[INFO] fetching crate boc 0.0.1...
[INFO] testing boc-0.0.1 against master#c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38 for pr-146098-7
[INFO] extracting crate boc 0.0.1 into /workspace/builds/worker-1-tc1/source
[INFO] started tweaking crates.io crate boc 0.0.1
[INFO] removed 0 missing examples
[INFO] removed 0 missing tests
[INFO] finished tweaking crates.io crate boc 0.0.1
[INFO] tweaked toml for crates.io crate boc 0.0.1 written to /workspace/builds/worker-1-tc1/source/Cargo.toml
[INFO] validating manifest of crates.io crate boc 0.0.1 on toolchain c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate crates.io crate boc 0.0.1 already has a lockfile, it will not be regenerated
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded serde_derive v1.0.203
[INFO] [stderr]   Downloaded colorchoice v1.0.1
[INFO] [stderr]   Downloaded anstyle-parse v0.2.4
[INFO] [stderr]   Downloaded serde_spanned v0.6.6
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[INFO] [stderr]   Downloaded trybuild v1.0.96
[INFO] [stderr]   Downloaded syn v2.0.66
[INFO] [stderr]   Downloaded proc-macro2 v1.0.85
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[INFO] [stderr]   Downloaded serde v1.0.203
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[INFO] [stderr]   Downloaded boc-sys v0.0.1
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-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@sha256:4848fb76d95f26979359cc7e45710b1dbc8f3acb7aeedee7c460d7702230f228" "/opt/rustwide/cargo-home/bin/cargo" "+c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
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[INFO] running `Command { std: "docker" "start" "-a" "b472cc757e1e42a1cee30b1742ba252b8f30a1421bc2ee8bce6244bc13f8d129", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "b472cc757e1e42a1cee30b1742ba252b8f30a1421bc2ee8bce6244bc13f8d129", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "b472cc757e1e42a1cee30b1742ba252b8f30a1421bc2ee8bce6244bc13f8d129", kill_on_drop: false }`
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[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-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=forbid" "-e" "RUSTDOCFLAGS=--cap-lints=forbid" "-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@sha256:4848fb76d95f26979359cc7e45710b1dbc8f3acb7aeedee7c460d7702230f228" "/opt/rustwide/cargo-home/bin/cargo" "+c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 80fa1d237af25c21cf4d26c2041146024c7516d56663529e8ed3ca795d21c97a
[INFO] running `Command { std: "docker" "start" "-a" "80fa1d237af25c21cf4d26c2041146024c7516d56663529e8ed3ca795d21c97a", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.153
[INFO] [stderr]    Compiling cc v1.0.83
[INFO] [stderr]    Compiling cmake v0.1.50
[INFO] [stderr]    Compiling boc-sys v0.0.1
[INFO] [stderr]    Compiling boc v0.0.1 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 18.14s
[INFO] running `Command { std: "docker" "inspect" "80fa1d237af25c21cf4d26c2041146024c7516d56663529e8ed3ca795d21c97a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "80fa1d237af25c21cf4d26c2041146024c7516d56663529e8ed3ca795d21c97a", kill_on_drop: false }`
[INFO] [stdout] 80fa1d237af25c21cf4d26c2041146024c7516d56663529e8ed3ca795d21c97a
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-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=forbid" "-e" "RUSTDOCFLAGS=--cap-lints=forbid" "-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@sha256:4848fb76d95f26979359cc7e45710b1dbc8f3acb7aeedee7c460d7702230f228" "/opt/rustwide/cargo-home/bin/cargo" "+c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 77a1e0566aff109e1dbf46e319f4a957127eff5775c5f65f81f5e3db76396fc5
