[INFO] cloning repository https://github.com/yoshiyahoo/rust_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/yoshiyahoo/rust_linked_list" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fyoshiyahoo%2Frust_linked_list", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fyoshiyahoo%2Frust_linked_list'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 2cd03da22d737ddc941fcac2f15b4bef51afb2ac
[INFO] testing yoshiyahoo/rust_linked_list against try#bd7d74411512a3dd3b35d2f699c51dd2557c7e7e+cargoflags=-Zbuild-dir-new-layout for pr-149852-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fyoshiyahoo%2Frust_linked_list" "/workspace/builds/worker-5-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-5-tc2/source'...
[INFO] [stderr] done.
[INFO] started tweaking git repo https://github.com/yoshiyahoo/rust_linked_list
[INFO] finished tweaking git repo https://github.com/yoshiyahoo/rust_linked_list
[INFO] tweaked toml for git repo https://github.com/yoshiyahoo/rust_linked_list written to /workspace/builds/worker-5-tc2/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/yoshiyahoo/rust_linked_list on toolchain bd7d74411512a3dd3b35d2f699c51dd2557c7e7e
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+bd7d74411512a3dd3b35d2f699c51dd2557c7e7e" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/yoshiyahoo/rust_linked_list already has a lockfile, it will not be regenerated
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+bd7d74411512a3dd3b35d2f699c51dd2557c7e7e" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc2/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@sha256:98afbf2d16093dec2546ff8915fddc74e65664aa03fc460b3712b1c2c54a33e4" "/opt/rustwide/cargo-home/bin/cargo" "+bd7d74411512a3dd3b35d2f699c51dd2557c7e7e" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] c931b8c48d77bdd63615e84bd3c9f391dfa9c0374a9ae6ebfb3c215454814881
[INFO] running `Command { std: "docker" "start" "-a" "c931b8c48d77bdd63615e84bd3c9f391dfa9c0374a9ae6ebfb3c215454814881", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "c931b8c48d77bdd63615e84bd3c9f391dfa9c0374a9ae6ebfb3c215454814881", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "c931b8c48d77bdd63615e84bd3c9f391dfa9c0374a9ae6ebfb3c215454814881", kill_on_drop: false }`
[INFO] [stdout] c931b8c48d77bdd63615e84bd3c9f391dfa9c0374a9ae6ebfb3c215454814881
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc2/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" "RUSTDOCFLAGS=--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@sha256:98afbf2d16093dec2546ff8915fddc74e65664aa03fc460b3712b1c2c54a33e4" "/opt/rustwide/cargo-home/bin/cargo" "+bd7d74411512a3dd3b35d2f699c51dd2557c7e7e" "build" "--frozen" "--message-format=json" "-Zbuild-dir-new-layout", kill_on_drop: false }`
[INFO] [stdout] 7b857076c5931e06b0ea11b5fb17c38e90b51a0852d6936cc3d9d83f978c8267
[INFO] running `Command { std: "docker" "start" "-a" "7b857076c5931e06b0ea11b5fb17c38e90b51a0852d6936cc3d9d83f978c8267", kill_on_drop: false }`
[INFO] [stderr]    Compiling rust_linked_list v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: methods `get_element`, `get_length`, and `is_empty` are never used
[INFO] [stdout]    --> src/linked_list.rs:113:12
[INFO] [stdout]     |
[INFO] [stdout]  58 | impl<T> LinkedList<T> {
[INFO] [stdout]     | --------------------- methods in this implementation
[INFO] [stdout] ...
