[INFO] cloning repository https://github.com/kazchimo/purely-functional-data-stuructures.rs [INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/kazchimo/purely-functional-data-stuructures.rs" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fkazchimo%2Fpurely-functional-data-stuructures.rs", kill_on_drop: false }` [INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fkazchimo%2Fpurely-functional-data-stuructures.rs'... [INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }` [INFO] [stdout] 7259f58fdcce9dc859d18d9a3f24d71bebea301a [INFO] testing kazchimo/purely-functional-data-stuructures.rs against 1.55.0 for beta-1.56-1 [INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fkazchimo%2Fpurely-functional-data-stuructures.rs" "/workspace/builds/worker-7/source", kill_on_drop: false }` [INFO] [stderr] Cloning into '/workspace/builds/worker-7/source'... [INFO] [stderr] done. [INFO] validating manifest of git repo https://github.com/kazchimo/purely-functional-data-stuructures.rs on toolchain 1.55.0 [INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.55.0" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }` [INFO] started tweaking git repo https://github.com/kazchimo/purely-functional-data-stuructures.rs [INFO] finished tweaking git repo https://github.com/kazchimo/purely-functional-data-stuructures.rs [INFO] tweaked toml for git repo https://github.com/kazchimo/purely-functional-data-stuructures.rs written to /workspace/builds/worker-7/source/Cargo.toml [INFO] crate git repo https://github.com/kazchimo/purely-functional-data-stuructures.rs already has a lockfile, it will not be regenerated [INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.55.0" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }` [INFO] [stderr] Blocking waiting for file lock on package cache [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/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:a89201d6b5b9fd45c15d5952ece0a0129e7e80cb26ec023fd59cf09bc26f1604" "/opt/rustwide/cargo-home/bin/cargo" "+1.55.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }` [INFO] [stdout] 1c6c01f6fc9850bd935fd95eb97b12871410cd9c7ebe92058fa77474a43f895e [INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap. [INFO] running `Command { std: "docker" "start" "-a" "1c6c01f6fc9850bd935fd95eb97b12871410cd9c7ebe92058fa77474a43f895e", kill_on_drop: false }` [INFO] running `Command { std: "docker" "inspect" "1c6c01f6fc9850bd935fd95eb97b12871410cd9c7ebe92058fa77474a43f895e", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "1c6c01f6fc9850bd935fd95eb97b12871410cd9c7ebe92058fa77474a43f895e", kill_on_drop: false }` [INFO] [stdout] 1c6c01f6fc9850bd935fd95eb97b12871410cd9c7ebe92058fa77474a43f895e [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/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:a89201d6b5b9fd45c15d5952ece0a0129e7e80cb26ec023fd59cf09bc26f1604" "/opt/rustwide/cargo-home/bin/cargo" "+1.55.0" "build" "--frozen" "--message-format=json", kill_on_drop: false }` [INFO] [stdout] 9d4733f9681d0588d17921513e5bd15bd1a578b84176a2a12ef9d1a56e6a038d [INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap. [INFO] running `Command { std: "docker" "start" "-a" "9d4733f9681d0588d17921513e5bd15bd1a578b84176a2a12ef9d1a56e6a038d", kill_on_drop: false }` [INFO] [stderr] Compiling purely-functional-data-structures v0.1.0 (/opt/rustwide/workdir) [INFO] [stdout] warning: variant is never constructed: `Nil` [INFO] [stdout] --> src/list.rs:5:5 [INFO] [stdout] | [INFO] [stdout] 5 | Nil, [INFO] [stdout] | ^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(dead_code)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: variant is never constructed: `Cons` [INFO] [stdout] --> src/list.rs:6:5 [INFO] [stdout] | [INFO] [stdout] 6 | Cons(&'a T, Box<&'a List<'a, T>>), [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: associated function is never used: `empty` [INFO] [stdout] --> src/list.rs:10:8 [INFO] [stdout] | [INFO] [stdout] 10 | fn empty() -> List<'static, T> { [INFO] [stdout] | ^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: associated function is never used: `one` [INFO] [stdout] --> src/list.rs:14:8 [INFO] [stdout] | [INFO] [stdout] 14 | fn one(a: &T) -> List { [INFO] [stdout] | ^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: associated function is never used: `cons` [INFO] [stdout] --> src/list.rs:18:8 [INFO] [stdout] | [INFO] [stdout] 18 | fn cons<'a>(x: &'a T, s: &'a List) -> List<'a, T> { [INFO] [stdout] | ^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: associated function is never used: `is_empty` [INFO] [stdout] --> src/list.rs:22:8 [INFO] [stdout] | [INFO] [stdout] 22 | fn is_empty(&self) -> bool { [INFO] [stdout] | ^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: associated function is never used: `head` [INFO] [stdout] --> src/list.rs:29:8 [INFO] [stdout] | [INFO] [stdout] 29 | fn head(&self) -> &T { [INFO] [stdout] | ^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: associated function is never used: `tail` [INFO] [stdout] --> src/list.rs:36:8 [INFO] [stdout] | [INFO] [stdout] 36 | fn tail(&self) -> &List<'_, T> { [INFO] [stdout] | ^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: 8 warnings emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stderr] Finished dev [unoptimized + debuginfo] target(s) in 0.43s [INFO] running `Command { std: "docker" "inspect" "9d4733f9681d0588d17921513e5bd15bd1a578b84176a2a12ef9d1a56e6a038d", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "9d4733f9681d0588d17921513e5bd15bd1a578b84176a2a12ef9d1a56e6a038d", kill_on_drop: false }` [INFO] [stdout] 9d4733f9681d0588d17921513e5bd15bd1a578b84176a2a12ef9d1a56e6a038d [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/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:a89201d6b5b9fd45c15d5952ece0a0129e7e80cb26ec023fd59cf09bc26f1604" "/opt/rustwide/cargo-home/bin/cargo" "+1.55.0" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }` [INFO] [stdout] 51b5b4f0dfa175190e6ef9fc81c74ddb29557cf15d55f6b4db0e9dd19d26d39c [INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap. [INFO] running `Command { std: "docker" "start" "-a" "51b5b4f0dfa175190e6ef9fc81c74ddb29557cf15d55f6b4db0e9dd19d26d39c", kill_on_drop: false }` [INFO] [stdout] warning: variant is never constructed: `Nil` [INFO] [stdout] --> src/list.rs:5:5 [INFO] [stdout] | [INFO] [stdout] 5 | Nil, [INFO] [stdout] | ^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(dead_code)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: variant is never constructed: `Cons` [INFO] [stdout] --> src/list.rs:6:5 [INFO] [stdout] | [INFO] [stdout] 6 | Cons(&'a T, Box<&'a List<'a, T>>), [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: associated function is never used: `empty` [INFO] [stdout] --> src/list.rs:10:8 [INFO] [stdout] | [INFO] [stdout] 10 | fn empty() -> List<'static, T> { [INFO] [stdout] | ^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: associated function is never used: `one` [INFO] [stdout] --> src/list.rs:14:8 [INFO] [stdout] | [INFO] [stdout] 14 | fn one(a: &T) -> List { [INFO] [stdout] | ^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: associated function is never used: `cons` [INFO] [stdout] --> src/list.rs:18:8 [INFO] [stdout] | [INFO] [stdout] 18 | fn cons<'a>(x: &'a T, s: &'a List) -> List<'a, T> { [INFO] [stdout] | ^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: associated function is never used: `is_empty` [INFO] [stdout] --> src/list.rs:22:8 [INFO] [stdout] | [INFO] [stdout] 22 | fn is_empty(&self) -> bool { [INFO] [stdout] | ^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: associated function is never used: `head` [INFO] [stdout] --> src/list.rs:29:8 [INFO] [stdout] | [INFO] [stdout] 29 | fn head(&self) -> &T { [INFO] [stdout] | ^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: associated function is never used: `tail` [INFO] [stdout] --> src/list.rs:36:8 [INFO] [stdout] | [INFO] [stdout] 36 | fn tail(&self) -> &List<'_, T> { [INFO] [stdout] | ^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: 8 warnings emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stderr] Compiling