: expected one of `!`, `(`, `)`, `,`, `::`, or `<`, found `|`
[INFO] [stdout]   --> src/hashmap/expands.rs:26:45
[INFO] [stdout]    |
[INFO] [stdout] 26 |     fn pick_by_filter(self, f: |k: &K, v: &V| -> bool) -> HashMap<K, V> {
[INFO] [stdout]    |                                             ^
[INFO] [stdout]    |                                             |
[INFO] [stdout]    |                                             expected one of `!`, `(`, `)`, `,`, `::`, or `<`
[INFO] [stdout]    |                                             help: missing `,`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: expected type, found `|`
[INFO] [stdout]   --> src/hashmap/expands.rs:45:32
[INFO] [stdout]    |
[INFO] [stdout] 45 |     fn omit_by_filter(self, f: |k: &K, v: &V| -> bool) -> HashMap<K, V> {
[INFO] [stdout]    |                                ^ expected type
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: expected parameter name, found `->`
[INFO] [stdout]   --> src/hashmap/expands.rs:45:47
[INFO] [stdout]    |
[INFO] [stdout] 45 |     fn omit_by_filter(self, f: |k: &K, v: &V| -> bool) -> HashMap<K, V> {
[INFO] [stdout]    |                                               ^^ expected parameter name
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: expected one of `!`, `(`, `)`, `,`, `::`, or `<`, found `|`
[INFO] [stdout]   --> src/hashmap/expands.rs:45:45
[INFO] [stdout]    |
[INFO] [stdout] 45 |     fn omit_by_filter(self, f: |k: &K, v: &V| -> bool) -> HashMap<K, V> {
[INFO] [stdout]    |                                             ^
[INFO] [stdout]    |                                             |
[INFO] [stdout]    |                                             expected one of `!`, `(`, `)`, `,`, `::`, or `<`
[INFO] [stdout]    |                                             help: missing `,`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: expected type, found `|`
[INFO] [stdout]   --> src/btreemap/mod.rs:60:32
[INFO] [stdout]    |
[INFO] [stdout] 60 |     fn pick_by_filter(self, f: |k: &K, v: &V| -> bool) -> BTreeMap<K, V>;
[INFO] [stdout]    |                                ^ expected type
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: expected argument name, found `|`
[INFO] [stdout]   --> src/btreemap/mod.rs:60:45
[INFO] [stdout]    |
[INFO] [stdout] 60 |     fn pick_by_filter(self, f: |k: &K, v: &V| -> bool) -> BTreeMap<K, V>;
[INFO] [stdout]    |                                             ^ expected argument name
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: expected one of `!`, `(`, `)`, `,`, `::`, or `<`, found `|`
[INFO] [stdout]   --> src/btreemap/mod.rs:60:45
[INFO] [stdout]    |
[INFO] [stdout] 60 |     fn pick_by_filter(self, f: |k: &K, v: &V| -> bool) -> BTreeMap<K, V>;
[INFO] [stdout]    |                                             ^
[INFO] [stdout]    |                                             |
[INFO] [stdout]    |                                             expected one of `!`, `(`, `)`, `,`, `::`, or `<`
[INFO] [stdout]    |                                             help: missing `,`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: expected type, found `|`
[INFO] [stdout]   --> src/btreemap/mod.rs:99:32
[INFO] [stdout]    |
[INFO] [stdout] 99 |     fn omit_by_filter(self, f: |k: &K, v: &V| -> bool) -> BTreeMap<K, V>;
[INFO] [stdout]    |                                ^ expected type
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: expected argument name, found `|`
[INFO] [stdout]   --> src/btreemap/mod.rs:99:45
[INFO] [stdout]    |
[INFO] [stdout] 99 |     fn omit_by_filter(self, f: |k: &K, v: &V| -> bool) -> BTreeMap<K, V>;
[INFO] [stdout]    |                                             ^ expected argument name
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: expected one of `!`, `(`, `)`, `,`, `::`, or `<`, found `|`
[INFO] [stdout]   --> src/btreemap/mod.rs:99:45
[INFO] [stdout]    |
[INFO] [stdout] 99 |     fn omit_by_filter(self, f: |k: &K, v: &V| -> bool) -> BTreeMap<K, V>;
[INFO] [stdout]    |                                             ^
[INFO] [stdout]    |                                             |
[INFO] [stdout]    |                                             expected one of `!`, `(`, `)`, `,`, `::`, or `<`
[INFO] [stdout]    |                                             help: missing `,`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: expected type, found `|`
[INFO] [stdout]   --> src/btreemap/expands.rs:26:32
[INFO] [stdout]    |
