[INFO] fetching crate rudp 0.2.1...
[INFO] testing rudp-0.2.1 against beta-2025-09-21 for beta-1.91-3
[INFO] extracting crate rudp 0.2.1 into /workspace/builds/worker-5-tc2/source
[INFO] started tweaking crates.io crate rudp 0.2.1
[INFO] finished tweaking crates.io crate rudp 0.2.1
[INFO] tweaked toml for crates.io crate rudp 0.2.1 written to /workspace/builds/worker-5-tc2/source/Cargo.toml
[INFO] validating manifest of crates.io crate rudp 0.2.1 on toolchain beta-2025-09-21
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+beta-2025-09-21" "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" "+beta-2025-09-21" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]      Locking 32 packages to latest compatible versions
[INFO] [stderr]       Adding bincode v1.3.3 (available: v2.0.1)
[INFO] [stderr]       Adding derivative v1.0.4 (available: v2.2.0)
[INFO] [stderr]       Adding mio v0.6.23 (available: v1.0.4)
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+beta-2025-09-21" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr] warning: no edition set: defaulting to the 2015 edition while the latest is 2024
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2025-09-21" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 2e50830f6148111a5cab5528f87b20068b2528196a3989cc080660ac57e5537f
[INFO] running `Command { std: "docker" "start" "-a" "2e50830f6148111a5cab5528f87b20068b2528196a3989cc080660ac57e5537f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "2e50830f6148111a5cab5528f87b20068b2528196a3989cc080660ac57e5537f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "2e50830f6148111a5cab5528f87b20068b2528196a3989cc080660ac57e5537f", kill_on_drop: false }`
[INFO] [stdout] 2e50830f6148111a5cab5528f87b20068b2528196a3989cc080660ac57e5537f
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-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=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" "+beta-2025-09-21" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] e6b5b59820609312c44ad6cb46cd5a6fac92ef43d9549192326fdbe49b35a4e8
[INFO] running `Command { std: "docker" "start" "-a" "e6b5b59820609312c44ad6cb46cd5a6fac92ef43d9549192326fdbe49b35a4e8", kill_on_drop: false }`
[INFO] [stderr] warning: no edition set: defaulting to the 2015 edition while the latest is 2024
[INFO] [stderr]    Compiling derivative v1.0.4
[INFO] [stderr]    Compiling rudp v0.2.1 (/opt/rustwide/workdir)
[INFO] [stdout] warning: anonymous parameters are deprecated and will be removed in the next edition
[INFO] [stdout]   --> src/helper.rs:99:29
[INFO] [stdout]    |
[INFO] [stdout] 99 |     fn send_written(&mut self, Guarantee) -> io::Result<usize>;
[INFO] [stdout]    |                                ^^^^^^^^^ help: try naming the parameter or explicitly ignoring it: `_: Guarantee`
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2018!
[INFO] [stdout]    = note: for more information, see issue #41686 <https://github.com/rust-lang/rust/issues/41686>
[INFO] [stdout]    = note: `#[warn(anonymous_parameters)]` (part of `#[warn(rust_2018_compatibility)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/helper.rs:42:28
[INFO] [stdout]    |
[INFO] [stdout] 42 |     pub resend_predicate: Box<FnMut(u32, Duration) -> bool>,
[INFO] [stdout]    |                               ^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]    = note: for more information, see <https://doc.rust-lang.org/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout]    = note: `#[warn(bare_trait_objects)]` (part of `#[warn(rust_2021_compatibility)]`) on by default
[INFO] [stdout] help: if this is a dyn-compatible trait, use `dyn`
[INFO] [stdout]    |
[INFO] [stdout] 42 |     pub resend_predicate: Box<dyn FnMut(u32, Duration) -> bool>,
[INFO] [stdout]    |                               +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stdout]    --> src/endpoint.rs:263:17
[INFO] [stdout]     |
[INFO] [stdout] 263 |     pub fn new_set(&mut self) -> SetSender<U> {
[INFO] [stdout]     |                    ^^^^^^^^^     ^^^^^^^^^^^^ the same lifetime is hidden here
[INFO] [stdout]     |                    |
[INFO] [stdout]     |                    the lifetime is elided here
[INFO] [stdout]     |
[INFO] [stdout]     = help: the same lifetime is referred to in inconsistent ways, making the signature confusing
[INFO] [stdout]     = note: `#[warn(mismatched_lifetime_syntaxes)]` on by default
[INFO] [stdout] help: use `'_` for type paths
[INFO] [stdout]     |
[INFO] [stdout] 263 |     pub fn new_set(&mut self) -> SetSender<'_, U> {
[INFO] [stdout]     |                                            +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stdout]    --> src/endpoint.rs:300:19
