[INFO] crate attr 0.1.0 is already in cache
[INFO] checking attr-0.1.0 against master#45d050cde277b22a755847338f2acc2c7b834141 for pr-71393
[INFO] extracting crate attr 0.1.0 into /workspace/builds/worker-6/source
[INFO] validating manifest of crates.io crate attr 0.1.0 on toolchain 45d050cde277b22a755847338f2acc2c7b834141
[INFO] running `"/workspace/cargo-home/bin/cargo" "+45d050cde277b22a755847338f2acc2c7b834141" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started tweaking crates.io crate attr 0.1.0
[INFO] finished tweaking crates.io crate attr 0.1.0
[INFO] tweaked toml for crates.io crate attr 0.1.0 written to /workspace/builds/worker-6/source/Cargo.toml
[INFO] running `"/workspace/cargo-home/bin/cargo" "+45d050cde277b22a755847338f2acc2c7b834141" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"`
[INFO] running `"/workspace/cargo-home/bin/cargo" "+45d050cde277b22a755847338f2acc2c7b834141" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] [stderr] warning: only one of `license` or `license-file` is necessary
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `"docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/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" "MAP_USER_ID=0" "-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" "--network" "none" "rustops/crates-build-env" "/opt/rustwide/cargo-home/bin/cargo" "+45d050cde277b22a755847338f2acc2c7b834141" "check" "--frozen" "--all" "--all-targets"`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] 74a4ad45d1490eaeb4043d3af7ad5ede84a06508f8eaf09b13571836f0db6f73
[INFO] running `"docker" "start" "-a" "74a4ad45d1490eaeb4043d3af7ad5ede84a06508f8eaf09b13571836f0db6f73"`
[INFO] [stderr] warning: only one of `license` or `license-file` is necessary
[INFO] [stderr]    Compiling autocfg v1.0.0
[INFO] [stderr]     Checking dtoa v0.2.2
[INFO] [stderr]     Checking serde v0.8.23
[INFO] [stderr]     Checking itoa v0.1.1
[INFO] [stderr]     Checking attr v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/lib.rs:66:36
[INFO] [stderr]    |
[INFO] [stderr] 66 |     fn iter(&self, i: Type) -> Box<Iterator<Item=Self::Item> + 'a>;
[INFO] [stderr]    |                                    ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn Iterator<Item=Self::Item> + 'a`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(bare_trait_objects)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/lib.rs:78:43
[INFO] [stderr]    |
[INFO] [stderr] 78 |     fn iter(&self, i: Type) -> Result<Box<Iterator<Item=Self::Item> + 'a>>;
[INFO] [stderr]    |                                           ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn Iterator<Item=Self::Item> + 'a`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]    --> src/lib.rs:187:105
[INFO] [stderr]     |
[INFO] [stderr] 187 | impl<'a, X: 'a, Z: 'a, A: IterableAttr<'a, X>, R: Traverse<'a, 'a, A::Item, Z>> Traverse<'a, 'a, X, Box<Iterator<Item=Result<Z>> + 'a>> for MapPath<A, R> {
[INFO] [stderr]     |                                                                                                         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn Iterator<Item=Result<Z>> + 'a`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]    --> src/lib.rs:189:49
[INFO] [stderr]     |
[INFO] [stderr] 189 |     fn traverse(&'a self, obj: X) -> Result<Box<Iterator<Item=Result<Z>> + 'a>> {
[INFO] [stderr]     |                                                 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn Iterator<Item=Result<Z>> + 'a`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]    --> src/lib.rs:285:46
[INFO] [stderr]     |
[INFO] [stderr] 285 |               Self: Traverse<'a, 'b, NY, Box<std::iter::Iterator<Item=Result<Z>>>>
[INFO] [stderr]     |                                              ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn std::iter::Iterator<Item=Result<Z>>`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]    --> src/lib.rs:281:102
[INFO] [stderr]     |
[INFO] [stderr] 281 |     pub fn from<'a, 'b: 'a, X: 'b, Y: 'b, Z: 'b, NX: 'b, NY: 'b, NA>(self, attr: NA) -> Path<NX, Box<std::iter::Iterator<Item=Result<Z>> + 'a>, NA, Self>
[INFO] [stderr]     |                                                                                                      ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn std::iter::Iterator<Item=Result<Z>> + 'a`
[INFO] [stderr] 
[INFO] [stderr] warning: `#[inline]` is ignored on function prototypes
[INFO] [stderr]   --> src/lib.rs:87:5
[INFO] [stderr]    |
[INFO] [stderr] 87 |     #[inline]
[INFO] [stderr]    |     ^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_attributes)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: 7 warnings emitted
[INFO] [stderr] 
[INFO] [stderr]    Compiling num-traits v0.2.11
[INFO] [stderr]     Checking num-traits v0.1.43
[INFO] [stderr]     Checking serde_json v0.8.6
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]    --> benches/access_bench.rs:147:43
[INFO] [stderr]     |
[INFO] [stderr] 147 |         fn iter(&self, i: &'a Foo) -> Box<Iterator<Item=&'a i32> + 'a> {
[INFO] [stderr]     |                                           ^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn Iterator<Item=&'a i32> + 'a`
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(bare_trait_objects)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]    --> benches/access_bench.rs:155:47
[INFO] [stderr]     |
[INFO] [stderr] 155 |         fn iter(&self, i: &'a mut Foo) -> Box<Iterator<Item=&'a mut i32> +'a> {