[INFO] [stdout] 26 |     fn pick_by_filter(self, f: |k: &K, v: &V| -> bool) -> BTreeMap<K, V> {
[INFO] [stdout]    |                                ^ expected type
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: expected parameter name, found `->`
[INFO] [stdout]   --> src/btreemap/expands.rs:26:47
[INFO] [stdout]    |
[INFO] [stdout] 26 |     fn pick_by_filter(self, f: |k: &K, v: &V| -> bool) -> BTreeMap<K, V> {
[INFO] [stdout]    |                                               ^^ expected parameter name
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: expected one of `!`, `(`, `)`, `,`, `::`, or `<`, found `|`
[INFO] [stdout]   --> src/btreemap/expands.rs:26:45
[INFO] [stdout]    |
[INFO] [stdout] 26 |     fn pick_by_filter(self, f: |k: &K, v: &V| -> bool) -> BTreeMap<K, V> {
[INFO] [stdout]    |                                             ^
[INFO] [stdout]    |                                             |
[INFO] [stdout]    |                                             expected one of `!`, `(`, `)`, `,`, `::`, or `<`
[INFO] [stdout]    |                                             help: missing `,`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: expected type, found `|`
[INFO] [stdout]   --> src/btreemap/expands.rs:42:32
[INFO] [stdout]    |
[INFO] [stdout] 42 |     fn omit_by_filter(self, f: |k: &K, v: &V| -> bool) -> BTreeMap<K, V> {
[INFO] [stdout]    |                                ^ expected type
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: expected parameter name, found `->`
[INFO] [stdout]   --> src/btreemap/expands.rs:42:47
[INFO] [stdout]    |
[INFO] [stdout] 42 |     fn omit_by_filter(self, f: |k: &K, v: &V| -> bool) -> BTreeMap<K, V> {
[INFO] [stdout]    |                                               ^^ expected parameter name
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: expected one of `!`, `(`, `)`, `,`, `::`, or `<`, found `|`
[INFO] [stdout]   --> src/btreemap/expands.rs:42:45
[INFO] [stdout]    |
[INFO] [stdout] 42 |     fn omit_by_filter(self, f: |k: &K, v: &V| -> bool) -> BTreeMap<K, V> {
[INFO] [stdout]    |                                             ^
[INFO] [stdout]    |                                             |
[INFO] [stdout]    |                                             expected one of `!`, `(`, `)`, `,`, `::`, or `<`
[INFO] [stdout]    |                                             help: missing `,`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0412]: cannot find type `uint` in this scope
[INFO] [stdout]   --> src/vec/expand.rs:37:45
[INFO] [stdout]    |
[INFO] [stdout] 4  | impl<T: PartialEq + Clone + Ord> VecU<T> for Vec<T>{
[INFO] [stdout]    |                                - help: you might be missing a type parameter: `, uint`
[INFO] [stdout] ...
[INFO] [stdout] 37 |     fn index_of(&self, value: &T) -> Option<uint> {
[INFO] [stdout]    |                                             ^^^^ not found in this scope
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0412]: cannot find type `uint` in this scope
[INFO] [stdout]   --> src/vec/expand.rs:47:50
[INFO] [stdout]    |
[INFO] [stdout] 4  | impl<T: PartialEq + Clone + Ord> VecU<T> for Vec<T>{
[INFO] [stdout]    |                                - help: you might be missing a type parameter: `, uint`
[INFO] [stdout] ...
[INFO] [stdout] 47 |     fn last_index_of(&self, value: &T) -> Option<uint> {
[INFO] [stdout]    |                                                  ^^^^ not found in this scope
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0425]: cannot find function `range` in this scope
[INFO] [stdout]   --> src/vec/expand.rs:60:18
[INFO] [stdout]    |
[INFO] [stdout] 60 |         for i in range(0u, self.len() - 1) {
[INFO] [stdout]    |                  ^^^^^ not found in this scope
[INFO] [stdout]    |
[INFO] [stdout] help: consider importing this function
[INFO] [stdout]    |
[INFO] [stdout] 1  | use std::slice::range;
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0425]: cannot find function `f` in this scope
[INFO] [stdout]   --> src/vec/expand.rs:69:18
[INFO] [stdout]    |
[INFO] [stdout] 69 |             if ! f(&element) { rejected.push(element) }
[INFO] [stdout]    |                  ^ not found in this scope
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0412]: cannot find type `uint` in this scope
[INFO] [stdout]   --> src/vec/mod.rs:59:45
[INFO] [stdout]    |
[INFO] [stdout] 6  | pub trait VecU<T> {
[INFO] [stdout]    |                 - help: you might be missing a type parameter: `, uint`
[INFO] [stdout] ...