[INFO] running `Command { std: "docker" "start" "-a" "77a1e0566aff109e1dbf46e319f4a957127eff5775c5f65f81f5e3db76396fc5", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.85
[INFO] [stderr]    Compiling unicode-ident v1.0.12
[INFO] [stderr]    Compiling serde v1.0.203
[INFO] [stderr]    Compiling libc v0.2.153
[INFO] [stderr]    Compiling crossbeam-utils v0.8.20
[INFO] [stderr]    Compiling autocfg v1.3.0
[INFO] [stderr]    Compiling serde_json v1.0.117
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[INFO] [stderr]    Compiling rayon-core v1.12.1
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[INFO] [stderr]    Compiling is_terminal_polyfill v1.70.0
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[INFO] [stderr]    Compiling regex-syntax v0.8.3
[INFO] [stderr]    Compiling winnow v0.6.13
[INFO] [stderr]    Compiling anstyle-parse v0.2.4
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[INFO] [stderr]    Compiling termcolor v1.4.1
[INFO] [stderr]    Compiling once_cell v1.19.0
[INFO] [stderr]    Compiling walkdir v2.5.0
[INFO] [stderr]    Compiling cc v1.0.83
[INFO] [stderr]    Compiling num-traits v0.2.19
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[INFO] [stderr]    Compiling is-terminal v0.4.12
[INFO] [stderr]    Compiling quote v1.0.36
[INFO] [stderr]    Compiling oorandom v11.1.3
[INFO] [stderr]    Compiling anes v0.1.6
[INFO] [stderr]    Compiling crossbeam-epoch v0.9.18
[INFO] [stderr]    Compiling crossbeam-deque v0.8.5
[INFO] [stderr]    Compiling syn v2.0.66
[INFO] [stderr]    Compiling cmake v0.1.50
[INFO] [stderr]    Compiling rayon v1.10.0
[INFO] [stderr]    Compiling regex-automata v0.4.6
[INFO] [stderr]    Compiling plotters v0.3.6
[INFO] [stderr]    Compiling criterion-plot v0.5.0
[INFO] [stderr]    Compiling boc-sys v0.0.1
[INFO] [stderr]    Compiling serde_derive v1.0.203
[INFO] [stderr]    Compiling clap v4.5.4
[INFO] [stderr]    Compiling regex v1.10.4
[INFO] [stderr]    Compiling toml_datetime v0.6.6
[INFO] [stderr]    Compiling serde_spanned v0.6.6
[INFO] [stderr]    Compiling ciborium v0.2.2
[INFO] [stderr]    Compiling toml_edit v0.22.14
[INFO] [stderr]    Compiling tinytemplate v1.2.1
[INFO] [stderr]    Compiling criterion v0.5.1
[INFO] [stderr]    Compiling toml v0.8.14
[INFO] [stderr]    Compiling boc v0.0.1 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused variable: `ptr_1`
[INFO] [stdout]  --> examples/ub.rs:9:17
[INFO] [stdout]   |
[INFO] [stdout] 9 |             let ptr_1: &mut i32 = c1.deref_mut();
[INFO] [stdout]   |                 ^^^^^ help: if this is intentional, prefix it with an underscore: `_ptr_1`
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `ptr_2`
[INFO] [stdout]   --> examples/ub.rs:10:17
[INFO] [stdout]    |
[INFO] [stdout] 10 |             let ptr_2: &mut i32 = c2.deref_mut();
[INFO] [stdout]    |                 ^^^^^ help: if this is intentional, prefix it with an underscore: `_ptr_2`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0433]: failed to resolve: use of unresolved module or unlinked crate `stdx`
[INFO] [stdout]  --> tests/scheduler-stress.rs:7:9
[INFO] [stdout]   |
[INFO] [stdout] 7 |         stdx::thread::scope(|s| {
[INFO] [stdout]   |         ^^^^ use of unresolved module or unlinked crate `stdx`
[INFO] [stdout]   |
[INFO] [stdout] help: there is a crate or module with a similar name
[INFO] [stdout]   |
[INFO] [stdout] 7 -         stdx::thread::scope(|s| {
[INFO] [stdout] 7 +         std::thread::scope(|s| {
[INFO] [stdout]   |
[INFO] [stdout] help: consider importing this module