[INFO] [stderr]     |                                               ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn Iterator<Item=&'a mut i32> +'a`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/lib.rs:66:36
[INFO] [stderr]    |
[INFO] [stderr] 66 |     fn iter(&self, i: Type) -> Box<Iterator<Item=Self::Item> + 'a>;
[INFO] [stderr]    |                                    ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn Iterator<Item=Self::Item> + 'a`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(bare_trait_objects)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/lib.rs:78:43
[INFO] [stderr]    |
[INFO] [stderr] 78 |     fn iter(&self, i: Type) -> Result<Box<Iterator<Item=Self::Item> + 'a>>;
[INFO] [stderr]    |                                           ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn Iterator<Item=Self::Item> + 'a`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]    --> src/lib.rs:187:105
[INFO] [stderr]     |
[INFO] [stderr] 187 | impl<'a, X: 'a, Z: 'a, A: IterableAttr<'a, X>, R: Traverse<'a, 'a, A::Item, Z>> Traverse<'a, 'a, X, Box<Iterator<Item=Result<Z>> + 'a>> for MapPath<A, R> {
[INFO] [stderr]     |                                                                                                         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn Iterator<Item=Result<Z>> + 'a`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]    --> src/lib.rs:189:49
[INFO] [stderr]     |
[INFO] [stderr] 189 |     fn traverse(&'a self, obj: X) -> Result<Box<Iterator<Item=Result<Z>> + 'a>> {
[INFO] [stderr]     |                                                 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn Iterator<Item=Result<Z>> + 'a`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]    --> src/lib.rs:285:46
[INFO] [stderr]     |
[INFO] [stderr] 285 |               Self: Traverse<'a, 'b, NY, Box<std::iter::Iterator<Item=Result<Z>>>>
[INFO] [stderr]     |                                              ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn std::iter::Iterator<Item=Result<Z>>`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]    --> src/lib.rs:281:102
[INFO] [stderr]     |
[INFO] [stderr] 281 |     pub fn from<'a, 'b: 'a, X: 'b, Y: 'b, Z: 'b, NX: 'b, NY: 'b, NA>(self, attr: NA) -> Path<NX, Box<std::iter::Iterator<Item=Result<Z>> + 'a>, NA, Self>
[INFO] [stderr]     |                                                                                                      ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn std::iter::Iterator<Item=Result<Z>> + 'a`
[INFO] [stderr] 
[INFO] [stderr] warning: `#[inline]` is ignored on function prototypes
[INFO] [stderr]   --> src/lib.rs:87:5
[INFO] [stderr]    |
[INFO] [stderr] 87 |     #[inline]
[INFO] [stderr]    |     ^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_attributes)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]    --> tests/nested.rs:143:43
[INFO] [stderr]     |
[INFO] [stderr] 143 |         fn iter(&self, i: &'a Foo) -> Box<Iterator<Item=&'a i32> + 'a> {
[INFO] [stderr]     |                                           ^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn Iterator<Item=&'a i32> + 'a`
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(bare_trait_objects)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]    --> tests/nested.rs:151:47
[INFO] [stderr]     |
[INFO] [stderr] 151 |         fn iter(&self, i: &'a mut Foo) -> Box<Iterator<Item=&'a mut i32> +'a> {
[INFO] [stderr]     |                                               ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn Iterator<Item=&'a mut i32> +'a`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> tests/mapping.rs:88:43
[INFO] [stderr]    |
[INFO] [stderr] 88 |         fn iter(&self, i: &'a Foo) -> Box<Iterator<Item=&'a Bla> + 'a> {
[INFO] [stderr]    |                                           ^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn Iterator<Item=&'a Bla> + 'a`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(bare_trait_objects)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: 7 warnings emitted
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]    --> tests/simple.rs:108:9
[INFO] [stderr]     |
[INFO] [stderr] 108 |     let mut batz = Bar::attrs().batz.get(&mut f);
[INFO] [stderr]     |         ----^^^^
[INFO] [stderr]     |         |
[INFO] [stderr]     |         help: remove this `mut`
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(unused_mut)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: 2 warnings emitted
[INFO] [stderr] 
[INFO] [stderr] warning: 1 warning emitted
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]    --> tests/nested.rs:252:13
[INFO] [stderr]     |
[INFO] [stderr] 252 |         let mut x: &mut i32 = foo::Numbers.at(&mut f, 1);
[INFO] [stderr]     |             ----^
[INFO] [stderr]     |             |
[INFO] [stderr]     |             help: remove this `mut`
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(unused_mut)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: 3 warnings emitted
[INFO] [stderr] 
[INFO] [stderr] warning: 1 warning emitted
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 7.57s
[INFO] running `"docker" "inspect" "74a4ad45d1490eaeb4043d3af7ad5ede84a06508f8eaf09b13571836f0db6f73"`
[INFO] running `"docker" "rm" "-f" "74a4ad45d1490eaeb4043d3af7ad5ede84a06508f8eaf09b13571836f0db6f73"`
[INFO] [stdout] 74a4ad45d1490eaeb4043d3af7ad5ede84a06508f8eaf09b13571836f0db6f73