[INFO] updating cached repository https://github.com/stephenjayakar/linked_list
[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] b3caa5b2c9c0955f8fa2bc2ebb541acf6056bb5f
[INFO] testing stephenjayakar/linked_list against try#03a1ea71b075ab964b5278bc6e74cd6c52c36ee0 for pr-74409
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fstephenjayakar%2Flinked_list" "/workspace/builds/worker-5/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-5/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/stephenjayakar/linked_list on toolchain 03a1ea71b075ab964b5278bc6e74cd6c52c36ee0
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+03a1ea71b075ab964b5278bc6e74cd6c52c36ee0" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/stephenjayakar/linked_list
[INFO] finished tweaking git repo https://github.com/stephenjayakar/linked_list
[INFO] tweaked toml for git repo https://github.com/stephenjayakar/linked_list written to /workspace/builds/worker-5/source/Cargo.toml
[INFO] crate git repo https://github.com/stephenjayakar/linked_list already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+03a1ea71b075ab964b5278bc6e74cd6c52c36ee0" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "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_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:d9fbb4e2287ab3795bdefaf705efb7541a8875c13bce71e067d6b01dc5ed759b" "/opt/rustwide/cargo-home/bin/cargo" "+03a1ea71b075ab964b5278bc6e74cd6c52c36ee0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 6ec29f5d99b1d187485ad460452ccba0e376f196bab54e1b5560542b237fb25d
[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" "6ec29f5d99b1d187485ad460452ccba0e376f196bab54e1b5560542b237fb25d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "6ec29f5d99b1d187485ad460452ccba0e376f196bab54e1b5560542b237fb25d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "6ec29f5d99b1d187485ad460452ccba0e376f196bab54e1b5560542b237fb25d", kill_on_drop: false }`
[INFO] [stdout] 6ec29f5d99b1d187485ad460452ccba0e376f196bab54e1b5560542b237fb25d
[INFO] running `Command { std: "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@sha256:d9fbb4e2287ab3795bdefaf705efb7541a8875c13bce71e067d6b01dc5ed759b" "/opt/rustwide/cargo-home/bin/cargo" "+03a1ea71b075ab964b5278bc6e74cd6c52c36ee0" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 30a7034ce1518e9a85b3d38db4cb52138b07694a4f98b0d7c914e4ee3bb8dded
[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" "30a7034ce1518e9a85b3d38db4cb52138b07694a4f98b0d7c914e4ee3bb8dded", kill_on_drop: false }`
[INFO] [stderr]    Compiling stephen_ll v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `test::Bencher`
[INFO] [stdout]    --> src/linked_list.rs:167:5
[INFO] [stdout]     |
[INFO] [stdout] 167 | use test::Bencher;
[INFO] [stdout]     |     ^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::process::Termination`
[INFO] [stdout]    --> src/linked_list.rs:168:5
[INFO] [stdout]     |
[INFO] [stdout] 168 | use std::process::Termination;
[INFO] [stdout]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant is never used: `N`
[INFO] [stdout]    --> src/linked_list.rs:169:1
[INFO] [stdout]     |
[INFO] [stdout] 169 | const N: i32 = 10000;
[INFO] [stdout]     | ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 3 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.43s
[INFO] running `Command { std: "docker" "inspect" "30a7034ce1518e9a85b3d38db4cb52138b07694a4f98b0d7c914e4ee3bb8dded", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "30a7034ce1518e9a85b3d38db4cb52138b07694a4f98b0d7c914e4ee3bb8dded", kill_on_drop: false }`
[INFO] [stdout] 30a7034ce1518e9a85b3d38db4cb52138b07694a4f98b0d7c914e4ee3bb8dded
[INFO] running `Command { std: "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@sha256:d9fbb4e2287ab3795bdefaf705efb7541a8875c13bce71e067d6b01dc5ed759b" "/opt/rustwide/cargo-home/bin/cargo" "+03a1ea71b075ab964b5278bc6e74cd6c52c36ee0" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 35f627a8b86fad109959237466729d9d8bbbbb97fd267f1a075fcc19efa447e9
