[INFO] fetching crate cowstr 1.3.0... [INFO] checking cowstr-1.3.0 against try#7014e13d5becc920d4bea3cd87942c8a13d359bf+rustflags=-Dtail_expr_drop_order for pr-129864 [INFO] extracting crate cowstr 1.3.0 into /workspace/builds/worker-6-tc2/source [INFO] validating manifest of crates.io crate cowstr 1.3.0 on toolchain 7014e13d5becc920d4bea3cd87942c8a13d359bf [INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+7014e13d5becc920d4bea3cd87942c8a13d359bf" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }` [INFO] started tweaking crates.io crate cowstr 1.3.0 [INFO] finished tweaking crates.io crate cowstr 1.3.0 [INFO] tweaked toml for crates.io crate cowstr 1.3.0 written to /workspace/builds/worker-6-tc2/source/Cargo.toml [INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+7014e13d5becc920d4bea3cd87942c8a13d359bf" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }` [INFO] [stderr] Blocking waiting for file lock on package cache [INFO] [stderr] Updating crates.io index [INFO] [stderr] Blocking waiting for file lock on package cache [INFO] [stderr] Locking 12 packages to latest compatible versions [INFO] [stderr] Adding code-product v0.3.0 (available: v0.4.1) [INFO] [stderr] Adding code-product-lib v0.3.0 (available: v0.4.0) [INFO] [stderr] Adding code-product-macro v0.3.0 (available: v0.4.0) [INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+7014e13d5becc920d4bea3cd87942c8a13d359bf" "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-6-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-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:ceb6ea022f8a89cebbe621bb4987e73a935bd40dfbb726f832cfff4742a5b95a" "/opt/rustwide/cargo-home/bin/cargo" "+7014e13d5becc920d4bea3cd87942c8a13d359bf" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }` [INFO] [stdout] d33e2f10e20d161c976a58e05232787ea6767b6606bb0f228c4d5f6daba42cac [INFO] running `Command { std: "docker" "start" "-a" "d33e2f10e20d161c976a58e05232787ea6767b6606bb0f228c4d5f6daba42cac", kill_on_drop: false }` [INFO] running `Command { std: "docker" "inspect" "d33e2f10e20d161c976a58e05232787ea6767b6606bb0f228c4d5f6daba42cac", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "d33e2f10e20d161c976a58e05232787ea6767b6606bb0f228c4d5f6daba42cac", kill_on_drop: false }` [INFO] [stdout] d33e2f10e20d161c976a58e05232787ea6767b6606bb0f228c4d5f6daba42cac [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-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 -Dtail_expr_drop_order" "-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:ceb6ea022f8a89cebbe621bb4987e73a935bd40dfbb726f832cfff4742a5b95a" "/opt/rustwide/cargo-home/bin/cargo" "+7014e13d5becc920d4bea3cd87942c8a13d359bf" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }` [INFO] [stdout] 9f01395436eefe4f443a55f2a61240596a2d0cdcab07318077e134560af8e7e6 [INFO] running `Command { std: "docker" "start" "-a" "9f01395436eefe4f443a55f2a61240596a2d0cdcab07318077e134560af8e7e6", kill_on_drop: false }` [INFO] [stderr] Compiling code-product-lib v0.3.0 [INFO] [stderr] Checking constptr v0.2.0 [INFO] [stderr] Compiling mutants v0.0.3 [INFO] [stderr] Compiling code-product-macro v0.3.0 [INFO] [stderr] Checking code-product v0.3.0 [INFO] [stderr] Checking cowstr v1.3.0 (/opt/rustwide/workdir) [INFO] [stdout] warning: struct `NotSend` is never constructed [INFO] [stdout] --> src/cowstr.rs:1836:8 [INFO] [stdout] | [INFO] [stdout] 1836 | struct NotSend(std::marker::PhantomData<*const ()>); [INFO] [stdout] | ^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `NotSend` has a derived impl for the trait `Default`, but this is intentionally ignored during dead code analysis [INFO] [stdout] = note: `#[warn(dead_code)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: 1 warning emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: missing documentation for the crate [INFO] [stdout] --> tests/substr_threads.rs:1:1 [INFO] [stdout] | [INFO] [stdout] 1 | / use std::thread; [INFO] [stdout] 2 | | [INFO] [stdout] 3 | | use cowstr::*; [INFO] [stdout] ... | [INFO] [stdout] 13 | | thread.join().expect("success"); [INFO] [stdout] 14 | | } [INFO] [stdout] | |_^ [INFO] [stdout] | [INFO] [stdout] = note: requested on the command line with `-W missing-docs` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unexpected `cfg` condition value: `nightly_assert_matches` [INFO] [stdout] --> tests/cowstr.rs:2:13 [INFO] [stdout] | [INFO] [stdout] 2 | #![cfg_attr(feature = "nightly_assert_matches", feature(assert_matches))] [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: expected values for `feature` are: `default`, `nightly`, `nightly_extend_one`, `nightly_fmt_internals`, `nightly_int_roundings`, and `serde` [INFO] [stdout] = help: consider adding `nightly_assert_matches` as a feature in `Cargo.toml` [INFO] [stdout] = note: see for more information about checking conditional configuration [INFO] [stdout] = note: `#[warn(unexpected_cfgs)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unexpected `cfg` condition value: `nightly_assert_matches` [INFO] [stdout] --> tests/cowstr.rs:4:7 [INFO] [stdout] | [INFO] [stdout] 4 | #[cfg(feature = "nightly_assert_matches")] [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: expected values for `feature` are: `default`, `nightly`, `nightly_extend_one`, `nightly_fmt_internals`, `nightly_int_roundings`, and `serde` [INFO] [stdout] = help: consider adding `nightly_assert_matches` as a feature in `Cargo.toml` [INFO] [stdout] = note: see for more information about checking conditional configuration [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: 1 warning emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unexpected `cfg` condition value: `nightly_assert_matches` [INFO] [stdout] --> tests/substr.rs:1:13 [INFO] [stdout] | [INFO] [stdout] 1 | #![cfg_attr(feature = "nightly_assert_matches", feature(assert_matches))] [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: expected values for `feature` are: `default`, `nightly`, `nightly_extend_one`, `nightly_fmt_internals`, `nightly_int_roundings`, and `serde` [INFO] [stdout] = help: consider adding `nightly_assert_matches` as a feature in `Cargo.toml` [INFO] [stdout] = note: see for more information about checking conditional configuration [INFO] [stdout] = note: `#[warn(unexpected_cfgs)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unexpected `cfg` condition value: `nightly_assert_matches` [INFO] [stdout] --> tests/substr.rs:3:7 [INFO] [stdout] | [INFO] [stdout] 3 | #[cfg(feature = "nightly_assert_matches")] [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: expected values for `feature` are: `default`, `nightly`, `nightly_extend_one`, `nightly_fmt_internals`, `nightly_int_roundings`, and `serde` [INFO] [stdout] = help: consider adding `nightly_assert_matches` as a feature in `Cargo.toml` [INFO] [stdout] = note: see for more information about checking conditional configuration [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: missing documentation for the crate [INFO] [stdout] --> tests/cowstr_threads.rs:1:1 [INFO] [stdout] | [INFO] [stdout] 1 | / use std::thread; [INFO] [stdout] 2 | | [INFO] [stdout] 3 | | use cowstr::*; [INFO] [stdout] ... | [INFO] [stdout] 55 | | assert!(thread.join().is_ok()); [INFO] [stdout] 56 | | } [INFO] [stdout] | |_^ [INFO] [stdout] | [INFO] [stdout] = note: requested on the command line with `-W missing-docs` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: missing documentation for the crate [INFO] [stdout] --> tests/cowstr.rs:1:1 [INFO] [stdout] | [INFO] [stdout] 1 | / #![allow(clippy::should_panic_without_expect)] [INFO] [stdout] 2 | | #![cfg_attr(feature = "nightly_assert_matches", feature(assert_matches))] [INFO] [stdout] 3 | | [INFO] [stdout] 4 | | #[cfg(feature = "nightly_assert_matches")] [INFO] [stdout] ... | [INFO] [stdout] 875 | | assert_eq!(s.as_bytes()[9], b'd'); [INFO] [stdout] 876 | | } [INFO] [stdout] | |_^ [INFO] [stdout] | [INFO] [stdout] = note: requested on the command line with `-W missing-docs` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: 3 warnings emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: 1 warning emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: missing documentation for the crate [INFO] [stdout] --> tests/substr.rs:1:1 [INFO] [stdout] | [INFO] [stdout] 1 | / #![cfg_attr(feature = "nightly_assert_matches", feature(assert_matches))] [INFO] [stdout] 2 | | [INFO] [stdout] 3 | | #[cfg(feature = "nightly_assert_matches")] [INFO] [stdout] 4 | | use std::assert_matches::assert_matches; [INFO] [stdout] ... | [INFO] [stdout] 866 | | assert_eq!(s.as_bytes()[9], b'd'); [INFO] [stdout] 867 | | } [INFO] [stdout] | |_^ [INFO] [stdout] | [INFO] [stdout] = note: requested on the command line with `-W missing-docs` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: 3 warnings emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: struct `NotSend` is never constructed [INFO] [stdout] --> src/cowstr.rs:1836:8 [INFO] [stdout] | [INFO] [stdout] 1836 | struct NotSend(std::marker::PhantomData<*const ()>); [INFO] [stdout] | ^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `NotSend` has a derived impl for the trait `Default`, but this is intentionally ignored during dead code analysis [INFO] [stdout] = note: `#[warn(dead_code)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: 1 warning emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stderr] Finished `dev` profile [unoptimized + debuginfo] target(s) in 1.26s [INFO] running `Command { std: "docker" "inspect" "9f01395436eefe4f443a55f2a61240596a2d0cdcab07318077e134560af8e7e6", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "9f01395436eefe4f443a55f2a61240596a2d0cdcab07318077e134560af8e7e6", kill_on_drop: false }` [INFO] [stdout] 9f01395436eefe4f443a55f2a61240596a2d0cdcab07318077e134560af8e7e6