[INFO] [stdout]     |
[INFO] [stdout] 300 |     fn inner_new_set(&mut self) -> SetSender<U> {
[INFO] [stdout]     |                      ^^^^^^^^^     ^^^^^^^^^^^^ the same lifetime is hidden here
[INFO] [stdout]     |                      |
[INFO] [stdout]     |                      the lifetime is elided here
[INFO] [stdout]     |
[INFO] [stdout]     = help: the same lifetime is referred to in inconsistent ways, making the signature confusing
[INFO] [stdout] help: use `'_` for type paths
[INFO] [stdout]     |
[INFO] [stdout] 300 |     fn inner_new_set(&mut self) -> SetSender<'_, U> {
[INFO] [stdout]     |                                              +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stdout]    --> src/endpoint.rs:474:19
[INFO] [stdout]     |
[INFO] [stdout] 474 |     fn new(endpoint: &mut Endpoint<U>, set_id: ModOrd) -> SetSender<U> {
[INFO] [stdout]     |                      ^^^^^^^^^^^^^^^^                     ^^^^^^^^^^^^ the same lifetime is hidden here
[INFO] [stdout]     |                      |
[INFO] [stdout]     |                      the lifetime is elided here
[INFO] [stdout]     |
[INFO] [stdout]     = help: the same lifetime is referred to in inconsistent ways, making the signature confusing
[INFO] [stdout] help: use `'_` for type paths
[INFO] [stdout]     |
[INFO] [stdout] 474 |     fn new(endpoint: &mut Endpoint<U>, set_id: ModOrd) -> SetSender<'_, U> {
[INFO] [stdout]     |                                                                     +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 1.91s
[INFO] running `Command { std: "docker" "inspect" "e6b5b59820609312c44ad6cb46cd5a6fac92ef43d9549192326fdbe49b35a4e8", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "e6b5b59820609312c44ad6cb46cd5a6fac92ef43d9549192326fdbe49b35a4e8", kill_on_drop: false }`
[INFO] [stdout] e6b5b59820609312c44ad6cb46cd5a6fac92ef43d9549192326fdbe49b35a4e8
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-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=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" "+beta-2025-09-21" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 34b02cd86b265dd305d8dd644ed5a7aff43636d186c0ed01d95b5abe11a4ec62
[INFO] running `Command { std: "docker" "start" "-a" "34b02cd86b265dd305d8dd644ed5a7aff43636d186c0ed01d95b5abe11a4ec62", kill_on_drop: false }`
[INFO] [stderr] warning: no edition set: defaulting to the 2015 edition while the latest is 2024
[INFO] [stderr]    Compiling libc v0.2.176
[INFO] [stderr]    Compiling proc-macro2 v1.0.101
[INFO] [stderr]    Compiling serde_core v1.0.228
[INFO] [stderr]    Compiling quote v1.0.41
[INFO] [stderr]    Compiling serde v1.0.228
[INFO] [stdout] warning: anonymous parameters are deprecated and will be removed in the next edition
[INFO] [stdout]   --> src/helper.rs:99:29
[INFO] [stdout]    |
[INFO] [stdout] 99 |     fn send_written(&mut self, Guarantee) -> io::Result<usize>;
[INFO] [stdout]    |                                ^^^^^^^^^ help: try naming the parameter or explicitly ignoring it: `_: Guarantee`
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2018!
[INFO] [stdout]    = note: for more information, see issue #41686 <https://github.com/rust-lang/rust/issues/41686>
[INFO] [stdout]    = note: `#[warn(anonymous_parameters)]` (part of `#[warn(rust_2018_compatibility)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/helper.rs:42:28
[INFO] [stdout]    |
[INFO] [stdout] 42 |     pub resend_predicate: Box<FnMut(u32, Duration) -> bool>,
[INFO] [stdout]    |                               ^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]    = note: for more information, see <https://doc.rust-lang.org/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout]    = note: `#[warn(bare_trait_objects)]` (part of `#[warn(rust_2021_compatibility)]`) on by default
[INFO] [stdout] help: if this is a dyn-compatible trait, use `dyn`
[INFO] [stdout]    |
[INFO] [stdout] 42 |     pub resend_predicate: Box<dyn FnMut(u32, Duration) -> bool>,
[INFO] [stdout]    |                               +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stdout]    --> src/endpoint.rs:263:17
[INFO] [stdout]     |
[INFO] [stdout] 263 |     pub fn new_set(&mut self) -> SetSender<U> {
[INFO] [stdout]     |                    ^^^^^^^^^     ^^^^^^^^^^^^ the same lifetime is hidden here
[INFO] [stdout]     |                    |
[INFO] [stdout]     |                    the lifetime is elided here
[INFO] [stdout]     |
[INFO] [stdout]     = help: the same lifetime is referred to in inconsistent ways, making the signature confusing
