[INFO] fetching crate mockers 0.23.0...
[INFO] checking mockers-0.23.0 against master#507271bc119683008ec719ecee48814e8ac86c65 for pr-146440
[INFO] extracting crate mockers 0.23.0 into /workspace/builds/worker-2-tc1/source
[INFO] started tweaking crates.io crate mockers 0.23.0
[INFO] removed 0 missing tests
[INFO] finished tweaking crates.io crate mockers 0.23.0
[INFO] tweaked toml for crates.io crate mockers 0.23.0 written to /workspace/builds/worker-2-tc1/source/Cargo.toml
[INFO] validating manifest of crates.io crate mockers 0.23.0 on toolchain 507271bc119683008ec719ecee48814e8ac86c65
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+507271bc119683008ec719ecee48814e8ac86c65" "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" "+507271bc119683008ec719ecee48814e8ac86c65" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]      Locking 36 packages to latest compatible versions
[INFO] [stderr]       Adding indoc-impl v0.3.6 (available: v0.3.7)
[INFO] [stderr]       Adding itertools v0.8.2 (available: v0.14.0)
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+507271bc119683008ec719ecee48814e8ac86c65" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded unindent v0.1.11
[INFO] [stderr]   Downloaded vector-map v1.1.0
[INFO] [stderr]   Downloaded mockers_derive v0.23.0
[INFO] [stderr]   Downloaded no_deadlocks v1.3.2
[INFO] [stderr]   Downloaded itertools v0.4.19
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-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:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+507271bc119683008ec719ecee48814e8ac86c65" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 7adf08911822621e1f023ed9b46f27a53fc9298768bbe677c5848370f179d233
[INFO] running `Command { std: "docker" "start" "-a" "7adf08911822621e1f023ed9b46f27a53fc9298768bbe677c5848370f179d233", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "7adf08911822621e1f023ed9b46f27a53fc9298768bbe677c5848370f179d233", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "7adf08911822621e1f023ed9b46f27a53fc9298768bbe677c5848370f179d233", kill_on_drop: false }`
[INFO] [stdout] 7adf08911822621e1f023ed9b46f27a53fc9298768bbe677c5848370f179d233
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-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:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+507271bc119683008ec719ecee48814e8ac86c65" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 7526851edb38d526c25267ac9cba608aa2459067a82011f4ec4e33328c0b19cb
[INFO] running `Command { std: "docker" "start" "-a" "7526851edb38d526c25267ac9cba608aa2459067a82011f4ec4e33328c0b19cb", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.106
[INFO] [stderr]    Compiling unindent v0.1.11
[INFO] [stderr]    Compiling itertools v0.4.19
[INFO] [stderr]     Checking send_wrapper v0.6.0
[INFO] [stderr]     Checking tokio v1.52.3
[INFO] [stderr]     Checking mockers v0.23.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: trait `MaybeDebug` is never used
[INFO] [stdout]  --> src/dbg.rs:5:7
[INFO] [stdout]   |
[INFO] [stdout] 5 | trait MaybeDebug {
[INFO] [stdout]   |       ^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: specialization is experimental
[INFO] [stdout]   --> src/dbg.rs:23:5
[INFO] [stdout]    |
[INFO] [stdout] 23 |     default fn fmt(&self, f: &mut Formatter<'_>) -> Result {
[INFO] [stdout]    |     ^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: see issue #31844 <https://github.com/rust-lang/rust/issues/31844> for more information
[INFO] [stdout]    = help: add `#![feature(specialization)]` to the crate attributes to enable
[INFO] [stdout]    = note: this compiler was built on 2026-05-17; consider upgrading it if it is out of date
[INFO] [stdout]    = warning: unstable syntax can change at any point in the future, causing a hard error!
