[INFO] fetching crate ref_iter 0.4.2...
[INFO] checking ref_iter-0.4.2 against try#b6bca0d7327839b5e3f7a7779947cb9113d08917+rustflags=-Zstrict-projection-item-bounds for 150662-leaf
[INFO] extracting crate ref_iter 0.4.2 into /workspace/builds/worker-3-tc2/source
[INFO] started tweaking crates.io crate ref_iter 0.4.2
[INFO] removed 0 missing tests
[INFO] finished tweaking crates.io crate ref_iter 0.4.2
[INFO] tweaked toml for crates.io crate ref_iter 0.4.2 written to /workspace/builds/worker-3-tc2/source/Cargo.toml
[INFO] validating manifest of crates.io crate ref_iter 0.4.2 on toolchain b6bca0d7327839b5e3f7a7779947cb9113d08917
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+b6bca0d7327839b5e3f7a7779947cb9113d08917" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate crates.io crate ref_iter 0.4.2 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" "+b6bca0d7327839b5e3f7a7779947cb9113d08917" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc2/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:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+b6bca0d7327839b5e3f7a7779947cb9113d08917" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 67f1afeaa978024a21265788d72e025689880558a1d02b5bc0315d2913c0e39a
[INFO] running `Command { std: "docker" "start" "-a" "67f1afeaa978024a21265788d72e025689880558a1d02b5bc0315d2913c0e39a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "67f1afeaa978024a21265788d72e025689880558a1d02b5bc0315d2913c0e39a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "67f1afeaa978024a21265788d72e025689880558a1d02b5bc0315d2913c0e39a", kill_on_drop: false }`
[INFO] [stdout] 67f1afeaa978024a21265788d72e025689880558a1d02b5bc0315d2913c0e39a
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc2/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 -Zstrict-projection-item-bounds" "-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:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+b6bca0d7327839b5e3f7a7779947cb9113d08917" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] debdc81fc5f3409474458f0a5a4a9ff55dfa1c61df82e891d96f2e9795dbb226
[INFO] running `Command { std: "docker" "start" "-a" "debdc81fc5f3409474458f0a5a4a9ff55dfa1c61df82e891d96f2e9795dbb226", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.86
[INFO] [stderr]    Compiling quote v1.0.37
[INFO] [stderr]    Compiling syn v2.0.77
[INFO] [stderr]    Compiling ref_iter_macro v0.3.1
[INFO] [stderr]     Checking ref_iter v0.4.2 (/opt/rustwide/workdir)
[INFO] [stdout] error[E0284]: type annotations needed
[INFO] [stdout]   --> src/types/into_ref_iter.rs:33:17
[INFO] [stdout]    |
[INFO] [stdout] 33 |     I: Iterator<Item = &'a T>,
[INFO] [stdout]    |                 ^^^^^^^^^^^^ cannot infer type
[INFO] [stdout]    |
[INFO] [stdout]    = note: cannot satisfy `<I as Iterator>::Item == _`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0284]: type annotations needed
[INFO] [stdout]   --> src/types/into_ref_mut_iter.rs:36:17
[INFO] [stdout]    |
[INFO] [stdout] 36 |     I: Iterator<Item = &'a mut T>,
[INFO] [stdout]    |                 ^^^^^^^^^^^^^^^^ cannot infer type
[INFO] [stdout]    |
[INFO] [stdout]    = note: cannot satisfy `<I as Iterator>::Item == _`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0284]: type annotations needed
[INFO] [stdout]   --> src/types/into_ref_iter.rs:33:17
[INFO] [stdout]    |
[INFO] [stdout] 33 |     I: Iterator<Item = &'a T>,
[INFO] [stdout]    |                 ^^^^^^^^^^^^ cannot infer type
[INFO] [stdout]    |
[INFO] [stdout]    = note: cannot satisfy `<I as Iterator>::Item == _`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0284]: type annotations needed
[INFO] [stdout]   --> src/types/into_ref_mut_iter.rs:36:17
[INFO] [stdout]    |
[INFO] [stdout] 36 |     I: Iterator<Item = &'a mut T>,
[INFO] [stdout]    |                 ^^^^^^^^^^^^^^^^ cannot infer type
[INFO] [stdout]    |
