[INFO] fetching crate wtf8-rs 1.1.0...
[INFO] testing wtf8-rs-1.1.0 against master#ec6f9a5b4413f74386267ef8efc93712c2ce6db6 for pr-155739-1
[INFO] extracting crate wtf8-rs 1.1.0 into /workspace/builds/worker-4-tc1/source
[INFO] started tweaking crates.io crate wtf8-rs 1.1.0
[INFO] finished tweaking crates.io crate wtf8-rs 1.1.0
[INFO] tweaked toml for crates.io crate wtf8-rs 1.1.0 written to /workspace/builds/worker-4-tc1/source/Cargo.toml
[INFO] validating manifest of crates.io crate wtf8-rs 1.1.0 on toolchain ec6f9a5b4413f74386267ef8efc93712c2ce6db6
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+ec6f9a5b4413f74386267ef8efc93712c2ce6db6" "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" "+ec6f9a5b4413f74386267ef8efc93712c2ce6db6" "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" "+ec6f9a5b4413f74386267ef8efc93712c2ce6db6" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/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" "+ec6f9a5b4413f74386267ef8efc93712c2ce6db6" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] f85e3137868f1ecf67012f19fc0fcbaa91d8f692bf8db9f1841f44e29be56d11
[INFO] running `Command { std: "docker" "start" "-a" "f85e3137868f1ecf67012f19fc0fcbaa91d8f692bf8db9f1841f44e29be56d11", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "f85e3137868f1ecf67012f19fc0fcbaa91d8f692bf8db9f1841f44e29be56d11", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "f85e3137868f1ecf67012f19fc0fcbaa91d8f692bf8db9f1841f44e29be56d11", kill_on_drop: false }`
[INFO] [stdout] f85e3137868f1ecf67012f19fc0fcbaa91d8f692bf8db9f1841f44e29be56d11
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/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" "+ec6f9a5b4413f74386267ef8efc93712c2ce6db6" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] d17e86de997e68526979ba132a57632ea452efbc5abc0fcbe62deac757827b1b
[INFO] running `Command { std: "docker" "start" "-a" "d17e86de997e68526979ba132a57632ea452efbc5abc0fcbe62deac757827b1b", kill_on_drop: false }`
[INFO] [stderr]    Compiling wtf8-rs v1.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stdout]    --> src/wtf8/mod.rs:103:19
[INFO] [stdout]     |
[INFO] [stdout] 103 |     pub fn chunks(&self) -> Chunks {
[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] 103 |     pub fn chunks(&self) -> Chunks<'_> {
[INFO] [stdout]     |                                   ++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stdout]    --> src/wtf8/mod.rs:113:28
[INFO] [stdout]     |
[INFO] [stdout] 113 |     pub fn to_string_lossy(&self) -> Cow<str> {
[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] 113 |     pub fn to_string_lossy(&self) -> Cow<'_, str> {
[INFO] [stdout]     |                                          +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 0.65s
[INFO] running `Command { std: "docker" "inspect" "d17e86de997e68526979ba132a57632ea452efbc5abc0fcbe62deac757827b1b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "d17e86de997e68526979ba132a57632ea452efbc5abc0fcbe62deac757827b1b", kill_on_drop: false }`
[INFO] [stdout] d17e86de997e68526979ba132a57632ea452efbc5abc0fcbe62deac757827b1b
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/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" "+ec6f9a5b4413f74386267ef8efc93712c2ce6db6" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] b150a8ba83090de424855fa6df92ac106ecb04eee0bd433031ad116e0d05a88b
[INFO] running `Command { std: "docker" "start" "-a" "b150a8ba83090de424855fa6df92ac106ecb04eee0bd433031ad116e0d05a88b", kill_on_drop: false }`
[INFO] [stdout] warning: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stdout]    --> src/wtf8/mod.rs:103:19
[INFO] [stdout]     |
[INFO] [stdout] 103 |     pub fn chunks(&self) -> Chunks {
[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] 103 |     pub fn chunks(&self) -> Chunks<'_> {
[INFO] [stdout]     |                                   ++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stdout]    --> src/wtf8/mod.rs:113:28
[INFO] [stdout]     |
[INFO] [stdout] 113 |     pub fn to_string_lossy(&self) -> Cow<str> {
[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] 113 |     pub fn to_string_lossy(&self) -> Cow<'_, str> {
[INFO] [stdout]     |                                          +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]    Compiling wtf8-rs v1.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stdout]    --> src/wtf8/mod.rs:103:19
[INFO] [stdout]     |
[INFO] [stdout] 103 |     pub fn chunks(&self) -> Chunks {
[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] 103 |     pub fn chunks(&self) -> Chunks<'_> {
[INFO] [stdout]     |                                   ++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stdout]    --> src/wtf8/mod.rs:113:28
[INFO] [stdout]     |
[INFO] [stdout] 113 |     pub fn to_string_lossy(&self) -> Cow<str> {
[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] 113 |     pub fn to_string_lossy(&self) -> Cow<'_, str> {
