[INFO] cloning repository https://github.com/timwee/rust-type-exercises [INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/timwee/rust-type-exercises" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Ftimwee%2Frust-type-exercises", kill_on_drop: false }` [INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Ftimwee%2Frust-type-exercises'... [INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }` [INFO] [stdout] e0b3917da74614ea01430b460b9e3fee9cf4b958 [INFO] checking timwee/rust-type-exercises against master#08cd08fbef8c6663b052d8d9e4930d5696cbb8a7 for 150662-leaf [INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Ftimwee%2Frust-type-exercises" "/workspace/builds/worker-6-tc1/source", kill_on_drop: false }` [INFO] [stderr] Cloning into '/workspace/builds/worker-6-tc1/source'... [INFO] [stderr] done. [INFO] started tweaking git repo https://github.com/timwee/rust-type-exercises [INFO] finished tweaking git repo https://github.com/timwee/rust-type-exercises [INFO] tweaked toml for git repo https://github.com/timwee/rust-type-exercises written to /workspace/builds/worker-6-tc1/source/Cargo.toml [INFO] validating manifest of git repo https://github.com/timwee/rust-type-exercises on toolchain 08cd08fbef8c6663b052d8d9e4930d5696cbb8a7 [INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+08cd08fbef8c6663b052d8d9e4930d5696cbb8a7" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }` [INFO] crate git repo https://github.com/timwee/rust-type-exercises 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" "+08cd08fbef8c6663b052d8d9e4930d5696cbb8a7" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }` [INFO] [stderr] Updating crates.io index [INFO] [stderr] Downloading crates ... [INFO] [stderr] Downloaded cargo-expand v1.0.90 [INFO] [stderr] Downloaded thiserror-impl v1.0.64 [INFO] [stderr] Downloaded thiserror v1.0.64 [INFO] [stderr] Downloaded bytesize v1.3.0 [INFO] [stderr] Downloaded toolchain_find v0.4.0 [INFO] [stderr] Downloaded clircle v0.4.0 [INFO] [stderr] Downloaded grep-cli v0.1.11 [INFO] [stderr] Downloaded ansi_colours v1.2.3 [INFO] [stderr] Downloaded anyhow v1.0.89 [INFO] [stderr] Downloaded prettyplease v0.2.22 [INFO] [stderr] Downloaded proc-macro2 v1.0.87 [INFO] [stderr] Downloaded nu-ansi-term v0.49.0 [INFO] [stderr] Downloaded fs-err v2.11.0 [INFO] [stderr] Downloaded std_prelude v0.2.12 [INFO] [stderr] Downloaded path_abs v0.5.1 [INFO] [stderr] Downloaded hashbrown v0.15.0 [INFO] [stderr] Downloaded syn v2.0.79 [INFO] [stderr] Downloaded content_inspector v0.2.4 [INFO] [stderr] Downloaded cargo-subcommand-metadata v0.1.0 [INFO] [stderr] Downloaded syn-select v0.3.0 [INFO] [stderr] Downloaded regex v1.11.0 [INFO] [stderr] Downloaded libc v0.2.159 [INFO] [stderr] Downloaded syntect v5.2.0 [INFO] [stderr] Downloaded bat v0.24.0 [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-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:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+08cd08fbef8c6663b052d8d9e4930d5696cbb8a7" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }` [INFO] [stdout] 1a790bf9a046452d96df0b6f308f3cf89df3961b6e0bd3a25f3c03ae6f2a9655 [INFO] running `Command { std: "docker" "start" "-a" "1a790bf9a046452d96df0b6f308f3cf89df3961b6e0bd3a25f3c03ae6f2a9655", kill_on_drop: false }` [INFO] running `Command { std: "docker" "inspect" "1a790bf9a046452d96df0b6f308f3cf89df3961b6e0bd3a25f3c03ae6f2a9655", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "1a790bf9a046452d96df0b6f308f3cf89df3961b6e0bd3a25f3c03ae6f2a9655", kill_on_drop: false }` [INFO] [stdout] 1a790bf9a046452d96df0b6f308f3cf89df3961b6e0bd3a25f3c03ae6f2a9655 [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-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:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+08cd08fbef8c6663b052d8d9e4930d5696cbb8a7" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }` [INFO] [stdout] 5e4fba17c281bc797a208b594d11650385d922468f38838e185eba1c1e4f7b4d [INFO] running `Command { std: "docker" "start" "-a" "5e4fba17c281bc797a208b594d11650385d922468f38838e185eba1c1e4f7b4d", kill_on_drop: false }` [INFO] [stderr] warning: type-exercise-in-rust-mine v0.1.0 (/opt/rustwide/workdir) ignoring invalid dependency `cargo-expand` which is missing a lib target [INFO] [stderr] Compiling proc-macro2 v1.0.87 [INFO] [stderr] Compiling radium v0.7.0 [INFO] [stderr] Compiling thiserror v1.0.64 [INFO] [stderr] Compiling anyhow v1.0.89 [INFO] [stderr] Checking tap v1.0.1 [INFO] [stderr] Checking funty v2.0.0 [INFO] [stderr] Checking wyz v0.5.1 [INFO] [stderr] Checking bitvec v1.0.1 [INFO] [stderr] Compiling quote v1.0.37 [INFO] [stderr] Compiling syn v2.0.79 [INFO] [stderr] Compiling thiserror-impl v1.0.64 [INFO] [stderr] Checking type-exercise-in-rust-mine v0.1.0 (/opt/rustwide/workdir) [INFO] [stdout] warning: unused import: `crate::TypeMismatch` [INFO] [stdout] --> src/array.rs:6:5 [INFO] [stdout] | [INFO] [stdout] 6 | use crate::TypeMismatch; [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_imports)]` (part of `#[warn(unused)]`) on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: hiding a lifetime that's elided elsewhere is confusing [INFO] [stdout] --> src/array.rs:42:13 [INFO] [stdout] | [INFO] [stdout] 42 | fn iter(&self) -> ArrayIterator; [INFO] [stdout] | ^^^^^ ^^^^^^^^^^^^^^^^^^^ the same lifetime is hidden here [INFO] [stdout] | | [INFO] [stdout] | the lifetime is elided here [INFO] [stdout] | [INFO] [stdout] = help: the same lifetime is referred to in inconsistent ways, making the signature confusing [INFO] [stdout] = note: `#[warn(mismatched_lifetime_syntaxes)]` on by default [INFO] [stdout] help: use `'_` for type paths [INFO] [stdout] | [INFO] [stdout] 42 | fn iter(&self) -> ArrayIterator<'_, Self>; [INFO] [stdout] | +++ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: hiding a lifetime that's elided elsewhere is confusing [INFO] [stdout] --> src/array/primitive_array.rs:89:13 [INFO] [stdout] | [INFO] [stdout] 89 | fn iter(&self) -> ArrayIterator { [INFO] [stdout] | ^^^^^ ^^^^^^^^^^^^^^^^^^^ the same lifetime is hidden here [INFO] [stdout] | | [INFO] [stdout] | the lifetime is elided here [INFO] [stdout] | [INFO] [stdout] = help: the same lifetime is referred to in inconsistent ways, making the signature confusing [INFO] [stdout] help: use `'_` for type paths [INFO] [stdout] | [INFO] [stdout] 89 | fn iter(&self) -> ArrayIterator<'_, Self> { [INFO] [stdout] | +++ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: hiding a lifetime that's elided elsewhere is confusing [INFO] [stdout] --> src/array/string_array.rs:44:13 [INFO] [stdout] | [INFO] [stdout] 44 | fn iter(&self) -> ArrayIterator { [INFO] [stdout] | ^^^^^ ^^^^^^^^^^^^^^^^^^^ the same lifetime is hidden here [INFO] [stdout] | | [INFO] [stdout] | the lifetime is elided here [INFO] [stdout] | [INFO] [stdout] = help: the same lifetime is referred to in inconsistent ways, making the signature confusing [INFO] [stdout] help: use `'_` for type paths [INFO] [stdout] | [INFO] [stdout] 44 | fn iter(&self) -> ArrayIterator<'_, Self> { [INFO] [stdout] | +++ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: hiding a lifetime that's elided elsewhere is confusing [INFO] [stdout] --> src/array.rs:42:13 [INFO] [stdout] | [INFO] [stdout] 42 | fn iter(&self) -> ArrayIterator; [INFO] [stdout] | ^^^^^ ^^^^^^^^^^^^^^^^^^^ the same lifetime is hidden here [INFO] [stdout] | | [INFO] [stdout] | the lifetime is elided here [INFO] [stdout] | [INFO] [stdout] = help: the same lifetime is referred to in inconsistent ways, making the signature confusing [INFO] [stdout] = note: `#[warn(mismatched_lifetime_syntaxes)]` on by default [INFO] [stdout] help: use `'_` for type paths [INFO] [stdout] | [INFO] [stdout] 42 | fn iter(&self) -> ArrayIterator<'_, Self>; [INFO] [stdout] | +++ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: hiding a lifetime that's elided elsewhere is confusing [INFO] [stdout] --> src/array/primitive_array.rs:89:13 [INFO] [stdout] | [INFO] [stdout] 89 | fn iter(&self) -> ArrayIterator { [INFO] [stdout] | ^^^^^ ^^^^^^^^^^^^^^^^^^^ the same lifetime is hidden here [INFO] [stdout] | | [INFO] [stdout] | the lifetime is elided here [INFO] [stdout] | [INFO] [stdout] = help: the same lifetime is referred to in inconsistent ways, making the signature confusing [INFO] [stdout] help: use `'_` for type paths [INFO] [stdout] | [INFO] [stdout] 89 | fn iter(&self) -> ArrayIterator<'_, Self> { [INFO] [stdout] | +++ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: hiding a lifetime that's elided elsewhere is confusing [INFO] [stdout] --> src/array/string_array.rs:44:13 [INFO] [stdout] | [INFO] [stdout] 44 | fn iter(&self) -> ArrayIterator { [INFO] [stdout] | ^^^^^ ^^^^^^^^^^^^^^^^^^^ the same lifetime is hidden here [INFO] [stdout] | | [INFO] [stdout] | the lifetime is elided here [INFO] [stdout] | [INFO] [stdout] = help: the same lifetime is referred to in inconsistent ways, making the signature confusing [INFO] [stdout] help: use `'_` for type paths [INFO] [stdout] | [INFO] [stdout] 44 | fn iter(&self) -> ArrayIterator<'_, Self> { [INFO] [stdout] | +++ [INFO] [stdout] [INFO] [stdout] [INFO] [stderr] Finished `dev` profile [unoptimized + debuginfo] target(s) in 10.82s [INFO] running `Command { std: "docker" "inspect" "5e4fba17c281bc797a208b594d11650385d922468f38838e185eba1c1e4f7b4d", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "5e4fba17c281bc797a208b594d11650385d922468f38838e185eba1c1e4f7b4d", kill_on_drop: false }` [INFO] [stdout] 5e4fba17c281bc797a208b594d11650385d922468f38838e185eba1c1e4f7b4d