[INFO] cloning repository https://github.com/jli/rustlearn [INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/jli/rustlearn" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fjli%2Frustlearn", kill_on_drop: false }` [INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fjli%2Frustlearn'... [INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }` [INFO] [stdout] b28594df8df1619fea55d74a80fecf4e41b24d77 [INFO] testing jli/rustlearn against beta-2022-04-10 for beta-1.61-1 [INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fjli%2Frustlearn" "/workspace/builds/worker-11/source", kill_on_drop: false }` [INFO] [stderr] Cloning into '/workspace/builds/worker-11/source'... [INFO] [stderr] done. [INFO] validating manifest of git repo https://github.com/jli/rustlearn on toolchain beta-2022-04-10 [INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2022-04-10" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }` [INFO] started tweaking git repo https://github.com/jli/rustlearn [INFO] finished tweaking git repo https://github.com/jli/rustlearn [INFO] tweaked toml for git repo https://github.com/jli/rustlearn written to /workspace/builds/worker-11/source/Cargo.toml [INFO] crate git repo https://github.com/jli/rustlearn already has a lockfile, it will not be regenerated [INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2022-04-10" "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-11/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-11/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:b0c94ce3c1162fcb8e57cac5b65ec2f72eabb1eebea4fcc35e269e823f681646" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2022-04-10" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }` [INFO] [stdout] 561ddff4bcd717e544fbcfb8d516018ab16067eddf579d738c6e16dd9740dd05 [INFO] running `Command { std: "docker" "start" "-a" "561ddff4bcd717e544fbcfb8d516018ab16067eddf579d738c6e16dd9740dd05", kill_on_drop: false }` [INFO] running `Command { std: "docker" "inspect" "561ddff4bcd717e544fbcfb8d516018ab16067eddf579d738c6e16dd9740dd05", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "561ddff4bcd717e544fbcfb8d516018ab16067eddf579d738c6e16dd9740dd05", kill_on_drop: false }` [INFO] [stdout] 561ddff4bcd717e544fbcfb8d516018ab16067eddf579d738c6e16dd9740dd05 [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-11/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-11/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=warn" "-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:b0c94ce3c1162fcb8e57cac5b65ec2f72eabb1eebea4fcc35e269e823f681646" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2022-04-10" "build" "--frozen" "--message-format=json", kill_on_drop: false }` [INFO] [stdout] 9db60f7a3a340978198ec64d0c9549ecc6f37f4a6bef68a052fe5ea1c13ab13c [INFO] running `Command { std: "docker" "start" "-a" "9db60f7a3a340978198ec64d0c9549ecc6f37f4a6bef68a052fe5ea1c13ab13c", kill_on_drop: false }` [INFO] [stderr] Blocking waiting for file lock on package cache [INFO] [stderr] Compiling libc v0.2.80 [INFO] [stderr] Compiling syn v1.0.48 [INFO] [stderr] Compiling unicode-segmentation v1.7.0 [INFO] [stderr] Compiling anyhow v1.0.34 [INFO] [stderr] Compiling itertools v0.9.0 [INFO] [stderr] Compiling aho-corasick v0.7.14 [INFO] [stderr] Compiling heck v0.3.1 [INFO] [stderr] Compiling regex v1.4.1 [INFO] [stderr] Compiling atty v0.2.14 [INFO] [stderr] Compiling clap v2.33.3 [INFO] [stderr] Compiling env_logger v0.7.1 [INFO] [stderr] Compiling pretty_env_logger v0.4.0 [INFO] [stderr] Compiling proc-macro-error v1.0.4 [INFO] [stderr] Compiling structopt-derive v0.4.13 [INFO] [stderr] Compiling structopt v0.3.20 [INFO] [stderr] Compiling rustlearn v0.1.0 (/opt/rustwide/workdir) [INFO] [stdout] warning: field is never read: `i` [INFO] [stdout] --> src/bin/structs.rs:3:5 [INFO] [stdout] | [INFO] [stdout] 3 | i: i32, [INFO] [stdout] | ^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(dead_code)]` on by default [INFO] [stdout] note: `U` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis [INFO] [stdout] --> src/bin/structs.rs:1:10 [INFO] [stdout] | [INFO] [stdout] 1 | #[derive(Debug)] [INFO] [stdout] | ^^^^^ [INFO] [stdout] = note: this warning originates in the derive macro `Debug` (in Nightly builds, run with -Z macro-backtrace for more info) [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: field is never read: `s` [INFO] [stdout] --> src/bin/structs.rs:4:5 [INFO] [stdout] | [INFO] [stdout] 4 | s: String, [INFO] [stdout] | ^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] note: `U` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis [INFO] [stdout] --> src/bin/structs.rs:1:10 [INFO] [stdout] | [INFO] [stdout] 1 | #[derive(Debug)] [INFO] [stdout] | ^^^^^ [INFO] [stdout] = note: this warning originates in the derive macro `Debug` (in Nightly builds, run with -Z macro-backtrace for more info) [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: 2 warnings emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stderr] Finished dev [unoptimized + debuginfo] target(s) in 17.78s [INFO] running `Command { std: "docker" "inspect" "9db60f7a3a340978198ec64d0c9549ecc6f37f4a6bef68a052fe5ea1c13ab13c", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "9db60f7a3a340978198ec64d0c9549ecc6f37f4a6bef68a052fe5ea1c13ab13c", kill_on_drop: false }` [INFO] [stdout] 9db60f7a3a340978198ec64d0c9549ecc6f37f4a6bef68a052fe5ea1c13ab13c [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-11/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-11/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=warn" "-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:b0c94ce3c1162fcb8e57cac5b65ec2f72eabb1eebea4fcc35e269e823f681646" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2022-04-10" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }` [INFO] [stdout] 282b4877d9565923098a736da28549be016c77e85321d34432ec0b97dbdf9ace [INFO] running `Command { std: "docker" "start" "-a" "282b4877d9565923098a736da28549be016c77e85321d34432ec0b97dbdf9ace", kill_on_drop: false }` [INFO] [stderr] Compiling rustlearn v0.1.0 (/opt/rustwide/workdir) [INFO] [stdout] warning: field is never read: `i` [INFO] [stdout] --> src/bin/structs.rs:3:5 [INFO] [stdout] | [INFO] [stdout] 3 | i: i32, [INFO] [stdout] | ^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(dead_code)]` on by default [INFO] [stdout] note: `U` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis [INFO] [stdout] --> src/bin/structs.rs:1:10 [INFO] [stdout] | [INFO] [stdout] 1 | #[derive(Debug)] [INFO] [stdout] | ^^^^^ [INFO] [stdout] = note: this warning originates in the derive macro `Debug` (in Nightly builds, run with -Z macro-backtrace for more info) [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: field is never read: `s` [INFO] [stdout] --> src/bin/structs.rs:4:5 [INFO] [stdout] | [INFO] [stdout] 4 | s: String, [INFO] [stdout] | ^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] note: `U` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis [INFO] [stdout] --> src/bin/structs.rs:1:10 [INFO] [stdout] | [INFO] [stdout] 1 | #[derive(Debug)] [INFO] [stdout] | ^^^^^ [INFO] [stdout] = note: this warning originates in the derive macro `Debug` (in Nightly builds, run with -Z macro-backtrace for more info) [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: 2 warnings emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stderr] Finished test [unoptimized + debuginfo] target(s) in 1.09s [INFO] [stderr] Executable unittests src/bin/iteration.rs (/opt/rustwide/target/debug/deps/iteration-6ee3fba7bd25c687) [INFO] [stderr] Executable unittests src/bin/misc_lang.rs (/opt/rustwide/target/debug/deps/misc_lang-45f4ff204d314cf4) [INFO] [stderr] Executable unittests src/bin/regex.rs (/opt/rustwide/target/debug/deps/regex-c2e5041abdf65371) [INFO] [stderr] Executable unittests src/bin/results.rs (/opt/rustwide/target/debug/deps/results-69973c632e88bd05) [INFO] [stderr] Executable unittests src/bin/safety.rs (/opt/rustwide/target/debug/deps/safety-e04447b2917412d0) [INFO] [stderr] Executable unittests src/bin/stack_heap_stuff.rs (/opt/rustwide/target/debug/deps/stack_heap_stuff-f03c2aad3831e226) [INFO] [stderr] Executable unittests src/bin/strs.rs (/opt/rustwide/target/debug/deps/strs-21a05b910933bc55) [INFO] [stderr] Executable unittests src/bin/structs.rs (/opt/rustwide/target/debug/deps/structs-167d8bd45c25b584) [INFO] [stderr] Executable