[INFO] fetching crate mockers 0.23.0...
[INFO] checking mockers-0.23.0 against try#0611f7de057c584b8771102fde7aed6c70c71d3b for pr-146440
[INFO] extracting crate mockers 0.23.0 into /workspace/builds/worker-2-tc2/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-tc2/source/Cargo.toml
[INFO] validating manifest of crates.io crate mockers 0.23.0 on toolchain 0611f7de057c584b8771102fde7aed6c70c71d3b
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+0611f7de057c584b8771102fde7aed6c70c71d3b" "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" "+0611f7de057c584b8771102fde7aed6c70c71d3b" "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" "+0611f7de057c584b8771102fde7aed6c70c71d3b" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-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:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+0611f7de057c584b8771102fde7aed6c70c71d3b" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 1ded51e3d57afcb9ebc37d54fb8a45eb96c20f9008bb2a7415aae7547357a019
[INFO] running `Command { std: "docker" "start" "-a" "1ded51e3d57afcb9ebc37d54fb8a45eb96c20f9008bb2a7415aae7547357a019", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "1ded51e3d57afcb9ebc37d54fb8a45eb96c20f9008bb2a7415aae7547357a019", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "1ded51e3d57afcb9ebc37d54fb8a45eb96c20f9008bb2a7415aae7547357a019", kill_on_drop: false }`
[INFO] [stdout] 1ded51e3d57afcb9ebc37d54fb8a45eb96c20f9008bb2a7415aae7547357a019
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-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:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+0611f7de057c584b8771102fde7aed6c70c71d3b" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 5b901cded10b2abe1e1b32f6a52170563420eb90e2be993a9da1e4938625c828
[INFO] running `Command { std: "docker" "start" "-a" "5b901cded10b2abe1e1b32f6a52170563420eb90e2be993a9da1e4938625c828", 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] error: struct `ReactionSend0` is never constructed
[INFO] [stdout]    --> src/lib.rs:719:16
[INFO] [stdout]     |
[INFO] [stdout] 719 |     Reaction0, ReactionSend0,
[INFO] [stdout]     |                ^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this `pub` struct has private fields, no public constructor, and is not otherwise reachable through the external API, so consider providing a public constructor or removing it
[INFO] [stdout]     = note: `#[deny(unused_unconstructable_pub_struct)]` (part of `#[deny(unused)]`) on by default
[INFO] [stdout]     = note: this error originates in the macro `define_all` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: struct `ExpectationTimesSend0` is never constructed
[INFO] [stdout]    --> src/lib.rs:723:24
[INFO] [stdout]     |
[INFO] [stdout] 723 |     ExpectationTimes0, ExpectationTimesSend0) {
[INFO] [stdout]     |                        ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this `pub` struct has private fields, no public constructor, and is not otherwise reachable through the external API, so consider providing a public constructor or removing it
[INFO] [stdout]     = note: this error originates in the macro `define_all` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: struct `ReactionSend1` is never constructed
[INFO] [stdout]    --> src/lib.rs:727:16
[INFO] [stdout]     |
[INFO] [stdout] 727 |     Reaction1, ReactionSend1,
[INFO] [stdout]     |                ^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this `pub` struct has private fields, no public constructor, and is not otherwise reachable through the external API, so consider providing a public constructor or removing it
[INFO] [stdout]     = note: this error originates in the macro `define_all` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: struct `ExpectationTimesSend1` is never constructed
[INFO] [stdout]    --> src/lib.rs:731:24
[INFO] [stdout]     |
[INFO] [stdout] 731 |     ExpectationTimes1, ExpectationTimesSend1) {
[INFO] [stdout]     |                        ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this `pub` struct has private fields, no public constructor, and is not otherwise reachable through the external API, so consider providing a public constructor or removing it
[INFO] [stdout]     = note: this error originates in the macro `define_all` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: struct `ReactionSend2` is never constructed
[INFO] [stdout]    --> src/lib.rs:736:16
[INFO] [stdout]     |
[INFO] [stdout] 736 |     Reaction2, ReactionSend2,
[INFO] [stdout]     |                ^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this `pub` struct has private fields, no public constructor, and is not otherwise reachable through the external API, so consider providing a public constructor or removing it
[INFO] [stdout]     = note: this error originates in the macro `define_all` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: struct `ExpectationTimesSend2` is never constructed
[INFO] [stdout]    --> src/lib.rs:740:24
[INFO] [stdout]     |
[INFO] [stdout] 740 |     ExpectationTimes2, ExpectationTimesSend2) {
[INFO] [stdout]     |                        ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this `pub` struct has private fields, no public constructor, and is not otherwise reachable through the external API, so consider providing a public constructor or removing it
[INFO] [stdout]     = note: this error originates in the macro `define_all` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: struct `ReactionSend3` is never constructed
[INFO] [stdout]    --> src/lib.rs:745:16
[INFO] [stdout]     |
[INFO] [stdout] 745 |     Reaction3, ReactionSend3,
[INFO] [stdout]     |                ^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this `pub` struct has private fields, no public constructor, and is not otherwise reachable through the external API, so consider providing a public constructor or removing it
[INFO] [stdout]     = note: this error originates in the macro `define_all` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: struct `ExpectationTimesSend3` is never constructed
[INFO] [stdout]    --> src/lib.rs:749:24
[INFO] [stdout]     |
[INFO] [stdout] 749 |     ExpectationTimes3, ExpectationTimesSend3) {
[INFO] [stdout]     |                        ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this `pub` struct has private fields, no public constructor, and is not otherwise reachable through the external API, so consider providing a public constructor or removing it
[INFO] [stdout]     = note: this error originates in the macro `define_all` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: struct `ReactionSend4` is never constructed
[INFO] [stdout]    --> src/lib.rs:754:16
[INFO] [stdout]     |
[INFO] [stdout] 754 |     Reaction4, ReactionSend4,
[INFO] [stdout]     |                ^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this `pub` struct has private fields, no public constructor, and is not otherwise reachable through the external API, so consider providing a public constructor or removing it
[INFO] [stdout]     = note: this error originates in the macro `define_all` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: struct `ExpectationTimesSend4` is never constructed
[INFO] [stdout]    --> src/lib.rs:758:24
[INFO] [stdout]     |
[INFO] [stdout] 758 |     ExpectationTimes4, ExpectationTimesSend4) {
[INFO] [stdout]     |                        ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this `pub` struct has private fields, no public constructor, and is not otherwise reachable through the external API, so consider providing a public constructor or removing it
[INFO] [stdout]     = note: this error originates in the macro `define_all` (in Nightly builds, run with -Z macro-backtrace for more info)
[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 2026-05-18; 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] error: could not compile `mockers` (lib) due to 10 previous errors; 2 warnings emitted
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] running `Command { std: "docker" "inspect" "5b901cded10b2abe1e1b32f6a52170563420eb90e2be993a9da1e4938625c828", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "5b901cded10b2abe1e1b32f6a52170563420eb90e2be993a9da1e4938625c828", kill_on_drop: false }`
[INFO] [stdout] 5b901cded10b2abe1e1b32f6a52170563420eb90e2be993a9da1e4938625c828
