[INFO] fetching crate smallvec 2.0.0-alpha.12...
[INFO] checking smallvec-2.0.0-alpha.12 against try#012cd62c9add58ab3910e44c137d87db3ab70f61 for pr-155915
[INFO] extracting crate smallvec 2.0.0-alpha.12 into /workspace/builds/worker-5-tc2/source
[INFO] started tweaking crates.io crate smallvec 2.0.0-alpha.12
[INFO] removed 0 missing tests
[INFO] finished tweaking crates.io crate smallvec 2.0.0-alpha.12
[INFO] tweaked toml for crates.io crate smallvec 2.0.0-alpha.12 written to /workspace/builds/worker-5-tc2/source/Cargo.toml
[INFO] validating manifest of crates.io crate smallvec 2.0.0-alpha.12 on toolchain 012cd62c9add58ab3910e44c137d87db3ab70f61
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+012cd62c9add58ab3910e44c137d87db3ab70f61" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate crates.io crate smallvec 2.0.0-alpha.12 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" "+012cd62c9add58ab3910e44c137d87db3ab70f61" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Blocking waiting for file lock on package cache
[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:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+012cd62c9add58ab3910e44c137d87db3ab70f61" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 4a24dda8e8a60a4a2075be0affbef75eb7f8545d67d950c8c2d53da958cda5a6
[INFO] running `Command { std: "docker" "start" "-a" "4a24dda8e8a60a4a2075be0affbef75eb7f8545d67d950c8c2d53da958cda5a6", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "4a24dda8e8a60a4a2075be0affbef75eb7f8545d67d950c8c2d53da958cda5a6", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "4a24dda8e8a60a4a2075be0affbef75eb7f8545d67d950c8c2d53da958cda5a6", kill_on_drop: false }`
[INFO] [stdout] 4a24dda8e8a60a4a2075be0affbef75eb7f8545d67d950c8c2d53da958cda5a6
[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=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" "+012cd62c9add58ab3910e44c137d87db3ab70f61" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] cc31d2602f967a549a0db83f80d235df3dcfa45d7913d50f5d9fbb16bd477e03
[INFO] running `Command { std: "docker" "start" "-a" "cc31d2602f967a549a0db83f80d235df3dcfa45d7913d50f5d9fbb16bd477e03", kill_on_drop: false }`
[INFO] [stderr]     Checking smallvec v2.0.0-alpha.12 (/opt/rustwide/workdir)
[INFO] [stderr]     Checking bincode v1.3.3
[INFO] [stdout] warning: unnecessary `unsafe` block
[INFO] [stdout]    --> src/lib.rs:210:10
[INFO] [stdout]     |
[INFO] [stdout] 210 |         (unsafe { addr_of!(self.inline) }) as *const T
[INFO] [stdout]     |          ^^^^^^ unnecessary `unsafe` block
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_unsafe)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary `unsafe` block
[INFO] [stdout]    --> src/lib.rs:216:10
[INFO] [stdout]     |
[INFO] [stdout] 216 |         (unsafe { addr_of_mut!(self.inline) }) as *mut T
[INFO] [stdout]     |          ^^^^^^ unnecessary `unsafe` block
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: specialization is experimental
[INFO] [stdout]     --> src/lib.rs:2061:9
[INFO] [stdout]      |
[INFO] [stdout] 2061 |         default unsafe fn spec_from_elem(elem: T, n: usize) -> Self {
[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 2026-05-02; 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] [stdout] warning: specialization is experimental
[INFO] [stdout]     --> src/lib.rs:2105:9
[INFO] [stdout]      |
[INFO] [stdout] 2105 |         default fn spec_extend(&mut self, iter: I) {
[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 2026-05-02; 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] [stdout] warning: specialization is experimental
[INFO] [stdout]     --> src/lib.rs:2173:9
[INFO] [stdout]      |
[INFO] [stdout] 2173 |         default fn spec_extend(&mut self, iterator: I) {
[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 2026-05-02; 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] [stdout] warning: specialization is experimental
[INFO] [stdout]     --> src/lib.rs:2220:9
[INFO] [stdout]      |
[INFO] [stdout] 2220 |         default unsafe fn spec_extend_from_within(&mut self, src: core::ops::Range<usize>) {
