[INFO] fetching crate traverse 0.0.12...
[INFO] checking traverse-0.0.12 against master#9610dfe5a9a731ced1ea4923ecbd0c57fe367898 for beta-170-4
[INFO] extracting crate traverse 0.0.12 into /workspace/builds/worker-2-tc1/source
[INFO] validating manifest of crates.io crate traverse 0.0.12 on toolchain 9610dfe5a9a731ced1ea4923ecbd0c57fe367898
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+9610dfe5a9a731ced1ea4923ecbd0c57fe367898" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate traverse 0.0.12
[INFO] finished tweaking crates.io crate traverse 0.0.12
[INFO] tweaked toml for crates.io crate traverse 0.0.12 written to /workspace/builds/worker-2-tc1/source/Cargo.toml
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" __CARGO_TEST_CHANNEL_OVERRIDE_DO_NOT_USE_THIS="nightly" "/workspace/cargo-home/bin/cargo" "+9610dfe5a9a731ced1ea4923ecbd0c57fe367898" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+9610dfe5a9a731ced1ea4923ecbd0c57fe367898" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr] warning: dependency (num) specified without providing a local path, Git repository, version, or workspace dependency to use. This will be considered an error in future versions
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc1/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@sha256:19e73879b68f455e41552ea35293514db52ea292d993f571636dbffedb77a1ee" "/opt/rustwide/cargo-home/bin/cargo" "+9610dfe5a9a731ced1ea4923ecbd0c57fe367898" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] d9405c49a94a89759c1d16845b97b3c23c11fddaa53be4dd27e3bbb66dec949a
[INFO] running `Command { std: "docker" "start" "-a" "d9405c49a94a89759c1d16845b97b3c23c11fddaa53be4dd27e3bbb66dec949a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "d9405c49a94a89759c1d16845b97b3c23c11fddaa53be4dd27e3bbb66dec949a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "d9405c49a94a89759c1d16845b97b3c23c11fddaa53be4dd27e3bbb66dec949a", kill_on_drop: false }`
[INFO] [stdout] d9405c49a94a89759c1d16845b97b3c23c11fddaa53be4dd27e3bbb66dec949a
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc1/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" "RUSTDOCFLAGS=--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@sha256:19e73879b68f455e41552ea35293514db52ea292d993f571636dbffedb77a1ee" "/opt/rustwide/cargo-home/bin/cargo" "+9610dfe5a9a731ced1ea4923ecbd0c57fe367898" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 4a21f59efaeb7de82ed68c8e836462ac477d848d05c2342de64dcda60a052bb3
[INFO] running `Command { std: "docker" "start" "-a" "4a21f59efaeb7de82ed68c8e836462ac477d848d05c2342de64dcda60a052bb3", kill_on_drop: false }`
[INFO] [stderr] warning: dependency (num) specified without providing a local path, Git repository, version, or workspace dependency to use. This will be considered an error in future versions
[INFO] [stderr]    Compiling num-traits v0.2.15
[INFO] [stderr]    Compiling num-integer v0.1.45
[INFO] [stderr]    Compiling num-bigint v0.4.3
[INFO] [stderr]    Compiling num-iter v0.1.43
[INFO] [stderr]    Compiling num-rational v0.4.1
[INFO] [stderr]    Compiling log v0.4.18
[INFO] [stderr]     Checking regex v1.8.3
[INFO] [stderr]     Checking rand v0.8.5
[INFO] [stderr]     Checking env_logger v0.8.4
[INFO] [stderr]     Checking quickcheck v1.0.3
[INFO] [stderr]     Checking num-complex v0.4.3
[INFO] [stderr]     Checking num v0.4.0
[INFO] [stderr]     Checking traverse v0.0.12 (/opt/rustwide/workdir)
[INFO] [stdout] warning: anonymous parameters are deprecated and will be removed in the next edition
[INFO] [stdout]   --> src/lib.rs:23:25
[INFO] [stdout]    |
[INFO] [stdout] 23 |     fn foreach<F>(self, F) where F: FnMut(Self::Item) -> bool;
[INFO] [stdout]    |                         ^ help: try naming the parameter or explicitly ignoring it: `_: F`
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2018!
[INFO] [stdout]    = note: for more information, see issue #41686 <https://github.com/rust-lang/rust/issues/41686>
[INFO] [stdout]    = note: `#[warn(anonymous_parameters)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: anonymous parameters are deprecated and will be removed in the next edition
[INFO] [stdout]   --> src/lib.rs:23:25
[INFO] [stdout]    |
[INFO] [stdout] 23 |     fn foreach<F>(self, F) where F: FnMut(Self::Item) -> bool;
[INFO] [stdout]    |                         ^ help: try naming the parameter or explicitly ignoring it: `_: F`
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2018!
