[INFO] fetching crate asserter 0.1.0...
[INFO] testing asserter-0.1.0 against 1.49.0 for beta-1.50-1
[INFO] extracting crate asserter 0.1.0 into /workspace/builds/worker-4/source
[INFO] validating manifest of crates.io crate asserter 0.1.0 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 crates.io crate asserter 0.1.0
[INFO] finished tweaking crates.io crate asserter 0.1.0
[INFO] tweaked toml for crates.io crate asserter 0.1.0 written to /workspace/builds/worker-4/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.49.0" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[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-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" "+1.49.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 1617e2ace545688ebfadde07bfba9dbe253e512542f023f3126190ccebae62e6
[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" "1617e2ace545688ebfadde07bfba9dbe253e512542f023f3126190ccebae62e6", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "1617e2ace545688ebfadde07bfba9dbe253e512542f023f3126190ccebae62e6", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "1617e2ace545688ebfadde07bfba9dbe253e512542f023f3126190ccebae62e6", kill_on_drop: false }`
[INFO] [stdout] 1617e2ace545688ebfadde07bfba9dbe253e512542f023f3126190ccebae62e6
[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" "+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] d4a6116e3f70e5f9ae9d661426b3a67fe72ae1f0498170d6f44d547e7a53de4f
[INFO] running `Command { std: "docker" "start" "-a" "d4a6116e3f70e5f9ae9d661426b3a67fe72ae1f0498170d6f44d547e7a53de4f", kill_on_drop: false }`
[INFO] [stderr]    Compiling syn v1.0.57
[INFO] [stderr]    Compiling pmutil v0.5.3
[INFO] [stderr]    Compiling asserter-macros v0.1.0
[INFO] [stderr]    Compiling asserter v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 28.20s
[INFO] running `Command { std: "docker" "inspect" "d4a6116e3f70e5f9ae9d661426b3a67fe72ae1f0498170d6f44d547e7a53de4f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "d4a6116e3f70e5f9ae9d661426b3a67fe72ae1f0498170d6f44d547e7a53de4f", kill_on_drop: false }`
[INFO] [stdout] d4a6116e3f70e5f9ae9d661426b3a67fe72ae1f0498170d6f44d547e7a53de4f
[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" "+1.49.0" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 52139604ee90fd762e473f11f36afed13dfeb3af21eb99c7d948090355bd8838
[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" "52139604ee90fd762e473f11f36afed13dfeb3af21eb99c7d948090355bd8838", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]    Compiling asserter v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused variable: `foo`
[INFO] [stdout]   --> tests/unwrap.rs:18:25
[INFO] [stdout]    |
[INFO] [stdout] 18 |     unwrap!(foo as Some(foo));
[INFO] [stdout]    |                         ^^^ help: if this is intentional, prefix it with an underscore: `_foo`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `foo`
[INFO] [stdout]   --> tests/unwrap.rs:72:36
[INFO] [stdout]    |
[INFO] [stdout] 72 |     unwrap!(foo, Complex::Struct { foo, bar });
[INFO] [stdout]    |                                    ^^^ help: try ignoring the field: `foo: _`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `bar`
[INFO] [stdout]   --> tests/unwrap.rs:72:41
[INFO] [stdout]    |
[INFO] [stdout] 72 |     unwrap!(foo, Complex::Struct { foo, bar });
[INFO] [stdout]    |                                         ^^^ help: try ignoring the field: `bar: _`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused attribute
[INFO] [stdout]   --> tests/unwrap.rs:13:1
[INFO] [stdout]    |
[INFO] [stdout] 13 | #[should_panic]
[INFO] [stdout]    | ^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_attributes)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 4 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.70s
[INFO] running `Command { std: "docker" "inspect" "52139604ee90fd762e473f11f36afed13dfeb3af21eb99c7d948090355bd8838", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "52139604ee90fd762e473f11f36afed13dfeb3af21eb99c7d948090355bd8838", kill_on_drop: false }`
[INFO] [stdout] 52139604ee90fd762e473f11f36afed13dfeb3af21eb99c7d948090355bd8838
[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" "+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] 461fd3e5448e2e53af0705f9260b9d45922f2759b9bf55b67d0d1218fb54d5fd
[INFO] running `Command { std: "docker" "start" "-a" "461fd3e5448e2e53af0705f9260b9d45922f2759b9bf55b67d0d1218fb54d5fd", kill_on_drop: false }`
[INFO] [stderr] warning: unused variable: `foo`
[INFO] [stderr]   --> tests/unwrap.rs:18:25
[INFO] [stderr]    |
[INFO] [stderr] 18 |     unwrap!(foo as Some(foo));
[INFO] [stderr]    |                         ^^^ help: if this is intentional, prefix it with an underscore: `_foo`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `foo`
[INFO] [stderr]   --> tests/unwrap.rs:72:36
[INFO] [stderr]    |
[INFO] [stderr] 72 |     unwrap!(foo, Complex::Struct { foo, bar });
[INFO] [stderr]    |                                    ^^^ help: try ignoring the field: `foo: _`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `bar`
[INFO] [stderr]   --> tests/unwrap.rs:72:41
[INFO] [stderr]    |
[INFO] [stderr] 72 |     unwrap!(foo, Complex::Struct { foo, bar });
[INFO] [stderr]    |                                         ^^^ help: try ignoring the field: `bar: _`
[INFO] [stderr] 
[INFO] [stderr] warning: unused attribute
[INFO] [stderr]   --> tests/unwrap.rs:13:1
[INFO] [stderr]    |
[INFO] [stderr] 13 | #[should_panic]
[INFO] [stderr]    | ^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_attributes)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: 4 warnings emitted
[INFO] [stderr] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.01s
[INFO] [stderr]      Running /opt/rustwide/target/debug/deps/asserter-b0188355b289573c
[INFO] [stdout] 
[INFO] [stderr]      Running /opt/rustwide/target/debug/deps/unwrap-d140647659d486ed
[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] [stdout] 
[INFO] [stdout] running 7 tests
[INFO] [stdout] test complex_boxed ... ok
[INFO] [stdout] test complex_path ... ok
[INFO] [stdout] test complex_ref ... ok
[INFO] [stdout] test simple ... ok
[INFO] [stdout] test complex_tuple ... ok
[INFO] [stdout] test complex_struct ... ok
[INFO] [stdout] test simple_panic ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 7 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
[INFO] [stdout] 
[INFO] [stderr]    Doc-tests asserter
[INFO] [stdout] 
[INFO] [stdout] running 4 tests
[INFO] [stdout] test src/lib.rs - (line 23) ... ok
[INFO] [stdout] test src/lib.rs - (line 7) ... ok
[INFO] [stdout] test src/lib.rs - (line 40) ... ok
[INFO] [stdout] test src/lib.rs - (line 62) ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 4 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "461fd3e5448e2e53af0705f9260b9d45922f2759b9bf55b67d0d1218fb54d5fd", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "461fd3e5448e2e53af0705f9260b9d45922f2759b9bf55b67d0d1218fb54d5fd", kill_on_drop: false }`
[INFO] [stdout] 461fd3e5448e2e53af0705f9260b9d45922f2759b9bf55b67d0d1218fb54d5fd