[INFO] cloning repository https://github.com/hinaria/slice [INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/hinaria/slice" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fhinaria%2Fslice", kill_on_drop: false }` [INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fhinaria%2Fslice'... [INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }` [INFO] [stdout] 3e4505e60fd70d5efb116a746087b60f720ef677 [INFO] testing hinaria/slice against master#99e3aef02079e9c10583638520cd0c134dc3a01d for pr-85530 [INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fhinaria%2Fslice" "/workspace/builds/worker-6/source", kill_on_drop: false }` [INFO] [stderr] Cloning into '/workspace/builds/worker-6/source'... [INFO] [stderr] done. [INFO] validating manifest of git repo https://github.com/hinaria/slice on toolchain 99e3aef02079e9c10583638520cd0c134dc3a01d [INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+99e3aef02079e9c10583638520cd0c134dc3a01d" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }` [INFO] started tweaking git repo https://github.com/hinaria/slice [INFO] finished tweaking git repo https://github.com/hinaria/slice [INFO] tweaked toml for git repo https://github.com/hinaria/slice written to /workspace/builds/worker-6/source/Cargo.toml [INFO] crate git repo https://github.com/hinaria/slice already has a lockfile, it will not be regenerated [INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+99e3aef02079e9c10583638520cd0c134dc3a01d" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }` [INFO] running `Command { std: "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" "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" "+99e3aef02079e9c10583638520cd0c134dc3a01d" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }` [INFO] [stdout] 92ce4f152ab5cff89012ab8375d1af7ca69f18f1e3b9e5165380f73a858d1811 [INFO] running `Command { std: "docker" "start" "-a" "92ce4f152ab5cff89012ab8375d1af7ca69f18f1e3b9e5165380f73a858d1811", kill_on_drop: false }` [INFO] running `Command { std: "docker" "inspect" "92ce4f152ab5cff89012ab8375d1af7ca69f18f1e3b9e5165380f73a858d1811", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "92ce4f152ab5cff89012ab8375d1af7ca69f18f1e3b9e5165380f73a858d1811", kill_on_drop: false }` [INFO] [stdout] 92ce4f152ab5cff89012ab8375d1af7ca69f18f1e3b9e5165380f73a858d1811 [INFO] running `Command { std: "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" "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" "+99e3aef02079e9c10583638520cd0c134dc3a01d" "build" "--frozen" "--message-format=json", kill_on_drop: false }` [INFO] [stdout] 9628bfff4f572e3be4f43595fbbd3e0f56753c31b03705aac81dc88029894d9e [INFO] running `Command { std: "docker" "start" "-a" "9628bfff4f572e3be4f43595fbbd3e0f56753c31b03705aac81dc88029894d9e", kill_on_drop: false }` [INFO] [stderr] Compiling slice v0.0.4 (/opt/rustwide/workdir) [INFO] [stderr] Finished dev [unoptimized + debuginfo] target(s) in 0.33s [INFO] running `Command { std: "docker" "inspect" "9628bfff4f572e3be4f43595fbbd3e0f56753c31b03705aac81dc88029894d9e", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "9628bfff4f572e3be4f43595fbbd3e0f56753c31b03705aac81dc88029894d9e", kill_on_drop: false }` [INFO] [stdout] 9628bfff4f572e3be4f43595fbbd3e0f56753c31b03705aac81dc88029894d9e [INFO] running `Command { std: "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" "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" "+99e3aef02079e9c10583638520cd0c134dc3a01d" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }` [INFO] [stdout] 924c4d20e965fe6bdc8c780e579b561372ec9472e03c2f1c60341590913be450 [INFO] running `Command { std: "docker" "start" "-a" "924c4d20e965fe6bdc8c780e579b561372ec9472e03c2f1c60341590913be450", kill_on_drop: false }` [INFO] [stderr] Compiling slice v0.0.4 (/opt/rustwide/workdir) [INFO] [stderr] Finished test [unoptimized + debuginfo] target(s) in 0.62s [INFO] running `Command { std: "docker" "inspect" "924c4d20e965fe6bdc8c780e579b561372ec9472e03c2f1c60341590913be450", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "924c4d20e965fe6bdc8c780e579b561372ec9472e03c2f1c60341590913be450", kill_on_drop: false }` [INFO] [stdout] 