[INFO] [stdout]   |
[INFO] [stdout] 1 + use std::thread;
[INFO] [stdout]   |
[INFO] [stdout] help: if you import `thread`, refer to it directly
[INFO] [stdout]   |
[INFO] [stdout] 7 -         stdx::thread::scope(|s| {
[INFO] [stdout] 7 +         thread::scope(|s| {
[INFO] [stdout]   |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0432]: unresolved import `stdx`
[INFO] [stdout]   --> src/lambdas.rs:58:9
[INFO] [stdout]    |
[INFO] [stdout] 58 |     use stdx::SetOnDrop;
[INFO] [stdout]    |         ^^^^ use of unresolved module or unlinked crate `stdx`
[INFO] [stdout]    |
[INFO] [stdout] help: there is a crate or module with a similar name
[INFO] [stdout]    |
[INFO] [stdout] 58 -     use stdx::SetOnDrop;
[INFO] [stdout] 58 +     use std::SetOnDrop;
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0432]: unresolved import `stdx`
[INFO] [stdout]    --> src/when.rs:119:9
[INFO] [stdout]     |
[INFO] [stdout] 119 |     use stdx::SetOnDrop;
[INFO] [stdout]     |         ^^^^ use of unresolved module or unlinked crate `stdx`
[INFO] [stdout]     |
[INFO] [stdout] help: there is a crate or module with a similar name
[INFO] [stdout]     |
[INFO] [stdout] 119 -     use stdx::SetOnDrop;
[INFO] [stdout] 119 +     use std::SetOnDrop;
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0433]: failed to resolve: use of unresolved module or unlinked crate `stdx`
[INFO] [stdout]  --> tests/cown-new-stress.rs:6:9
[INFO] [stdout]   |
[INFO] [stdout] 6 |         stdx::thread::scope(|s| {
[INFO] [stdout]   |         ^^^^ use of unresolved module or unlinked crate `stdx`
[INFO] [stdout]   |
[INFO] [stdout] help: there is a crate or module with a similar name
[INFO] [stdout]   |
[INFO] [stdout] 6 -         stdx::thread::scope(|s| {
[INFO] [stdout] 6 +         std::thread::scope(|s| {
[INFO] [stdout]   |
[INFO] [stdout] help: consider importing this module
[INFO] [stdout]   |
[INFO] [stdout] 1 + use std::thread;
[INFO] [stdout]   |
[INFO] [stdout] help: if you import `thread`, refer to it directly
[INFO] [stdout]   |
[INFO] [stdout] 6 -         stdx::thread::scope(|s| {
[INFO] [stdout] 6 +         thread::scope(|s| {
[INFO] [stdout]   |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0282]: type annotations needed
[INFO] [stdout]  --> tests/cown-new-stress.rs:6:30
[INFO] [stdout]   |
[INFO] [stdout] 6 |         stdx::thread::scope(|s| {
[INFO] [stdout]   |                              ^
[INFO] [stdout] 7 |             for _ in 0..10 {
[INFO] [stdout] 8 |                 s.spawn(|| {
[INFO] [stdout]   |                 - type must be known at this point
[INFO] [stdout]   |
[INFO] [stdout] help: consider giving this closure parameter an explicit type
[INFO] [stdout]   |
[INFO] [stdout] 6 |         stdx::thread::scope(|s: /* Type */| {
[INFO] [stdout]   |                               ++++++++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0282]: type annotations needed
[INFO] [stdout]  --> tests/scheduler-stress.rs:7:30
[INFO] [stdout]   |
[INFO] [stdout] 7 |         stdx::thread::scope(|s| {
[INFO] [stdout]   |                              ^
[INFO] [stdout] 8 |             for _ in 0..10 {
[INFO] [stdout] 9 |                 s.spawn(|| {
[INFO] [stdout]   |                 - type must be known at this point
[INFO] [stdout]   |
[INFO] [stdout] help: consider giving this closure parameter an explicit type
[INFO] [stdout]   |
[INFO] [stdout] 7 |         stdx::thread::scope(|s: /* Type */| {
[INFO] [stdout]   |                               ++++++++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] Some errors have detailed explanations: E0282, E0433.