[INFO] [stdout]    = note: cannot satisfy `<I as Iterator>::Item == _`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0284]: type annotations needed: cannot satisfy `<I as Iterator>::Item == &'a T`
[INFO] [stdout]   --> src/types/into_ref_iter.rs:38:9
[INFO] [stdout]    |
[INFO] [stdout] 38 |         Self {
[INFO] [stdout]    |         ^^^^ cannot satisfy `<I as Iterator>::Item == &'a T`
[INFO] [stdout]    |
[INFO] [stdout] note: required by a bound in `IntoRefIter`
[INFO] [stdout]   --> src/types/into_ref_iter.rs:24:17
[INFO] [stdout]    |
[INFO] [stdout] 22 | pub struct IntoRefIter<'a, I, T>
[INFO] [stdout]    |            ----------- required by a bound in this struct
[INFO] [stdout] 23 | where
[INFO] [stdout] 24 |     I: Iterator<Item = &'a T>,
[INFO] [stdout]    |                 ^^^^^^^^^^^^ required by this bound in `IntoRefIter`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0284]: type annotations needed: cannot satisfy `<I as Iterator>::Item == &'a mut T`
[INFO] [stdout]   --> src/types/into_ref_mut_iter.rs:41:9
[INFO] [stdout]    |
[INFO] [stdout] 41 |         Self {
[INFO] [stdout]    |         ^^^^ cannot satisfy `<I as Iterator>::Item == &'a mut T`
[INFO] [stdout]    |
[INFO] [stdout] note: required by a bound in `IntoRefMutIter`
[INFO] [stdout]   --> src/types/into_ref_mut_iter.rs:27:17
[INFO] [stdout]    |
[INFO] [stdout] 25 | pub struct IntoRefMutIter<'a, I, T>
[INFO] [stdout]    |            -------------- required by a bound in this struct
[INFO] [stdout] 26 | where
[INFO] [stdout] 27 |     I: Iterator<Item = &'a mut T>,
[INFO] [stdout]    |                 ^^^^^^^^^^^^^^^^ required by this bound in `IntoRefMutIter`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0284]: type annotations needed: cannot satisfy `<I as Iterator>::Item == &'a T`
[INFO] [stdout]   --> src/types/into_ref_iter.rs:38:9
[INFO] [stdout]    |
[INFO] [stdout] 38 |         Self {
[INFO] [stdout]    |         ^^^^ cannot satisfy `<I as Iterator>::Item == &'a T`
[INFO] [stdout]    |
[INFO] [stdout] note: required by a bound in `IntoRefIter`
[INFO] [stdout]   --> src/types/into_ref_iter.rs:24:17
[INFO] [stdout]    |
[INFO] [stdout] 22 | pub struct IntoRefIter<'a, I, T>
[INFO] [stdout]    |            ----------- required by a bound in this struct
[INFO] [stdout] 23 | where
[INFO] [stdout] 24 |     I: Iterator<Item = &'a T>,
[INFO] [stdout]    |                 ^^^^^^^^^^^^ required by this bound in `IntoRefIter`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0284]: type annotations needed: cannot satisfy `<I as Iterator>::Item == &'a mut T`
[INFO] [stdout]   --> src/types/into_ref_mut_iter.rs:41:9
[INFO] [stdout]    |
[INFO] [stdout] 41 |         Self {
[INFO] [stdout]    |         ^^^^ cannot satisfy `<I as Iterator>::Item == &'a mut T`
[INFO] [stdout]    |
[INFO] [stdout] note: required by a bound in `IntoRefMutIter`
[INFO] [stdout]   --> src/types/into_ref_mut_iter.rs:27:17
[INFO] [stdout]    |
[INFO] [stdout] 25 | pub struct IntoRefMutIter<'a, I, T>
[INFO] [stdout]    |            -------------- required by a bound in this struct
[INFO] [stdout] 26 | where
[INFO] [stdout] 27 |     I: Iterator<Item = &'a mut T>,
[INFO] [stdout]    |                 ^^^^^^^^^^^^^^^^ required by this bound in `IntoRefMutIter`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0284`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `ref_iter` (lib) due to 4 previous errors
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stdout] For more information about this error, try `rustc --explain E0284`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `ref_iter` (lib test) due to 4 previous errors
[INFO] running `Command { std: "docker" "inspect" "debdc81fc5f3409474458f0a5a4a9ff55dfa1c61df82e891d96f2e9795dbb226", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "debdc81fc5f3409474458f0a5a4a9ff55dfa1c61df82e891d96f2e9795dbb226", kill_on_drop: false }`
[INFO] [stdout] debdc81fc5f3409474458f0a5a4a9ff55dfa1c61df82e891d96f2e9795dbb226