[INFO] fetching crate histo_fp 0.2.1... [INFO] testing histo_fp-0.2.1 against beta-2025-09-21 for beta-1.91-3 [INFO] extracting crate histo_fp 0.2.1 into /workspace/builds/worker-0-tc2/source [INFO] started tweaking crates.io crate histo_fp 0.2.1 [INFO] finished tweaking crates.io crate histo_fp 0.2.1 [INFO] tweaked toml for crates.io crate histo_fp 0.2.1 written to /workspace/builds/worker-0-tc2/source/Cargo.toml [INFO] validating manifest of crates.io crate histo_fp 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] crate crates.io crate histo_fp 0.2.1 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" "+beta-2025-09-21" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }` [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-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] 662e3a2d489e1ff831b9356a7c669b82fb8ebdb60dbbb184e1278bec887751a6 [INFO] running `Command { std: "docker" "start" "-a" "662e3a2d489e1ff831b9356a7c669b82fb8ebdb60dbbb184e1278bec887751a6", kill_on_drop: false }` [INFO] running `Command { std: "docker" "inspect" "662e3a2d489e1ff831b9356a7c669b82fb8ebdb60dbbb184e1278bec887751a6", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "662e3a2d489e1ff831b9356a7c669b82fb8ebdb60dbbb184e1278bec887751a6", kill_on_drop: false }` [INFO] [stdout] 662e3a2d489e1ff831b9356a7c669b82fb8ebdb60dbbb184e1278bec887751a6 [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-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] 6acc326260346c2c366c51158f6ec731ac0a135ef9185d1e63f5d2d9661dec83 [INFO] running `Command { std: "docker" "start" "-a" "6acc326260346c2c366c51158f6ec731ac0a135ef9185d1e63f5d2d9661dec83", kill_on_drop: false }` [INFO] [stderr] Compiling libc v0.2.74 [INFO] [stderr] Compiling getrandom v0.1.14 [INFO] [stderr] Compiling autocfg v1.0.0 [INFO] [stderr] Compiling ppv-lite86 v0.2.8 [INFO] [stderr] Compiling num-traits v0.2.12 [INFO] [stderr] Compiling rand_core v0.5.1 [INFO] [stderr] Compiling rand_chacha v0.2.2 [INFO] [stderr] Compiling rand v0.7.3 [INFO] [stderr] Compiling noisy_float v0.1.12 [INFO] [stderr] Compiling streaming-stats v0.1.29 [INFO] [stderr] Compiling histo_fp v0.2.1 (/opt/rustwide/workdir) [INFO] [stdout] warning: field `precision` is never read [INFO] [stdout] --> src/lib.rs:84:5 [INFO] [stdout] | [INFO] [stdout] 82 | pub struct Histogram { [INFO] [stdout] | --------- field in this struct [INFO] [stdout] 83 | num_buckets: u64, [INFO] [stdout] 84 | precision: u32, [INFO] [stdout] | ^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `Histogram` has derived impls for the traits `Clone` and `Debug`, but these are intentionally ignored during dead code analysis [INFO] [stdout] = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: hiding a lifetime that's elided elsewhere is confusing [INFO] [stdout] --> src/lib.rs:118:20 [INFO] [stdout] | [INFO] [stdout] 118 | pub fn buckets(&self) -> Buckets { [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] 118 | pub fn buckets(&self) -> Buckets<'_> { [INFO] [stdout] | ++++ [INFO] [stdout] [INFO] [stdout] [INFO] [stderr] Finished `dev` profile [unoptimized + debuginfo] target(s) in 3.00s [INFO] running `Command { std: "docker" "inspect" "6acc326260346c2c366c51158f6ec731ac0a135ef9185d1e63f5d2d9661dec83", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "6acc326260346c2c366c51158f6ec731ac0a135ef9185d1e63f5d2d9661dec83", kill_on_drop: false }` [INFO] [stdout] 6acc326260346c2c366c51158f6ec731ac0a135ef9185d1e63f5d2d9661dec83 [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-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] bce277611a62fe968a1f0a04682ee73447346c1247d9dc7fda46a77bea83ff55 [INFO] running `Command { std: "docker" "start" "-a" "bce277611a62fe968a1f0a04682ee73447346c1247d9dc7fda46a77bea83ff55", kill_on_drop: false }` [INFO] [stderr] Compiling histo_fp v0.2.1 (/opt/rustwide/workdir) [INFO] [stdout] warning: field `precision` is never read [INFO] [stdout] --> src/lib.rs:84:5 [INFO] [stdout] | [INFO] [stdout] 82 | pub struct Histogram { [INFO] [stdout] | --------- field in this struct [INFO] [stdout] 83 | num_buckets: u64, [INFO] [stdout] 84 | precision: u32, [INFO] [stdout] | ^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `Histogram` has derived impls for the traits `Clone` and `Debug`, but these are intentionally ignored during dead code analysis [INFO] [stdout] = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: hiding a lifetime