[INFO] [stdout]     |                                          +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 1.44s
[INFO] running `Command { std: "docker" "inspect" "b150a8ba83090de424855fa6df92ac106ecb04eee0bd433031ad116e0d05a88b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "b150a8ba83090de424855fa6df92ac106ecb04eee0bd433031ad116e0d05a88b", kill_on_drop: false }`
[INFO] [stdout] b150a8ba83090de424855fa6df92ac106ecb04eee0bd433031ad116e0d05a88b
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/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" "+ec6f9a5b4413f74386267ef8efc93712c2ce6db6" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] 6ed954a30dd879a561206f807a0eb6391c227c1ae95e922085d70124db7bb9a6
[INFO] running `Command { std: "docker" "start" "-a" "6ed954a30dd879a561206f807a0eb6391c227c1ae95e922085d70124db7bb9a6", kill_on_drop: false }`
[INFO] [stderr] warning: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stderr]    --> src/wtf8/mod.rs:103:19
[INFO] [stderr]     |
[INFO] [stderr] 103 |     pub fn chunks(&self) -> Chunks {
[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] 103 |     pub fn chunks(&self) -> Chunks<'_> {
[INFO] [stderr]     |                                   ++++
[INFO] [stderr] 
[INFO] [stderr] warning: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stderr]    --> src/wtf8/mod.rs:113:28
[INFO] [stderr]     |
[INFO] [stderr] 113 |     pub fn to_string_lossy(&self) -> Cow<str> {
[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] 113 |     pub fn to_string_lossy(&self) -> Cow<'_, str> {
[INFO] [stderr]     |                                          +++
[INFO] [stderr] 
[INFO] [stderr] warning: `wtf8-rs` (lib) generated 2 warnings (run `cargo fix --lib -p wtf8-rs` to apply 2 suggestions)
[INFO] [stderr] warning: `wtf8-rs` (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/wtf8_rs-f4d53b37a9e8d717)
[INFO] [stdout] 
[INFO] [stdout] running 39 tests
[INFO] [stdout] test codepoint::tests::code_point_from_char ... ok
[INFO] [stdout] test codepoint::tests::code_point_to_char ... ok
[INFO] [stdout] test codepoint::tests::code_point_from_u32 ... ok
[INFO] [stdout] test codepoint::tests::code_point_to_char_lossy ... ok
[INFO] [stdout] test codepoint::tests::code_point_to_u32 ... ok
[INFO] [stdout] test wtf8::tests::wtf8_as_str ... ok
[INFO] [stdout] test wtf8::tests::wtf8_ascii_byte_at ... ok
[INFO] [stdout] test wtf8::tests::wtf8_chunks ... ok
[INFO] [stdout] test wtf8::tests::wtf8_code_points ... ok
[INFO] [stdout] test wtf8::tests::wtf8_encode_utf16 ... ok
[INFO] [stdout] test wtf8::tests::wtf8_from_str ... ok
[INFO] [stdout] test codepoint::tests::code_point_to_string ... ok
[INFO] [stdout] test wtf8::tests::wtf8_display ... ok
[INFO] [stdout] test wtf8::tests::wtf8_len ... ok
[INFO] [stdout] test wtf8::tests::wtf8_slice ... ok
[INFO] [stdout] test wtf8::tests::wtf8_slice_from ... ok
[INFO] [stdout] test wtf8::tests::wtf8_slice_to ... ok
[INFO] [stdout] test wtf8buf::tests::wtf8buf_as_slice ... ok
[INFO] [stdout] test wtf8buf::tests::wtf8buf_from_iterator ... ok
[INFO] [stdout] test wtf8buf::tests::wtf8buf_from_str ... ok
[INFO] [stdout] test wtf8::tests::wtf8_to_string_lossy ... ok
[INFO] [stdout] test wtf8buf::tests::wtf8buf_push_wtf8 ... ok
[INFO] [stdout] test wtf8buf::tests::wtf8buf_into_string_lossy ... ok
[INFO] [stdout] test wtf8buf::tests::wtf8buf_new ... ok
[INFO] [stdout] test wtf8buf::tests::wtf8buf_push ... ok
[INFO] [stdout] test wtf8buf::tests::wtf8buf_push_char ... ok
[INFO] [stdout] test wtf8buf::tests::wtf8buf_push_str ... ok
[INFO] [stdout] test wtf8buf::tests::wtf8buf_from_string ... ok
[INFO] [stdout] test wtf8buf::tests::wtf8buf_extend ... ok
[INFO] [stdout] test wtf8buf::tests::wtf8buf_show ... ok
[INFO] [stdout] test wtf8buf::tests::wtf8buf_into_string ... ok
[INFO] [stdout] test wtf8buf::tests::wtf8buf_from_utf16 ... ok
[INFO] [stdout] test wtf8buf::tests::wtf8buf_truncate ... ok
[INFO] [stdout] test wtf8buf::tests::wtf8buf_show_str ... ok
[INFO] [stdout] test wtf8::tests::wtf8_slice_from_not_code_point_boundary - should panic ... ok
[INFO] [stdout] test wtf8::tests::wtf8_slice_to_not_code_point_boundary - should panic ... ok
[INFO] [stdout] test wtf8::tests::wtf8_slice_not_code_point_boundary - should panic ... ok
[INFO] [stdout] test wtf8buf::tests::wtf8buf_truncate_fail_code_point_boundary - should panic ... ok
[INFO] [stdout] test wtf8buf::tests::wtf8buf_truncate_fail_longer - should panic ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 39 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.04s
[INFO] [stdout] 
[INFO] [stderr]    Doc-tests wtf8_rs
[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" "6ed954a30dd879a561206f807a0eb6391c227c1ae95e922085d70124db7bb9a6", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "6ed954a30dd879a561206f807a0eb6391c227c1ae95e922085d70124db7bb9a6", kill_on_drop: false }`
[INFO] [stdout] 6ed954a30dd879a561206f807a0eb6391c227c1ae95e922085d70124db7bb9a6
