[INFO] fetching crate crossbus 0.0.6-a...
[INFO] checking crossbus-0.0.6-a against try#264a7c4a1c917c83d13895a31231f9d93c7b67e1 for pr-132289
[INFO] extracting crate crossbus 0.0.6-a into /workspace/builds/worker-3-tc2/source
[INFO] validating manifest of crates.io crate crossbus 0.0.6-a on toolchain 264a7c4a1c917c83d13895a31231f9d93c7b67e1
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+264a7c4a1c917c83d13895a31231f9d93c7b67e1" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate crossbus 0.0.6-a
[INFO] removed 0 missing examples
[INFO] finished tweaking crates.io crate crossbus 0.0.6-a
[INFO] tweaked toml for crates.io crate crossbus 0.0.6-a written to /workspace/builds/worker-3-tc2/source/Cargo.toml
[INFO] crate crates.io crate crossbus 0.0.6-a 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" "+264a7c4a1c917c83d13895a31231f9d93c7b67e1" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc2/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@sha256:4a844ea9eb2546a2d2c7022eacef16ef2e8229c7fbb2c7d4d55a9ceca922f72d" "/opt/rustwide/cargo-home/bin/cargo" "+264a7c4a1c917c83d13895a31231f9d93c7b67e1" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 5a6ac91131ba36890923e9656bd0b2c866049e62b299723bf1c81ae99777006d
[INFO] running `Command { std: "docker" "start" "-a" "5a6ac91131ba36890923e9656bd0b2c866049e62b299723bf1c81ae99777006d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "5a6ac91131ba36890923e9656bd0b2c866049e62b299723bf1c81ae99777006d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "5a6ac91131ba36890923e9656bd0b2c866049e62b299723bf1c81ae99777006d", kill_on_drop: false }`
[INFO] [stdout] 5a6ac91131ba36890923e9656bd0b2c866049e62b299723bf1c81ae99777006d
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc2/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@sha256:4a844ea9eb2546a2d2c7022eacef16ef2e8229c7fbb2c7d4d55a9ceca922f72d" "/opt/rustwide/cargo-home/bin/cargo" "+264a7c4a1c917c83d13895a31231f9d93c7b67e1" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 415dcb70dcf13263183e63829e85cf244c3927d7e341250974b4816e1dea494a
[INFO] running `Command { std: "docker" "start" "-a" "415dcb70dcf13263183e63829e85cf244c3927d7e341250974b4816e1dea494a", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.139
[INFO] [stderr]    Compiling proc-macro2 v1.0.50
[INFO] [stderr]    Compiling quote v1.0.23
[INFO] [stderr]    Compiling unicode-ident v1.0.6
[INFO] [stderr]    Compiling syn v1.0.107
[INFO] [stderr]    Compiling futures-core v0.3.26
[INFO] [stderr]    Compiling log v0.4.17
[INFO] [stderr]    Compiling futures-channel v0.3.26
[INFO] [stderr]    Compiling futures-task v0.3.26
[INFO] [stderr]     Checking futures-sink v0.3.26
[INFO] [stderr]    Compiling futures-util v0.3.26
[INFO] [stderr]    Compiling parking_lot_core v0.9.7
[INFO] [stderr]    Compiling time-core v0.1.0
[INFO] [stderr]     Checking smallvec v1.10.0
[INFO] [stderr]     Checking futures-io v0.3.26
[INFO] [stderr]    Compiling time-macros v0.2.8
[INFO] [stdout] error[E0635]: unknown feature `proc_macro_span_shrink`
[INFO] [stdout]   --> /opt/rustwide/cargo-home/registry/src/index.crates.io-6f17d22bba15001f/proc-macro2-1.0.50/src/lib.rs:92:30
[INFO] [stdout]    |
[INFO] [stdout] 92 |     feature(proc_macro_span, proc_macro_span_shrink)
[INFO] [stdout]    |                              ^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Checking lock_api v0.4.9
[INFO] [stderr]    Compiling tokio v1.26.0
[INFO] [stderr]     Checking itoa v1.0.6
[INFO] [stderr]     Checking bytes v1.4.0
[INFO] [stderr]     Checking crossbus v0.0.6-a (/opt/rustwide/workdir)
[INFO] [stdout] For more information about this error, try `rustc --explain E0635`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `proc-macro2` (lib) due to 1 previous error
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stdout] warning: creating a shared reference to mutable static is discouraged