that's elided elsewhere is confusing [INFO] [stdout] --> src/lib.rs:118:20 [INFO] [stdout] | [INFO] [stdout] 118 | pub fn buckets(&self) -> Buckets { [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] 118 | pub fn buckets(&self) -> Buckets<'_> { [INFO] [stdout] | ++++ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: field `precision` is never read [INFO] [stdout] --> src/lib.rs:84:5 [INFO] [stdout] | [INFO] [stdout] 82 | pub struct Histogram { [INFO] [stdout] | --------- field in this struct [INFO] [stdout] 83 | num_buckets: u64, [INFO] [stdout] 84 | precision: u32, [INFO] [stdout] | ^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `Histogram` has derived impls for the traits `Clone` and `Debug`, but these are intentionally ignored during dead code analysis [INFO] [stdout] = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: hiding a lifetime that's elided elsewhere is confusing [INFO] [stdout] --> src/lib.rs:118:20 [INFO] [stdout] | [INFO] [stdout] 118 | pub fn buckets(&self) -> Buckets { [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] 118 | pub fn buckets(&self) -> Buckets<'_> { [INFO] [stdout] | ++++ [INFO] [stdout] [INFO] [stdout] [INFO] [stderr] Finished `test` profile [unoptimized + debuginfo] target(s) in 0.61s [INFO] running `Command { std: "docker" "inspect" "bce277611a62fe968a1f0a04682ee73447346c1247d9dc7fda46a77bea83ff55", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "bce277611a62fe968a1f0a04682ee73447346c1247d9dc7fda46a77bea83ff55", kill_on_drop: false }` [INFO] [stdout] bce277611a62fe968a1f0a04682ee73447346c1247d9dc7fda46a77bea83ff55 [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-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", kill_on_drop: false }` [INFO] [stdout] baf000d57284ece80df80eaf17934569bb86d3718dc2d12a283cb65af5213a45 [INFO] running `Command { std: "docker" "start" "-a" "baf000d57284ece80df80eaf17934569bb86d3718dc2d12a283cb65af5213a45", kill_on_drop: false }` [INFO] [stderr] warning: field `precision` is never read [INFO] [stderr] --> src/lib.rs:84:5 [INFO] [stderr] | [INFO] [stderr] 82 | pub struct Histogram { [INFO] [stderr] | --------- field in this struct [INFO] [stderr] 83 | num_buckets: u64, [INFO] [stderr] 84 | precision: u32, [INFO] [stderr] | ^^^^^^^^^ [INFO] [stderr] | [INFO] [stderr] = note: `Histogram` has derived impls for the traits `Clone` and `Debug`, but these are intentionally ignored during dead code analysis [INFO] [stderr] = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default [INFO] [stderr] [INFO] [stderr] warning: hiding a lifetime that's elided elsewhere is confusing [INFO] [stderr] --> src/lib.rs:118:20 [INFO] [stderr] | [INFO] [stderr] 118 | pub fn buckets(&self) -> Buckets { [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] 118 | pub fn buckets(&self) -> Buckets<'_> { [INFO] [stderr] | ++++ [INFO] [stderr] [INFO] [stderr] warning: `histo_fp` (lib) generated 2 warnings (run `cargo fix --lib -p histo_fp` to apply 1 suggestion) [INFO] [stderr] warning: `histo_fp` (lib test) generated 2 warnings (2 duplicates) [INFO] [stderr] Finished `test` profile [unoptimized + debuginfo] target(s) in 0.03s [INFO] [stderr] Running unittests src/lib.rs (/opt/rustwide/target/debug/deps/histo_fp-6abe14b3b63546b0) [INFO] [stdout] [INFO] [stdout] running 5 tests [INFO] [stdout] test tests::bucket_count ... ok [INFO] [stdout] test tests::bucket_count_one ... ok [INFO] [stdout] test tests::add ... ok [INFO] [stdout] test tests::overflow_panic ... ok [INFO] [stdout] test tests::num_buckets ... ok [INFO] [stdout] [INFO] [stdout] test result: ok. 5 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s [INFO] [stdout] [INFO] [stderr] Running unittests src/bin/histo_fp.rs (/opt/rustwide/target/debug/deps/histo_fp-2df8e9970e1bd30c) [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] [stderr] Doc-tests histo_fp [INFO] [stdout] [INFO] [stdout] running 1 test [INFO] [stdout] test src/lib.rs - (line 12) ... ok [INFO] [stdout] [INFO] [stdout] test result: ok. 1 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.24s [INFO] [stdout] [INFO] running `Command { std: "docker" "inspect" "baf000d57284ece80df80eaf17934569bb86d3718dc2d12a283cb65af5213a45", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "baf000d57284ece80df80eaf17934569bb86d3718dc2d12a283cb65af5213a45", kill_on_drop: false }` [INFO] [stdout] baf000d57284ece80df80eaf17934569bb86d3718dc2d12a283cb65af5213a45