924c4d20e965fe6bdc8c780e579b561372ec9472e03c2f1c60341590913be450 [INFO] running `Command { std: "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" "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" "+99e3aef02079e9c10583638520cd0c134dc3a01d" "test" "--frozen", kill_on_drop: false }` [INFO] [stdout] 28ae6c0280a7c3bc91579091cec93c1f031d826445445f3dd40514b8416475f3 [INFO] running `Command { std: "docker" "start" "-a" "28ae6c0280a7c3bc91579091cec93c1f031d826445445f3dd40514b8416475f3", kill_on_drop: false }` [INFO] [stderr] Finished test [unoptimized + debuginfo] target(s) in 0.03s [INFO] [stdout] [INFO] [stderr] Running unittests (/opt/rustwide/target/debug/deps/slice-a6d6e1cca5c13af9) [INFO] [stdout] running 0 tests [INFO] [stderr] Doc-tests slice [INFO] [stdout] [INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] running 2 tests [INFO] [stdout] test src/lib.rs - IoSlice (line 56) ... FAILED [INFO] [stderr] error: test failed, to rerun pass '--doc' [INFO] [stdout] test src/lib.rs - (line 10) ... FAILED [INFO] [stdout] [INFO] [stdout] failures: [INFO] [stdout] [INFO] [stdout] ---- src/lib.rs - IoSlice (line 56) stdout ---- [INFO] [stdout] error[E0277]: the `?` operator can only be used in a function that returns `Result` or `Option` (or another type that implements `FromResidual`) [INFO] [stdout] --> src/lib.rs:60:48 [INFO] [stdout] | [INFO] [stdout] 3 | fn main() { #[allow(non_snake_case)] fn _doctest_main_src_lib_rs_56_0() { [INFO] [stdout] | ______________________________________- [INFO] [stdout] 4 | | use { std::fs::File, slice::IoSlice }; [INFO] [stdout] 5 | | [INFO] [stdout] 6 | | [INFO] [stdout] 7 | | let source = File::open("/home/annie/data.png")?; [INFO] [stdout] | | ^ cannot use the `?` operator in a function that returns `()` [INFO] [stdout] ... | [INFO] [stdout] 27 | | // [INFO] [stdout] 28 | | } _doctest_main_src_lib_rs_56_0() } [INFO] [stdout] | |_- this function should return `Result` or `Option` to accept `?` [INFO] [stdout] | [INFO] [stdout] = help: the trait `FromResidual>` is not implemented for `()` [INFO] [stdout] = note: required by `from_residual` [INFO] [stdout] [INFO] [stdout] error: aborting due to previous error [INFO] [stdout] [INFO] [stdout] For more information about this error, try `rustc --explain E0277`. [INFO] [stdout] Couldn't compile the test. [INFO] [stdout] ---- src/lib.rs - (line 10) stdout ---- [INFO] [stdout] error[E0277]: the `?` operator can only be used in a function that returns `Result` or `Option` (or another type that implements `FromResidual`) [INFO] [stdout] --> src/lib.rs:14:48 [INFO] [stdout] | [INFO] [stdout] 3 | fn main() { #[allow(non_snake_case)] fn _doctest_main_src_lib_rs_10_0() { [INFO] [stdout] | ______________________________________- [INFO] [stdout] 4 | | use { std::fs::File, slice::IoSlice }; [INFO] [stdout] 5 | | [INFO] [stdout] 6 | | [INFO] [stdout] 7 | | let source = File::open("/home/annie/data.png")?; [INFO] [stdout] | | ^ cannot use the `?` operator in a function that returns `()` [INFO] [stdout] ... | [INFO] [stdout] 27 | | // [INFO] [stdout] 28 | | } _doctest_main_src_lib_rs_10_0() } [INFO] [stdout] | |_- this function should return `Result` or `Option` to accept `?` [INFO] [stdout] | [INFO] [stdout] = help: the trait `FromResidual>` is not implemented for `()` [INFO] [stdout] = note: required by `from_residual` [INFO] [stdout] [INFO] [stdout] error: aborting due to previous error [INFO] [stdout] [INFO] [stdout] For more information about this error, try `rustc --explain E0277`. [INFO] [stdout] Couldn't compile the test. [INFO] [stdout] [INFO] [stdout] failures: [INFO] [stdout] src/lib.rs - (line 10) [INFO] [stdout] src/lib.rs - IoSlice (line 56) [INFO] [stdout] [INFO] [stdout] test result: FAILED. 0 passed; 2 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.20s [INFO] [stdout] [INFO] running `Command { std: "docker" "inspect" "28ae6c0280a7c3bc91579091cec93c1f031d826445445f3dd40514b8416475f3", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "28ae6c0280a7c3bc91579091cec93c1f031d826445445f3dd40514b8416475f3", kill_on_drop: false }` [INFO] [stdout] 28ae6c0280a7c3bc91579091cec93c1f031d826445445f3dd40514b8416475f3