[INFO] [stdout]    --> src/reactor.rs:142:18
[INFO] [stdout]     |
[INFO] [stdout] 142 |         unsafe { &REACTOR }
[INFO] [stdout]     |                  ^^^^^^^^ shared reference to mutable static
[INFO] [stdout]     |
[INFO] [stdout]     = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2024/static-mut-references.html>
[INFO] [stdout]     = note: shared references to mutable statics are dangerous; it's undefined behavior if the static is mutated or if a mutable reference is created for it while the shared reference lives
[INFO] [stdout]     = note: `#[warn(static_mut_refs)]` on by default
[INFO] [stdout] help: use `&raw const` instead to create a raw pointer
[INFO] [stdout]     |
[INFO] [stdout] 142 |         unsafe { &raw const REACTOR }
[INFO] [stdout]     |                  ~~~~~~~~~~
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: creating a mutable reference to mutable static is discouraged
[INFO] [stdout]    --> src/reactor.rs:160:18
[INFO] [stdout]     |
[INFO] [stdout] 160 |         unsafe { &mut REACTOR }.await
[INFO] [stdout]     |                  ^^^^^^^^^^^^ mutable reference to mutable static
[INFO] [stdout]     |
[INFO] [stdout]     = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2024/static-mut-references.html>
[INFO] [stdout]     = note: mutable references to mutable statics are dangerous; it's undefined behavior if any other pointer to the static is used or if any other reference is created for the static while the mutable reference lives
[INFO] [stdout] help: use `&raw mut` instead to create a raw pointer
[INFO] [stdout]     |
[INFO] [stdout] 160 |         unsafe { &raw mut REACTOR }.await
[INFO] [stdout]     |                  ~~~~~~~~
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: creating a shared reference to mutable static is discouraged
[INFO] [stdout]    --> src/reactor.rs:175:18
[INFO] [stdout]     |
[INFO] [stdout] 175 |         unsafe { REACTOR.inner.len() }
[INFO] [stdout]     |                  ^^^^^^^^^^^^^^^^^^^ shared reference to mutable static
[INFO] [stdout]     |
[INFO] [stdout]     = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2024/static-mut-references.html>
[INFO] [stdout]     = note: shared references to mutable statics are dangerous; it's undefined behavior if the static is mutated or if a mutable reference is created for it while the shared reference lives
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: calls to `std::mem::drop` with a reference instead of an owned value does nothing
[INFO] [stdout]    --> src/reactor.rs:252:9
[INFO] [stdout]     |
[INFO] [stdout] 252 |         drop(inner);
[INFO] [stdout]     |         ^^^^^-----^
[INFO] [stdout]     |              |
[INFO] [stdout]     |              argument has type `&mut Vec<ReactorPair>`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(dropping_references)]` on by default
[INFO] [stdout] help: use `let _ = ...` to ignore the expression or result
[INFO] [stdout]     |
[INFO] [stdout] 252 -         drop(inner);
[INFO] [stdout] 252 +         let _ = inner;
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: creating a shared reference to mutable static is discouraged
[INFO] [stdout]   --> src/register.rs:51:18
[INFO] [stdout]    |
[INFO] [stdout] 51 |         unsafe { &REGISTER }
[INFO] [stdout]    |                  ^^^^^^^^^ shared reference to mutable static
[INFO] [stdout]    |
[INFO] [stdout]    = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2024/static-mut-references.html>
[INFO] [stdout]    = note: shared references to mutable statics are dangerous; it's undefined behavior if the static is mutated or if a mutable reference is created for it while the shared reference lives
[INFO] [stdout] help: use `&raw const` instead to create a raw pointer
[INFO] [stdout]    |
