[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 master#62efba8a050c64249dab942951bb28f710208bc8 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-64/source", kill_on_drop: false }` [INFO] [stderr] Cloning into '/workspace/builds/worker-64/source'... [INFO] [stderr] done. [INFO] validating manifest of git repo https://github.com/fahrenkrug/rust_learn_book_chapter10 on toolchain 62efba8a050c64249dab942951bb28f710208bc8 [INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+62efba8a050c64249dab942951bb28f710208bc8" "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-64/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" "+62efba8a050c64249dab942951bb28f710208bc8" "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-64/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-64/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" "+62efba8a050c64249dab942951bb28f710208bc8" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }` [INFO] [stdout] 73deaf28ec6f4b093b974391a959411d6361120a24acaec2298ea89fd4265064 [INFO] running `Command { std: "docker" "start" "-a" "73deaf28ec6f4b093b974391a959411d6361120a24acaec2298ea89fd4265064", kill_on_drop: false }` [INFO] running `Command { std: "docker" "inspect" "73deaf28ec6f4b093b974391a959411d6361120a24acaec2298ea89fd4265064", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "73deaf28ec6f4b093b974391a959411d6361120a24acaec2298ea89fd4265064", kill_on_drop: false }` [INFO] [stdout] 73deaf28ec6f4b093b974391a959411d6361120a24acaec2298ea89fd4265064 [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-64/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-64/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" "+62efba8a050c64249dab942951bb28f710208bc8" "build" "--frozen" "--message-format=json", kill_on_drop: false }` [INFO] [stdout] 283aa9a2fe8831ba62c9733c4fba1e42e36e547657297cfc3b2e3666f318da39 [INFO] running `Command { std: "docker" "start" "-a" "283aa9a2fe8831ba62c9733c4fba1e42e36e547657297cfc3b2e3666f318da39", 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 4.68s [INFO] running `Command { std: "docker" "inspect" "283aa9a2fe8831ba62c9733c4fba1e42e36e547657297cfc3b2e3666f318da39", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "283aa9a2fe8831ba62c9733c4fba1e42e36e547657297cfc3b2e3666f318da39", kill_on_drop: false }` [INFO] [stdout] 283aa9a2fe8831ba62c9733c4fba1e42e36e547657297cfc3b2e3666f318da39 [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-64/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-64/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" "+62efba8a050c64249dab942951bb28f710208bc8" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }` [INFO] [stdout] e5b81b4dab42806c0da69a73ee1e3d7c8657ef448d6457fffd1693ee87f2a9b5 [INFO] running `Command { std: "docker" "start" "-a" "e5b81b4dab42806c0da69a73ee1e3d7c8657ef448d6457fffd1693ee87f2a9b5", 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 test [unoptimized + debuginfo] target(s) in 0.49s [INFO] running `Command { std: "docker" "inspect" "e5b81b4dab42806c0da69a73ee1e3d7c8657ef448d6457fffd1693ee87f2a9b5", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "e5b81b4dab42806c0da69a73ee1e3d7c8657ef448d6457fffd1693ee87f2a9b5", kill_on_drop: false }` [INFO] [stdout] e5b81b4dab42806c0da69a73ee1e3d7c8657ef448d6457fffd1693ee87f2a9b5 [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-64/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-64/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" "+62efba8a050c64249dab942951bb28f710208bc8" "test" "--frozen", kill_on_drop: false }` [INFO] [stdout] ad8ca9f1e5ad91a44b2e90c91416e8a3e87b1261e0ef94e2f56aac9403e5a41a [INFO] running `Command { std: "docker" "start" "-a" "ad8ca9f1e5ad91a44b2e90c91416e8a3e87b1261e0ef94e2f56aac9403e5a41a", kill_on_drop: false }` [INFO] [stderr] warning: unused variable: `y` [INFO] [stderr] --> src/lifetime.rs:65:29 [INFO] [stderr] | [INFO] [stderr] 65 | fn longest2<'a>(x: &'a str, y: &str) -> &'a str { [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 0.01s [INFO] [stderr] Running unittests (/opt/rustwide/target/debug/deps/chapter_10_generics_traits_lifetimes-4fd50df432d8d487) [INFO] [stdout] [INFO] [stdout] running 0 tests [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] running `Command { std: "docker" "inspect" "ad8ca9f1e5ad91a44b2e90c91416e8a3e87b1261e0ef94e2f56aac9403e5a41a", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "ad8ca9f1e5ad91a44b2e90c91416e8a3e87b1261e0ef94e2f56aac9403e5a41a", kill_on_drop: false }` [INFO] [stdout] ad8ca9f1e5ad91a44b2e90c91416e8a3e87b1261e0ef94e2f56aac9403e5a41a