[INFO] updating cached repository https://github.com/pako8128/lists
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "-c" "remote.origin.fetch=refs/heads/*:refs/heads/*" "fetch" "origin" "--force" "--prune", kill_on_drop: false }`
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 15748da8eddd87fa9fd0813755efec432127c554
[INFO] testing pako8128/lists against master#8534be72fc3b9c5f2f2dc4e4ee7b651a008e9a3e for pr-74409
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fpako8128%2Flists" "/workspace/builds/worker-2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-2/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/pako8128/lists on toolchain 8534be72fc3b9c5f2f2dc4e4ee7b651a008e9a3e
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+8534be72fc3b9c5f2f2dc4e4ee7b651a008e9a3e" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/pako8128/lists
[INFO] finished tweaking git repo https://github.com/pako8128/lists
[INFO] tweaked toml for git repo https://github.com/pako8128/lists written to /workspace/builds/worker-2/source/Cargo.toml
[INFO] crate git repo https://github.com/pako8128/lists already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+8534be72fc3b9c5f2f2dc4e4ee7b651a008e9a3e" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/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" "MAP_USER_ID=0" "-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" "--network" "none" "rustops/crates-build-env@sha256:a636fd89d022f18117e1dc8fb37a0a009933cdbbe082814857f0e2024962d47c" "/opt/rustwide/cargo-home/bin/cargo" "+8534be72fc3b9c5f2f2dc4e4ee7b651a008e9a3e" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 1f0531538def604c48d4dab056a3811dc1cfa056ed146462415ce17c9c92b727
[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" "1f0531538def604c48d4dab056a3811dc1cfa056ed146462415ce17c9c92b727", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "1f0531538def604c48d4dab056a3811dc1cfa056ed146462415ce17c9c92b727", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "1f0531538def604c48d4dab056a3811dc1cfa056ed146462415ce17c9c92b727", kill_on_drop: false }`
[INFO] [stdout] 1f0531538def604c48d4dab056a3811dc1cfa056ed146462415ce17c9c92b727
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/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" "MAP_USER_ID=0" "-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" "--network" "none" "rustops/crates-build-env@sha256:a636fd89d022f18117e1dc8fb37a0a009933cdbbe082814857f0e2024962d47c" "/opt/rustwide/cargo-home/bin/cargo" "+8534be72fc3b9c5f2f2dc4e4ee7b651a008e9a3e" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] c3e93cb4d066c673f40fafd44bb75ce3e2aca0e7965da4d61462fbcf300c0ca0
[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" "c3e93cb4d066c673f40fafd44bb75ce3e2aca0e7965da4d61462fbcf300c0ca0", kill_on_drop: false }`
[INFO] [stderr]    Compiling lists v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: associated function is never used: `new`
[INFO] [stdout]   --> src/ok_stack.rs:38:8
[INFO] [stdout]    |
[INFO] [stdout] 38 |     fn new(elem: T, tail: ListEnum<T>) -> Self {
[INFO] [stdout]    |        ^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.57s
[INFO] running `Command { std: "docker" "inspect" "c3e93cb4d066c673f40fafd44bb75ce3e2aca0e7965da4d61462fbcf300c0ca0", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "c3e93cb4d066c673f40fafd44bb75ce3e2aca0e7965da4d61462fbcf300c0ca0", kill_on_drop: false }`
[INFO] [stdout] c3e93cb4d066c673f40fafd44bb75ce3e2aca0e7965da4d61462fbcf300c0ca0
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/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" "MAP_USER_ID=0" "-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" "--network" "none" "rustops/crates-build-env@sha256:a636fd89d022f18117e1dc8fb37a0a009933cdbbe082814857f0e2024962d47c" "/opt/rustwide/cargo-home/bin/cargo" "+8534be72fc3b9c5f2f2dc4e4ee7b651a008e9a3e" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] 4c2bdc19f92d4b51e991e3afa2b9535887769444f0df4629e85752acf730c78c
[INFO] running `Command { std: "docker" "start" "-a" "4c2bdc19f92d4b51e991e3afa2b9535887769444f0df4629e85752acf730c78c", kill_on_drop: false }`
[INFO] [stderr]    Compiling lists v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: associated function is never used: `new`