[INFO] [stdout] 59 |     fn index_of(&self, value: &T) -> Option<uint>;
[INFO] [stdout]    |                                             ^^^^ not found in this scope
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0412]: cannot find type `uint` in this scope
[INFO] [stdout]   --> src/vec/mod.rs:69:50
[INFO] [stdout]    |
[INFO] [stdout] 6  | pub trait VecU<T> {
[INFO] [stdout]    |                 - help: you might be missing a type parameter: `, uint`
[INFO] [stdout] ...
[INFO] [stdout] 69 |     fn last_index_of(&self, value: &T) -> Option<uint>;
[INFO] [stdout]    |                                                  ^^^^ not found in this scope
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0425]: cannot find function `f` in this scope
[INFO] [stdout]   --> src/hashmap/expands.rs:31:16
[INFO] [stdout]    |
[INFO] [stdout] 31 |             if f(&cp_key, &cp_val) { picked.insert(cp_key, cp_val); }
[INFO] [stdout]    |                ^ help: a local variable with a similar name exists: `v`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0425]: cannot find function `f` in this scope
[INFO] [stdout]   --> src/hashmap/expands.rs:50:18
[INFO] [stdout]    |
[INFO] [stdout] 50 |             if ! f(&cp_key, &cp_val) { omitted.insert(cp_key, cp_val); }
[INFO] [stdout]    |                  ^ help: a local variable with a similar name exists: `v`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0425]: cannot find function `f` in this scope
[INFO] [stdout]   --> src/btreemap/expands.rs:29:16
[INFO] [stdout]    |
[INFO] [stdout] 29 |             if f(&key, &value) { picked.insert(key, value); }
[INFO] [stdout]    |                ^ help: a local variable with a similar name exists: `v`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0425]: cannot find function `f` in this scope
[INFO] [stdout]   --> src/btreemap/expands.rs:45:18
[INFO] [stdout]    |
[INFO] [stdout] 45 |             if ! f(&key, &value) { omitted.insert(key, value); }
[INFO] [stdout]    |                  ^ help: a local variable with a similar name exists: `v`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: anonymous parameters are deprecated and will be removed in the next edition.
[INFO] [stdout]   --> src/vec/mod.rs:90:22
[INFO] [stdout]    |
[INFO] [stdout] 90 |     fn reject(self, f: |value: &T| -> bool) -> Vec<T>;
[INFO] [stdout]    |                      ^^^^^^^^^^^^^^^^^^^^^ help: try naming the parameter or explicitly ignoring it: `_: : |value: &T| -> bool`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(anonymous_parameters)]` on by default
[INFO] [stdout]    = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in the 2018 edition!
[INFO] [stdout]    = note: for more information, see issue #41686 <https://github.com/rust-lang/rust/issues/41686>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: anonymous parameters are deprecated and will be removed in the next edition.
[INFO] [stdout]   --> src/hashmap/mod.rs:60:30
[INFO] [stdout]    |
[INFO] [stdout] 60 |     fn pick_by_filter(self, f: |k: &K, v: &V| -> bool) -> HashMap<K, V>;
[INFO] [stdout]    |                              ^^^^^^^^ help: try naming the parameter or explicitly ignoring it: `_: : |k: &K`
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in the 2018 edition!
[INFO] [stdout]    = note: for more information, see issue #41686 <https://github.com/rust-lang/rust/issues/41686>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: anonymous parameters are deprecated and will be removed in the next edition.
[INFO] [stdout]   --> src/hashmap/mod.rs:99:30
[INFO] [stdout]    |
[INFO] [stdout] 99 |     fn omit_by_filter(self, f: |k: &K, v: &V| -> bool) -> HashMap<K, V>;
[INFO] [stdout]    |                              ^^^^^^^^ help: try naming the parameter or explicitly ignoring it: `_: : |k: &K`
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in the 2018 edition!
[INFO] [stdout]    = note: for more information, see issue #41686 <https://github.com/rust-lang/rust/issues/41686>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: anonymous parameters are deprecated and will be removed in the next edition.