[INFO] [stdout] 
[INFO] [stdout] For more information about an error, try `rustc --explain E0282`.
[INFO] [stdout] 
[INFO] [stdout] Some errors have detailed explanations: E0282, E0433.
[INFO] [stdout] 
[INFO] [stdout] For more information about an error, try `rustc --explain E0282`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `boc` (test "cown-new-stress") due to 2 previous errors
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stderr] error: could not compile `boc` (test "scheduler-stress") due to 2 previous errors
[INFO] [stdout] error[E0433]: failed to resolve: use of unresolved module or unlinked crate `stdx`
[INFO] [stdout]   --> src/scheduler.rs:87:9
[INFO] [stdout]    |
[INFO] [stdout] 87 |         stdx::thread::scope(|s| {
[INFO] [stdout]    |         ^^^^ use of unresolved module or unlinked crate `stdx`
[INFO] [stdout]    |
[INFO] [stdout] help: there is a crate or module with a similar name
[INFO] [stdout]    |
[INFO] [stdout] 87 -         stdx::thread::scope(|s| {
[INFO] [stdout] 87 +         std::thread::scope(|s| {
[INFO] [stdout]    |
[INFO] [stdout] help: consider importing this module
[INFO] [stdout]    |
[INFO] [stdout] 78 +     use std::thread;
[INFO] [stdout]    |
[INFO] [stdout] help: if you import `thread`, refer to it directly
[INFO] [stdout]    |
[INFO] [stdout] 87 -         stdx::thread::scope(|s| {
[INFO] [stdout] 87 +         thread::scope(|s| {
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0433]: failed to resolve: use of unresolved module or unlinked crate `stdx`
[INFO] [stdout]    --> src/scheduler.rs:101:9
[INFO] [stdout]     |
[INFO] [stdout] 101 |         stdx::thread::scope(|s| {
[INFO] [stdout]     |         ^^^^ use of unresolved module or unlinked crate `stdx`
[INFO] [stdout]     |
[INFO] [stdout] help: there is a crate or module with a similar name
[INFO] [stdout]     |
[INFO] [stdout] 101 -         stdx::thread::scope(|s| {
[INFO] [stdout] 101 +         std::thread::scope(|s| {
[INFO] [stdout]     |
[INFO] [stdout] help: consider importing this module
[INFO] [stdout]     |
[INFO] [stdout]  78 +     use std::thread;
[INFO] [stdout]     |
[INFO] [stdout] help: if you import `thread`, refer to it directly
[INFO] [stdout]     |
[INFO] [stdout] 101 -         stdx::thread::scope(|s| {
[INFO] [stdout] 101 +         thread::scope(|s| {
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0433]: failed to resolve: use of unresolved module or unlinked crate `stdx`
[INFO] [stdout]   --> tests/cown-new-stress-2.rs:25:9
[INFO] [stdout]    |
[INFO] [stdout] 25 |         stdx::thread::scope(|s| {
[INFO] [stdout]    |         ^^^^ use of unresolved module or unlinked crate `stdx`
[INFO] [stdout]    |
[INFO] [stdout] help: there is a crate or module with a similar name
[INFO] [stdout]    |
[INFO] [stdout] 25 -         stdx::thread::scope(|s| {
[INFO] [stdout] 25 +         std::thread::scope(|s| {
[INFO] [stdout]    |
[INFO] [stdout] help: consider importing this module
[INFO] [stdout]    |
[INFO] [stdout]  1 + use std::thread;
[INFO] [stdout]    |
[INFO] [stdout] help: if you import `thread`, refer to it directly
[INFO] [stdout]    |
[INFO] [stdout] 25 -         stdx::thread::scope(|s| {
[INFO] [stdout] 25 +         thread::scope(|s| {
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0433]: failed to resolve: use of unresolved module or unlinked crate `stdx`
[INFO] [stdout]   --> tests/cown-new-stress-2.rs:55:27
[INFO] [stdout]    |
[INFO] [stdout] 55 | fn create_sched_noise(s: &stdx::thread::Scope) {