[INFO] [stdout] 51 |         unsafe { &raw const REGISTER }
[INFO] [stdout]    |                  ~~~~~~~~~~
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: creating a mutable reference to mutable static is discouraged
[INFO] [stdout]   --> src/register.rs:65:13
[INFO] [stdout]    |
[INFO] [stdout] 65 |             REGISTER.inner.push(item);
[INFO] [stdout]    |             ^^^^^^^^^^^^^^^^^^^^^^^^^ mutable reference to mutable static
[INFO] [stdout]    |
[INFO] [stdout]    = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2024/static-mut-references.html>
[INFO] [stdout]    = note: mutable references to mutable statics are dangerous; it's undefined behavior if any other pointer to the static is used or if any other reference is created for the static while the mutable reference lives
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: creating a mutable reference to mutable static is discouraged
[INFO] [stdout]   --> src/register.rs:97:30
[INFO] [stdout]    |
[INFO] [stdout] 97 |         let inner = unsafe { &mut REGISTER.inner };
[INFO] [stdout]    |                              ^^^^^^^^^^^^^^^^^^^ mutable reference to mutable static
[INFO] [stdout]    |
[INFO] [stdout]    = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2024/static-mut-references.html>
[INFO] [stdout]    = note: mutable references to mutable statics are dangerous; it's undefined behavior if any other pointer to the static is used or if any other reference is created for the static while the mutable reference lives
[INFO] [stdout] help: use `&raw mut` instead to create a raw pointer
[INFO] [stdout]    |
[INFO] [stdout] 97 |         let inner = unsafe { &raw mut REGISTER.inner };
[INFO] [stdout]    |                              ~~~~~~~~
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: creating a shared reference to mutable static is discouraged
[INFO] [stdout]    --> src/register.rs:114:18
[INFO] [stdout]     |
[INFO] [stdout] 114 |         unsafe { &REGISTER.inner }.len()
[INFO] [stdout]     |                  ^^^^^^^^^^^^^^^ shared reference to mutable static
[INFO] [stdout]     |
[INFO] [stdout]     = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2024/static-mut-references.html>
[INFO] [stdout]     = note: shared references to mutable statics are dangerous; it's undefined behavior if the static is mutated or if a mutable reference is created for it while the shared reference lives
[INFO] [stdout] help: use `&raw const` instead to create a raw pointer
[INFO] [stdout]     |
[INFO] [stdout] 114 |         unsafe { &raw const REGISTER.inner }.len()
[INFO] [stdout]     |                  ~~~~~~~~~~
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: creating a shared reference to mutable static is discouraged
[INFO] [stdout]    --> src/register.rs:122:18
[INFO] [stdout]     |
[INFO] [stdout] 122 |         unsafe { &REGISTER.inner }
[INFO] [stdout]     |                  ^^^^^^^^^^^^^^^ shared reference to mutable static
[INFO] [stdout]     |
[INFO] [stdout]     = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2024/static-mut-references.html>
[INFO] [stdout]     = note: shared references to mutable statics are dangerous; it's undefined behavior if the static is mutated or if a mutable reference is created for it while the shared reference lives
[INFO] [stdout] help: use `&raw const` instead to create a raw pointer
[INFO] [stdout]     |
[INFO] [stdout] 122 |         unsafe { &raw const REGISTER.inner }
[INFO] [stdout]     |                  ~~~~~~~~~~
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "415dcb70dcf13263183e63829e85cf244c3927d7e341250974b4816e1dea494a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "415dcb70dcf13263183e63829e85cf244c3927d7e341250974b4816e1dea494a", kill_on_drop: false }`
[INFO] [stdout] 415dcb70dcf13263183e63829e85cf244c3927d7e341250974b4816e1dea494a
