[INFO] fetching crate string32 0.2.0... [INFO] testing string32-0.2.0 against try#b83b707f97d809763b7861afa7638871f3339a33 for pr-145838-1 [INFO] extracting crate string32 0.2.0 into /workspace/builds/worker-5-tc2/source [INFO] started tweaking crates.io crate string32 0.2.0 [INFO] finished tweaking crates.io crate string32 0.2.0 [INFO] tweaked toml for crates.io crate string32 0.2.0 written to /workspace/builds/worker-5-tc2/source/Cargo.toml [INFO] validating manifest of crates.io crate string32 0.2.0 on toolchain b83b707f97d809763b7861afa7638871f3339a33 [INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+b83b707f97d809763b7861afa7638871f3339a33" "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" "+b83b707f97d809763b7861afa7638871f3339a33" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }` [INFO] [stderr] Updating crates.io index [INFO] [stderr] Locking 2 packages to latest compatible versions [INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+b83b707f97d809763b7861afa7638871f3339a33" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }` [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@sha256:7ad1b28ee6f5f7f699f6cf7015098d6ccdd96d6f2d78dd06228f5b4c9faf309c" "/opt/rustwide/cargo-home/bin/cargo" "+b83b707f97d809763b7861afa7638871f3339a33" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }` [INFO] [stdout] 4d2539d855e804a94df1ab5bc96b30084153f6b5fd3686a944148faf8c2b735f [INFO] running `Command { std: "docker" "start" "-a" "4d2539d855e804a94df1ab5bc96b30084153f6b5fd3686a944148faf8c2b735f", kill_on_drop: false }` [INFO] running `Command { std: "docker" "inspect" "4d2539d855e804a94df1ab5bc96b30084153f6b5fd3686a944148faf8c2b735f", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "4d2539d855e804a94df1ab5bc96b30084153f6b5fd3686a944148faf8c2b735f", kill_on_drop: false }` [INFO] [stdout] 4d2539d855e804a94df1ab5bc96b30084153f6b5fd3686a944148faf8c2b735f [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@sha256:7ad1b28ee6f5f7f699f6cf7015098d6ccdd96d6f2d78dd06228f5b4c9faf309c" "/opt/rustwide/cargo-home/bin/cargo" "+b83b707f97d809763b7861afa7638871f3339a33" "build" "--frozen" "--message-format=json", kill_on_drop: false }` [INFO] [stdout] 9486322c7e90f2790423a712f4c78f03f7b38bde3b4d00f28591d9b95cb2f3e5 [INFO] running `Command { std: "docker" "start" "-a" "9486322c7e90f2790423a712f4c78f03f7b38bde3b4d00f28591d9b95cb2f3e5", kill_on_drop: false }` [INFO] [stderr] Compiling usize_cast v1.1.0 [INFO] [stderr] Compiling mediumvec v1.3.1 [INFO] [stderr] Compiling string32 v0.2.0 (/opt/rustwide/workdir) [INFO] [stdout] warning: `#[must_use]` attribute cannot be used on trait methods in impl blocks [INFO] [stdout] --> src/string32.rs:386:5 [INFO] [stdout] | [INFO] [stdout] 386 | #[must_use] [INFO] [stdout] | ^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release! [INFO] [stdout] = help: `#[must_use]` can be applied to data types, functions, unions, required trait methods, provided trait methods, inherent methods, foreign functions, and traits [INFO] [stdout] = note: `#[warn(unused_attributes)]` (part of `#[warn(unused)]`) on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: `#[must_use]` attribute cannot be used on trait methods in impl blocks [INFO] [stdout] --> src/string32.rs:396:5 [INFO] [stdout] | [INFO] [stdout] 396 | #[must_use] [INFO] [stdout] | ^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release! [INFO] [stdout] = help: `#[must_use]` can be applied to data types, functions, unions, required trait methods, provided trait methods, inherent methods, foreign functions, and traits [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: hiding a lifetime that's elided elsewhere is confusing [INFO] [stdout] --> src/str32.rs:138:18 [INFO] [stdout] | [INFO] [stdout] 138 | pub fn chars(&self) -> std::str::Chars { [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] 138 | pub fn chars(&self) -> std::str::Chars<'_> { [INFO] [stdout] | ++++ [INFO] [stdout] [INFO] [stdout] [INFO] [stderr] Finished `dev` profile [unoptimized + debuginfo] target(s) in 0.52s [INFO] running `Command { std: "docker" "inspect" "9486322c7e90f2790423a712f4c78f03f7b38bde3b4d00f28591d9b95cb2f3e5", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "9486322c7e90f2790423a712f4c78f03f7b38bde3b4d00f28591d9b95cb2f3e5", kill_on_drop: false }` [INFO] [stdout] 9486322c7e90f2790423a712f4c78f03f7b38bde3b4d00f28591d9b95cb2f3e5 [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@sha256:7ad1b28ee6f5f7f699f6cf7015098d6ccdd96d6f2d78dd06228f5b4c9faf309c" "/opt/rustwide/cargo-home/bin/cargo" "+b83b707f97d809763b7861afa7638871f3339a33" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }` [INFO] [stdout] d46eb8bed800c9c5ba2aceb391759842874bda5ee4c21f03a802fe017adc4dd0 [INFO] running `Command { std: "docker" "start" "-a" "d46eb8bed800c9c5ba2aceb391759842874bda5ee4c21f03a802fe017adc4dd0", kill_on_drop: false }` [INFO] [stderr] Compiling string32 v0.2.0 (/opt/rustwide/workdir) [INFO] [stdout] warning: `#[must_use]` attribute cannot be used on trait methods in impl blocks [INFO] [stdout] --> src/string32.rs:386:5 [INFO] [stdout] | [INFO] [stdout] 386 | #[must_use] [INFO] [stdout] | ^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release! [INFO] [stdout] = help: `#[must_use]` can be applied to data types, functions, unions, required trait methods, provided trait methods, inherent methods, foreign functions, and traits [INFO] [stdout] = note: `#[warn(unused_attributes)]` (part of `#[warn(unused)]`) on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: `#[must_use]` attribute cannot be used on trait methods in impl blocks [INFO] [stdout] --> src/string32.rs:396:5 [INFO] [stdout] | [INFO] [stdout] 396 | #[must_use] [INFO] [stdout] | ^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release! [INFO] [stdout] = help: `#[must_use]` can be applied to data types, functions, unions, required trait methods, provided trait methods, inherent methods, foreign functions, and traits [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: hiding a lifetime that's elided elsewhere is confusing [INFO] [stdout] --> src/str32.rs:138:18 [INFO] [stdout] | [INFO] [stdout] 138 | pub fn chars(&self) -> std::str::Chars { [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] 138 | pub fn