[INFO] [stdout]    = note: for more information, see issue #41686 <https://github.com/rust-lang/rust/issues/41686>
[INFO] [stdout]    = note: `#[warn(anonymous_parameters)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0308]: mismatched types
[INFO] [stdout]   --> src/impls/slice.rs:28:47
[INFO] [stdout]    |
[INFO] [stdout] 28 |         let traversal: Vec<usize> = data.map(|&x| x).collect();
[INFO] [stdout]    |                                               ^-
[INFO] [stdout]    |                                               ||
[INFO] [stdout]    |                                               |expected due to this
[INFO] [stdout]    |                                               expected integer, found `&_`
[INFO] [stdout]    |
[INFO] [stdout]    = note:   expected type `{integer}`
[INFO] [stdout]            found reference `&_`
[INFO] [stdout] help: consider removing `&` from the pattern
[INFO] [stdout]    |
[INFO] [stdout] 28 -         let traversal: Vec<usize> = data.map(|&x| x).collect();
[INFO] [stdout] 28 +         let traversal: Vec<usize> = data.map(|x| x).collect();
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0277]: the trait bound `Vec<usize>: FromTraversal<&_>` is not satisfied
[INFO] [stdout]   --> src/impls/slice.rs:28:54
[INFO] [stdout]    |
[INFO] [stdout] 28 |         let traversal: Vec<usize> = data.map(|&x| x).collect();
[INFO] [stdout]    |                                                      ^^^^^^^ the trait `FromTraversal<&_>` is not implemented for `Vec<usize>`
[INFO] [stdout]    |
[INFO] [stdout]    = help: the trait `FromTraversal<T>` is implemented for `Vec<T>`
[INFO] [stdout] note: the method call chain might not have had the expected associated types
[INFO] [stdout]   --> src/impls/slice.rs:28:42
[INFO] [stdout]    |
[INFO] [stdout] 27 |         let data = [1, 2, 5, 4, 6, 7];
[INFO] [stdout]    |                    ------------------ this expression has type `[{integer}; 6]`
[INFO] [stdout] 28 |         let traversal: Vec<usize> = data.map(|&x| x).collect();
[INFO] [stdout]    |                                          ^^^^^^^^^^^ `Traversal::Item` is `&_` here
[INFO] [stdout] note: required by a bound in `Traversal::collect`
[INFO] [stdout]   --> src/lib.rs:98:14
[INFO] [stdout]    |
[INFO] [stdout] 97 |     fn collect<D>(self) -> D
[INFO] [stdout]    |        ------- required by a bound in this associated function
[INFO] [stdout] 98 |     where D: FromTraversal<Self::Item> {
[INFO] [stdout]    |              ^^^^^^^^^^^^^^^^^^^^^^^^^ required by this bound in `Traversal::collect`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0308]: mismatched types
[INFO] [stdout]   --> src/impls/slice.rs:35:44
[INFO] [stdout]    |
[INFO] [stdout] 35 |         let traversal: Vec<()> = data.map(|&x| x).collect();
[INFO] [stdout]    |                                            ^-
[INFO] [stdout]    |                                            ||
[INFO] [stdout]    |                                            |expected due to this
[INFO] [stdout]    |                                            expected `()`, found `&_`
[INFO] [stdout]    |
[INFO] [stdout]    = note: expected unit type `()`
[INFO] [stdout]               found reference `&_`
[INFO] [stdout] help: consider removing `&` from the pattern
[INFO] [stdout]    |
[INFO] [stdout] 35 -         let traversal: Vec<()> = data.map(|&x| x).collect();
[INFO] [stdout] 35 +         let traversal: Vec<()> = data.map(|x| x).collect();
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0277]: the trait bound `Vec<()>: FromTraversal<&_>` is not satisfied
[INFO] [stdout]   --> src/impls/slice.rs:35:51
[INFO] [stdout]    |
[INFO] [stdout] 35 |         let traversal: Vec<()> = data.map(|&x| x).collect();
[INFO] [stdout]    |                                                   ^^^^^^^ the trait `FromTraversal<&_>` is not implemented for `Vec<()>`
[INFO] [stdout]    |
[INFO] [stdout]    = help: the trait `FromTraversal<T>` is implemented for `Vec<T>`
[INFO] [stdout] note: the method call chain might not have had the expected associated types
[INFO] [stdout]   --> src/impls/slice.rs:35:39
[INFO] [stdout]    |
[INFO] [stdout] 34 |         let data = [(), (), ()];
[INFO] [stdout]    |                    ------------ this expression has type `[(); 3]`
[INFO] [stdout] 35 |         let traversal: Vec<()> = data.map(|&x| x).collect();
[INFO] [stdout]    |                                       ^^^^^^^^^^^ `Traversal::Item` is `&_` here
[INFO] [stdout] note: required by a bound in `Traversal::collect`
[INFO] [stdout]   --> src/lib.rs:98:14
[INFO] [stdout]    |
[INFO] [stdout] 97 |     fn collect<D>(self) -> D
[INFO] [stdout]    |        ------- required by a bound in this associated function
[INFO] [stdout] 98 |     where D: FromTraversal<Self::Item> {
[INFO] [stdout]    |              ^^^^^^^^^^^^^^^^^^^^^^^^^ required by this bound in `Traversal::collect`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 4 previous errors; 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] Some errors have detailed explanations: E0277, E0308.
[INFO] [stdout] 
[INFO] [stdout] For more information about an error, try `rustc --explain E0277`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `traverse` (lib test) due to 5 previous errors; 1 warning emitted
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] running `Command { std: "docker" "inspect" "4a21f59efaeb7de82ed68c8e836462ac477d848d05c2342de64dcda60a052bb3", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "4a21f59efaeb7de82ed68c8e836462ac477d848d05c2342de64dcda60a052bb3", kill_on_drop: false }`
[INFO] [stdout] 4a21f59efaeb7de82ed68c8e836462ac477d848d05c2342de64dcda60a052bb3