[INFO] [stdout]   --> src/ok_stack.rs:38:8
[INFO] [stdout]    |
[INFO] [stdout] 38 |     fn new(elem: T, tail: ListEnum<T>) -> Self {
[INFO] [stdout]    |        ^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `new`
[INFO] [stdout]   --> src/ok_stack.rs:38:8
[INFO] [stdout]    |
[INFO] [stdout] 38 |     fn new(elem: T, tail: ListEnum<T>) -> Self {
[INFO] [stdout]    |        ^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 1.76s
[INFO] running `Command { std: "docker" "inspect" "4c2bdc19f92d4b51e991e3afa2b9535887769444f0df4629e85752acf730c78c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "4c2bdc19f92d4b51e991e3afa2b9535887769444f0df4629e85752acf730c78c", kill_on_drop: false }`
[INFO] [stdout] 4c2bdc19f92d4b51e991e3afa2b9535887769444f0df4629e85752acf730c78c
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/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" "MAP_USER_ID=0" "-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" "--network" "none" "rustops/crates-build-env@sha256:a636fd89d022f18117e1dc8fb37a0a009933cdbbe082814857f0e2024962d47c" "/opt/rustwide/cargo-home/bin/cargo" "+8534be72fc3b9c5f2f2dc4e4ee7b651a008e9a3e" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] 36c31541fc8d15de158ab4c66cf7e8e83814f478d6209d42eff486c16861410d
[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" "36c31541fc8d15de158ab4c66cf7e8e83814f478d6209d42eff486c16861410d", kill_on_drop: false }`
[INFO] [stderr] warning: associated function is never used: `new`
[INFO] [stderr]   --> src/ok_stack.rs:38:8
[INFO] [stderr]    |
[INFO] [stderr] 38 |     fn new(elem: T, tail: ListEnum<T>) -> Self {
[INFO] [stderr]    |        ^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: 1 warning emitted
[INFO] [stderr] 
[INFO] [stderr] warning: associated function is never used: `new`
[INFO] [stderr]   --> src/ok_stack.rs:38:8
[INFO] [stderr]    |
[INFO] [stderr] 38 |     fn new(elem: T, tail: ListEnum<T>) -> Self {
[INFO] [stderr]    |        ^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: 1 warning emitted
[INFO] [stderr] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.06s
[INFO] [stdout] 
[INFO] [stderr]      Running /opt/rustwide/target/debug/deps/lists-87a954f0e3aa619a
[INFO] [stdout] running 24 tests
[INFO] [stdout] test bad_stack::tests::integer_list_constructor ... ok
[INFO] [stdout] test bad_stack::tests::integer_list_creation ... ok
[INFO] [stdout] test better_stack::tests::add_to_an_existing_listenum ... ok
[INFO] [stdout] test own_stack::tests::construct_from_vector ... ok
[INFO] [stdout] test own_stack::tests::basics ... ok
[INFO] [stdout] test ok_stack::tests::push_pop_integrity ... ok
[INFO] [stdout] test stack::tests::into_iter ... ok
[INFO] [stdout] test ok_stack::tests::push_onto_a_list ... ok
[INFO] [stdout] test stack::tests::iter ... ok
[INFO] [stdout] test stack::tests::iter_mut ... ok
[INFO] [stdout] test stack::tests::peek ... ok
[INFO] [stdout] test ok_stack::tests::create_a_list ... ok
[INFO] [stdout] test better_stack::tests::nodes_not_eq ... ok
[INFO] [stdout] test own_stack::tests::iterator ... ok
[INFO] [stdout] test own_stack::tests::collect_from_iterator ... ok
[INFO] [stdout] test better_stack::tests::construct_list_from_vec ... ok
[INFO] [stdout] test better_stack::tests::construct_list ... ok
[INFO] [stdout] test better_stack::tests::construct_node ... ok
[INFO] [stdout] test better_stack::tests::nodes_eq ... ok
[INFO] [stdout] test own_stack::tests::mutably_borrowed_iterator ... ok
[INFO] [stdout] test own_stack::tests::owned_iterator ... ok
[INFO] [stdout] test better_stack::tests::construct_listenum_from_vector ... ok
[INFO] [stdout] test persistent_stack::tests::iter ... ok
[INFO] [stdout] test persistent_stack::tests::basics ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 24 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
[INFO] [stdout] 
[INFO] [stderr]    Doc-tests lists
[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 `Command { std: "docker" "inspect" "36c31541fc8d15de158ab4c66cf7e8e83814f478d6209d42eff486c16861410d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "36c31541fc8d15de158ab4c66cf7e8e83814f478d6209d42eff486c16861410d", kill_on_drop: false }`
[INFO] [stdout] 36c31541fc8d15de158ab4c66cf7e8e83814f478d6209d42eff486c16861410d