[INFO] fetching crate simple-canvas 0.1.1...
[INFO] testing simple-canvas-0.1.1 against beta-2026-04-21 for beta-1.96-2
[INFO] extracting crate simple-canvas 0.1.1 into /workspace/builds/worker-7-tc2/source
[INFO] started tweaking crates.io crate simple-canvas 0.1.1
[INFO] finished tweaking crates.io crate simple-canvas 0.1.1
[INFO] tweaked toml for crates.io crate simple-canvas 0.1.1 written to /workspace/builds/worker-7-tc2/source/Cargo.toml
[INFO] validating manifest of crates.io crate simple-canvas 0.1.1 on toolchain beta-2026-04-21
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+beta-2026-04-21" "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-2026-04-21" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+beta-2026-04-21" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-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" "+beta-2026-04-21" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 76d90d23b268099f215f09be902d552c70f84c2c6470bc9bb3325f55a8b48acb
[INFO] running `Command { std: "docker" "start" "-a" "76d90d23b268099f215f09be902d552c70f84c2c6470bc9bb3325f55a8b48acb", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "76d90d23b268099f215f09be902d552c70f84c2c6470bc9bb3325f55a8b48acb", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "76d90d23b268099f215f09be902d552c70f84c2c6470bc9bb3325f55a8b48acb", kill_on_drop: false }`
[INFO] [stdout] 76d90d23b268099f215f09be902d552c70f84c2c6470bc9bb3325f55a8b48acb
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-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:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2026-04-21" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 5862f1d43ab2f1f489bb68e8eae168448b0b0e020fc3dd6b422db22798033f84
[INFO] running `Command { std: "docker" "start" "-a" "5862f1d43ab2f1f489bb68e8eae168448b0b0e020fc3dd6b422db22798033f84", kill_on_drop: false }`
[INFO] [stderr]    Compiling simple-canvas v0.1.1 (/opt/rustwide/workdir)
[INFO] [stdout] warning: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stdout]   --> src/lib.rs:76:17
[INFO] [stdout]    |
[INFO] [stdout] 76 |     pub fn iter(&self) -> core::slice::Iter<T> {
[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] 76 |     pub fn iter(&self) -> core::slice::Iter<'_, T> {
[INFO] [stdout]    |                                             +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stdout]   --> src/lib.rs:82:21
[INFO] [stdout]    |
[INFO] [stdout] 82 |     pub fn iter_mut(&mut self) -> core::slice::IterMut<T> {
[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] 82 |     pub fn iter_mut(&mut self) -> core::slice::IterMut<'_, T> {
[INFO] [stdout]    |                                                        +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 0.13s
[INFO] running `Command { std: "docker" "inspect" "5862f1d43ab2f1f489bb68e8eae168448b0b0e020fc3dd6b422db22798033f84", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "5862f1d43ab2f1f489bb68e8eae168448b0b0e020fc3dd6b422db22798033f84", kill_on_drop: false }`
[INFO] [stdout] 5862f1d43ab2f1f489bb68e8eae168448b0b0e020fc3dd6b422db22798033f84
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-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:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2026-04-21" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 7723626074afd04141b4eb1127e937ae021745c3783130d5b92c18529e956d1a
[INFO] running `Command { std: "docker" "start" "-a" "7723626074afd04141b4eb1127e937ae021745c3783130d5b92c18529e956d1a", kill_on_drop: false }`
[INFO] [stdout] warning: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stdout]   --> src/lib.rs:76:17
[INFO] [stdout]    |
[INFO] [stdout] 76 |     pub fn iter(&self) -> core::slice::Iter<T> {
[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] 76 |     pub fn iter(&self) -> core::slice::Iter<'_, T> {
[INFO] [stdout]    |                                             +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stdout]   --> src/lib.rs:82:21
[INFO] [stdout]    |
[INFO] [stdout] 82 |     pub fn iter_mut(&mut self) -> core::slice::IterMut<T> {
[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] 82 |     pub fn iter_mut(&mut self) -> core::slice::IterMut<'_, T> {
