[INFO] updating cached repository https://github.com/varzac/rust_collections
[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] db1285199d9300d32cdd25281583753dc1de814d
[INFO] testing varzac/rust_collections against master#28742a1146f10a4f09369baad027a464acb7a766 for pr-71274
[INFO] running `"git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fvarzac%2Frust_collections" "/workspace/builds/worker-5/source"`
[INFO] [stderr] Cloning into '/workspace/builds/worker-5/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/varzac/rust_collections 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/varzac/rust_collections
[INFO] finished tweaking git repo https://github.com/varzac/rust_collections
[INFO] tweaked toml for git repo https://github.com/varzac/rust_collections written to /workspace/builds/worker-5/source/Cargo.toml
[INFO] crate git repo https://github.com/varzac/rust_collections already has a lockfile, it will not be regenerated
[INFO] running `"/workspace/cargo-home/bin/cargo" "+28742a1146f10a4f09369baad027a464acb7a766" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] [stderr] warning: path `/workspace/builds/worker-5/source/src/linked_list.rs` was erroneously implicitly accepted for binary `linked_list`,
[INFO] [stderr] please set bin.path in Cargo.toml
[INFO] running `"docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/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] 0c5f1bf6eae12e0144c06ee7f953bb18de8a2e342bee0a194fff43f0832bfdaa
[INFO] running `"docker" "start" "-a" "0c5f1bf6eae12e0144c06ee7f953bb18de8a2e342bee0a194fff43f0832bfdaa"`
[INFO] [stderr] warning: path `/opt/rustwide/workdir/src/linked_list.rs` was erroneously implicitly accepted for binary `linked_list`,
[INFO] [stderr] please set bin.path in Cargo.toml
[INFO] [stderr]    Compiling linked_list v0.0.1 (/opt/rustwide/workdir)
[INFO] [stderr] warning: method is never used: `delete_val`
[INFO] [stderr]   --> src/linked_list.rs:14:5
[INFO] [stderr]    |
[INFO] [stderr] 14 |     fn delete_val(&self, val: &T) -> Option<Rc<LinkedList<T>>> {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `insert_val`
[INFO] [stderr]   --> src/linked_list.rs:38:5
[INFO] [stderr]    |
[INFO] [stderr] 38 |     fn insert_val(&self, val: T) -> LinkedList<T> {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `length`
[INFO] [stderr]   --> src/linked_list.rs:42:5
[INFO] [stderr]    |
[INFO] [stderr] 42 |     fn length(&self) -> i32 {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `find`
[INFO] [stderr]   --> src/linked_list.rs:66:5
[INFO] [stderr]    |
[INFO] [stderr] 66 |     fn find(&self, val: T) -> Option<i32> {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: 4 warnings emitted
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.87s
[INFO] running `"docker" "inspect" "0c5f1bf6eae12e0144c06ee7f953bb18de8a2e342bee0a194fff43f0832bfdaa"`
[INFO] running `"docker" "rm" "-f" "0c5f1bf6eae12e0144c06ee7f953bb18de8a2e342bee0a194fff43f0832bfdaa"`
[INFO] [stdout] 0c5f1bf6eae12e0144c06ee7f953bb18de8a2e342bee0a194fff43f0832bfdaa
[INFO] running `"docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/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] [stdout] a07259451e37ea21ed0e41f14f33002695b2143cd211f1528fff9d06c60f5cc1
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `"docker" "start" "-a" "a07259451e37ea21ed0e41f14f33002695b2143cd211f1528fff9d06c60f5cc1"`
[INFO] [stderr] warning: path `/opt/rustwide/workdir/src/linked_list.rs` was erroneously implicitly accepted for binary `linked_list`,
[INFO] [stderr] please set bin.path in Cargo.toml
[INFO] [stderr]    Compiling linked_list v0.0.1 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 1.06s
[INFO] running `"docker" "inspect" "a07259451e37ea21ed0e41f14f33002695b2143cd211f1528fff9d06c60f5cc1"`
[INFO] running `"docker" "rm" "-f" "a07259451e37ea21ed0e41f14f33002695b2143cd211f1528fff9d06c60f5cc1"`
[INFO] [stdout] a07259451e37ea21ed0e41f14f33002695b2143cd211f1528fff9d06c60f5cc1
[INFO] running `"docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/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] d62318ebfd316831a286f403f59b7d53db7c9d28c5b715b16dcba3bafffdedcc
[INFO] running `"docker" "start" "-a" "d62318ebfd316831a286f403f59b7d53db7c9d28c5b715b16dcba3bafffdedcc"`
[INFO] [stderr] warning: path `/opt/rustwide/workdir/src/linked_list.rs` was erroneously implicitly accepted for binary `linked_list`,
[INFO] [stderr] please set bin.path in Cargo.toml
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.09s
[INFO] [stderr]      Running /opt/rustwide/target/debug/deps/linked_list-b9844e4ab9d71fff
[INFO] [stdout] 
[INFO] [stdout] running 11 tests
[INFO] [stdout] test test_delete_only_element ... ok
[INFO] [stdout] test test_clone ... ok
[INFO] [stdout] test test_eq ... ok
[INFO] [stdout] test test_delete_not_found ... ok
[INFO] [stdout] test test_find_exists ... ok
[INFO] [stdout] test test_delete_found ... ok
[INFO] [stdout] test test_get_oob ... ok
[INFO] [stdout] test test_insert_val ... ok
[INFO] [stdout] test test_get ... ok
[INFO] [stdout] test test_find_not_exists ... ok
[INFO] [stdout] test test_length ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 11 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
[INFO] [stdout] 
[INFO] running `"docker" "inspect" "d62318ebfd316831a286f403f59b7d53db7c9d28c5b715b16dcba3bafffdedcc"`
[INFO] running `"docker" "rm" "-f" "d62318ebfd316831a286f403f59b7d53db7c9d28c5b715b16dcba3bafffdedcc"`
[INFO] [stdout] d62318ebfd316831a286f403f59b7d53db7c9d28c5b715b16dcba3bafffdedcc