[INFO] cloning repository https://github.com/fahrenkrug/rust_learn_book_chapter10 [INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/fahrenkrug/rust_learn_book_chapter10" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Ffahrenkrug%2Frust_learn_book_chapter10", kill_on_drop: false }` [INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Ffahrenkrug%2Frust_learn_book_chapter10'... [INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }` [INFO] [stdout] cc13fee7f25ce20d17d66c51965bf8daed82baeb [INFO] testing fahrenkrug/rust_learn_book_chapter10 against try#8262275854dc0e5381c9d42d56257d94932c5a87 for pr-90799 [INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Ffahrenkrug%2Frust_learn_book_chapter10" "/workspace/builds/worker-55/source", kill_on_drop: false }` [INFO] [stderr] Cloning into '/workspace/builds/worker-55/source'... [INFO] [stderr] done. [INFO] validating manifest of git repo https://github.com/fahrenkrug/rust_learn_book_chapter10 on toolchain 8262275854dc0e5381c9d42d56257d94932c5a87 [INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+8262275854dc0e5381c9d42d56257d94932c5a87" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }` [INFO] started tweaking git repo https://github.com/fahrenkrug/rust_learn_book_chapter10 [INFO] finished tweaking git repo https://github.com/fahrenkrug/rust_learn_book_chapter10 [INFO] tweaked toml for git repo https://github.com/fahrenkrug/rust_learn_book_chapter10 written to /workspace/builds/worker-55/source/Cargo.toml [INFO] crate git repo https://github.com/fahrenkrug/rust_learn_book_chapter10 already has a lockfile, it will not be regenerated [INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+8262275854dc0e5381c9d42d56257d94932c5a87" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }` [INFO] [stderr] Blocking waiting for file lock on package cache [INFO] [stderr] Blocking waiting for file lock on package cache [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-55/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-55/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:e8397a04204aaf8b9f284182a6f9e27a3c2e67044d0943b4415b160bfc957681" "/opt/rustwide/cargo-home/bin/cargo" "+8262275854dc0e5381c9d42d56257d94932c5a87" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }` [INFO] [stdout] cc33f45e94eea6053835d1ae5e10ee040fce3140d45ee24d36323306e0e0cfed [INFO] running `Command { std: "docker" "start" "-a" "cc33f45e94eea6053835d1ae5e10ee040fce3140d45ee24d36323306e0e0cfed", kill_on_drop: false }` [INFO] running `Command { std: "docker" "inspect" "cc33f45e94eea6053835d1ae5e10ee040fce3140d45ee24d36323306e0e0cfed", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "cc33f45e94eea6053835d1ae5e10ee040fce3140d45ee24d36323306e0e0cfed", kill_on_drop: false }` [INFO] [stdout] cc33f45e94eea6053835d1ae5e10ee040fce3140d45ee24d36323306e0e0cfed [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-55/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-55/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:e8397a04204aaf8b9f284182a6f9e27a3c2e67044d0943b4415b160bfc957681" "/opt/rustwide/cargo-home/bin/cargo" "+8262275854dc0e5381c9d42d56257d94932c5a87" "build" "--frozen" "--message-format=json", kill_on_drop: false }` [INFO] [stdout] 9e5c9397508572a7186dd41792bae8ac7a513d61571a20d5a30216d12c7f3096 [INFO] running `Command { std: "docker" "start" "-a" "9e5c9397508572a7186dd41792bae8ac7a513d61571a20d5a30216d12c7f3096", kill_on_drop: false }` [INFO] [stderr] Blocking waiting for file lock on package cache [INFO] [stderr] Compiling chapter_10_generics_traits_lifetimes v0.1.0 (/opt/rustwide/workdir) [INFO] [stdout] warning: unused variable: `y` [INFO] [stdout] --> src/lifetime.rs:65:29 [INFO] [stdout] | [INFO] [stdout] 65 | fn longest2<'a>(x: &'a str, y: &str) -> &'a str { [INFO] [stdout] | ^ help: if this is intentional, prefix it with an underscore: `_y` [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_variables)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: field is never read: `part` [INFO] [stdout] --> src/lifetime.rs:78:5 [INFO] [stdout] | [INFO] [stdout] 78 | part: &'a str [INFO] [stdout] | ^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(dead_code)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: associated function is never used: `level` [INFO] [stdout] --> src/lifetime.rs:82:8 [INFO] [stdout] | [INFO] [stdout] 82 | fn level(&self) -> i32 { [INFO] [stdout] | ^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: associated function is never used: `announce_and_return_part` [INFO] [stdout] --> src/lifetime.rs:87:8 [INFO] [stdout] | [INFO] [stdout] 87 | fn announce_and_return_part(&self, announcement: &str) -> &str { [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: field is never read: `content` [INFO] [stdout] --> src/main.rs:114:9 [INFO] [stdout] | [INFO] [stdout] 114 | content: String, [INFO] [stdout] | ^^^^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: field is never read: `reply` [INFO] [stdout] --> src/main.rs:134:9 [INFO] [stdout] | [INFO] [stdout] 134 | reply: bool, [INFO] [stdout] | ^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: field is never read: `retweet` [INFO] [stdout] --> src/main.rs:135:9 [INFO] [stdout] | [INFO] [stdout] 135 | retweet: bool, [INFO] [stdout] | ^^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: 7 warnings emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stderr] Finished dev [unoptimized + debuginfo] target(s) in 5.52s [INFO] running `Command { std: "docker" "inspect" "9e5c9397508572a7186dd41792bae8ac7a513d61571a20d5a30216d12c7f3096", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "9e5c9397508572a7186dd41792bae8ac7a513d61571a20d5a30216d12c7f3096", kill_on_drop: false }` [INFO] [stdout] 9e5c9397508572a7186dd41792bae8ac7a513d61571a20d5a30216d12c7f3096 [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-55/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-55/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:e8397a04204aaf8b9f284182a6f9e27a3c2e67044d0943b4415b160bfc957681" "/opt/rustwide/cargo-home/bin/cargo" "+8262275854dc0e5381c9d42d56257d94932c5a87" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }` [INFO] [stdout] ae092b00878dbb4237065a0509a61d1fc877ecdc84e94a6b7d04fe0497e0f37d [INFO] running `Command { std: "docker" "start" "-a" "ae092b00878dbb4237065a0509a61d1fc877ecdc84e94a6b7d04fe0497e0f37d", kill_on_drop: false }` [INFO] [stderr] Compiling chapter_10_generics_traits_lifetimes v0.1.0 (/opt/rustwide/workdir) [INFO] [stdout] warning: unused variable: `y` [INFO] [stdout] --> src/lifetime.rs:65:29 [INFO] [stdout] | [INFO] [stdout] 65 | fn longest2<'a>(x: &'a str, y: &str) -> &'a str { [INFO] [stdout] | ^ help: if this is intentional, prefix it with an underscore: `_y` [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_variables)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: field is never read: `part` [INFO] [stdout] --> src/lifetime.rs:78:5 [INFO] [stdout] | [INFO] [stdout] 78 | part: &'a str [INFO] [stdout] | ^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(dead_code)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: associated function is never used: `level` [INFO] [stdout] --> src/lifetime.rs:82:8 [INFO] [stdout] | [INFO] [stdout] 82 | fn level(&self) -> i32 { [INFO] [stdout] | ^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: associated function is never used: `announce_and_return_part` [INFO] [stdout] --> src/lifetime.rs:87:8 [INFO] [stdout] | [INFO] [stdout] 87 | fn announce_and_return_part(&self, announcement: &str) -> &str { [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: field is never read: `content` [INFO] [stdout] --> src/main.rs:114:9 [INFO] [stdout] | [INFO] [stdout] 114 | content: String, [INFO] [stdout] | ^^^^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: field is never read: `reply` [INFO] [stdout] --> src/main.rs:134:9 [INFO] [stdout] | [INFO] [stdout] 134 | reply: bool, [INFO] [stdout] | ^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: field is never read: `retweet` [INFO] [stdout] --> src/main.rs:135:9 [INFO] [stdout] | [INFO] [stdout] 135 | retweet: bool, [INFO] [stdout] | ^^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: 7 warnings emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stderr] Finished test [unoptimized + debuginfo] target(s) in 0.58s [INFO] running `Command { std: "docker" "inspect" "ae092b00878dbb4237065a0509a61d1fc877ecdc84e94a6b7d04fe0497e0f37d", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "ae092b00878dbb4237065a0509a61d1fc877ecdc84e94a6b7d04fe0497e0f37d", kill_on_drop: false }` [INFO] [stdout] ae092b00878dbb4237065a0509a61d1fc877ecdc84e94a6b7d04fe0497e0f37d [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-55/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-55/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:e8397a04204aaf8b9f284182a6f9e27a3c2e67044d0943b4415b160bfc957681" "/opt/rustwide/cargo-home/bin/cargo" "+8262275854dc0e5381c9d42d56257d94932c5a87" "test" "--frozen", kill_on_drop: false }` [INFO] [stdout] 2e7c02cf1aa5ba2406c544297ca82bce5abd78981988cd4a0b5dad333e1e054c [INFO] running `Command { std: "docker" "start" "-a" "2e7c02cf1aa5ba2406c544297ca82bce5abd78981988cd4a0b5dad333e1e054c", kill_on_drop: false }` [INFO] [stdout] [INFO] [stderr] warning: unused variable: `y` [INFO] [stdout] running 0 tests [INFO] [stderr] --> src/lifetime.rs:65:29 [INFO] [stdout] [INFO] [stderr] | [INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s [INFO] [stderr] 65 | fn longest2<'a>(x: &'a str, y: &str) -> &'a str { [INFO] [stdout] [INFO] [stderr] | ^ help: if this is intentional, prefix it with an underscore: `_y` [INFO] [stderr] | [INFO] [stderr] = note: `#[warn(unused_variables)]` on by default [INFO] [stderr] [INFO] [stderr] warning: field is never read: `part` [INFO] [stderr] --> src/lifetime.rs:78:5 [INFO] [stderr] | [INFO] [stderr] 78 | part: &'a str [INFO] [stderr] | ^^^^^^^^^^^^^ [INFO] [stderr] | [INFO] [stderr] = note: `#[warn(dead_code)]` on by default [INFO] [stderr] [INFO] [stderr] warning: associated function is never used: `level` [INFO] [stderr] --> src/lifetime.rs:82:8 [INFO] [stderr] | [INFO] [stderr] 82 | fn level(&self) -> i32 { [INFO] [stderr] | ^^^^^ [INFO] [stderr] [INFO] [stderr] warning: associated function is never used: `announce_and_return_part` [INFO] [stderr] --> src/lifetime.rs:87:8 [INFO] [stderr] | [INFO] [stderr] 87 | fn announce_and_return_part(&self, announcement: &str) -> &str { [INFO] [stderr] | ^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stderr] [INFO] [stderr] warning: field is never read: `content` [INFO] [stderr] --> src/main.rs:114:9 [INFO] [stderr] | [INFO] [stderr] 114 | content: String, [INFO] [stderr] | ^^^^^^^^^^^^^^^ [INFO] [stderr] [INFO] [stderr] warning: field is never read: `reply` [INFO] [stderr] --> src/main.rs:134:9 [INFO] [stderr] | [INFO] [stderr] 134 | reply: bool, [INFO] [stderr] | ^^^^^^^^^^^ [INFO] [stderr] [INFO] [stderr] warning: field is never read: `retweet` [INFO] [stderr] --> src/main.rs:135:9 [INFO] [stderr] | [INFO] [stderr] 135 | retweet: bool, [INFO] [stderr] | ^^^^^^^^^^^^^ [INFO] [stderr] [INFO] [stderr] warning: `chapter_10_generics_traits_lifetimes` (bin "chapter_10_generics_traits_lifetimes" test) generated 7 warnings [INFO] [stderr] Finished test [unoptimized + debuginfo] target(s) in 0.05s [INFO] [stderr] Running unittests (/opt/rustwide/target/debug/deps/chapter_10_generics_traits_lifetimes-4fd50df432d8d487) [INFO] running `Command { std: "docker" "inspect" "2e7c02cf1aa5ba2406c544297ca82bce5abd78981988cd4a0b5dad333e1e054c", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "2e7c02cf1aa5ba2406c544297ca82bce5abd78981988cd4a0b5dad333e1e054c", kill_on_drop: false }` [INFO] [stdout] 2e7c02cf1aa5ba2406c544297ca82bce5abd78981988cd4a0b5dad333e1e054c