[INFO] [stdout]    |                                                        +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]    Compiling simple-canvas v0.1.1 (/opt/rustwide/workdir)
[INFO] [stdout] warning: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stdout]   --> src/lib.rs:76:17
[INFO] [stdout]    |
[INFO] [stdout] 76 |     pub fn iter(&self) -> core::slice::Iter<T> {
[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] 76 |     pub fn iter(&self) -> core::slice::Iter<'_, T> {
[INFO] [stdout]    |                                             +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stdout]   --> src/lib.rs:82:21
[INFO] [stdout]    |
[INFO] [stdout] 82 |     pub fn iter_mut(&mut self) -> core::slice::IterMut<T> {
[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] 82 |     pub fn iter_mut(&mut self) -> core::slice::IterMut<'_, T> {
[INFO] [stdout]    |                                                        +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.27s
[INFO] running `Command { std: "docker" "inspect" "7723626074afd04141b4eb1127e937ae021745c3783130d5b92c18529e956d1a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "7723626074afd04141b4eb1127e937ae021745c3783130d5b92c18529e956d1a", kill_on_drop: false }`
[INFO] [stdout] 7723626074afd04141b4eb1127e937ae021745c3783130d5b92c18529e956d1a
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-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:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2026-04-21" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] 0b75b419cc8d1d39c441f35cb43b3c4fd1fd12493ec011aaf231b32749d7531f
[INFO] running `Command { std: "docker" "start" "-a" "0b75b419cc8d1d39c441f35cb43b3c4fd1fd12493ec011aaf231b32749d7531f", kill_on_drop: false }`
[INFO] [stderr] warning: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stderr]   --> src/lib.rs:76:17
[INFO] [stderr]    |
[INFO] [stderr] 76 |     pub fn iter(&self) -> core::slice::Iter<T> {
[INFO] [stderr]    |                 ^^^^^     ^^^^^^^^^^^^^^^^^^^^ the same lifetime is hidden here
[INFO] [stderr]    |                 |
[INFO] [stderr]    |                 the lifetime is elided here
[INFO] [stderr]    |
[INFO] [stderr]    = help: the same lifetime is referred to in inconsistent ways, making the signature confusing
[INFO] [stderr]    = note: `#[warn(mismatched_lifetime_syntaxes)]` on by default
[INFO] [stderr] help: use `'_` for type paths
[INFO] [stderr]    |
[INFO] [stderr] 76 |     pub fn iter(&self) -> core::slice::Iter<'_, T> {
[INFO] [stderr]    |                                             +++
[INFO] [stderr] 
[INFO] [stderr] warning: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stderr]   --> src/lib.rs:82:21
[INFO] [stderr]    |
[INFO] [stderr] 82 |     pub fn iter_mut(&mut self) -> core::slice::IterMut<T> {
[INFO] [stderr]    |                     ^^^^^^^^^     ^^^^^^^^^^^^^^^^^^^^^^^ the same lifetime is hidden here
[INFO] [stderr]    |                     |
[INFO] [stderr]    |                     the lifetime is elided here
[INFO] [stderr]    |
[INFO] [stderr]    = help: the same lifetime is referred to in inconsistent ways, making the signature confusing
[INFO] [stderr] help: use `'_` for type paths
[INFO] [stderr]    |
[INFO] [stderr] 82 |     pub fn iter_mut(&mut self) -> core::slice::IterMut<'_, T> {
[INFO] [stderr]    |                                                        +++
[INFO] [stderr] 
[INFO] [stderr] warning: `simple-canvas` (lib) generated 2 warnings (run `cargo fix --lib -p simple-canvas` to apply 2 suggestions)
[INFO] [stdout] 
[INFO] [stderr] warning: `simple-canvas` (lib test) generated 2 warnings (2 duplicates)
[INFO] [stdout] running 0 tests
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.02s
[INFO] [stdout] 
[INFO] [stderr]      Running unittests src/lib.rs (/opt/rustwide/target/debug/deps/simple_canvas-9a8fa2280e45ff52)
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stderr]    Doc-tests simple_canvas
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] running 0 tests
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "0b75b419cc8d1d39c441f35cb43b3c4fd1fd12493ec011aaf231b32749d7531f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "0b75b419cc8d1d39c441f35cb43b3c4fd1fd12493ec011aaf231b32749d7531f", kill_on_drop: false }`
[INFO] [stdout] 0b75b419cc8d1d39c441f35cb43b3c4fd1fd12493ec011aaf231b32749d7531f
