[INFO] cloning repository https://github.com/godhar/rust_exercises
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/godhar/rust_exercises" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fgodhar%2Frust_exercises", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fgodhar%2Frust_exercises'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 0bb7e1fbab674b4ba200d5d4271b2088e29bf277
[INFO] testing godhar/rust_exercises against beta-2022-02-22 for beta-1.60-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fgodhar%2Frust_exercises" "/workspace/builds/worker-14/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-14/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/godhar/rust_exercises on toolchain beta-2022-02-22
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2022-02-22" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/godhar/rust_exercises
[INFO] finished tweaking git repo https://github.com/godhar/rust_exercises
[INFO] tweaked toml for git repo https://github.com/godhar/rust_exercises written to /workspace/builds/worker-14/source/Cargo.toml
[INFO] crate git repo https://github.com/godhar/rust_exercises already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2022-02-22" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-14/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-14/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@sha256:0cd99ca24d8e8c98e67c542213511d985b8778b5bdcbb160e038429496686047" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2022-02-22" "metadata" "--no-deps" "--format-version=1", 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] 8908dabc102378abc9137710dc1ffc9380804d916625ec4e795905897498d012
[INFO] running `Command { std: "docker" "start" "-a" "8908dabc102378abc9137710dc1ffc9380804d916625ec4e795905897498d012", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "8908dabc102378abc9137710dc1ffc9380804d916625ec4e795905897498d012", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "8908dabc102378abc9137710dc1ffc9380804d916625ec4e795905897498d012", kill_on_drop: false }`
[INFO] [stdout] 8908dabc102378abc9137710dc1ffc9380804d916625ec4e795905897498d012
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-14/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-14/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=warn" "-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@sha256:0cd99ca24d8e8c98e67c542213511d985b8778b5bdcbb160e038429496686047" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2022-02-22" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] f2f95903791c44f39d95ade233bb1e6bdec591d4376ccafcefc33b53f4ecda81
[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" "f2f95903791c44f39d95ade233bb1e6bdec591d4376ccafcefc33b53f4ecda81", kill_on_drop: false }`
[INFO] [stderr]    Compiling start_rust v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused imports: `a`, `b`
[INFO] [stdout]  --> src/tests/a.rs:3:24
[INFO] [stdout]   |
[INFO] [stdout] 3 | use crate::solutions::{a, b};
[INFO] [stdout]   |                        ^  ^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `crate::tests::samples`
[INFO] [stdout]  --> src/tests/a.rs:4:5
[INFO] [stdout]   |
[INFO] [stdout] 4 | use crate::tests::samples;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `batman_poor`, `batman`, `catman`, `catwoman_poor`, `deadshot`, `scandal`
[INFO] [stdout]  --> src/tests/a.rs:5:29
[INFO] [stdout]   |
[INFO] [stdout] 5 | use crate::tests::samples::{batman, batman_poor, catman, catwoman_poor, deadshot, scandal};
[INFO] [stdout]   |                             ^^^^^^  ^^^^^^^^^^^  ^^^^^^  ^^^^^^^^^^^^^  ^^^^^^^^  ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `catman`
[INFO] [stdout]  --> src/tests/samples.rs:3:25
[INFO] [stdout]   |
[INFO] [stdout] 3 | pub(in crate::tests) fn catman<'a>() -> Super<'a> {
[INFO] [stdout]   |                         ^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `deadshot`
[INFO] [stdout]   --> src/tests/samples.rs:12:25
[INFO] [stdout]    |