chars(&self) -> std::str::Chars<'_> { [INFO] [stdout] | ++++ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: `#[must_use]` attribute cannot be used on trait methods in impl blocks [INFO] [stdout] --> src/string32.rs:386:5 [INFO] [stdout] | [INFO] [stdout] 386 | #[must_use] [INFO] [stdout] | ^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release! [INFO] [stdout] = help: `#[must_use]` can be applied to data types, functions, unions, required trait methods, provided trait methods, inherent methods, foreign functions, and traits [INFO] [stdout] = note: `#[warn(unused_attributes)]` (part of `#[warn(unused)]`) on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: `#[must_use]` attribute cannot be used on trait methods in impl blocks [INFO] [stdout] --> src/string32.rs:396:5 [INFO] [stdout] | [INFO] [stdout] 396 | #[must_use] [INFO] [stdout] | ^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release! [INFO] [stdout] = help: `#[must_use]` can be applied to data types, functions, unions, required trait methods, provided trait methods, inherent methods, foreign functions, and traits [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: hiding a lifetime that's elided elsewhere is confusing [INFO] [stdout] --> src/str32.rs:138:18 [INFO] [stdout] | [INFO] [stdout] 138 | pub fn chars(&self) -> std::str::Chars { [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] 138 | pub fn chars(&self) -> std::str::Chars<'_> { [INFO] [stdout] | ++++ [INFO] [stdout] [INFO] [stdout] [INFO] [stderr] Finished `test` profile [unoptimized + debuginfo] target(s) in 0.46s [INFO] running `Command { std: "docker" "inspect" "d46eb8bed800c9c5ba2aceb391759842874bda5ee4c21f03a802fe017adc4dd0", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "d46eb8bed800c9c5ba2aceb391759842874bda5ee4c21f03a802fe017adc4dd0", kill_on_drop: false }` [INFO] [stdout] d46eb8bed800c9c5ba2aceb391759842874bda5ee4c21f03a802fe017adc4dd0 [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@sha256:7ad1b28ee6f5f7f699f6cf7015098d6ccdd96d6f2d78dd06228f5b4c9faf309c" "/opt/rustwide/cargo-home/bin/cargo" "+b83b707f97d809763b7861afa7638871f3339a33" "test" "--frozen", kill_on_drop: false }` [INFO] [stdout] d0631ca9f3d7804223258007c052274225ad4b86748285f4a0e1d3b35cd95d4b [INFO] running `Command { std: "docker" "start" "-a" "d0631ca9f3d7804223258007c052274225ad4b86748285f4a0e1d3b35cd95d4b", kill_on_drop: false }` [INFO] [stderr] warning: `#[must_use]` attribute cannot be used on trait methods in impl blocks [INFO] [stderr] --> src/string32.rs:386:5 [INFO] [stderr] | [INFO] [stderr] 386 | #[must_use] [INFO] [stderr] | ^^^^^^^^^^^ [INFO] [stderr] | [INFO] [stderr] = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release! [INFO] [stderr] = help: `#[must_use]` can be applied to data types, functions, unions, required trait methods, provided trait methods, inherent methods, foreign functions, and traits [INFO] [stderr] = note: `#[warn(unused_attributes)]` (part of `#[warn(unused)]`) on by default [INFO] [stderr] [INFO] [stderr] warning: `#[must_use]` attribute cannot be used on trait methods in impl blocks [INFO] [stderr] --> src/string32.rs:396:5 [INFO] [stderr] | [INFO] [stderr] 