[INFO] cloning repository https://github.com/Spoonbender/rust-intro-demos
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/Spoonbender/rust-intro-demos" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FSpoonbender%2Frust-intro-demos", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FSpoonbender%2Frust-intro-demos'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 7c2c50f1bdf7a50fc484ac7d9f4e74240f24bdd2
[INFO] testing Spoonbender/rust-intro-demos against beta-2022-04-10 for beta-1.61-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FSpoonbender%2Frust-intro-demos" "/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/Spoonbender/rust-intro-demos on toolchain beta-2022-04-10
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2022-04-10" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/Spoonbender/rust-intro-demos
[INFO] finished tweaking git repo https://github.com/Spoonbender/rust-intro-demos
[INFO] tweaked toml for git repo https://github.com/Spoonbender/rust-intro-demos written to /workspace/builds/worker-6/source/Cargo.toml
[INFO] crate git repo https://github.com/Spoonbender/rust-intro-demos already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2022-04-10" "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:eaef2f80f755933c374d2ae5edccceec0c1312ceb8a4e0b6404e8ab76561e1e5" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2022-04-10" "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] 4ca9072a62dfe9715280c0e3d9f91130b0775fb31d332be0db66d245d9d53510
[INFO] running `Command { std: "docker" "start" "-a" "4ca9072a62dfe9715280c0e3d9f91130b0775fb31d332be0db66d245d9d53510", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "4ca9072a62dfe9715280c0e3d9f91130b0775fb31d332be0db66d245d9d53510", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "4ca9072a62dfe9715280c0e3d9f91130b0775fb31d332be0db66d245d9d53510", kill_on_drop: false }`
[INFO] [stdout] 4ca9072a62dfe9715280c0e3d9f91130b0775fb31d332be0db66d245d9d53510
[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=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:eaef2f80f755933c374d2ae5edccceec0c1312ceb8a4e0b6404e8ab76561e1e5" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2022-04-10" "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] 921c9ba09b81e0429dd880ddb50e4ef3995ad978704ec0575769d7b7cfd6a4f2
[INFO] running `Command { std: "docker" "start" "-a" "921c9ba09b81e0429dd880ddb50e4ef3995ad978704ec0575769d7b7cfd6a4f2", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.86
[INFO] [stderr]    Compiling num-traits v0.2.14
[INFO] [stderr]    Compiling num-integer v0.1.44
[INFO] [stderr]    Compiling getrandom v0.2.2
[INFO] [stderr]    Compiling time v0.1.43
[INFO] [stderr]    Compiling rand_core v0.6.2
[INFO] [stderr]    Compiling rand_chacha v0.3.0
[INFO] [stderr]    Compiling chrono v0.4.19
[INFO] [stderr]    Compiling rand v0.8.3
[INFO] [stderr]    Compiling rust-intro-demos v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 15.35s
[INFO] running `Command { std: "docker" "inspect" "921c9ba09b81e0429dd880ddb50e4ef3995ad978704ec0575769d7b7cfd6a4f2", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "921c9ba09b81e0429dd880ddb50e4ef3995ad978704ec0575769d7b7cfd6a4f2", kill_on_drop: false }`
[INFO] [stdout] 921c9ba09b81e0429dd880ddb50e4ef3995ad978704ec0575769d7b7cfd6a4f2
[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=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:eaef2f80f755933c374d2ae5edccceec0c1312ceb8a4e0b6404e8ab76561e1e5" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2022-04-10" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] febbc8933f98025931588130a913e621c8f4b0f848508fb6cc41c6a296fb273f
[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" "febbc8933f98025931588130a913e621c8f4b0f848508fb6cc41c6a296fb273f", kill_on_drop: false }`
[INFO] [stderr]    Compiling rust-intro-demos v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `ops::DerefMut`
[INFO] [stdout]  --> examples/shared_state.rs:2:5
[INFO] [stdout]   |
[INFO] [stdout] 2 |     ops::DerefMut,
[INFO] [stdout]   |     ^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `do_something2`
[INFO] [stdout]   --> examples/errors.rs:23:4
[INFO] [stdout]    |
[INFO] [stdout] 23 | fn do_something2(file_name: &str) -> Result<()> {
[INFO] [stdout]    |    ^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `do_something3`
[INFO] [stdout]   --> examples/errors.rs:29:4
[INFO] [stdout]    |
[INFO] [stdout] 29 | fn do_something3(file_name: &str) -> Result<()> {
[INFO] [stdout]    |    ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `main2`
[INFO] [stdout]   --> examples/shared_state.rs:26:4
[INFO] [stdout]    |
[INFO] [stdout] 26 | fn main2() {
[INFO] [stdout]    |    ^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 5.62s
[INFO] [stderr]   Executable unittests src/main.rs (/opt/rustwide/target/debug/deps/rust_intro_demos-a11dbac3b3bf6f7f)
[INFO] running `Command { std: "docker" "inspect" "febbc8933f98025931588130a913e621c8f4b0f848508fb6cc41c6a296fb273f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "febbc8933f98025931588130a913e621c8f4b0f848508fb6cc41c6a296fb273f", kill_on_drop: false }`
[INFO] [stdout] febbc8933f98025931588130a913e621c8f4b0f848508fb6cc41c6a296fb273f
[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=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:eaef2f80f755933c374d2ae5edccceec0c1312ceb8a4e0b6404e8ab76561e1e5" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2022-04-10" "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] 645f4c346a4ccac9ed65aaa578d570bff3e5f7ce2d68e09f3ad59c0e59646f95
[INFO] running `Command { std: "docker" "start" "-a" "645f4c346a4ccac9ed65aaa578d570bff3e5f7ce2d68e09f3ad59c0e59646f95", kill_on_drop: false }`
[INFO] [stderr] warning: unused import: `ops::DerefMut`
[INFO] [stderr]  --> examples/shared_state.rs:2:5
[INFO] [stderr]   |
[INFO] [stderr] 2 |     ops::DerefMut,
[INFO] [stderr]   |     ^^^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `main2`
[INFO] [stderr]   --> examples/shared_state.rs:26:4
[INFO] [stderr]    |
[INFO] [stderr] 26 | fn main2() {
[INFO] [stderr]    |    ^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `do_something2`
[INFO] [stderr]   --> examples/errors.rs:23:4
[INFO] [stderr]    |
[INFO] [stderr] 23 | fn do_something2(file_name: &str) -> Result<()> {
[INFO] [stderr]    |    ^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `do_something3`
[INFO] [stderr]   --> examples/errors.rs:29:4
[INFO] [stderr]    |
[INFO] [stderr] 29 | fn do_something3(file_name: &str) -> Result<()> {
[INFO] [stderr]    |    ^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: `rust-intro-demos` (example "shared_state") generated 2 warnings
[INFO] [stderr] warning: `rust-intro-demos` (example "errors") generated 2 warnings
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.04s
[INFO] [stderr]      Running unittests src/main.rs (/opt/rustwide/target/debug/deps/rust_intro_demos-a11dbac3b3bf6f7f)
[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" "645f4c346a4ccac9ed65aaa578d570bff3e5f7ce2d68e09f3ad59c0e59646f95", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "645f4c346a4ccac9ed65aaa578d570bff3e5f7ce2d68e09f3ad59c0e59646f95", kill_on_drop: false }`
[INFO] [stdout] 645f4c346a4ccac9ed65aaa578d570bff3e5f7ce2d68e09f3ad59c0e59646f95