[INFO] crate rtos 0.0.1 is already in cache
[INFO] testing rtos-0.0.1 against 1.38.0 for beta-1.39-1
[INFO] extracting crate rtos 0.0.1 into work/builds/worker-8/source
[INFO] validating manifest of crates.io crate rtos 0.0.1 on toolchain 1.38.0
[INFO] running `"/big/crater/work/cargo-home/bin/cargo" "+1.38.0" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started tweaking crates.io crate rtos 0.0.1
[INFO] finished tweaking crates.io crate rtos 0.0.1
[INFO] tweaked toml for crates.io crate rtos 0.0.1 written to work/builds/worker-8/source/Cargo.toml
[INFO] running `"/big/crater/work/cargo-home/bin/cargo" "+1.38.0" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"`
[INFO] running `"/big/crater/work/cargo-home/bin/cargo" "+1.38.0" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"docker" "create" "-v" "/big/crater/work/builds/worker-8/target:/opt/rustwide/target:rw,Z" "-v" "/big/crater/work/builds/worker-8/source:/opt/rustwide/workdir:ro,Z" "-v" "/big/crater/work/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/big/crater/work/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "MAP_USER_ID=1000" "-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" "--network" "none" "rustops/crates-build-env" "/opt/rustwide/cargo-home/bin/cargo" "+1.38.0" "build" "--frozen"`
[INFO] [stdout] 560f708985fcfe904b63cbe440c2c31d78d4baa607cec75738974c810021ea5b
[INFO] running `"docker" "start" "-a" "560f708985fcfe904b63cbe440c2c31d78d4baa607cec75738974c810021ea5b"`
[INFO] [stderr]    Compiling rtos v0.0.1 (/opt/rustwide/workdir)
[INFO] [stderr] warning: unused variable: `idle_hook`
[INFO] [stderr]  --> src/lib.rs:5:14
[INFO] [stderr]   |
[INFO] [stderr] 5 | pub fn start(idle_hook: impl FnMut()) {}
[INFO] [stderr]   |              ^^^^^^^^^ help: consider prefixing with an underscore: `_idle_hook`
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(unused_variables)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `entrypoint`
[INFO] [stderr]   --> src/task.rs:31:25
[INFO] [stderr]    |
[INFO] [stderr] 31 |     pub fn spawn(&self, entrypoint: impl FnOnce() -> ()) -> TaskHandle {
[INFO] [stderr]    |                         ^^^^^^^^^^ help: consider prefixing with an underscore: `_entrypoint`
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `Low`
[INFO] [stderr]  --> src/task.rs:2:5
[INFO] [stderr]   |
[INFO] [stderr] 2 |     Low,
[INFO] [stderr]   |     ^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `BelowNormal`
[INFO] [stderr]  --> src/task.rs:3:5
[INFO] [stderr]   |
[INFO] [stderr] 3 |     BelowNormal,
[INFO] [stderr]   |     ^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `AboveNormal`
[INFO] [stderr]  --> src/task.rs:5:5
[INFO] [stderr]   |
[INFO] [stderr] 5 |     AboveNormal,
[INFO] [stderr]   |     ^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `High`
[INFO] [stderr]  --> src/task.rs:6:5
[INFO] [stderr]   |
[INFO] [stderr] 6 |     High,
[INFO] [stderr]   |     ^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `Realtime`
[INFO] [stderr]  --> src/task.rs:7:5
[INFO] [stderr]   |
[INFO] [stderr] 7 |     Realtime,
[INFO] [stderr]   |     ^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: struct is never constructed: `TaskHandle`
[INFO] [stderr]   --> src/task.rs:10:1
[INFO] [stderr]    |
[INFO] [stderr] 10 | pub struct TaskHandle {}
[INFO] [stderr]    | ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: struct is never constructed: `Builder`
[INFO] [stderr]   --> src/task.rs:12:1
[INFO] [stderr]    |
[INFO] [stderr] 12 | pub struct Builder {
[INFO] [stderr]    | ^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `new`
[INFO] [stderr]   --> src/task.rs:27:5
[INFO] [stderr]    |
[INFO] [stderr] 27 |     pub fn new() -> Self {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `spawn`
[INFO] [stderr]   --> src/task.rs:31:5
[INFO] [stderr]    |
[INFO] [stderr] 31 |     pub fn spawn(&self, entrypoint: impl FnOnce() -> ()) -> TaskHandle {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `spawn`
[INFO] [stderr]   --> src/task.rs:36:1
[INFO] [stderr]    |
[INFO] [stderr] 36 | pub fn spawn(entrypoint: impl FnOnce() -> ()) -> TaskHandle {
[INFO] [stderr]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.10s
[INFO] running `"docker" "inspect" "560f708985fcfe904b63cbe440c2c31d78d4baa607cec75738974c810021ea5b"`
[INFO] running `"docker" "rm" "-f" "560f708985fcfe904b63cbe440c2c31d78d4baa607cec75738974c810021ea5b"`
[INFO] [stdout] 560f708985fcfe904b63cbe440c2c31d78d4baa607cec75738974c810021ea5b