[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" "35f627a8b86fad109959237466729d9d8bbbbb97fd267f1a075fcc19efa447e9", kill_on_drop: false }`
[INFO] [stdout] warning: unused import: `test::Bencher`
[INFO] [stdout]    --> src/linked_list.rs:167:5
[INFO] [stdout]     |
[INFO] [stdout] 167 | use test::Bencher;
[INFO] [stdout]     |     ^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]    Compiling stephen_ll v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `std::process::Termination`
[INFO] [stdout]    --> src/linked_list.rs:168:5
[INFO] [stdout]     |
[INFO] [stdout] 168 | use std::process::Termination;
[INFO] [stdout]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant is never used: `N`
[INFO] [stdout]    --> src/linked_list.rs:169:1
[INFO] [stdout]     |
[INFO] [stdout] 169 | const N: i32 = 10000;
[INFO] [stdout]     | ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 3 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.99s
[INFO] running `Command { std: "docker" "inspect" "35f627a8b86fad109959237466729d9d8bbbbb97fd267f1a075fcc19efa447e9", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "35f627a8b86fad109959237466729d9d8bbbbb97fd267f1a075fcc19efa447e9", kill_on_drop: false }`
[INFO] [stdout] 35f627a8b86fad109959237466729d9d8bbbbb97fd267f1a075fcc19efa447e9
[INFO] running `Command { std: "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@sha256:d9fbb4e2287ab3795bdefaf705efb7541a8875c13bce71e067d6b01dc5ed759b" "/opt/rustwide/cargo-home/bin/cargo" "+03a1ea71b075ab964b5278bc6e74cd6c52c36ee0" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] eddbe64b83f44619eb4e4eabe48ae8df94503f1b729ac65ad6372bec1687c10b
[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" "eddbe64b83f44619eb4e4eabe48ae8df94503f1b729ac65ad6372bec1687c10b", kill_on_drop: false }`
[INFO] [stderr] warning: unused import: `test::Bencher`
[INFO] [stderr]    --> src/linked_list.rs:167:5
[INFO] [stderr]     |
[INFO] [stderr] 167 | use test::Bencher;
[INFO] [stderr]     |     ^^^^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(unused_imports)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `std::process::Termination`
[INFO] [stderr]    --> src/linked_list.rs:168:5
[INFO] [stderr]     |
[INFO] [stderr] 168 | use std::process::Termination;
[INFO] [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: constant is never used: `N`
[INFO] [stderr]    --> src/linked_list.rs:169:1
[INFO] [stderr]     |
[INFO] [stderr] 169 | const N: i32 = 10000;
[INFO] [stderr]     | ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: 3 warnings emitted
[INFO] [stderr] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.02s
[INFO] [stdout] 
[INFO] [stderr]      Running /opt/rustwide/target/debug/deps/stephen_ll-10231d837737ba62
[INFO] [stdout] running 5 tests
[INFO] [stdout] test linked_list::tests::sanity_pop ... ok
[INFO] [stdout] test linked_list::tests::sanity_contains ... ok
[INFO] [stdout] test linked_list::tests::print_test ... ok
[INFO] [stdout] test linked_list::contains ... ok
[INFO] [stdout] test linked_list::tests::head_none_invariant ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 5 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
[INFO] [stdout] 
[INFO] [stderr]    Doc-tests stephen_ll
[INFO] [stdout] 
[INFO] [stdout] running 3 tests
[INFO] [stdout] test src/linked_list.rs - linked_list::LinkedList<T>::push_front (line 30) ... ok
[INFO] [stdout] test src/linked_list.rs - linked_list::LinkedList<T>::pop_front (line 47) ... ok
[INFO] [stdout] test src/linked_list.rs - linked_list::LinkedList<T> (line 97) ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 3 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "eddbe64b83f44619eb4e4eabe48ae8df94503f1b729ac65ad6372bec1687c10b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "eddbe64b83f44619eb4e4eabe48ae8df94503f1b729ac65ad6372bec1687c10b", kill_on_drop: false }`
[INFO] [stdout] eddbe64b83f44619eb4e4eabe48ae8df94503f1b729ac65ad6372bec1687c10b