[INFO] fetching crate rtos 0.0.1...
[INFO] testing rtos-0.0.1 against 1.90.0 for beta-1.91-3
[INFO] extracting crate rtos 0.0.1 into /workspace/builds/worker-3-tc1/source
[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 /workspace/builds/worker-3-tc1/source/Cargo.toml
[INFO] validating manifest of crates.io crate rtos 0.0.1 on toolchain 1.90.0
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1.90.0" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1.90.0" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1.90.0" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc1/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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+1.90.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] dabe899c3c16d211117d752f9af59160acbc2528df23a0b92d9dc0acbd1a40c4
[INFO] running `Command { std: "docker" "start" "-a" "dabe899c3c16d211117d752f9af59160acbc2528df23a0b92d9dc0acbd1a40c4", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "dabe899c3c16d211117d752f9af59160acbc2528df23a0b92d9dc0acbd1a40c4", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "dabe899c3c16d211117d752f9af59160acbc2528df23a0b92d9dc0acbd1a40c4", kill_on_drop: false }`
[INFO] [stdout] dabe899c3c16d211117d752f9af59160acbc2528df23a0b92d9dc0acbd1a40c4
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc1/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" "RUSTDOCFLAGS=--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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+1.90.0" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 87e8be7dabc29d1e60c06d9edbdb4a528d11319d1ed6525251164dece30150da
[INFO] running `Command { std: "docker" "start" "-a" "87e8be7dabc29d1e60c06d9edbdb4a528d11319d1ed6525251164dece30150da", kill_on_drop: false }`
[INFO] [stderr]    Compiling rtos v0.0.1 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused variable: `entrypoint`
[INFO] [stdout]   --> src/task.rs:31:25
[INFO] [stdout]    |
[INFO] [stdout] 31 |     pub fn spawn(&self, entrypoint: impl FnOnce() -> ()) -> TaskHandle {
[INFO] [stdout]    |                         ^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_entrypoint`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `idle_hook`
[INFO] [stdout]  --> src/lib.rs:5:14
[INFO] [stdout]   |
[INFO] [stdout] 5 | pub fn start(idle_hook: impl FnMut()) {}
[INFO] [stdout]   |              ^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_idle_hook`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: enum `Priority` is never used
[INFO] [stdout]  --> src/task.rs:1:6
[INFO] [stdout]   |
[INFO] [stdout] 1 | enum Priority {
[INFO] [stdout]   |      ^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `TaskHandle` is never constructed
[INFO] [stdout]   --> src/task.rs:10:12
[INFO] [stdout]    |
[INFO] [stdout] 10 | pub struct TaskHandle {}
[INFO] [stdout]    |            ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Builder` is never constructed
[INFO] [stdout]   --> src/task.rs:12:12
[INFO] [stdout]    |
[INFO] [stdout] 12 | pub struct Builder {
[INFO] [stdout]    |            ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated items `new` and `spawn` are never used
[INFO] [stdout]   --> src/task.rs:27:12
[INFO] [stdout]    |
[INFO] [stdout] 26 | impl Builder {
[INFO] [stdout]    | ------------ associated items in this implementation
[INFO] [stdout] 27 |     pub fn new() -> Self {
[INFO] [stdout]    |            ^^^
[INFO] [stdout] ...