[INFO] [stdout]    = note: for more information, see issue #154045 <https://github.com/rust-lang/rust/issues/154045>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]    Compiling quote v1.0.45
[INFO] [stderr]    Compiling syn v1.0.109
[INFO] [stderr]    Compiling syn v2.0.117
[INFO] [stderr]    Compiling proc-quote-impl v0.3.2
[INFO] [stderr]     Checking tokio-stream v0.1.18
[INFO] [stderr]     Checking tokio-test v0.4.5
[INFO] [stderr]    Compiling proc-quote v0.4.0
[INFO] [stderr]    Compiling indoc-impl v0.3.6
[INFO] [stderr]    Compiling indoc v0.3.6
[INFO] [stderr]    Compiling mockers_derive v0.23.0
[INFO] [stdout] warning: trait `A` is never used
[INFO] [stdout]  --> tests/nested.rs:6:15
[INFO] [stdout]   |
[INFO] [stdout] 6 |     pub trait A {
[INFO] [stdout]   |               ^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: impl trait in impl method signature does not match trait method signature
[INFO] [stdout]   --> tests/impl_trait.rs:23:30
[INFO] [stdout]    |
[INFO] [stdout] 23 |         #[mocked(return_type=u32)]
[INFO] [stdout]    |                              ^^^
[INFO] [stdout] 24 |         fn foo(&self) -> impl Sized;
[INFO] [stdout]    |                          ---------- return type from trait method defined here
[INFO] [stdout]    |
[INFO] [stdout]    = note: add `#[allow(refining_impl_trait)]` if it is intended for this to be part of the public API of this crate
[INFO] [stdout]    = note: we are soliciting feedback, see issue #121718 <https://github.com/rust-lang/rust/issues/121718> for more information
[INFO] [stdout]    = note: `#[warn(refining_impl_trait_internal)]` (part of `#[warn(refining_impl_trait)]`) on by default
[INFO] [stdout] help: replace the return type so that it matches the trait
[INFO] [stdout]    |
[INFO] [stdout] 23 -         #[mocked(return_type=u32)]
[INFO] [stdout] 23 +         #[mocked(return_type=impl Sized)]
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait `A` is never used
[INFO] [stdout]    --> tests/multi_trait.rs:163:15
[INFO] [stdout]     |
[INFO] [stdout] 163 |     pub trait A {
[INFO] [stdout]     |               ^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait `B` is never used
[INFO] [stdout]    --> tests/multi_trait.rs:167:15
[INFO] [stdout]     |
[INFO] [stdout] 167 |     pub trait B: A {
[INFO] [stdout]     |               ^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait `MaybeDebug` is never used
[INFO] [stdout]  --> src/dbg.rs:5:7
[INFO] [stdout]   |
[INFO] [stdout] 5 | trait MaybeDebug {
[INFO] [stdout]   |       ^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: specialization is experimental
[INFO] [stdout]   --> src/dbg.rs:23:5
[INFO] [stdout]    |
[INFO] [stdout] 23 |     default fn fmt(&self, f: &mut Formatter<'_>) -> Result {
[INFO] [stdout]    |     ^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: see issue #31844 <https://github.com/rust-lang/rust/issues/31844> for more information
[INFO] [stdout]    = help: add `#![feature(specialization)]` to the crate attributes to enable
[INFO] [stdout]    = note: this compiler was built on 2026-05-17; consider upgrading it if it is out of date
[INFO] [stdout]    = warning: unstable syntax can change at any point in the future, causing a hard error!
[INFO] [stdout]    = note: for more information, see issue #154045 <https://github.com/rust-lang/rust/issues/154045>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 8.86s
[INFO] running `Command { std: "docker" "inspect" "7526851edb38d526c25267ac9cba608aa2459067a82011f4ec4e33328c0b19cb", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "7526851edb38d526c25267ac9cba608aa2459067a82011f4ec4e33328c0b19cb", kill_on_drop: false }`
[INFO] [stdout] 7526851edb38d526c25267ac9cba608aa2459067a82011f4ec4e33328c0b19cb