[INFO] [stdout]     = note: `#[warn(mismatched_lifetime_syntaxes)]` on by default
[INFO] [stdout] help: use `'_` for type paths
[INFO] [stdout]     |
[INFO] [stdout] 263 |     pub fn new_set(&mut self) -> SetSender<'_, U> {
[INFO] [stdout]     |                                            +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stdout]    --> src/endpoint.rs:300:19
[INFO] [stdout]     |
[INFO] [stdout] 300 |     fn inner_new_set(&mut self) -> SetSender<U> {
[INFO] [stdout]     |                      ^^^^^^^^^     ^^^^^^^^^^^^ the same lifetime is hidden here
[INFO] [stdout]     |                      |
[INFO] [stdout]     |                      the lifetime is elided here
[INFO] [stdout]     |
[INFO] [stdout]     = help: the same lifetime is referred to in inconsistent ways, making the signature confusing
[INFO] [stdout] help: use `'_` for type paths
[INFO] [stdout]     |
[INFO] [stdout] 300 |     fn inner_new_set(&mut self) -> SetSender<'_, U> {
[INFO] [stdout]     |                                              +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stdout]    --> src/endpoint.rs:474:19
[INFO] [stdout]     |
[INFO] [stdout] 474 |     fn new(endpoint: &mut Endpoint<U>, set_id: ModOrd) -> SetSender<U> {
[INFO] [stdout]     |                      ^^^^^^^^^^^^^^^^                     ^^^^^^^^^^^^ the same lifetime is hidden here
[INFO] [stdout]     |                      |
[INFO] [stdout]     |                      the lifetime is elided here
[INFO] [stdout]     |
[INFO] [stdout]     = help: the same lifetime is referred to in inconsistent ways, making the signature confusing
[INFO] [stdout] help: use `'_` for type paths
[INFO] [stdout]     |
[INFO] [stdout] 474 |     fn new(endpoint: &mut Endpoint<U>, set_id: ModOrd) -> SetSender<'_, U> {
[INFO] [stdout]     |                                                                     +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]    Compiling syn v2.0.106
[INFO] [stderr]    Compiling iovec v0.1.4
[INFO] [stderr]    Compiling net2 v0.2.39
[INFO] [stderr]    Compiling mio v0.6.23
[INFO] [stderr]    Compiling serde_derive v1.0.228
[INFO] [stderr]    Compiling bincode v1.3.3
[INFO] [stderr]    Compiling rudp v0.2.1 (/opt/rustwide/workdir)
[INFO] [stdout] error[E0432]: unresolved import `rand`
[INFO] [stdout]   --> src/tests.rs:19:5
[INFO] [stdout]    |
[INFO] [stdout] 19 | use rand::{thread_rng, Rng};
[INFO] [stdout]    |     ^^^^ use of unresolved module or unlinked crate `rand`
[INFO] [stdout]    |
[INFO] [stdout] help: if you wanted to use a crate named `rand`, use `cargo add rand` to add it to your `Cargo.toml` and import it in your code
[INFO] [stdout]   --> src/lib.rs:2:1
[INFO] [stdout]    |
[INFO] [stdout]  2 + extern crate rand;
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: anonymous parameters are deprecated and will be removed in the next edition
[INFO] [stdout]   --> src/helper.rs:99:29
[INFO] [stdout]    |
[INFO] [stdout] 99 |     fn send_written(&mut self, Guarantee) -> io::Result<usize>;
[INFO] [stdout]    |                                ^^^^^^^^^ help: try naming the parameter or explicitly ignoring it: `_: Guarantee`
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2018!
[INFO] [stdout]    = note: for more information, see issue #41686 <https://github.com/rust-lang/rust/issues/41686>
[INFO] [stdout]    = note: `#[warn(anonymous_parameters)]` (part of `#[warn(rust_2018_compatibility)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/helper.rs:42:28
[INFO] [stdout]    |
[INFO] [stdout] 42 |     pub resend_predicate: Box<FnMut(u32, Duration) -> bool>,
[INFO] [stdout]    |                               ^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]    = note: for more information, see <https://doc.rust-lang.org/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout]    = note: `#[warn(bare_trait_objects)]` (part of `#[warn(rust_2021_compatibility)]`) on by default
[INFO] [stdout] help: if this is a dyn-compatible trait, use `dyn`
[INFO] [stdout]    |
[INFO] [stdout] 42 |     pub resend_predicate: Box<dyn FnMut(u32, Duration) -> bool>,
[INFO] [stdout]    |                               +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0432`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `rudp` (lib test) due to 1 previous error; 2 warnings emitted
[INFO] running `Command { std: "docker" "inspect" "34b02cd86b265dd305d8dd644ed5a7aff43636d186c0ed01d95b5abe11a4ec62", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "34b02cd86b265dd305d8dd644ed5a7aff43636d186c0ed01d95b5abe11a4ec62", kill_on_drop: false }`
[INFO] [stdout] 34b02cd86b265dd305d8dd644ed5a7aff43636d186c0ed01d95b5abe11a4ec62
