[INFO] fetching crate fix_me 0.1.2...
[INFO] testing fix_me-0.1.2 against beta-2021-01-01 for beta-1.50-1
[INFO] extracting crate fix_me 0.1.2 into /workspace/builds/worker-4/source
[INFO] validating manifest of crates.io crate fix_me 0.1.2 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 crates.io crate fix_me 0.1.2
[INFO] finished tweaking crates.io crate fix_me 0.1.2
[INFO] tweaked toml for crates.io crate fix_me 0.1.2 written to /workspace/builds/worker-4/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2021-01-01" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[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-4/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/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] 291a6cbcd9b2842fbbe20e4cef9dbd1969bf520f8ff21c4c8e1d6dffd67faf63
[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" "291a6cbcd9b2842fbbe20e4cef9dbd1969bf520f8ff21c4c8e1d6dffd67faf63", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "291a6cbcd9b2842fbbe20e4cef9dbd1969bf520f8ff21c4c8e1d6dffd67faf63", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "291a6cbcd9b2842fbbe20e4cef9dbd1969bf520f8ff21c4c8e1d6dffd67faf63", kill_on_drop: false }`
[INFO] [stdout] 291a6cbcd9b2842fbbe20e4cef9dbd1969bf520f8ff21c4c8e1d6dffd67faf63
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/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] 377c4d9be70aafb7614fc5f29c4f71a3283417d9decff1e0d52c8154fa587a3c
[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" "377c4d9be70aafb7614fc5f29c4f71a3283417d9decff1e0d52c8154fa587a3c", kill_on_drop: false }`
[INFO] [stderr]    Compiling fix_me v0.1.2 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.42s
[INFO] running `Command { std: "docker" "inspect" "377c4d9be70aafb7614fc5f29c4f71a3283417d9decff1e0d52c8154fa587a3c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "377c4d9be70aafb7614fc5f29c4f71a3283417d9decff1e0d52c8154fa587a3c", kill_on_drop: false }`
[INFO] [stdout] 377c4d9be70aafb7614fc5f29c4f71a3283417d9decff1e0d52c8154fa587a3c
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/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] 0b563bd29f78286df161a9423053009177fd99fd41d812563b4a4404049bdf78
[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" "0b563bd29f78286df161a9423053009177fd99fd41d812563b4a4404049bdf78", kill_on_drop: false }`
[INFO] [stderr]    Compiling fix_me v0.1.2 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused variable: `test_string`
[INFO] [stdout]   --> tests/integration_test.rs:22:9
[INFO] [stdout]    |
[INFO] [stdout] 22 |     let test_string = String::from("test");
[INFO] [stdout]    |         ^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_test_string`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `val`
[INFO] [stdout]   --> tests/integration_test.rs:43:13
[INFO] [stdout]    |
[INFO] [stdout] 43 |         let val = to_fix();
[INFO] [stdout]    |             ^^^ help: if this is intentional, prefix it with an underscore: `_val`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.75s
[INFO] running `Command { std: "docker" "inspect" "0b563bd29f78286df161a9423053009177fd99fd41d812563b4a4404049bdf78", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "0b563bd29f78286df161a9423053009177fd99fd41d812563b4a4404049bdf78", kill_on_drop: false }`
[INFO] [stdout] 0b563bd29f78286df161a9423053009177fd99fd41d812563b4a4404049bdf78
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/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] [stdout] 2850be65dd3795d2c1446bd3e5c4979771bdc0bad81186142ed9ea4c50931d25
[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" "2850be65dd3795d2c1446bd3e5c4979771bdc0bad81186142ed9ea4c50931d25", kill_on_drop: false }`
[INFO] [stderr] warning: unused variable: `test_string`
[INFO] [stderr]   --> tests/integration_test.rs:22:9
[INFO] [stderr]    |
[INFO] [stderr] 22 |     let test_string = String::from("test");
[INFO] [stderr]    |         ^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_test_string`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `val`
[INFO] [stderr]   --> tests/integration_test.rs:43:13
[INFO] [stderr]    |
[INFO] [stderr] 43 |         let val = to_fix();
[INFO] [stderr]    |             ^^^ help: if this is intentional, prefix it with an underscore: `_val`
[INFO] [stderr] 
[INFO] [stderr] warning: 2 warnings emitted
[INFO] [stderr] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.01s
[INFO] [stderr]      Running /opt/rustwide/target/debug/deps/fix_me-1e11170662f49c43
[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] [stderr]      Running /opt/rustwide/target/debug/deps/integration_test-0e010f4924691c24
[INFO] [stdout] 
[INFO] [stdout] running 4 tests
[INFO] [stdout] test scope_test_2 ... ok
[INFO] [stdout] test test::test_1 ... ok
[INFO] [stdout] test scope_test ... ok
[INFO] [stdout] test macro_test ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 4 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] [stderr]    Doc-tests fix_me
[INFO] [stdout] 
[INFO] [stdout] running 1 test
[INFO] [stdout] test src/lib.rs - (line 18) ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 1 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.29s
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "2850be65dd3795d2c1446bd3e5c4979771bdc0bad81186142ed9ea4c50931d25", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "2850be65dd3795d2c1446bd3e5c4979771bdc0bad81186142ed9ea4c50931d25", kill_on_drop: false }`
[INFO] [stdout] 2850be65dd3795d2c1446bd3e5c4979771bdc0bad81186142ed9ea4c50931d25