[INFO] updating cached repository https://github.com/yagince/programming-rust [INFO] running `"git" "-c" "credential.helper=" "-c" "credential.helper=/big/crater/work/cargo-home/bin/git-credential-null" "-c" "remote.origin.fetch=refs/heads/*:refs/heads/*" "fetch" "origin" "--force" "--prune"` [INFO] running `"git" "rev-parse" "HEAD"` [INFO] [stdout] 2fb11ea3e31e1d7584b541293cb56108d4b4ac0f [INFO] testing yagince/programming-rust against 1.38.0 for beta-1.39-1 [INFO] running `"git" "clone" "work/cache/git-repos/https%3A%2F%2Fgithub.com%2Fyagince%2Fprogramming-rust" "work/builds/worker-2/source"` [INFO] [stderr] Cloning into 'work/builds/worker-2/source'... [INFO] [stderr] done. [INFO] validating manifest of git repo https://github.com/yagince/programming-rust on toolchain 1.38.0 [INFO] running `"/big/crater/work/cargo-home/bin/cargo" "+1.38.0" "read-manifest" "--manifest-path" "Cargo.toml"` [INFO] started tweaking git repo https://github.com/yagince/programming-rust [INFO] finished tweaking git repo https://github.com/yagince/programming-rust [INFO] tweaked toml for git repo https://github.com/yagince/programming-rust written to work/builds/worker-2/source/Cargo.toml [INFO] crate git repo https://github.com/yagince/programming-rust already has a lockfile, it will not be regenerated [INFO] running `"/big/crater/work/cargo-home/bin/cargo" "+1.38.0" "fetch" "--locked" "--manifest-path" "Cargo.toml"` [INFO] running `"docker" "create" "-v" "/big/crater/work/builds/worker-2/target:/opt/rustwide/target:rw,Z" "-v" "/big/crater/work/builds/worker-2/source:/opt/rustwide/workdir:ro,Z" "-v" "/big/crater/work/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/big/crater/work/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "MAP_USER_ID=1000" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=warn" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--network" "none" "rustops/crates-build-env" "/opt/rustwide/cargo-home/bin/cargo" "+1.38.0" "build" "--frozen"` [INFO] [stdout] 51fa3a40c037ec3210c7d18d727252a16ecd618a06eaeef0825b29cd7d493cd7 [INFO] running `"docker" "start" "-a" "51fa3a40c037ec3210c7d18d727252a16ecd618a06eaeef0825b29cd7d493cd7"` [INFO] [stderr] Compiling samples v0.1.0 (/opt/rustwide/workdir) [INFO] [stderr] warning: unused variable: `a_2` [INFO] [stderr] --> src/bin/4_3_copy.rs:6:9 [INFO] [stderr] | [INFO] [stderr] 6 | let a_2 = a; [INFO] [stderr] | ^^^ help: consider prefixing with an underscore: `_a_2` [INFO] [stderr] | [INFO] [stderr] = note: `#[warn(unused_variables)]` on by default [INFO] [stderr] [INFO] [stderr] warning: unused import: `std::io::Result` [INFO] [stderr] --> src/bin/6_4_1_if_let.rs:2:5 [INFO] [stderr] | [INFO] [stderr] 2 | use std::io::Result; [INFO] [stderr] | ^^^^^^^^^^^^^^^ [INFO] [stderr] | [INFO] [stderr] = note: `#[warn(unused_imports)]` on by default [INFO] [stderr] [INFO] [stderr] warning: unused variable: `t` [INFO] [stderr] --> src/bin/4_4_rc_arc.rs:9:9 [INFO] [stderr] | [INFO] [stderr] 9 | let t = s.clone(); // cloneすると参照カウントがインクリメントされるが実際はコピーされない [INFO] [stderr] | ^ help: consider prefixing with an underscore: `_t` [INFO] [stderr] | [INFO] [stderr] = note: `#[warn(unused_variables)]` on by default [INFO] [stderr] [INFO] [stderr] warning: unused variable: `u` [INFO] [stderr] --> src/bin/4_4_rc_arc.rs:10:9 [INFO] [stderr] | [INFO] [stderr] 10 | let u = s.clone(); [INFO] [stderr] | ^ help: consider prefixing with an underscore: `_u` [INFO] [stderr] [INFO] [stderr] warning: variable does not need to be mutable [INFO] [stderr] --> src/bin/4_4_rc_arc.rs:7:9 [INFO] [stderr] | [INFO] [stderr] 7 | let mut s = Rc::new("hoge".to_string()); [INFO] [stderr] | ----^ [INFO] [stderr] | | [INFO] [stderr] | help: remove this `mut` [INFO] [stderr] | [INFO] [stderr] = note: `#[warn(unused_mut)]` on by default [INFO] [stderr] [INFO] [stderr] warning: field is never used: `y` [INFO] [stderr] --> src/bin/5_2_6_lifetime_parameter.rs:3:5 [INFO] [stderr] | [INFO] [stderr] 3 | y: &'b i32, [INFO] [stderr] | ^^^^^^^^^^ [INFO] [stderr] | [INFO] [stderr] = note: `#[warn(dead_code)]` on by default [INFO] [stderr] [INFO] [stderr] warning: unused variable: `aside` [INFO] [stderr] --> src/bin/5_3_share_refenrence.rs:11:9 [INFO] [stderr] | [INFO] [stderr] 11 | let aside = v; [INFO] [stderr] | ^^^^^ help: consider prefixing with an underscore: `_aside` [INFO] [stderr] | [INFO] [stderr] = note: `#[warn(unused_variables)]` on by default [INFO] [stderr] [INFO] [stderr] warning: unused variable: `r1` [INFO] [stderr] --> src/bin/5_3_share_refenrence.rs:28:9 [INFO] [stderr] | [INFO] [stderr] 28 | let r1 = &mut r.1; // 可変参照から可変参照の再借用は出来る [INFO] [stderr] | ^^ help: consider prefixing with an underscore: `_r1` [INFO] [stderr] [INFO] [stderr] Finished dev [unoptimized + debuginfo] target(s) in 4.97s [INFO] running `"docker" "inspect" "51fa3a40c037ec3210c7d18d727252a16ecd618a06eaeef0825b29cd7d493cd7"` [INFO] running `"docker" "rm" "-f" "51fa3a40c037ec3210c7d18d727252a16ecd618a06eaeef0825b29cd7d493cd7"` [INFO] [stdout] 51fa3a40c037ec3210c7d18d727252a16ecd618a06eaeef0825b29cd7d493cd7 [INFO] running `"docker" "create" "-v" "/big/crater/work/builds/worker-2/target:/opt/rustwide/target:rw,Z" "-v" "/big/crater/work/builds/worker-2/source:/opt/rustwide/workdir:ro,Z" "-v" "/big/crater/work/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/big/crater/work/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "MAP_USER_ID=1000" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=warn" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--network" "none" "rustops/crates-build-env" "/opt/rustwide/cargo-home/bin/cargo" "+1.38.0" "test" "--frozen" "--no-run"` [INFO] [stdout] d8e06bffcf2badaacbe3511bfcb8db1a513b70ddf4411121a50a9008a6ea3640 [INFO] running `"docker" "start" "-a" "d8e06bffcf2badaacbe3511bfcb8db1a513b70ddf4411121a50a9008a6ea3640"` [INFO] [stderr] Compiling samples v0.1.0 (/opt/rustwide/workdir) [INFO] [stderr] warning: unused import: `std::io::Result` [INFO] [stderr] --> src/bin/6_4_1_if_let.rs:2:5 [INFO] [stderr] | [INFO] [stderr] 2 | use std::io::Result; [INFO] [stderr] | ^^^^^^^^^^^^^^^ [INFO] [stderr] | [INFO] [stderr] = note: `#[warn(unused_imports)]` on by default [INFO] [stderr] [INFO] [stderr] warning: unused variable: `a_2` [INFO] [stderr] --> src/bin/4_3_copy.rs:6:9 [INFO] [stderr] | [INFO] [stderr] 6 | let a_2 = a; [INFO] [stderr] | ^^^ help: consider prefixing with an underscore: `_a_2` [INFO] [stderr] | [INFO] [stderr] = note: `#[warn(unused_variables)]` on by default [INFO] [stderr] [INFO] [stderr] warning: field is never used: `y` [INFO] [stderr] --> src/bin/5_2_6_lifetime_parameter.rs:3:5 [INFO] [stderr] | [INFO] [stderr] 3 | y: &'b i32, [INFO] [stderr] | ^^^^^^^^^^ [INFO] [stderr] | [INFO] [stderr] = note: `#[warn(dead_code)]` on by default [INFO] [stderr] [INFO] [stderr] warning: unused variable: `aside` [INFO] [stderr] --> src/bin/5_3_share_refenrence.rs:11:9 [INFO] [stderr] | [INFO] [stderr] 11 | let aside = v; [INFO] [stderr] | ^^^^^ help: consider prefixing with an underscore: `_aside` [INFO] [stderr] | [INFO] [stderr] = note: `#[warn(unused_variables)]` on by default [INFO] [stderr] [INFO] [stderr] warning: unused variable: `r1` [INFO] [stderr] --> src/bin/5_3_share_refenrence.rs:28:9 [INFO] [stderr] | [INFO] [stderr] 28 | let r1 = &mut r.1; // 可変参照から可変参照の再借用は出来る [INFO] [stderr] | ^^ help: consider prefixing with an underscore: `_r1` [INFO] [stderr] [INFO] [stderr] warning: unused variable: `t` [INFO] [stderr] --> src/bin/4_4_rc_arc.rs:9:9 [INFO] [stderr] | [INFO] [stderr] 9 | let t = s.clone(); // cloneすると参照カウントがインクリメントされるが実際はコピーされない [INFO] [stderr] | ^ help: consider prefixing with an underscore: `_t` [INFO] [stderr] | [INFO] [stderr] = note: `#[warn(unused_variables)]` on by default [INFO] [stderr] [INFO] [stderr] warning: unused variable: `u` [INFO] [stderr] --> src/bin/4_4_rc_arc.rs:10:9 [INFO] [stderr] | [INFO] [stderr] 10 | let u = s.clone(); [INFO] [stderr] | ^ help: consider prefixing with an underscore: `_u` [INFO] [stderr] [INFO] [stderr] warning: variable does not need to be mutable [INFO] [stderr] --> src/bin/4_4_rc_arc.rs:7:9 [INFO] [stderr] | [INFO] [stderr] 7 | let mut s = Rc::new("hoge".to_string()); [INFO] [stderr] | ----^ [INFO] [stderr] | | [INFO] [stderr] | help: remove this `mut` [INFO] [stderr] | [INFO] [stderr] = note: `#[warn(unused_mut)]` on by default [INFO] [stderr] [INFO] [stderr] Finished dev [unoptimized + debuginfo] target(s) in 5.69s [INFO] running `"docker" "inspect" "d8e06bffcf2badaacbe3511bfcb8db1a513b70ddf4411121a50a9008a6ea3640"` [INFO] running `"docker" "rm" "-f" "d8e06bffcf2badaacbe3511bfcb8db1a513b70ddf4411121a50a9008a6ea3640"` [INFO] [stdout] d8e06bffcf2badaacbe3511bfcb8db1a513b70ddf4411121a50a9008a6ea3640 [INFO] running `"docker" "create" "-v" "/big/crater/work/builds/worker-2/target:/opt/rustwide/target:rw,Z" "-v" "/big/crater/work/builds/worker-2/source:/opt/rustwide/workdir:ro,Z" "-v" "/big/crater/work/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/big/crater/work/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "MAP_USER_ID=1000" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=warn" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--network" "none" "rustops/crates-build-env" "/opt/rustwide/cargo-home/bin/cargo" "+1.38.0" "test" "--frozen"` [INFO] [stdout] 6dfe98ba5836d7c956c6df66e8eb0a31ecf601189807c7b207182cd54b82d3a1 [INFO] running `"docker" "start" "-a" "6dfe98ba5836d7c956c6df66e8eb0a31ecf601189807c7b207182cd54b82d3a1"` [INFO] [stderr] Finished dev [unoptimized + debuginfo] target(s) in 0.03s [INFO] [stderr] Running /opt/rustwide/target/debug/deps/4_3_copy-46c31c2532bd7f53 [INFO] [stderr] Running /opt/rustwide/target/debug/deps/4_4_rc_arc-188a7c2a72f83853 [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 [INFO] [stdout] [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 [INFO] [stdout] [INFO] [stderr] Running /opt/rustwide/target/debug/deps/5_2_2_references_static-a3018c1de1fa3ac4 [INFO] [stdout] [INFO] [stderr] Running /opt/rustwide/target/debug/deps/5_2_4_return_references-5fa2f83c4550f9e3 [INFO] [stdout] running 0 tests [INFO] [stdout] [INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out [INFO] [stdout] [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 [INFO] [stdout] [INFO] [stderr] Running /opt/rustwide/target/debug/deps/5_2_6_lifetime_parameter-5f99a363a5539642 [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 [INFO] [stdout] [INFO] [stderr] Running /opt/rustwide/target/debug/deps/5_2_7_self_lifetime-65415bf8b356f86d [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 [INFO] [stdout] [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 [INFO] [stdout] [INFO] [stderr] Running /opt/rustwide/target/debug/deps/5_3_share_refenrence-de05893fe4ebdce6 [INFO] [stderr] Running /opt/rustwide/target/debug/deps/6_13_cast-9b4b2116dd3b9837 [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 [INFO] [stdout] [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 [INFO] [stdout] [INFO] [stderr] Running /opt/rustwide/target/debug/deps/6_4_1_if_let-990fb76f045d5cd8 [INFO] [stderr] Running /opt/rustwide/target/debug/deps/6_5_loop-81f4d556e3d80a5e [INFO] [stdout] [INFO] [stderr] Running /opt/rustwide/target/debug/deps/6_7_loop-fd35cdc2d2f50a8d [INFO] [stdout] running 0 tests [INFO] [stdout] [INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out [INFO] [stdout] [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 [INFO] [stdout] [INFO] [stderr] Running /opt/rustwide/target/debug/deps/samples-3fe236277a591fba [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 [INFO] [stdout] [INFO] running `"docker" "inspect" "6dfe98ba5836d7c956c6df66e8eb0a31ecf601189807c7b207182cd54b82d3a1"` [INFO] running `"docker" "rm" "-f" "6dfe98ba5836d7c956c6df66e8eb0a31ecf601189807c7b207182cd54b82d3a1"` [INFO] [stdout] 6dfe98ba5836d7c956c6df66e8eb0a31ecf601189807c7b207182cd54b82d3a1