[INFO] [stdout]    |                           ^^^^ use of unresolved module or unlinked crate `stdx`
[INFO] [stdout]    |
[INFO] [stdout] help: there is a crate or module with a similar name
[INFO] [stdout]    |
[INFO] [stdout] 55 - fn create_sched_noise(s: &stdx::thread::Scope) {
[INFO] [stdout] 55 + fn create_sched_noise(s: &std::thread::Scope) {
[INFO] [stdout]    |
[INFO] [stdout] help: consider importing this module
[INFO] [stdout]    |
[INFO] [stdout]  1 + use std::thread;
[INFO] [stdout]    |
[INFO] [stdout] help: if you import `thread`, refer to it directly
[INFO] [stdout]    |
[INFO] [stdout] 55 - fn create_sched_noise(s: &stdx::thread::Scope) {
[INFO] [stdout] 55 + fn create_sched_noise(s: &thread::Scope) {
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unexpected `cfg` condition name: `slow_tests`
[INFO] [stdout]  --> tests/cown-new-stress-2.rs:7:7
[INFO] [stdout]   |
[INFO] [stdout] 7 | #[cfg(slow_tests)]
[INFO] [stdout]   |       ^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = help: expected names are: `docsrs`, `feature`, and `test` and 31 more
[INFO] [stdout]   = help: consider using a Cargo feature instead
[INFO] [stdout]   = help: or consider adding in `Cargo.toml` the `check-cfg` lint config for the lint:
[INFO] [stdout]            [lints.rust]
[INFO] [stdout]            unexpected_cfgs = { level = "warn", check-cfg = ['cfg(slow_tests)'] }
[INFO] [stdout]   = help: or consider adding `println!("cargo::rustc-check-cfg=cfg(slow_tests)");` to the top of the `build.rs`
[INFO] [stdout]   = note: see <https://doc.rust-lang.org/nightly/rustc/check-cfg/cargo-specifics.html> for more information about checking conditional configuration
[INFO] [stdout]   = note: `#[warn(unexpected_cfgs)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unexpected `cfg` condition name: `slow_tests`
[INFO] [stdout]  --> tests/cown-new-stress-2.rs:9:11
[INFO] [stdout]   |
[INFO] [stdout] 9 | #[cfg(not(slow_tests))]
[INFO] [stdout]   |           ^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = help: consider using a Cargo feature instead
[INFO] [stdout]   = help: or consider adding in `Cargo.toml` the `check-cfg` lint config for the lint:
[INFO] [stdout]            [lints.rust]
[INFO] [stdout]            unexpected_cfgs = { level = "warn", check-cfg = ['cfg(slow_tests)'] }
[INFO] [stdout]   = help: or consider adding `println!("cargo::rustc-check-cfg=cfg(slow_tests)");` to the top of the `build.rs`
[INFO] [stdout]   = note: see <https://doc.rust-lang.org/nightly/rustc/check-cfg/cargo-specifics.html> for more information about checking conditional configuration
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0433`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `boc` (test "cown-new-stress-2") due to 2 previous errors; 2 warnings emitted
[INFO] [stdout] error[E0282]: type annotations needed
[INFO] [stdout]   --> src/lambdas.rs:94:25
[INFO] [stdout]    |
[INFO] [stdout] 94 |             assert_eq!(*check.lock().unwrap(), false);
[INFO] [stdout]    |                         ^^^^^ cannot infer type
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0282]: type annotations needed
[INFO] [stdout]   --> src/scheduler.rs:87:30
[INFO] [stdout]    |
[INFO] [stdout] 87 |         stdx::thread::scope(|s| {
[INFO] [stdout]    |                              ^
[INFO] [stdout] 88 |             for _ in 0..10 {
[INFO] [stdout] 89 |                 s.spawn(|| {