[INFO] [stdout] 31 |     pub fn spawn(&self, entrypoint: impl FnOnce() -> ()) -> TaskHandle {
[INFO] [stdout]    |            ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `spawn` is never used
[INFO] [stdout]   --> src/task.rs:36:8
[INFO] [stdout]    |
[INFO] [stdout] 36 | pub fn spawn(entrypoint: impl FnOnce() -> ()) -> TaskHandle {
[INFO] [stdout]    |        ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 0.11s
[INFO] running `Command { std: "docker" "inspect" "87e8be7dabc29d1e60c06d9edbdb4a528d11319d1ed6525251164dece30150da", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "87e8be7dabc29d1e60c06d9edbdb4a528d11319d1ed6525251164dece30150da", kill_on_drop: false }`
[INFO] [stdout] 87e8be7dabc29d1e60c06d9edbdb4a528d11319d1ed6525251164dece30150da
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc1/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" "RUSTDOCFLAGS=--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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+1.90.0" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 3cc60324d34efa511d2ccf91673bb593d8fc56c9de197064517737c841f3cbf2
[INFO] running `Command { std: "docker" "start" "-a" "3cc60324d34efa511d2ccf91673bb593d8fc56c9de197064517737c841f3cbf2", kill_on_drop: false }`
[INFO] [stdout] warning: unused variable: `entrypoint`
[INFO] [stdout]   --> src/task.rs:31:25
[INFO] [stdout]    |
[INFO] [stdout] 31 |     pub fn spawn(&self, entrypoint: impl FnOnce() -> ()) -> TaskHandle {
[INFO] [stdout]    |                         ^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_entrypoint`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `idle_hook`
[INFO] [stdout]  --> src/lib.rs:5:14
[INFO] [stdout]   |
[INFO] [stdout] 5 | pub fn start(idle_hook: impl FnMut()) {}
[INFO] [stdout]   |              ^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_idle_hook`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: enum `Priority` is never used
[INFO] [stdout]  --> src/task.rs:1:6
[INFO] [stdout]   |
[INFO] [stdout] 1 | enum Priority {
[INFO] [stdout]   |      ^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `TaskHandle` is never constructed
[INFO] [stdout]   --> src/task.rs:10:12
[INFO] [stdout]    |
[INFO] [stdout] 10 | pub struct TaskHandle {}
[INFO] [stdout]    |            ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]    Compiling rtos v0.0.1 (/opt/rustwide/workdir)
[INFO] [stdout] warning: struct `Builder` is never constructed
[INFO] [stdout]   --> src/task.rs:12:12
[INFO] [stdout]    |
[INFO] [stdout] 12 | pub struct Builder {
[INFO] [stdout]    |            ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated items `new` and `spawn` are never used
[INFO] [stdout]   --> src/task.rs:27:12
[INFO] [stdout]    |
[INFO] [stdout] 26 | impl Builder {
[INFO] [stdout]    | ------------ associated items in this implementation
[INFO] [stdout] 27 |     pub fn new() -> Self {
[INFO] [stdout]    |            ^^^
[INFO] [stdout] ...
[INFO] [stdout] 31 |     pub fn spawn(&self, entrypoint: impl FnOnce() -> ()) -> TaskHandle {
[INFO] [stdout]    |            ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `spawn` is never used
[INFO] [stdout]   --> src/task.rs:36:8
[INFO] [stdout]    |
[INFO] [stdout] 36 | pub fn spawn(entrypoint: impl FnOnce() -> ()) -> TaskHandle {
[INFO] [stdout]    |        ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `entrypoint`
[INFO] [stdout]   --> src/task.rs:31:25
[INFO] [stdout]    |
[INFO] [stdout] 31 |     pub fn spawn(&self, entrypoint: impl FnOnce() -> ()) -> TaskHandle {
[INFO] [stdout]    |                         ^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_entrypoint`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `idle_hook`
[INFO] [stdout]  --> src/lib.rs:5:14
[INFO] [stdout]   |
[INFO] [stdout] 5 | pub fn start(idle_hook: impl FnMut()) {}
[INFO] [stdout]   |              ^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_idle_hook`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: enum `Priority` is never used
[INFO] [stdout]  --> src/task.rs:1:6
[INFO] [stdout]   |
[INFO] [stdout] 1 | enum Priority {
[INFO] [stdout]   |      ^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `TaskHandle` is never constructed
[INFO] [stdout]   --> src/task.rs:10:12
[INFO] [stdout]    |
[INFO] [stdout] 10 | pub struct TaskHandle {}
[INFO] [stdout]    |            ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Builder` is never constructed
[INFO] [stdout]   --> src/task.rs:12:12
[INFO] [stdout]    |
[INFO] [stdout] 12 | pub struct Builder {
[INFO] [stdout]    |            ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated items `new` and `spawn` are never used
[INFO] [stdout]   --> src/task.rs:27:12
[INFO] [stdout]    |
[INFO] [stdout] 26 | impl Builder {
[INFO] [stdout]    | ------------ associated items in this implementation
[INFO] [stdout] 27 |     pub fn new() -> Self {
[INFO] [stdout]    |            ^^^
[INFO] [stdout] ...
