[INFO] cloning repository https://github.com/pietrocarbo/rust_first_steps [INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/pietrocarbo/rust_first_steps" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fpietrocarbo%2Frust_first_steps", kill_on_drop: false }` [INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fpietrocarbo%2Frust_first_steps'... [INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }` [INFO] [stdout] ab44a82cc79245986e93b857b57d532f63df8a11 [INFO] testing pietrocarbo/rust_first_steps 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%2Fpietrocarbo%2Frust_first_steps" "/workspace/builds/worker-23/source", kill_on_drop: false }` [INFO] [stderr] Cloning into '/workspace/builds/worker-23/source'... [INFO] [stderr] done. [INFO] validating manifest of git repo https://github.com/pietrocarbo/rust_first_steps 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/pietrocarbo/rust_first_steps [INFO] finished tweaking git repo https://github.com/pietrocarbo/rust_first_steps [INFO] tweaked toml for git repo https://github.com/pietrocarbo/rust_first_steps written to /workspace/builds/worker-23/source/Cargo.toml [INFO] crate git repo https://github.com/pietrocarbo/rust_first_steps 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-23/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-23/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] d79d969ca6be0cd0af01e5e4721857f3727570d25a86302196060c8b50200a69 [INFO] running `Command { std: "docker" "start" "-a" "d79d969ca6be0cd0af01e5e4721857f3727570d25a86302196060c8b50200a69", kill_on_drop: false }` [INFO] running `Command { std: "docker" "inspect" "d79d969ca6be0cd0af01e5e4721857f3727570d25a86302196060c8b50200a69", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "d79d969ca6be0cd0af01e5e4721857f3727570d25a86302196060c8b50200a69", kill_on_drop: false }` [INFO] [stdout] d79d969ca6be0cd0af01e5e4721857f3727570d25a86302196060c8b50200a69 [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-23/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-23/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] 9807206cbf8fc14ab156d199e49d9c67340bbb0f04aa7e9a682a45e02bd89f8f [INFO] running `Command { std: "docker" "start" "-a" "9807206cbf8fc14ab156d199e49d9c67340bbb0f04aa7e9a682a45e02bd89f8f", kill_on_drop: false }` [INFO] [stderr] Compiling libc v0.2.41 [INFO] [stderr] Compiling rand v0.4.2 [INFO] [stderr] Compiling rand v0.3.22 [INFO] [stderr] Compiling presentation v0.1.0 (/opt/rustwide/workdir) [INFO] [stdout] warning: function is never used: `file_parse_verbose` [INFO] [stdout] --> src/bin/3_error_IO.rs:12:4 [INFO] [stdout] | [INFO] [stdout] 12 | fn file_parse_verbose>(file_path: P) -> Result { [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(dead_code)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: crate `3_error_IO` should have a snake case name [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(non_snake_case)]` on by default [INFO] [stdout] = help: convert the identifier to snake case: `3_error_io` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: 2 warnings emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stderr] Finished dev [unoptimized + debuginfo] target(s) in 4.08s [INFO] running `Command { std: "docker" "inspect" "9807206cbf8fc14ab156d199e49d9c67340bbb0f04aa7e9a682a45e02bd89f8f", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "9807206cbf8fc14ab156d199e49d9c67340bbb0f04aa7e9a682a45e02bd89f8f", kill_on_drop: false }` [INFO] [stdout] 9807206cbf8fc14ab156d199e49d9c67340bbb0f04aa7e9a682a45e02bd89f8f [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-23/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-23/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] c205870ac0693701044d64a064e476b5f08b04d1742b603e0fdd42f4d3526453 [INFO] running `Command { std: "docker" "start" "-a" "c205870ac0693701044d64a064e476b5f08b04d1742b603e0fdd42f4d3526453", kill_on_drop: false }` [INFO] [stderr] Compiling