purely-functional-data-structures v0.1.0 (/opt/rustwide/workdir) [INFO] [stderr] Finished test [unoptimized + debuginfo] target(s) in 1.24s [INFO] running `Command { std: "docker" "inspect" "51b5b4f0dfa175190e6ef9fc81c74ddb29557cf15d55f6b4db0e9dd19d26d39c", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "51b5b4f0dfa175190e6ef9fc81c74ddb29557cf15d55f6b4db0e9dd19d26d39c", kill_on_drop: false }` [INFO] [stdout] 51b5b4f0dfa175190e6ef9fc81c74ddb29557cf15d55f6b4db0e9dd19d26d39c [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/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:a89201d6b5b9fd45c15d5952ece0a0129e7e80cb26ec023fd59cf09bc26f1604" "/opt/rustwide/cargo-home/bin/cargo" "+1.55.0" "test" "--frozen", kill_on_drop: false }` [INFO] [stdout] 5112548a955dc8d34b1dfe8812340e147d5cc95710062ddcaa5572571204ad1d [INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap. [INFO] running `Command { std: "docker" "start" "-a" "5112548a955dc8d34b1dfe8812340e147d5cc95710062ddcaa5572571204ad1d", kill_on_drop: false }` [INFO] [stdout] [INFO] [stderr] warning: variant is never constructed: `Nil` [INFO] [stdout] running 6 tests [INFO] [stderr] --> src/list.rs:5:5 [INFO] [stdout] test list::tests::cons ... ok [INFO] [stderr] | [INFO] [stdout] test list::tests::head ... ok [INFO] [stderr] 5 | Nil, [INFO] [stdout] test list::tests::is_empty ... ok [INFO] [stderr] | ^^^ [INFO] [stdout] test list::tests::tail ... ok [INFO] [stderr] | [INFO] [stderr] = note: `#[warn(dead_code)]` on by default [INFO] [stderr] [INFO] [stderr] warning: variant is never constructed: `Cons` [INFO] [stderr] --> src/list.rs:6:5 [INFO] [stderr] | [INFO] [stderr] 6 | Cons(&'a T, Box<&'a List<'a, T>>), [INFO] [stderr] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stderr] [INFO] [stderr] warning: associated function is never used: `empty` [INFO] [stderr] --> src/list.rs:10:8 [INFO] [stderr] | [INFO] [stderr] 10 | fn empty() -> List<'static, T> { [INFO] [stderr] | ^^^^^ [INFO] [stderr] [INFO] [stderr] warning: associated function is never used: `one` [INFO] [stderr] --> src/list.rs:14:8 [INFO] [stderr] | [INFO] [stderr] 14 | fn one(a: &T) -> List { [INFO] [stderr] | ^^^ [INFO] [stderr] [INFO] [stderr] warning: associated function is never used: `cons` [INFO] [stderr] --> src/list.rs:18:8 [INFO] [stderr] | [INFO] [stderr] 18 | fn cons<'a>(x: &'a T, s: &'a List) -> List<'a, T> { [INFO] [stderr] | ^^^^ [INFO] [stderr] [INFO] [stderr] warning: associated function is never used: `is_empty` [INFO] [stderr] --> src/list.rs:22:8 [INFO] [stderr] | [INFO] [stderr] 22 | fn is_empty(&self) -> bool { [INFO] [stderr] | ^^^^^^^^ [INFO] [stderr] [INFO] [stderr] warning: associated function is never used: `head` [INFO] [stderr] --> src/list.rs:29:8 [INFO] [stderr] | [INFO] [stderr] 29 | fn head(&self) -> &T { [INFO] [stderr] | ^^^^ [INFO] [stderr] [INFO] [stderr] warning: associated function is never used: `tail` [INFO] [stderr] --> src/list.rs:36:8 [INFO] [stderr] | [INFO] [stderr] 36 | fn tail(&self) -> &List<'_, T> { [INFO] [stderr] | ^^^^ [INFO] [stderr] [INFO] [stderr] warning: `purely-functional-data-structures` (lib) generated 8 warnings [INFO] [stderr] Finished test [unoptimized + debuginfo] target(s) in 0.01s [INFO] [stderr] Running unittests (/opt/rustwide/target/debug/deps/purely_functional_data_structures-fd19186d4d328d09) [INFO] [stdout] test list::tests::fail_head - should panic ... ok [INFO] [stderr] Doc-tests purely-functional-data-structures [INFO] [stdout] test list::tests::fail_tail - should panic ... ok [INFO] [stdout] [INFO] [stdout] test result: ok. 6 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.05s [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] running `Command { std: "docker" "inspect" "5112548a955dc8d34b1dfe8812340e147d5cc95710062ddcaa5572571204ad1d", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "5112548a955dc8d34b1dfe8812340e147d5cc95710062ddcaa5572571204ad1d", kill_on_drop: false }` [INFO] [stdout] 5112548a955dc8d34b1dfe8812340e147d5cc95710062ddcaa5572571204ad1d