[INFO] cloning repository https://github.com/JacobHaig/Learning-Rust
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/JacobHaig/Learning-Rust" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FJacobHaig%2FLearning-Rust", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FJacobHaig%2FLearning-Rust'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 3ebb4bc6299395bad15fba68692b156ce9be0e27
[INFO] testing JacobHaig/Learning-Rust against beta-2021-01-01 for beta-1.50-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FJacobHaig%2FLearning-Rust" "/workspace/builds/worker-7/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-7/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/JacobHaig/Learning-Rust on toolchain beta-2021-01-01
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2021-01-01" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/JacobHaig/Learning-Rust
[INFO] finished tweaking git repo https://github.com/JacobHaig/Learning-Rust
[INFO] tweaked toml for git repo https://github.com/JacobHaig/Learning-Rust written to /workspace/builds/worker-7/source/Cargo.toml
[INFO] crate git repo https://github.com/JacobHaig/Learning-Rust already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2021-01-01" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/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" "+beta-2021-01-01" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 67f1c3da5d383c71a651f5789df7c033332c6b3cad10ee7f45e33f64de7dd778
[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" "67f1c3da5d383c71a651f5789df7c033332c6b3cad10ee7f45e33f64de7dd778", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "67f1c3da5d383c71a651f5789df7c033332c6b3cad10ee7f45e33f64de7dd778", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "67f1c3da5d383c71a651f5789df7c033332c6b3cad10ee7f45e33f64de7dd778", kill_on_drop: false }`
[INFO] [stdout] 67f1c3da5d383c71a651f5789df7c033332c6b3cad10ee7f45e33f64de7dd778
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/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" "+beta-2021-01-01" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] a624cf6ccc937ac68fbc3852b8cd55334d1f2571a2ad42b34168a9e98f985a44
[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" "a624cf6ccc937ac68fbc3852b8cd55334d1f2571a2ad42b34168a9e98f985a44", kill_on_drop: false }`
[INFO] [stderr]    Compiling autocfg v0.1.4
[INFO] [stderr]    Compiling libc v0.2.58
[INFO] [stderr]    Compiling rand_jitter v0.1.4
[INFO] [stderr]    Compiling rand_chacha v0.1.1
[INFO] [stderr]    Compiling rand_pcg v0.1.2
[INFO] [stderr]    Compiling rand v0.6.5
[INFO] [stderr]    Compiling rand_os v0.1.3
[INFO] [stderr]    Compiling untitled v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: associated function is never used: `area`
[INFO] [stdout]   --> src/main.rs:14:8
[INFO] [stdout]    |
[INFO] [stdout] 14 |     fn area(&self) -> u32 {
[INFO] [stdout]    |        ^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `area`
[INFO] [stdout]   --> src/main.rs:22:4
[INFO] [stdout]    |
[INFO] [stdout] 22 | fn area(r: &Rect) -> u32 {
[INFO] [stdout]    |    ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 10.01s
[INFO] running `Command { std: "docker" "inspect" "a624cf6ccc937ac68fbc3852b8cd55334d1f2571a2ad42b34168a9e98f985a44", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "a624cf6ccc937ac68fbc3852b8cd55334d1f2571a2ad42b34168a9e98f985a44", kill_on_drop: false }`
[INFO] [stdout] a624cf6ccc937ac68fbc3852b8cd55334d1f2571a2ad42b34168a9e98f985a44
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/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" "+beta-2021-01-01" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] efca2416f4ab6d6f37883fb8060c13301e6324876d6cb24377aa8d00a398682b
[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" "efca2416f4ab6d6f37883fb8060c13301e6324876d6cb24377aa8d00a398682b", kill_on_drop: false }`
[INFO] [stderr]    Compiling untitled v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: associated function is never used: `area`
[INFO] [stdout]   --> src/main.rs:14:8
[INFO] [stdout]    |
[INFO] [stdout] 14 |     fn area(&self) -> u32 {
[INFO] [stdout]    |        ^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `area`
[INFO] [stdout]   --> src/main.rs:22:4
[INFO] [stdout]    |
[INFO] [stdout] 22 | fn area(r: &Rect) -> u32 {
[INFO] [stdout]    |    ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.86s
[INFO] running `Command { std: "docker" "inspect" "efca2416f4ab6d6f37883fb8060c13301e6324876d6cb24377aa8d00a398682b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "efca2416f4ab6d6f37883fb8060c13301e6324876d6cb24377aa8d00a398682b", kill_on_drop: false }`
[INFO] [stdout] efca2416f4ab6d6f37883fb8060c13301e6324876d6cb24377aa8d00a398682b
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/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" "+beta-2021-01-01" "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] 1f8e6f78dab88da9a162ca073945c8d0fb542e79c2465c3fd2c56414c5c4bfad
[INFO] running `Command { std: "docker" "start" "-a" "1f8e6f78dab88da9a162ca073945c8d0fb542e79c2465c3fd2c56414c5c4bfad", kill_on_drop: false }`
[INFO] [stderr] warning: associated function is never used: `area`
[INFO] [stderr]   --> src/main.rs:14:8
[INFO] [stderr]    |
[INFO] [stderr] 14 |     fn area(&self) -> u32 {
[INFO] [stderr]    |        ^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `area`
[INFO] [stderr]   --> src/main.rs:22:4
[INFO] [stderr]    |
[INFO] [stderr] 22 | fn area(r: &Rect) -> u32 {
[INFO] [stderr]    |    ^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: 2 warnings emitted
[INFO] [stderr] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.05s
[INFO] [stderr]      Running /opt/rustwide/target/debug/deps/untitled-f0ed0ef043a6bc35
[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; finished in 0.00s
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "1f8e6f78dab88da9a162ca073945c8d0fb542e79c2465c3fd2c56414c5c4bfad", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "1f8e6f78dab88da9a162ca073945c8d0fb542e79c2465c3fd2c56414c5c4bfad", kill_on_drop: false }`
[INFO] [stdout] 1f8e6f78dab88da9a162ca073945c8d0fb542e79c2465c3fd2c56414c5c4bfad