[INFO] [stdout]    |                 - type must be known at this point
[INFO] [stdout]    |
[INFO] [stdout] help: consider giving this closure parameter an explicit type
[INFO] [stdout]    |
[INFO] [stdout] 87 |         stdx::thread::scope(|s: /* Type */| {
[INFO] [stdout]    |                               ++++++++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0282]: type annotations needed
[INFO] [stdout]    --> src/scheduler.rs:101:30
[INFO] [stdout]     |
[INFO] [stdout] 101 |         stdx::thread::scope(|s| {
[INFO] [stdout]     |                              ^
[INFO] [stdout] 102 |             for _ in 0..10 {
[INFO] [stdout] 103 |                 s.spawn(|| {
[INFO] [stdout]     |                 - type must be known at this point
[INFO] [stdout]     |
[INFO] [stdout] help: consider giving this closure parameter an explicit type
[INFO] [stdout]     |
[INFO] [stdout] 101 |         stdx::thread::scope(|s: /* Type */| {
[INFO] [stdout]     |                               ++++++++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0282]: type annotations needed
[INFO] [stdout]    --> src/when.rs:215:17
[INFO] [stdout]     |
[INFO] [stdout] 215 |                 assert_eq!(&*v, &[]);
[INFO] [stdout]     |                 ^^^^^^^^^^^^^^^^^^^^ cannot infer type
[INFO] [stdout]     |
[INFO] [stdout]     = note: this error originates in the macro `assert_eq` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0283]: type annotations needed
[INFO] [stdout]    --> src/when.rs:215:17
[INFO] [stdout]     |
[INFO] [stdout] 215 |                 assert_eq!(&*v, &[]);
[INFO] [stdout]     |                 ^^^^^^^^^^^^^^^^^^^^ cannot infer type
[INFO] [stdout]     |
[INFO] [stdout]     = note: multiple `impl`s satisfying `i32: PartialEq<_>` found in the following crates: `core`, `serde_json`:
[INFO] [stdout]             - impl PartialEq for i32;
[INFO] [stdout]             - impl PartialEq<serde_json::Value> for i32;
[INFO] [stdout]     = note: required for `Vec<i32>` to implement `PartialEq<[_; 0]>`
[INFO] [stdout]     = note: 1 redundant requirement hidden
[INFO] [stdout]     = note: required for `&Vec<i32>` to implement `PartialEq<&[_; 0]>`
[INFO] [stdout]     = note: this error originates in the macro `assert_eq` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0282]: type annotations needed
[INFO] [stdout]    --> src/when.rs:281:21
[INFO] [stdout]     |
[INFO] [stdout] 281 |         assert_eq!(*dropstate.lock().unwrap(), false);
[INFO] [stdout]     |                     ^^^^^^^^^ cannot infer type
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0282]: type annotations needed
[INFO] [stdout]    --> src/when.rs:302:35
[INFO] [stdout]     |
[INFO] [stdout] 302 |         let is_dropped = move || *dropstate.lock().unwrap();
[INFO] [stdout]     |                                   ^^^^^^^^^ cannot infer type
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] Some errors have detailed explanations: E0282, E0283, E0432, E0433.
[INFO] [stdout] 
[INFO] [stdout] For more information about an error, try `rustc --explain E0282`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `boc` (lib test) due to 11 previous errors
[INFO] running `Command { std: "docker" "inspect" "77a1e0566aff109e1dbf46e319f4a957127eff5775c5f65f81f5e3db76396fc5", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "77a1e0566aff109e1dbf46e319f4a957127eff5775c5f65f81f5e3db76396fc5", kill_on_drop: false }`
[INFO] [stdout] 77a1e0566aff109e1dbf46e319f4a957127eff5775c5f65f81f5e3db76396fc5