[INFO] [stdout]   --> src/btreemap/mod.rs:60:30
[INFO] [stdout]    |
[INFO] [stdout] 60 |     fn pick_by_filter(self, f: |k: &K, v: &V| -> bool) -> BTreeMap<K, V>;
[INFO] [stdout]    |                              ^^^^^^^^ help: try naming the parameter or explicitly ignoring it: `_: : |k: &K`
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in the 2018 edition!
[INFO] [stdout]    = note: for more information, see issue #41686 <https://github.com/rust-lang/rust/issues/41686>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: anonymous parameters are deprecated and will be removed in the next edition.
[INFO] [stdout]   --> src/btreemap/mod.rs:99:30
[INFO] [stdout]    |
[INFO] [stdout] 99 |     fn omit_by_filter(self, f: |k: &K, v: &V| -> bool) -> BTreeMap<K, V>;
[INFO] [stdout]    |                              ^^^^^^^^ help: try naming the parameter or explicitly ignoring it: `_: : |k: &K`
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in the 2018 edition!
[INFO] [stdout]    = note: for more information, see issue #41686 <https://github.com/rust-lang/rust/issues/41686>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0308]: mismatched types
[INFO] [stdout]   --> src/hashmap/expands.rs:19:30
[INFO] [stdout]    |
[INFO] [stdout] 5  | impl<'a, K: Eq + Hash + Clone, V: Eq + Hash + Clone> HashMapU<K, V> for HashMap<K, V> {
[INFO] [stdout]    |          - this type parameter
[INFO] [stdout] ...
[INFO] [stdout] 19 |                 let v = self[element].clone();
[INFO] [stdout]    |                              ^^^^^^^
[INFO] [stdout]    |                              |
[INFO] [stdout]    |                              expected `&K`, found type parameter `K`
[INFO] [stdout]    |                              help: consider borrowing here: `&element`
[INFO] [stdout]    |
[INFO] [stdout]    = note:   expected reference `&K`
[INFO] [stdout]            found type parameter `K`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0308]: mismatched types
[INFO] [stdout]   --> src/hashmap/expands.rs:30:31
[INFO] [stdout]    |
[INFO] [stdout] 5  | impl<'a, K: Eq + Hash + Clone, V: Eq + Hash + Clone> HashMapU<K, V> for HashMap<K, V> {
[INFO] [stdout]    |          - this type parameter
[INFO] [stdout] ...
[INFO] [stdout] 30 |             let cp_val = self[cp_key].clone();
[INFO] [stdout]    |                               ^^^^^^
[INFO] [stdout]    |                               |
[INFO] [stdout]    |                               expected `&K`, found type parameter `K`
[INFO] [stdout]    |                               help: consider borrowing here: `&cp_key`
[INFO] [stdout]    |
[INFO] [stdout]    = note:   expected reference `&K`
[INFO] [stdout]            found type parameter `K`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0308]: mismatched types
[INFO] [stdout]   --> src/hashmap/expands.rs:49:31
[INFO] [stdout]    |
[INFO] [stdout] 5  | impl<'a, K: Eq + Hash + Clone, V: Eq + Hash + Clone> HashMapU<K, V> for HashMap<K, V> {
[INFO] [stdout]    |          - this type parameter
[INFO] [stdout] ...
[INFO] [stdout] 49 |             let cp_val = self[cp_key].clone();
[INFO] [stdout]    |                               ^^^^^^
[INFO] [stdout]    |                               |
[INFO] [stdout]    |                               expected `&K`, found type parameter `K`
[INFO] [stdout]    |                               help: consider borrowing here: `&cp_key`
[INFO] [stdout]    |
[INFO] [stdout]    = note:   expected reference `&K`
[INFO] [stdout]            found type parameter `K`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 41 previous errors; 5 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] Some errors have detailed explanations: E0308, E0412, E0425.
[INFO] [stdout] 
[INFO] [stdout] For more information about an error, try `rustc --explain E0308`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `underscore`
[INFO] [stderr] 
[INFO] [stderr] To learn more, run the command again with --verbose.
[INFO] running `Command { std: "docker" "inspect" "e1721a9e9cf885064a2d0bfa0ee0a755fb68a4b979d16f9ab61f2464228f75ab", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "e1721a9e9cf885064a2d0bfa0ee0a755fb68a4b979d16f9ab61f2464228f75ab", kill_on_drop: false }`
[INFO] [stdout] e1721a9e9cf885064a2d0bfa0ee0a755fb68a4b979d16f9ab61f2464228f75ab