presentation v0.1.0 (/opt/rustwide/workdir) [INFO] [stdout] warning: function is never used: `file_parse_verbose` [INFO] [stdout] --> src/bin/3_error_IO.rs:12:4 [INFO] [stdout] | [INFO] [stdout] 12 | fn file_parse_verbose>(file_path: P) -> Result { [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(dead_code)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: crate `3_error_IO` should have a snake case name [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(non_snake_case)]` on by default [INFO] [stdout] = help: convert the identifier to snake case: `3_error_io` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: 2 warnings emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stderr] Finished test [unoptimized + debuginfo] target(s) in 0.39s [INFO] [stderr] Executable unittests src/bin/1_linked_list.rs (/opt/rustwide/target/debug/deps/1_linked_list-5f018e8e5225e525) [INFO] [stderr] Executable unittests src/bin/2_generics.rs (/opt/rustwide/target/debug/deps/2_generics-23b30052083fbf0b) [INFO] [stderr] Executable unittests src/bin/3_error_IO.rs (/opt/rustwide/target/debug/deps/3_error_IO-53a57c36197d80af) [INFO] [stderr] Executable unittests src/bin/4_traits.rs (/opt/rustwide/target/debug/deps/4_traits-4e5beeeee899efbb) [INFO] [stderr] Executable unittests src/bin/5_closures_cacher.rs (/opt/rustwide/target/debug/deps/5_closures_cacher-6937427fd7fcb505) [INFO] running `Command { std: "docker" "inspect" "c205870ac0693701044d64a064e476b5f08b04d1742b603e0fdd42f4d3526453", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "c205870ac0693701044d64a064e476b5f08b04d1742b603e0fdd42f4d3526453", kill_on_drop: false }` [INFO] [stdout] c205870ac0693701044d64a064e476b5f08b04d1742b603e0fdd42f4d3526453 [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-23/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-23/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] c7f188e5c9d7ded4e72badf2836e3af158be376e628c8422e373b7f765931f76 [INFO] running `Command { std: "docker" "start" "-a" "c7f188e5c9d7ded4e72badf2836e3af158be376e628c8422e373b7f765931f76", kill_on_drop: false }` [INFO] [stderr] warning: function is never used: `file_parse_verbose` [INFO] [stderr] --> src/bin/3_error_IO.rs:12:4 [INFO] [stderr] | [INFO] [stderr] 12 | fn file_parse_verbose>(file_path: P) -> Result { [INFO] [stderr] | ^^^^^^^^^^^^^^^^^^ [INFO] [stderr] | [INFO] [stderr] = note: `#[warn(dead_code)]` on by default [INFO] [stderr] [INFO] [stderr] warning: crate `3_error_IO` should have a snake case name [INFO] [stderr] | [INFO] [stderr] = note: `#[warn(non_snake_case)]` on by default [INFO] [stderr] = help: convert the identifier to snake case: `3_error_io` [INFO] [stderr] [INFO] [stderr] warning: `presentation` (bin "3_error_IO" test) generated 2 warnings [INFO] [stderr] Finished test [unoptimized + debuginfo] target(s) in 0.01s [INFO] [stderr] Running unittests src/bin/1_linked_list.rs (/opt/rustwide/target/debug/deps/1_linked_list-5f018e8e5225e525) [INFO] [stderr] Running unittests src/bin/2_generics.rs (/opt/rustwide/target/debug/deps/2_generics-23b30052083fbf0b) [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] [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/3_error_IO.rs (/opt/rustwide/target/debug/deps/3_error_IO-53a57c36197d80af) [INFO] [stdout] [INFO] [stderr] Running unittests src/bin/4_traits.rs (/opt/rustwide/target/debug/deps/4_traits-4e5beeeee899efbb) [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] [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/5_closures_cacher.rs (/opt/rustwide/target/debug/deps/5_closures_cacher-6937427fd7fcb505) [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" "c7f188e5c9d7ded4e72badf2836e3af158be376e628c8422e373b7f765931f76", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "c7f188e5c9d7ded4e72badf2836e3af158be376e628c8422e373b7f765931f76", kill_on_drop: false }` [INFO] [stdout] c7f188e5c9d7ded4e72badf2836e3af158be376e628c8422e373b7f765931f76