[INFO] [stdout] 113 |     pub fn get_element(&self, position: usize) -> Result<&T, &str> {
[INFO] [stdout]     |            ^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 131 |     pub fn get_length(&self) -> usize {
[INFO] [stdout]     |            ^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 171 |     pub fn is_empty(&self) -> bool {
[INFO] [stdout]     |            ^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 0.56s
[INFO] running `Command { std: "docker" "inspect" "7b857076c5931e06b0ea11b5fb17c38e90b51a0852d6936cc3d9d83f978c8267", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "7b857076c5931e06b0ea11b5fb17c38e90b51a0852d6936cc3d9d83f978c8267", kill_on_drop: false }`
[INFO] [stdout] 7b857076c5931e06b0ea11b5fb17c38e90b51a0852d6936cc3d9d83f978c8267
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc2/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" "RUSTDOCFLAGS=--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@sha256:98afbf2d16093dec2546ff8915fddc74e65664aa03fc460b3712b1c2c54a33e4" "/opt/rustwide/cargo-home/bin/cargo" "+bd7d74411512a3dd3b35d2f699c51dd2557c7e7e" "test" "--frozen" "--no-run" "--message-format=json" "-Zbuild-dir-new-layout", kill_on_drop: false }`
[INFO] [stdout] 4bc0c9fb1ea3fb2327aa86aec3415bbe8b079907497ff9d4847fea192ae0ba31
[INFO] running `Command { std: "docker" "start" "-a" "4bc0c9fb1ea3fb2327aa86aec3415bbe8b079907497ff9d4847fea192ae0ba31", kill_on_drop: false }`
[INFO] [stderr]    Compiling rust_linked_list v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: methods `get_length` and `is_empty` are never used
[INFO] [stdout]    --> src/linked_list.rs:131:12
[INFO] [stdout]     |
[INFO] [stdout]  58 | impl<T> LinkedList<T> {
[INFO] [stdout]     | --------------------- methods in this implementation
[INFO] [stdout] ...
[INFO] [stdout] 131 |     pub fn get_length(&self) -> usize {
[INFO] [stdout]     |            ^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 171 |     pub fn is_empty(&self) -> bool {
[INFO] [stdout]     |            ^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.35s
[INFO] running `Command { std: "docker" "inspect" "4bc0c9fb1ea3fb2327aa86aec3415bbe8b079907497ff9d4847fea192ae0ba31", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "4bc0c9fb1ea3fb2327aa86aec3415bbe8b079907497ff9d4847fea192ae0ba31", kill_on_drop: false }`
[INFO] [stdout] 4bc0c9fb1ea3fb2327aa86aec3415bbe8b079907497ff9d4847fea192ae0ba31
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc2/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" "RUSTDOCFLAGS=--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@sha256:98afbf2d16093dec2546ff8915fddc74e65664aa03fc460b3712b1c2c54a33e4" "/opt/rustwide/cargo-home/bin/cargo" "+bd7d74411512a3dd3b35d2f699c51dd2557c7e7e" "test" "--frozen" "-Zbuild-dir-new-layout", kill_on_drop: false }`
[INFO] [stdout] 10520264b2da27bdc9bd79553d9f1ed46372112422ff883da467c12560fe3d8f
[INFO] running `Command { std: "docker" "start" "-a" "10520264b2da27bdc9bd79553d9f1ed46372112422ff883da467c12560fe3d8f", kill_on_drop: false }`
[INFO] [stderr] warning: methods `get_length` and `is_empty` are never used
[INFO] [stderr]    --> src/linked_list.rs:131:12
[INFO] [stderr]     |
[INFO] [stderr]  58 | impl<T> LinkedList<T> {
[INFO] [stderr]     | --------------------- methods in this implementation
[INFO] [stderr] ...
[INFO] [stderr] 131 |     pub fn get_length(&self) -> usize {
[INFO] [stderr]     |            ^^^^^^^^^^
[INFO] [stderr] ...
[INFO] [stderr] 171 |     pub fn is_empty(&self) -> bool {
[INFO] [stderr]     |            ^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stderr] 
[INFO] [stderr] warning: `rust_linked_list` (bin "rust_linked_list" test) generated 1 warning
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.02s
[INFO] [stderr]      Running unittests src/main.rs (/opt/rustwide/target/debug/build/rust_linked_list/978217a020f6fd21/deps/rust_linked_list-978217a020f6fd21)
[INFO] [stdout] 
[INFO] [stdout] running 2 tests
[INFO] [stderr] error: test failed, to rerun pass `--bin rust_linked_list`
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   process didn't exit successfully: `/opt/rustwide/target/debug/build/rust_linked_list/978217a020f6fd21/deps/rust_linked_list-978217a020f6fd21` (signal: 11, SIGSEGV: invalid memory reference)
[INFO] running `Command { std: "docker" "inspect" "10520264b2da27bdc9bd79553d9f1ed46372112422ff883da467c12560fe3d8f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "10520264b2da27bdc9bd79553d9f1ed46372112422ff883da467c12560fe3d8f", kill_on_drop: false }`
[INFO] [stdout] 10520264b2da27bdc9bd79553d9f1ed46372112422ff883da467c12560fe3d8f