[INFO] [stdout] 12 | pub(in crate::tests) fn deadshot<'a>() -> Super<'a> {
[INFO] [stdout]    |                         ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `scandal`
[INFO] [stdout]   --> src/tests/samples.rs:21:25
[INFO] [stdout]    |
[INFO] [stdout] 21 | pub(in crate::tests) fn scandal<'a>() -> Super<'a> {
[INFO] [stdout]    |                         ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `batman`
[INFO] [stdout]   --> src/tests/samples.rs:30:25
[INFO] [stdout]    |
[INFO] [stdout] 30 | pub(in crate::tests) fn batman<'a>() -> Super<'a> {
[INFO] [stdout]    |                         ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `rag_doll`
[INFO] [stdout]   --> src/tests/samples.rs:39:25
[INFO] [stdout]    |
[INFO] [stdout] 39 | pub(in crate::tests) fn rag_doll<'a>() -> Super<'a> {
[INFO] [stdout]    |                         ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `catwoman_poor`
[INFO] [stdout]   --> src/tests/samples.rs:48:25
[INFO] [stdout]    |
[INFO] [stdout] 48 | pub(in crate::tests) fn catwoman_poor<'a>() -> Super<'a> {
[INFO] [stdout]    |                         ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `batman_poor`
[INFO] [stdout]   --> src/tests/samples.rs:57:25
[INFO] [stdout]    |
[INFO] [stdout] 57 | pub(in crate::tests) fn batman_poor<'a>() -> Super<'a> {
[INFO] [stdout]    |                         ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `justice_league`
[INFO] [stdout]   --> src/tests/samples.rs:66:25
[INFO] [stdout]    |
[INFO] [stdout] 66 | pub(in crate::tests) fn justice_league<'a>() -> Group<'a> {
[INFO] [stdout]    |                         ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `sinister_five`
[INFO] [stdout]   --> src/tests/samples.rs:73:25
[INFO] [stdout]    |
[INFO] [stdout] 73 | pub(in crate::tests) fn sinister_five<'a>() -> Group<'a> {
[INFO] [stdout]    |                         ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 12 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 2.40s
[INFO] running `Command { std: "docker" "inspect" "f2f95903791c44f39d95ade233bb1e6bdec591d4376ccafcefc33b53f4ecda81", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "f2f95903791c44f39d95ade233bb1e6bdec591d4376ccafcefc33b53f4ecda81", kill_on_drop: false }`
[INFO] [stdout] f2f95903791c44f39d95ade233bb1e6bdec591d4376ccafcefc33b53f4ecda81
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-14/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-14/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=warn" "-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@sha256:0cd99ca24d8e8c98e67c542213511d985b8778b5bdcbb160e038429496686047" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2022-02-22" "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] 58e44df520747a4fe271937314ea6e315b58f027bc4c733f52eddef1a0b9b292
[INFO] running `Command { std: "docker" "start" "-a" "58e44df520747a4fe271937314ea6e315b58f027bc4c733f52eddef1a0b9b292", kill_on_drop: false }`
[INFO] [stderr]    Compiling start_rust v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused imports: `a`, `b`
[INFO] [stdout]  --> src/tests/a.rs:3:24
[INFO] [stdout]   |
[INFO] [stdout] 3 | use crate::solutions::{a, b};
[INFO] [stdout]   |                        ^  ^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `crate::tests::samples`
[INFO] [stdout]  --> src/tests/a.rs:4:5
[INFO] [stdout]   |
[INFO] [stdout] 4 | use crate::tests::samples;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `batman_poor`, `batman`, `catman`, `catwoman_poor`, `deadshot`, `scandal`
[INFO] [stdout]  --> src/tests/a.rs:5:29
[INFO] [stdout]   |
[INFO] [stdout] 5 | use crate::tests::samples::{batman, batman_poor, catman, catwoman_poor, deadshot, scandal};
[INFO] [stdout]   |                             ^^^^^^  ^^^^^^^^^^^  ^^^^^^  ^^^^^^^^^^^^^  ^^^^^^^^  ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `catman`
[INFO] [stdout]  --> src/tests/samples.rs:3:25
[INFO] [stdout]   |
[INFO] [stdout] 3 | pub(in crate::tests) fn catman<'a>() -> Super<'a> {
