[INFO] updating cached repository https://github.com/pako8128/lists
[INFO] running `"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"`
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] 15748da8eddd87fa9fd0813755efec432127c554
[INFO] testing pako8128/lists against master#28742a1146f10a4f09369baad027a464acb7a766 for pr-71274
[INFO] running `"git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fpako8128%2Flists" "/workspace/builds/worker-4/source"`
[INFO] [stderr] Cloning into '/workspace/builds/worker-4/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/pako8128/lists on toolchain 28742a1146f10a4f09369baad027a464acb7a766
[INFO] running `"/workspace/cargo-home/bin/cargo" "+28742a1146f10a4f09369baad027a464acb7a766" "read-manifest" "--manifest-path" "Cargo.toml"`
[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-4/source/Cargo.toml
[INFO] crate git repo https://github.com/pako8128/lists already has a lockfile, it will not be regenerated
[INFO] running `"/workspace/cargo-home/bin/cargo" "+28742a1146f10a4f09369baad027a464acb7a766" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/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" "/opt/rustwide/cargo-home/bin/cargo" "+28742a1146f10a4f09369baad027a464acb7a766" "build" "--frozen"`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] b4a6d6bdbe9e517ed3803140c61bbab2562883a52c01ba6e686d09b988d2266b
[INFO] running `"docker" "start" "-a" "b4a6d6bdbe9e517ed3803140c61bbab2562883a52c01ba6e686d09b988d2266b"`
[INFO] [stderr]    Compiling lists v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr] warning: method is never used: `new`
[INFO] [stderr]   --> src/ok_stack.rs:38:5
[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 dev [unoptimized + debuginfo] target(s) in 0.73s
[INFO] running `"docker" "inspect" "b4a6d6bdbe9e517ed3803140c61bbab2562883a52c01ba6e686d09b988d2266b"`
[INFO] running `"docker" "rm" "-f" "b4a6d6bdbe9e517ed3803140c61bbab2562883a52c01ba6e686d09b988d2266b"`
[INFO] [stdout] b4a6d6bdbe9e517ed3803140c61bbab2562883a52c01ba6e686d09b988d2266b
[INFO] running `"docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/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" "/opt/rustwide/cargo-home/bin/cargo" "+28742a1146f10a4f09369baad027a464acb7a766" "test" "--frozen" "--no-run"`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] 349910e69224446b4ac763ea4dd31aab084dd7e1ea2531f1c4f4a0b585cbbb0c
[INFO] running `"docker" "start" "-a" "349910e69224446b4ac763ea4dd31aab084dd7e1ea2531f1c4f4a0b585cbbb0c"`
[INFO] [stderr]    Compiling lists v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr] warning: method is never used: `new`
[INFO] [stderr]   --> src/ok_stack.rs:38:5
[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: method is never used: `new`
[INFO] [stderr]   --> src/ok_stack.rs:38:5
[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 2.09s
[INFO] running `"docker" "inspect" "349910e69224446b4ac763ea4dd31aab084dd7e1ea2531f1c4f4a0b585cbbb0c"`
[INFO] running `"docker" "rm" "-f" "349910e69224446b4ac763ea4dd31aab084dd7e1ea2531f1c4f4a0b585cbbb0c"`
[INFO] [stdout] 349910e69224446b4ac763ea4dd31aab084dd7e1ea2531f1c4f4a0b585cbbb0c
[INFO] running `"docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/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" "/opt/rustwide/cargo-home/bin/cargo" "+28742a1146f10a4f09369baad027a464acb7a766" "test" "--frozen"`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] e28b44d4493c08e43f6aba1a362fcf96d85d5a8f54bde706d31963ec590e2925
[INFO] running `"docker" "start" "-a" "e28b44d4493c08e43f6aba1a362fcf96d85d5a8f54bde706d31963ec590e2925"`
[INFO] [stderr] warning: method is never used: `new`
[INFO] [stderr]   --> src/ok_stack.rs:38:5
[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: method is never used: `new`
[INFO] [stderr]   --> src/ok_stack.rs:38:5
[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 0.09s
[INFO] [stderr]      Running /opt/rustwide/target/debug/deps/lists-f0670bc04dbda774
[INFO] [stdout] 
[INFO] [stdout] running 24 tests
[INFO] [stdout] test bad_stack::tests::integer_list_creation ... ok
[INFO] [stdout] test better_stack::tests::construct_list ... ok
[INFO] [stdout] test ok_stack::tests::push_onto_a_list ... ok
[INFO] [stdout] test ok_stack::tests::create_a_list ... ok
[INFO] [stdout] test better_stack::tests::nodes_not_eq ... ok
[INFO] [stdout] test persistent_stack::tests::basics ... ok
[INFO] [stdout] test better_stack::tests::nodes_eq ... ok
[INFO] [stdout] test persistent_stack::tests::iter ... ok
[INFO] [stdout] test stack::tests::into_iter ... 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 better_stack::tests::construct_node ... ok
[INFO] [stdout] test bad_stack::tests::integer_list_constructor ... ok
[INFO] [stdout] test better_stack::tests::add_to_an_existing_listenum ... ok
[INFO] [stdout] test ok_stack::tests::push_pop_integrity ... ok
[INFO] [stdout] test better_stack::tests::construct_listenum_from_vector ... ok
[INFO] [stdout] test own_stack::tests::mutably_borrowed_iterator ... ok
[INFO] [stdout] test own_stack::tests::owned_iterator ... ok
[INFO] [stderr]    Doc-tests lists
[INFO] [stdout] test own_stack::tests::iterator ... ok
[INFO] [stdout] test own_stack::tests::basics ... ok
[INFO] [stdout] test own_stack::tests::construct_from_vector ... ok
[INFO] [stdout] test own_stack::tests::collect_from_iterator ... ok
[INFO] [stdout] test better_stack::tests::construct_list_from_vec ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 24 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] running `"docker" "inspect" "e28b44d4493c08e43f6aba1a362fcf96d85d5a8f54bde706d31963ec590e2925"`
[INFO] running `"docker" "rm" "-f" "e28b44d4493c08e43f6aba1a362fcf96d85d5a8f54bde706d31963ec590e2925"`
[INFO] [stdout] e28b44d4493c08e43f6aba1a362fcf96d85d5a8f54bde706d31963ec590e2925