396 | #[must_use] [INFO] [stderr] | ^^^^^^^^^^^ [INFO] [stderr] | [INFO] [stderr] = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release! [INFO] [stderr] = help: `#[must_use]` can be applied to data types, functions, unions, required trait methods, provided trait methods, inherent methods, foreign functions, and traits [INFO] [stderr] [INFO] [stderr] warning: hiding a lifetime that's elided elsewhere is confusing [INFO] [stderr] --> src/str32.rs:138:18 [INFO] [stderr] | [INFO] [stderr] 138 | pub fn chars(&self) -> std::str::Chars { [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] 138 | pub fn chars(&self) -> std::str::Chars<'_> { [INFO] [stderr] | ++++ [INFO] [stderr] [INFO] [stderr] warning: `string32` (lib) generated 3 warnings (run `cargo fix --lib -p string32` to apply 3 suggestions) [INFO] [stderr] warning: `string32` (lib test) generated 3 warnings (3 duplicates) [INFO] [stderr] Finished `test` profile [unoptimized + debuginfo] target(s) in 0.02s [INFO] [stderr] Running unittests src/lib.rs (/opt/rustwide/target/debug/deps/string32-9eb02be5133638ff) [INFO] [stdout] [INFO] [stdout] running 3 tests [INFO] [stdout] test tests::test_complex ... ok [INFO] [stdout] test tests::test_hash ... ok [INFO] [stdout] test tests::test_simple ... ok [INFO] [stdout] [INFO] [stdout] test result: ok. 3 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s [INFO] [stdout] [INFO] [stderr] Doc-tests string32 [INFO] [stdout] [INFO] [stdout] running 32 tests [INFO] [stdout] test src/str32.rs - str32::Str32::trim_end (line 369) ... ok [INFO] [stdout] test src/str32.rs - str32::Str32::to_lowercase (line 279) ... ok [INFO] [stdout] test src/str32.rs - str32::Str32::trim_start (line 354) ... ok [INFO] [stdout] test src/string32.rs - string32::String32::capacity (line 57) ... ok [INFO] [stdout] test src/str32.rs - str32::Str32::to_ascii_uppercase (line 324) ... ok [INFO] [stdout] test src/str32.rs - str32::Str32::is_empty (line 125) ... ok [INFO] [stdout] test src/str32.rs - str32::Str32::as_str (line 23) ... ok [INFO] [stdout] test src/str32.rs - str32::Str32::as_bytes_mut (line 59) ... ok [INFO] [stdout] test src/str32.rs - str32::Str32::to_ascii_lowercase (line 309) ... ok [INFO] [stdout] test src/str32.rs - str32::Str32::to_uppercase (line 294) ... ok [INFO] [stdout] test src/str32.rs - str32::Str32::make_ascii_uppercase (line 243) ... ok [INFO] [stdout] test src/string32.rs - string32::String32::into_boxed_str (line 301) ... ok [INFO] [stdout] test src/str32.rs - str32::Str32::trim (line 339) ... ok [INFO] [stdout] test src/str32.rs - str32::Str32::len (line 110) ... ok [INFO] [stdout] test src/string32.rs - string32::String32::as_string (line 77) ... ok [INFO] [stdout] test src/str32.rs - str32::Str32::as_bytes (line 44) ... ok [INFO] [stdout] test src/string32.rs - string32::String32::into_bytes (line 285) ... ok [INFO] [stdout] test src/str32.rs - str32::Str32::make_ascii_lowercase (line 228) ... ok [INFO] [stdout] test src/string32.rs - string32::String32::insert_str (line 193) ... ok [INFO] [stdout] test src/string32.rs - string32::String32::insert (line 174) ... ok [INFO] [stdout] test src/string32.rs - string32::String32::push (line 101) ... ok [INFO] [stdout] test src/string32.rs - string32::String32::pop (line 136) ... ok [INFO] [stdout] test src/string32.rs - string32::String32::remove (line 155) ... ok [INFO] [stdout] test src/string32.rs - string32::String32::push_str (line 119) ... ok [INFO] [stdout] test src/string32.rs - string32::String32::shrink_to_fit (line 241) ... ok [INFO] [stdout] test src/string32.rs - string32::String32::split_off (line 320) ... ok [INFO] [stdout] test src/string32.rs - string32::String32::reserve_exact (line 227) ... ok [INFO] [stdout] test src/string32.rs - string32::String32::with_capacity (line 41) ... ok [INFO] [stdout] test src/string32.rs - string32::String32::reserve (line 211) ... ok [INFO] [stdout] test src/string32.rs - string32::String32::truncate (line 255) ... ok [INFO] [stdout] test src/string32.rs - string32::String32::new (line 28) ... ok [INFO] [stdout] test src/string32.rs - string32::String32::clear (line 270) ... FAILED [INFO] [stdout] [INFO] [stdout] failures: [INFO] [stdout] [INFO] [stdout] ---- src/string32.rs - string32::String32::clear (line 270) stdout ---- [INFO] [stdout] Test executable failed (signal: 6 (SIGABRT) (core dumped)). [INFO] [stdout] [INFO] [stdout] stderr: [INFO] [stdout] [INFO] [stdout] thread 'main' (835) panicked at /opt/rustwide/cargo-home/registry/src/index.crates.io-1949cf8c6b5b557f/mediumvec-1.3.1/src/vec32.rs:293:41: [INFO] [stdout] unsafe precondition(s) violated: slice::get_unchecked_mut requires that the index is within the slice [INFO] [stdout] [INFO] [stdout] This indicates a bug in the program. This Undefined Behavior check is optional, and cannot be relied on for safety. [INFO] [stdout] stack backtrace: [INFO] [stdout] 0: 0x5a9aef3add92 - std::backtrace_rs::backtrace::libunwind::trace::h589a96ef7638b383 [INFO] [stdout] at /rustc/b83b707f97d809763b7861afa7638871f3339a33/library/std/src/../../backtrace/src/backtrace/libunwind.rs:117:9 [INFO] [stdout] 1: 0x5a9aef3add92 - std::backtrace_rs::backtrace::trace_unsynchronized::h23a30a7548c40de4 [INFO] [stdout] at /rustc/b83b707f97d809763b7861afa7638871f3339a33/library/std/src/../../backtrace/src/backtrace/mod.rs:66:14 [INFO] [stdout] 2: 0x5a9aef3add92 - std::sys::backtrace::_print_fmt::h87dabd6535c8c07a [INFO] [stdout] at /rustc/b83b707f97d809763b7861afa7638871f3339a33/library/std/src/sys/backtrace.rs:66:9 [INFO] [stdout] 3: 0x5a9aef3add92 - ::fmt::hffd20ad4e5eca8ab [INFO] [stdout] at /rustc/b83b707f97d809763b7861afa7638871f3339a33/library/std/src/sys/backtrace.rs:39:26 [INFO] [stdout] 4: 0x5a9aef3bca9f - core::fmt::rt::Argument::fmt::h75c83e3fd5ce2419 [INFO] [stdout] at /rustc/b83b707f97d809763b7861afa7638871f3339a33/library/core/src/fmt/rt.rs:173:76 [INFO] [stdout] 5: 0x5a9aef3bca9f - core::fmt::write::h6d9d3a7cfd7b84f5 [INFO] [stdout] at /rustc/b83b707f97d809763b7861afa7638871f3339a33/library/core/src/fmt/mod.rs:1468:25 [INFO] [stdout] 6: 0x5a9aef38c833 - std::io::default_write_fmt::ha7130bf70117e1da [INFO] [stdout] at /rustc/b83b707f97d809763b7861afa7638871f3339a33/library/std/src/io/mod.rs:639:11 [INFO] [stdout] 7: 0x5a9aef38c833 - std::io::Write::write_fmt::h22459ad26fe60c51 [INFO] [stdout] at /rustc/b83b707f97d809763b7861afa7638871f3339a33/library/std/src/io/mod.rs:1954:13 [INFO] [stdout] 8: 0x5a9aef391742 - std::sys::backtrace::BacktraceLock::print::hb28797143397220e [INFO] [stdout] at /rustc/b83b707f97d809763b7861afa7638871f3339a33/library/std/src/sys/backtrace.rs:42:9 [INFO] [stdout] 9: 0x5a9aef392f9c - std::panicking::default_hook::{{closure}}::h7555113b62983743 [INFO] [stdout] at /rustc/b83b707f97d809763b7861afa7638871f3339a33/library/std/src/panicking.rs:301:27 [INFO] [stdout] 10: 0x5a9aef392df6 - std::panicking::default_hook::h2714b564abe8d914 [INFO] [stdout] at /rustc/b83b707f97d809763b7861afa7638871f3339a33/library/std/src/panicking.rs:328:9 [INFO] [stdout] 11: 0x5a9aef393575 - std::panicking::panic_with_hook::h190dc82263685ec5 [INFO] [stdout] at /rustc/b83b707f97d809763b7861afa7638871f3339a33/library/std/src/panicking.rs:834:13 [INFO] [stdout] 12: 0x5a9aef3933d6 - std::panicking::panic_handler::{{closure}}::h8b036a1b366643ac [INFO] [stdout] at /rustc/b83b707f97d809763b7861afa7638871f3339a33/library/std/src/panicking.rs:700:13 [INFO] [stdout] 13: 0x5a9aef391879 - std::sys::backtrace::__rust_end_short_backtrace::h45affcfc0c830da8 [INFO] [stdout] at /rustc/b83b707f97d809763b7861afa7638871f3339a33/library/std/src/sys/backtrace.rs:174:18 [INFO] [stdout] 14: 0x5a9aef38120d - __rustc[9b67c8562bba447b]::rust_begin_unwind [INFO] [stdout] at /rustc/b83b707f97d809763b7861afa7638871f3339a33/library/std/src/panicking.rs:698:5 [INFO] [stdout] 15: 0x5a9aef3bf7ed - core::panicking::panic_nounwind_fmt::runtime::h0e9d970dfc029f14 [INFO] [stdout] at /rustc/b83b707f97d809763b7861afa7638871f3339a33/library/core/src/panicking.rs:117:22 [INFO] [stdout] 16: 0x5a9aef3bf7ed - core::panicking::panic_nounwind_fmt::h120e82628a1ba90a [INFO] [stdout] at /rustc/b83b707f97d809763b7861afa7638871f3339a33/library/core/src/intrinsics/mod.rs:2380:9 [INFO] [stdout] 17: 0x5a9aef380bac - >::get_unchecked_mut::precondition_check::hd8edaf66a2ccd5ff [INFO] [stdout] at /rustc/b83b707f97d809763b7861afa7638871f3339a33/library/core/src/ub_checks.rs:72:21 [INFO] [stdout] 18: 0x5a9aef380af9 - >::get_unchecked_mut::h9895aeb218428d09 [INFO] [stdout] at /rustc/b83b707f97d809763b7861afa7638871f3339a33/library/core/src/ub_checks.rs:77:17 [INFO] [stdout] 19: 0x5a9aef37f8c9 - core::slice::::get_unchecked_mut::h65850e41d1cdac94 [INFO] [stdout] at /rustc/b83b707f97d809763b7861afa7638871f3339a33/library/core/src/slice/mod.rs:689:30 [INFO] [stdout] 20: 0x5a9aef380f64 - mediumvec::vec32::Vec32::truncate::haf9d0c91998829dd [INFO] [stdout] at /opt/rustwide/cargo-home/registry/src/index.crates.io-1949cf8c6b5b557f/mediumvec-1.3.1/src/vec32.rs:293:41 [INFO] [stdout] 21: 0x5a9aef380cdd - mediumvec::vec32::Vec32::clear::he8daa8f4d7d0b5d4 [INFO] [stdout] at /opt/rustwide/cargo-home/registry/src/index.crates.io-1949cf8c6b5b557f/mediumvec-1.3.1/src/vec32.rs:279:14 [INFO] [stdout] 22: 0x5a9aef37eb4b - string32::string32::String32::clear::ha425f19aa0aa9b28 [INFO] [stdout] at /opt/rustwide/workdir/src/string32.rs:278:16 [INFO] [stdout] 23: 0x5a9aef37e148 - rust_out::main::_doctest_main_src_string32_rs_270_0::hf9ecbd1a7cb45304 [INFO] [stdout] 24: 0x5a9aef37e0a6 - rust_out::main::h542e0f1f2a7f6b11 [INFO] [stdout] 25: 0x5a9aef37e043 - core::ops::function::FnOnce::call_once::h21e4d13f24e06a24 [INFO] [stdout] 26: 0x5a9aef37dfe6 - std::sys::backtrace::__rust_begin_short_backtrace::h603ef4a30a4f78fd [INFO] [stdout] 27: 0x5a9aef37dfc9 - std::rt::lang_start::{{closure}}::h433d00c5fb7f893d [INFO] [stdout] 28: 0x5a9aef38d7d0 - core::ops::function::impls:: for &F>::call_once::hcc75fa61d21ecbe5 [INFO] [stdout] at /rustc/b83b707f97d809763b7861afa7638871f3339a33/library/core/src/ops/function.rs:290:21 [INFO] [stdout] 29: 0x5a9aef38d7d0 - std::panicking::catch_unwind::do_call::h38c051a071ca3bc0 [INFO] [stdout] at /rustc/b83b707f97d809763b7861afa7638871f3339a33/library/std/src/panicking.rs:590:40 [INFO] [stdout] 30: 0x5a9aef38d7d0 - std::panicking::catch_unwind::hede2a2f6f4519f78 [INFO] [stdout] at /rustc/b83b707f97d809763b7861afa7638871f3339a33/library/std/src/panicking.rs:553:19 [INFO] [stdout] 31: 0x5a9aef38d7d0 - std::panic::catch_unwind::h94765a19f52c0a43 [INFO] [stdout] at /rustc/b83b707f97d809763b7861afa7638871f3339a33/library/std/src/panic.rs:359:14 [INFO] [stdout] 32: 0x5a9aef38d7d0 - std::rt::lang_start_internal::{{closure}}::hb89c21d557706591 [INFO] [stdout] at /rustc/b83b707f97d809763b7861afa7638871f3339a33/library/std/src/rt.rs:175:24 [INFO] [stdout] 33: 0x5a9aef38d7d0 - std::panicking::catch_unwind::do_call::h50685f05733aeeef [INFO] [stdout] at /rustc/b83b707f97d809763b7861afa7638871f3339a33/library/std/src/panicking.rs:590:40 [INFO] [stdout] 34: 0x5a9aef38d7d0 - std::panicking::catch_unwind::hf9ba9716b02e6738 [INFO] [stdout] at /rustc/b83b707f97d809763b7861afa7638871f3339a33/library/std/src/panicking.rs:553:19 [INFO] [stdout] 35: 0x5a9aef38d7d0 - std::panic::catch_unwind::h29770e281302b24d [INFO] [stdout] at /rustc/b83b707f97d809763b7861afa7638871f3339a33/library/std/src/panic.rs:359:14 [INFO] [stdout] 36: 0x5a9aef38d7d0 - std::rt::lang_start_internal::hd5573b1f5f705a2a [INFO] [stdout] at /rustc/b83b707f97d809763b7861afa7638871f3339a33/library/std/src/rt.rs:171:5 [INFO] [stdout] 37: 0x5a9aef37dfb1 - std::rt::lang_start::habd89dad5a59b012 [INFO] [stdout] 38: 0x5a9aef37e215 - main [INFO] [stdout] 39: 0x7f00b2d271ca - [INFO] [stdout] 40: 0x7f00b2d2728b - __libc_start_main [INFO] [stdout] 41: 0x5a9aef37dec5 - _start [INFO] [stdout] 42: 0x0 - [INFO] [stdout] thread caused non-unwinding panic. aborting. [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] failures: [INFO] [stdout] src/string32.rs - string32::String32::clear (line 270) [INFO] [stdout] [INFO] [stdout] test result: FAILED. 31 passed; 1 failed; 0 ignored; 0 measured; 0 filtered out; finished in 1.23s [INFO] [stdout] [INFO] [stderr] error: doctest failed, to rerun pass `--doc` [INFO] running `Command { std: "docker" "inspect" "d0631ca9f3d7804223258007c052274225ad4b86748285f4a0e1d3b35cd95d4b", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "d0631ca9f3d7804223258007c052274225ad4b86748285f4a0e1d3b35cd95d4b", kill_on_drop: false }` [INFO] [stdout] d0631ca9f3d7804223258007c052274225ad4b86748285f4a0e1d3b35cd95d4b