[INFO] [stdout]   |                         ^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `deadshot`
[INFO] [stdout]   --> src/tests/samples.rs:12:25
[INFO] [stdout]    |
[INFO] [stdout] 12 | pub(in crate::tests) fn deadshot<'a>() -> Super<'a> {
[INFO] [stdout]    |                         ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `scandal`
[INFO] [stdout]   --> src/tests/samples.rs:21:25
[INFO] [stdout]    |
[INFO] [stdout] 21 | pub(in crate::tests) fn scandal<'a>() -> Super<'a> {
[INFO] [stdout]    |                         ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `batman`
[INFO] [stdout]   --> src/tests/samples.rs:30:25
[INFO] [stdout]    |
[INFO] [stdout] 30 | pub(in crate::tests) fn batman<'a>() -> Super<'a> {
[INFO] [stdout]    |                         ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `rag_doll`
[INFO] [stdout]   --> src/tests/samples.rs:39:25
[INFO] [stdout]    |
[INFO] [stdout] 39 | pub(in crate::tests) fn rag_doll<'a>() -> Super<'a> {
[INFO] [stdout]    |                         ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `catwoman_poor`
[INFO] [stdout]   --> src/tests/samples.rs:48:25
[INFO] [stdout]    |
[INFO] [stdout] 48 | pub(in crate::tests) fn catwoman_poor<'a>() -> Super<'a> {
[INFO] [stdout]    |                         ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `batman_poor`
[INFO] [stdout]   --> src/tests/samples.rs:57:25
[INFO] [stdout]    |
[INFO] [stdout] 57 | pub(in crate::tests) fn batman_poor<'a>() -> Super<'a> {
[INFO] [stdout]    |                         ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `justice_league`
[INFO] [stdout]   --> src/tests/samples.rs:66:25
[INFO] [stdout]    |
[INFO] [stdout] 66 | pub(in crate::tests) fn justice_league<'a>() -> Group<'a> {
[INFO] [stdout]    |                         ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `sinister_five`
[INFO] [stdout]   --> src/tests/samples.rs:73:25
[INFO] [stdout]    |
[INFO] [stdout] 73 | pub(in crate::tests) fn sinister_five<'a>() -> Group<'a> {
[INFO] [stdout]    |                         ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 12 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `batman`
[INFO] [stdout]  --> src/tests/a.rs:5:29
[INFO] [stdout]   |
[INFO] [stdout] 5 | use crate::tests::samples::{batman, batman_poor, catman, catwoman_poor, deadshot, scandal};
[INFO] [stdout]   |                             ^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 1.52s
[INFO] running `Command { std: "docker" "inspect" "58e44df520747a4fe271937314ea6e315b58f027bc4c733f52eddef1a0b9b292", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "58e44df520747a4fe271937314ea6e315b58f027bc4c733f52eddef1a0b9b292", kill_on_drop: false }`
[INFO] [stdout] 58e44df520747a4fe271937314ea6e315b58f027bc4c733f52eddef1a0b9b292
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-14/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-14/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=warn" "-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@sha256:0cd99ca24d8e8c98e67c542213511d985b8778b5bdcbb160e038429496686047" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2022-02-22" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] 752d0d6889bf25d44703308f30cb8cfb8156ec14cde75e4e27b28960ed49d051
[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" "752d0d6889bf25d44703308f30cb8cfb8156ec14cde75e4e27b28960ed49d051", kill_on_drop: false }`
[INFO] [stderr] warning: unused imports: `a`, `b`
[INFO] [stderr]  --> src/tests/a.rs:3:24
[INFO] [stderr]   |
[INFO] [stderr] 3 | use crate::solutions::{a, b};
[INFO] [stderr]   |                        ^  ^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `crate::tests::samples`
[INFO] [stderr]  --> src/tests/a.rs:4:5
[INFO] [stderr]   |
[INFO] [stderr] 4 | use crate::tests::samples;
[INFO] [stderr]   |     ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused imports: `batman_poor`, `batman`, `catman`, `catwoman_poor`, `deadshot`, `scandal`
