[INFO] cloning 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" "clone" "--bare" "https://github.com/stephenjayakar/linked_list" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fstephenjayakar%2Flinked_list", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fstephenjayakar%2Flinked_list'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] b3caa5b2c9c0955f8fa2bc2ebb541acf6056bb5f
[INFO] testing stephenjayakar/linked_list against try#8262275854dc0e5381c9d42d56257d94932c5a87 for pr-90799
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fstephenjayakar%2Flinked_list" "/workspace/builds/worker-6/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-6/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/stephenjayakar/linked_list on toolchain 8262275854dc0e5381c9d42d56257d94932c5a87
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+8262275854dc0e5381c9d42d56257d94932c5a87" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", 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-6/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" "+8262275854dc0e5381c9d42d56257d94932c5a87" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/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@sha256:5736fa189c1c60b01babf4b8b698fe57b6ecc41933a7ff2e0b8d7a221459412b" "/opt/rustwide/cargo-home/bin/cargo" "+8262275854dc0e5381c9d42d56257d94932c5a87" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] d6b3cba500de20329c4cc309cc851771e11cc82fc4cc7d6b5b975d57a838a389
[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" "d6b3cba500de20329c4cc309cc851771e11cc82fc4cc7d6b5b975d57a838a389", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "d6b3cba500de20329c4cc309cc851771e11cc82fc4cc7d6b5b975d57a838a389", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "d6b3cba500de20329c4cc309cc851771e11cc82fc4cc7d6b5b975d57a838a389", kill_on_drop: false }`
[INFO] [stdout] d6b3cba500de20329c4cc309cc851771e11cc82fc4cc7d6b5b975d57a838a389
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/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=forbid" "-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@sha256:5736fa189c1c60b01babf4b8b698fe57b6ecc41933a7ff2e0b8d7a221459412b" "/opt/rustwide/cargo-home/bin/cargo" "+8262275854dc0e5381c9d42d56257d94932c5a87" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] b8e7cda2e0121502df61c65acb0c149dbca44fd04fe02ab9c92861208fa215f5
[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" "b8e7cda2e0121502df61c65acb0c149dbca44fd04fe02ab9c92861208fa215f5", 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 0.31s
[INFO] running `Command { std: "docker" "inspect" "b8e7cda2e0121502df61c65acb0c149dbca44fd04fe02ab9c92861208fa215f5", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "b8e7cda2e0121502df61c65acb0c149dbca44fd04fe02ab9c92861208fa215f5", kill_on_drop: false }`
[INFO] [stdout] b8e7cda2e0121502df61c65acb0c149dbca44fd04fe02ab9c92861208fa215f5
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/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=forbid" "-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@sha256:5736fa189c1c60b01babf4b8b698fe57b6ecc41933a7ff2e0b8d7a221459412b" "/opt/rustwide/cargo-home/bin/cargo" "+8262275854dc0e5381c9d42d56257d94932c5a87" "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] fabb0993654f03261693d29fd9edeade4a06757ec048d5a940caead16f5a856c
[INFO] running `Command { std: "docker" "start" "-a" "fabb0993654f03261693d29fd9edeade4a06757ec048d5a940caead16f5a856c", 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 1.03s
[INFO] running `Command { std: "docker" "inspect" "fabb0993654f03261693d29fd9edeade4a06757ec048d5a940caead16f5a856c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "fabb0993654f03261693d29fd9edeade4a06757ec048d5a940caead16f5a856c", kill_on_drop: false }`
[INFO] [stdout] fabb0993654f03261693d29fd9edeade4a06757ec048d5a940caead16f5a856c
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/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=forbid" "-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@sha256:5736fa189c1c60b01babf4b8b698fe57b6ecc41933a7ff2e0b8d7a221459412b" "/opt/rustwide/cargo-home/bin/cargo" "+8262275854dc0e5381c9d42d56257d94932c5a87" "test" "--frozen", 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] 913f113f15ed885a8977e7fe9d94d186d78516789b4220a6e0976d2d82842267
[INFO] running `Command { std: "docker" "start" "-a" "913f113f15ed885a8977e7fe9d94d186d78516789b4220a6e0976d2d82842267", 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: `stephen_ll` (lib) generated 3 warnings
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.01s
[INFO] [stderr]      Running unittests (/opt/rustwide/target/debug/deps/stephen_ll-ac96634acfa2a7cd)
[INFO] [stdout] 
[INFO] [stdout] running 5 tests
[INFO] [stdout] test linked_list::tests::head_none_invariant ... ok
[INFO] [stdout] test linked_list::tests::print_test ... ok
[INFO] [stdout] test linked_list::tests::sanity_contains ... ok
[INFO] [stdout] test linked_list::tests::sanity_pop ... ok
[INFO] [stdout] test linked_list::contains ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 5 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.01s
[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> (line 97) ... ok
[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] 
[INFO] [stdout] test result: ok. 3 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 1.30s
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "913f113f15ed885a8977e7fe9d94d186d78516789b4220a6e0976d2d82842267", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "913f113f15ed885a8977e7fe9d94d186d78516789b4220a6e0976d2d82842267", kill_on_drop: false }`
[INFO] [stdout] 913f113f15ed885a8977e7fe9d94d186d78516789b4220a6e0976d2d82842267