unittests src/bin/why_ansible_slow.rs (/opt/rustwide/target/debug/deps/why_ansible_slow-3cd88d2646b2630e) [INFO] running `Command { std: "docker" "inspect" "282b4877d9565923098a736da28549be016c77e85321d34432ec0b97dbdf9ace", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "282b4877d9565923098a736da28549be016c77e85321d34432ec0b97dbdf9ace", kill_on_drop: false }` [INFO] [stdout] 282b4877d9565923098a736da28549be016c77e85321d34432ec0b97dbdf9ace [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-11/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-11/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=warn" "-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:b0c94ce3c1162fcb8e57cac5b65ec2f72eabb1eebea4fcc35e269e823f681646" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2022-04-10" "test" "--frozen", kill_on_drop: false }` [INFO] [stdout] 031df02e029dc85dd1f6a8d60fe27a67323330123c129d83c2a1d53f3dec0257 [INFO] running `Command { std: "docker" "start" "-a" "031df02e029dc85dd1f6a8d60fe27a67323330123c129d83c2a1d53f3dec0257", kill_on_drop: false }` [INFO] [stderr] warning: field is never read: `i` [INFO] [stderr] --> src/bin/structs.rs:3:5 [INFO] [stderr] | [INFO] [stderr] 3 | i: i32, [INFO] [stderr] | ^^^^^^ [INFO] [stderr] | [INFO] [stderr] = note: `#[warn(dead_code)]` on by default [INFO] [stderr] note: `U` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis [INFO] [stderr] --> src/bin/structs.rs:1:10 [INFO] [stderr] | [INFO] [stderr] 1 | #[derive(Debug)] [INFO] [stderr] | ^^^^^ [INFO] [stderr] = note: this warning originates in the derive macro `Debug` (in Nightly builds, run with -Z macro-backtrace for more info) [INFO] [stderr] [INFO] [stderr] warning: field is never read: `s` [INFO] [stderr] --> src/bin/structs.rs:4:5 [INFO] [stderr] | [INFO] [stderr] 4 | s: String, [INFO] [stderr] | ^^^^^^^^^ [INFO] [stderr] | [INFO] [stderr] note: `U` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis [INFO] [stderr] --> src/bin/structs.rs:1:10 [INFO] [stderr] | [INFO] [stderr] 1 | #[derive(Debug)] [INFO] [stderr] | ^^^^^ [INFO] [stderr] = note: this warning originates in the derive macro `Debug` (in Nightly builds, run with -Z macro-backtrace for more info) [INFO] [stderr] [INFO] [stderr] warning: `rustlearn` (bin "structs" test) generated 2 warnings [INFO] [stderr] Finished test [unoptimized + debuginfo] target(s) in 0.03s [INFO] [stderr] Running unittests src/bin/iteration.rs (/opt/rustwide/target/debug/deps/iteration-6ee3fba7bd25c687) [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] [stderr] Running unittests src/bin/misc_lang.rs (/opt/rustwide/target/debug/deps/misc_lang-45f4ff204d314cf4) [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] [stderr] Running unittests src/bin/regex.rs (/opt/rustwide/target/debug/deps/regex-c2e5041abdf65371) [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] [stderr] Running unittests src/bin/results.rs (/opt/rustwide/target/debug/deps/results-69973c632e88bd05) [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] [stderr] Running unittests src/bin/safety.rs (/opt/rustwide/target/debug/deps/safety-e04447b2917412d0) [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] [stderr] Running unittests src/bin/stack_heap_stuff.rs (/opt/rustwide/target/debug/deps/stack_heap_stuff-f03c2aad3831e226) [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] [stderr] Running unittests src/bin/strs.rs (/opt/rustwide/target/debug/deps/strs-21a05b910933bc55) [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] [stderr] Running unittests src/bin/structs.rs (/opt/rustwide/target/debug/deps/structs-167d8bd45c25b584) [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] [stderr] Running unittests src/bin/why_ansible_slow.rs (/opt/rustwide/target/debug/deps/why_ansible_slow-3cd88d2646b2630e) [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" "031df02e029dc85dd1f6a8d60fe27a67323330123c129d83c2a1d53f3dec0257", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "031df02e029dc85dd1f6a8d60fe27a67323330123c129d83c2a1d53f3dec0257", kill_on_drop: false }` [INFO] [stdout] 031df02e029dc85dd1f6a8d60fe27a67323330123c129d83c2a1d53f3dec0257