[INFO] running `"docker" "create" "-v" "/big/crater/work/builds/worker-8/target:/opt/rustwide/target:rw,Z" "-v" "/big/crater/work/builds/worker-8/source:/opt/rustwide/workdir:ro,Z" "-v" "/big/crater/work/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/big/crater/work/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "MAP_USER_ID=1000" "-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" "--network" "none" "rustops/crates-build-env" "/opt/rustwide/cargo-home/bin/cargo" "+1.38.0" "test" "--frozen" "--no-run"`
[INFO] [stdout] 9cafd4eed11da551d0a466cafd7409fdb3565f13f32f390a3c5fa9b72a700171
[INFO] running `"docker" "start" "-a" "9cafd4eed11da551d0a466cafd7409fdb3565f13f32f390a3c5fa9b72a700171"`
[INFO] [stderr]    Compiling rtos v0.0.1 (/opt/rustwide/workdir)
[INFO] [stderr] warning: unused variable: `idle_hook`
[INFO] [stderr]  --> src/lib.rs:5:14
[INFO] [stderr]   |
[INFO] [stderr] 5 | pub fn start(idle_hook: impl FnMut()) {}
[INFO] [stderr]   |              ^^^^^^^^^ help: consider prefixing with an underscore: `_idle_hook`
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(unused_variables)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `entrypoint`
[INFO] [stderr]   --> src/task.rs:31:25
[INFO] [stderr]    |
[INFO] [stderr] 31 |     pub fn spawn(&self, entrypoint: impl FnOnce() -> ()) -> TaskHandle {
[INFO] [stderr]    |                         ^^^^^^^^^^ help: consider prefixing with an underscore: `_entrypoint`
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `Low`
[INFO] [stderr]  --> src/task.rs:2:5
[INFO] [stderr]   |
[INFO] [stderr] 2 |     Low,
[INFO] [stderr]   |     ^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `BelowNormal`
[INFO] [stderr]  --> src/task.rs:3:5
[INFO] [stderr]   |
[INFO] [stderr] 3 |     BelowNormal,
[INFO] [stderr]   |     ^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `AboveNormal`
[INFO] [stderr]  --> src/task.rs:5:5
[INFO] [stderr]   |
[INFO] [stderr] 5 |     AboveNormal,
[INFO] [stderr]   |     ^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `High`
[INFO] [stderr]  --> src/task.rs:6:5
[INFO] [stderr]   |
[INFO] [stderr] 6 |     High,
[INFO] [stderr]   |     ^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `Realtime`
[INFO] [stderr]  --> src/task.rs:7:5
[INFO] [stderr]   |
[INFO] [stderr] 7 |     Realtime,
[INFO] [stderr]   |     ^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: struct is never constructed: `TaskHandle`
[INFO] [stderr]   --> src/task.rs:10:1
[INFO] [stderr]    |
[INFO] [stderr] 10 | pub struct TaskHandle {}
[INFO] [stderr]    | ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: struct is never constructed: `Builder`
[INFO] [stderr]   --> src/task.rs:12:1
[INFO] [stderr]    |
[INFO] [stderr] 12 | pub struct Builder {
[INFO] [stderr]    | ^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `new`
[INFO] [stderr]   --> src/task.rs:27:5
[INFO] [stderr]    |
[INFO] [stderr] 27 |     pub fn new() -> Self {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `spawn`
[INFO] [stderr]   --> src/task.rs:31:5
[INFO] [stderr]    |
[INFO] [stderr] 31 |     pub fn spawn(&self, entrypoint: impl FnOnce() -> ()) -> TaskHandle {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `spawn`
[INFO] [stderr]   --> src/task.rs:36:1
[INFO] [stderr]    |
[INFO] [stderr] 36 | pub fn spawn(entrypoint: impl FnOnce() -> ()) -> TaskHandle {
[INFO] [stderr]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.30s
[INFO] running `"docker" "inspect" "9cafd4eed11da551d0a466cafd7409fdb3565f13f32f390a3c5fa9b72a700171"`
[INFO] running `"docker" "rm" "-f" "9cafd4eed11da551d0a466cafd7409fdb3565f13f32f390a3c5fa9b72a700171"`
[INFO] [stdout] 9cafd4eed11da551d0a466cafd7409fdb3565f13f32f390a3c5fa9b72a700171
[INFO] running `"docker" "create" "-v" "/big/crater/work/builds/worker-8/target:/opt/rustwide/target:rw,Z" "-v" "/big/crater/work/builds/worker-8/source:/opt/rustwide/workdir:ro,Z" "-v" "/big/crater/work/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/big/crater/work/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "MAP_USER_ID=1000" "-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" "--network" "none" "rustops/crates-build-env" "/opt/rustwide/cargo-home/bin/cargo" "+1.38.0" "test" "--frozen"`
[INFO] [stdout] a0589ebace59fed0f8267b79da609a32da8af6d294859729750e1459c017e1da
[INFO] running `"docker" "start" "-a" "a0589ebace59fed0f8267b79da609a32da8af6d294859729750e1459c017e1da"`
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.30s
[INFO] [stderr]      Running /opt/rustwide/target/debug/deps/rtos-982e5cdf62e03a06
[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] [stderr]    Doc-tests rtos
[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 `"docker" "inspect" "a0589ebace59fed0f8267b79da609a32da8af6d294859729750e1459c017e1da"`
[INFO] running `"docker" "rm" "-f" "a0589ebace59fed0f8267b79da609a32da8af6d294859729750e1459c017e1da"`
[INFO] [stdout] a0589ebace59fed0f8267b79da609a32da8af6d294859729750e1459c017e1da