[INFO] cloning repository https://github.com/DarioBiscevic/eq-solver
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/DarioBiscevic/eq-solver" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FDarioBiscevic%2Feq-solver", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FDarioBiscevic%2Feq-solver'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 9e2bd301718040a36c31765e2d3b8e85abed0b95
[INFO] testing DarioBiscevic/eq-solver against 1.49.0 for beta-1.50-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FDarioBiscevic%2Feq-solver" "/workspace/builds/worker-8/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-8/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/DarioBiscevic/eq-solver on toolchain 1.49.0
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.49.0" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/DarioBiscevic/eq-solver
[INFO] finished tweaking git repo https://github.com/DarioBiscevic/eq-solver
[INFO] tweaked toml for git repo https://github.com/DarioBiscevic/eq-solver written to /workspace/builds/worker-8/source/Cargo.toml
[INFO] crate git repo https://github.com/DarioBiscevic/eq-solver already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.49.0" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/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" "rustops/crates-build-env@sha256:b8eeb62f26c39b23691079a6cb6de528d8e88b4d71a8f6b1d30f8ba7d9c16de9" "/opt/rustwide/cargo-home/bin/cargo" "+1.49.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] eaa3cc3b048219e620cf61f8d8585bc92b231423338a2d5fdd8d06cca334fd84
[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" "eaa3cc3b048219e620cf61f8d8585bc92b231423338a2d5fdd8d06cca334fd84", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "eaa3cc3b048219e620cf61f8d8585bc92b231423338a2d5fdd8d06cca334fd84", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "eaa3cc3b048219e620cf61f8d8585bc92b231423338a2d5fdd8d06cca334fd84", kill_on_drop: false }`
[INFO] [stdout] eaa3cc3b048219e620cf61f8d8585bc92b231423338a2d5fdd8d06cca334fd84
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/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" "rustops/crates-build-env@sha256:b8eeb62f26c39b23691079a6cb6de528d8e88b4d71a8f6b1d30f8ba7d9c16de9" "/opt/rustwide/cargo-home/bin/cargo" "+1.49.0" "build" "--frozen" "--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] 96842b1f2d70050298efb11317deb62d6bd7a8cbd55b17c1ad41d04ce6d5af02
[INFO] running `Command { std: "docker" "start" "-a" "96842b1f2d70050298efb11317deb62d6bd7a8cbd55b17c1ad41d04ce6d5af02", kill_on_drop: false }`
[INFO] [stderr]    Compiling eq_solver v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused variable: `equals_index`
[INFO] [stdout]   --> src/lib/mod.rs:34:18
[INFO] [stdout]    |
[INFO] [stdout] 34 |     if let Some((equals_index, _)) = char_iterator().find(|(_, ch)| ch == &'='){
[INFO] [stdout]    |                  ^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_equals_index`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct is never constructed: `Element`
[INFO] [stdout]  --> src/lib/mod.rs:9:8
[INFO] [stdout]   |
[INFO] [stdout] 9 | struct Element{
[INFO] [stdout]   |        ^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct is never constructed: `Equation`
[INFO] [stdout]   --> src/lib/mod.rs:15:8
[INFO] [stdout]    |
[INFO] [stdout] 15 | struct Equation{
[INFO] [stdout]    |        ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 3 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.94s
[INFO] running `Command { std: "docker" "inspect" "96842b1f2d70050298efb11317deb62d6bd7a8cbd55b17c1ad41d04ce6d5af02", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "96842b1f2d70050298efb11317deb62d6bd7a8cbd55b17c1ad41d04ce6d5af02", kill_on_drop: false }`
[INFO] [stdout] 96842b1f2d70050298efb11317deb62d6bd7a8cbd55b17c1ad41d04ce6d5af02
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/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" "rustops/crates-build-env@sha256:b8eeb62f26c39b23691079a6cb6de528d8e88b4d71a8f6b1d30f8ba7d9c16de9" "/opt/rustwide/cargo-home/bin/cargo" "+1.49.0" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] b373ac216d9b4f4774230f3a1273b95b410f3140cfcb0c8b0f3789c97ab042d6
[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" "b373ac216d9b4f4774230f3a1273b95b410f3140cfcb0c8b0f3789c97ab042d6", kill_on_drop: false }`
[INFO] [stderr]    Compiling eq_solver v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused variable: `equals_index`
[INFO] [stdout]   --> src/lib/mod.rs:34:18
[INFO] [stdout]    |
[INFO] [stdout] 34 |     if let Some((equals_index, _)) = char_iterator().find(|(_, ch)| ch == &'='){
[INFO] [stdout]    |                  ^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_equals_index`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct is never constructed: `Element`
[INFO] [stdout]  --> src/lib/mod.rs:9:8
[INFO] [stdout]   |
[INFO] [stdout] 9 | struct Element{
[INFO] [stdout]   |        ^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct is never constructed: `Equation`
[INFO] [stdout]   --> src/lib/mod.rs:15:8
[INFO] [stdout]    |
[INFO] [stdout] 15 | struct Equation{
[INFO] [stdout]    |        ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 3 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.75s
[INFO] running `Command { std: "docker" "inspect" "b373ac216d9b4f4774230f3a1273b95b410f3140cfcb0c8b0f3789c97ab042d6", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "b373ac216d9b4f4774230f3a1273b95b410f3140cfcb0c8b0f3789c97ab042d6", kill_on_drop: false }`
[INFO] [stdout] b373ac216d9b4f4774230f3a1273b95b410f3140cfcb0c8b0f3789c97ab042d6
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/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" "rustops/crates-build-env@sha256:b8eeb62f26c39b23691079a6cb6de528d8e88b4d71a8f6b1d30f8ba7d9c16de9" "/opt/rustwide/cargo-home/bin/cargo" "+1.49.0" "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] 13539ecb80a2da29c5eeb0489b806b3671a983cf6ad3d429f5d92858d07b70be
[INFO] running `Command { std: "docker" "start" "-a" "13539ecb80a2da29c5eeb0489b806b3671a983cf6ad3d429f5d92858d07b70be", kill_on_drop: false }`
[INFO] [stderr] warning: unused variable: `equals_index`
[INFO] [stderr]   --> src/lib/mod.rs:34:18
[INFO] [stderr]    |
[INFO] [stderr] 34 |     if let Some((equals_index, _)) = char_iterator().find(|(_, ch)| ch == &'='){
[INFO] [stderr]    |                  ^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_equals_index`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: struct is never constructed: `Element`
[INFO] [stderr]  --> src/lib/mod.rs:9:8
[INFO] [stderr]   |
[INFO] [stderr] 9 | struct Element{
[INFO] [stderr]   |        ^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: struct is never constructed: `Equation`
[INFO] [stderr]   --> src/lib/mod.rs:15:8
[INFO] [stderr]    |
[INFO] [stderr] 15 | struct Equation{
[INFO] [stderr]    |        ^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: 3 warnings emitted
[INFO] [stderr] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.02s
[INFO] [stderr]      Running /opt/rustwide/target/debug/deps/eq_solver-44c656ba1d073de9
[INFO] [stdout] 
[INFO] [stdout] running 0 tests
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "13539ecb80a2da29c5eeb0489b806b3671a983cf6ad3d429f5d92858d07b70be", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "13539ecb80a2da29c5eeb0489b806b3671a983cf6ad3d429f5d92858d07b70be", kill_on_drop: false }`
[INFO] [stdout] 13539ecb80a2da29c5eeb0489b806b3671a983cf6ad3d429f5d92858d07b70be