[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 2026-05-02; 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] [stdout] warning: specialization is experimental
[INFO] [stdout]     --> src/lib.rs:2264:9
[INFO] [stdout]      |
[INFO] [stdout] 2264 |         default fn spec_from_iter(iter: I) -> Self {
[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 2026-05-02; 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] [stdout] warning: specialization is experimental
[INFO] [stdout]     --> src/lib.rs:2297:9
[INFO] [stdout]      |
[INFO] [stdout] 2297 |         default fn spec_clone_from(&mut self, source: &[T]) {
[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 2026-05-02; 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] [stdout] warning: specialization is experimental
[INFO] [stdout]     --> src/lib.rs:2322:9
[INFO] [stdout]      |
[INFO] [stdout] 2322 |         default unsafe fn spec_from(slice: &[T]) -> Self {
[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 2026-05-02; 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] [stdout] warning: unnecessary `unsafe` block
[INFO] [stdout]    --> src/lib.rs:210:10
[INFO] [stdout]     |
[INFO] [stdout] 210 |         (unsafe { addr_of!(self.inline) }) as *const T
[INFO] [stdout]     |          ^^^^^^ unnecessary `unsafe` block
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_unsafe)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary `unsafe` block
[INFO] [stdout]    --> src/lib.rs:216:10
[INFO] [stdout]     |
[INFO] [stdout] 216 |         (unsafe { addr_of_mut!(self.inline) }) as *mut T
[INFO] [stdout]     |          ^^^^^^ unnecessary `unsafe` block
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: specialization is experimental
[INFO] [stdout]     --> src/lib.rs:2061:9
[INFO] [stdout]      |
[INFO] [stdout] 2061 |         default unsafe fn spec_from_elem(elem: T, n: usize) -> Self {
[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 2026-05-02; 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] [stdout] warning: specialization is experimental
[INFO] [stdout]     --> src/lib.rs:2105:9
[INFO] [stdout]      |
[INFO] [stdout] 2105 |         default fn spec_extend(&mut self, iter: I) {
[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 2026-05-02; 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] [stdout] warning: specialization is experimental
[INFO] [stdout]     --> src/lib.rs:2173:9
[INFO] [stdout]      |
[INFO] [stdout] 2173 |         default fn spec_extend(&mut self, iterator: I) {
[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 2026-05-02; 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] [stdout] warning: specialization is experimental
[INFO] [stdout]     --> src/lib.rs:2220:9
[INFO] [stdout]      |
[INFO] [stdout] 2220 |         default unsafe fn spec_extend_from_within(&mut self, src: core::ops::Range<usize>) {
[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 2026-05-02; 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] [stdout] warning: specialization is experimental
[INFO] [stdout]     --> src/lib.rs:2264:9
[INFO] [stdout]      |
[INFO] [stdout] 2264 |         default fn spec_from_iter(iter: I) -> Self {
[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 2026-05-02; 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] [stdout] warning: specialization is experimental
[INFO] [stdout]     --> src/lib.rs:2297:9
[INFO] [stdout]      |
[INFO] [stdout] 2297 |         default fn spec_clone_from(&mut self, source: &[T]) {
[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 2026-05-02; 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] [stdout] warning: specialization is experimental
[INFO] [stdout]     --> src/lib.rs:2322:9
[INFO] [stdout]      |
[INFO] [stdout] 2322 |         default unsafe fn spec_from(slice: &[T]) -> Self {
[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 2026-05-02; 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 0.70s
[INFO] running `Command { std: "docker" "inspect" "cc31d2602f967a549a0db83f80d235df3dcfa45d7913d50f5d9fbb16bd477e03", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "cc31d2602f967a549a0db83f80d235df3dcfa45d7913d50f5d9fbb16bd477e03", kill_on_drop: false }`
[INFO] [stdout] cc31d2602f967a549a0db83f80d235df3dcfa45d7913d50f5d9fbb16bd477e03