[INFO] [stderr]  --> src/tests/a.rs:5:29
[INFO] [stderr]   |
[INFO] [stderr] 5 | use crate::tests::samples::{batman, batman_poor, catman, catwoman_poor, deadshot, scandal};
[INFO] [stderr]   |                             ^^^^^^  ^^^^^^^^^^^  ^^^^^^  ^^^^^^^^^^^^^  ^^^^^^^^  ^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `catman`
[INFO] [stderr]  --> src/tests/samples.rs:3:25
[INFO] [stderr]   |
[INFO] [stderr] 3 | pub(in crate::tests) fn catman<'a>() -> Super<'a> {
[INFO] [stderr]   |                         ^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `deadshot`
[INFO] [stderr]   --> src/tests/samples.rs:12:25
[INFO] [stderr]    |
[INFO] [stderr] 12 | pub(in crate::tests) fn deadshot<'a>() -> Super<'a> {
[INFO] [stderr]    |                         ^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `scandal`
[INFO] [stderr]   --> src/tests/samples.rs:21:25
[INFO] [stderr]    |
[INFO] [stderr] 21 | pub(in crate::tests) fn scandal<'a>() -> Super<'a> {
[INFO] [stderr]    |                         ^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `batman`
[INFO] [stderr]   --> src/tests/samples.rs:30:25
[INFO] [stderr]    |
[INFO] [stderr] 30 | pub(in crate::tests) fn batman<'a>() -> Super<'a> {
[INFO] [stderr]    |                         ^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `rag_doll`
[INFO] [stderr]   --> src/tests/samples.rs:39:25
[INFO] [stderr]    |
[INFO] [stderr] 39 | pub(in crate::tests) fn rag_doll<'a>() -> Super<'a> {
[INFO] [stderr]    |                         ^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `catwoman_poor`
[INFO] [stderr]   --> src/tests/samples.rs:48:25
[INFO] [stderr]    |
[INFO] [stderr] 48 | pub(in crate::tests) fn catwoman_poor<'a>() -> Super<'a> {
[INFO] [stderr]    |                         ^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `batman_poor`
[INFO] [stderr]   --> src/tests/samples.rs:57:25
[INFO] [stderr]    |
[INFO] [stderr] 57 | pub(in crate::tests) fn batman_poor<'a>() -> Super<'a> {
[INFO] [stderr]    |                         ^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `justice_league`
[INFO] [stderr]   --> src/tests/samples.rs:66:25
[INFO] [stderr]    |
[INFO] [stderr] 66 | pub(in crate::tests) fn justice_league<'a>() -> Group<'a> {
[INFO] [stderr]    |                         ^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `sinister_five`
[INFO] [stderr]   --> src/tests/samples.rs:73:25
[INFO] [stderr]    |
[INFO] [stderr] 73 | pub(in crate::tests) fn sinister_five<'a>() -> Group<'a> {
[INFO] [stderr]    |                         ^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: `start_rust` (lib) generated 12 warnings
[INFO] [stderr] warning: unused import: `batman`
[INFO] [stderr]  --> src/tests/a.rs:5:29
[INFO] [stderr]   |
[INFO] [stderr] 5 | use crate::tests::samples::{batman, batman_poor, catman, catwoman_poor, deadshot, scandal};
[INFO] [stderr]   |                             ^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: `start_rust` (lib test) generated 1 warning
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.01s
[INFO] [stderr]      Running unittests (/opt/rustwide/target/debug/deps/start_rust-46b29e150e8eb392)
[INFO] [stdout] 
[INFO] [stdout] running 4 tests
[INFO] [stderr] 
[INFO] [stderr] thread 'tests::a::should_return_largest_group' has overflowed its stack
[INFO] [stderr] fatal runtime error: stack overflow
[INFO] [stderr] error: test failed, to rerun pass '--lib'
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   process didn't exit successfully: `/opt/rustwide/target/debug/deps/start_rust-46b29e150e8eb392` (signal: 6, SIGABRT: process abort signal)
[INFO] running `Command { std: "docker" "inspect" "752d0d6889bf25d44703308f30cb8cfb8156ec14cde75e4e27b28960ed49d051", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "752d0d6889bf25d44703308f30cb8cfb8156ec14cde75e4e27b28960ed49d051", kill_on_drop: false }`
[INFO] [stdout] 752d0d6889bf25d44703308f30cb8cfb8156ec14cde75e4e27b28960ed49d051