[INFO] [stdout] 31 |     pub fn spawn(&self, entrypoint: impl FnOnce() -> ()) -> TaskHandle {
[INFO] [stdout]    |            ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `spawn` is never used
[INFO] [stdout]   --> src/task.rs:36:8
[INFO] [stdout]    |
[INFO] [stdout] 36 | pub fn spawn(entrypoint: impl FnOnce() -> ()) -> TaskHandle {
[INFO] [stdout]    |        ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.28s
[INFO] running `Command { std: "docker" "inspect" "3cc60324d34efa511d2ccf91673bb593d8fc56c9de197064517737c841f3cbf2", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "3cc60324d34efa511d2ccf91673bb593d8fc56c9de197064517737c841f3cbf2", kill_on_drop: false }`
[INFO] [stdout] 3cc60324d34efa511d2ccf91673bb593d8fc56c9de197064517737c841f3cbf2
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc1/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" "RUSTDOCFLAGS=--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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+1.90.0" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] ac1051d165cbeba4f6a92ba45be9fb910ab9d1932dad66d6f926057a9732355c
[INFO] running `Command { std: "docker" "start" "-a" "ac1051d165cbeba4f6a92ba45be9fb910ab9d1932dad66d6f926057a9732355c", kill_on_drop: false }`
[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: if this is intentional, prefix it with an underscore: `_entrypoint`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stderr] 
[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: if this is intentional, prefix it with an underscore: `_idle_hook`
[INFO] [stderr] 
[INFO] [stderr] warning: enum `Priority` is never used
[INFO] [stderr]  --> src/task.rs:1:6
[INFO] [stderr]   |
[INFO] [stderr] 1 | enum Priority {
[INFO] [stderr]   |      ^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: struct `TaskHandle` is never constructed
[INFO] [stderr]   --> src/task.rs:10:12
[INFO] [stderr]    |
[INFO] [stderr] 10 | pub struct TaskHandle {}
[INFO] [stderr]    |            ^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: struct `Builder` is never constructed
[INFO] [stderr]   --> src/task.rs:12:12
[INFO] [stderr]    |
[INFO] [stderr] 12 | pub struct Builder {
[INFO] [stderr]    |            ^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: associated items `new` and `spawn` are never used
[INFO] [stderr]   --> src/task.rs:27:12
[INFO] [stderr]    |
[INFO] [stderr] 26 | impl Builder {
[INFO] [stderr]    | ------------ associated items in this implementation
[INFO] [stderr] 27 |     pub fn new() -> Self {
[INFO] [stderr]    |            ^^^
[INFO] [stderr] ...
[INFO] [stderr] 31 |     pub fn spawn(&self, entrypoint: impl FnOnce() -> ()) -> TaskHandle {
[INFO] [stderr]    |            ^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function `spawn` is never used
[INFO] [stderr]   --> src/task.rs:36:8
[INFO] [stderr]    |
[INFO] [stderr] 36 | pub fn spawn(entrypoint: impl FnOnce() -> ()) -> TaskHandle {
[INFO] [stderr]    |        ^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: `rtos` (lib) generated 7 warnings
[INFO] [stderr] warning: `rtos` (lib test) generated 7 warnings (7 duplicates)
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.03s
[INFO] [stderr]      Running unittests src/lib.rs (/opt/rustwide/target/debug/deps/rtos-ff1967601c17a3fd)
[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]    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; finished in 0.00s
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "ac1051d165cbeba4f6a92ba45be9fb910ab9d1932dad66d6f926057a9732355c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "ac1051d165cbeba4f6a92ba45be9fb910ab9d1932dad66d6f926057a9732355c", kill_on_drop: false }`
[INFO] [stdout] ac1051d165cbeba4f6a92ba45be9fb910ab9d1932dad66d6f926057a9732355c