[INFO] fetching crate wtf8-rs 1.0.0...
[INFO] testing wtf8-rs-1.0.0 against try#722e1797249a965b6335aebd65d777f917e498f1 for pr-91031
[INFO] extracting crate wtf8-rs 1.0.0 into /workspace/builds/worker-90/source
[INFO] validating manifest of crates.io crate wtf8-rs 1.0.0 on toolchain 722e1797249a965b6335aebd65d777f917e498f1
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+722e1797249a965b6335aebd65d777f917e498f1" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate wtf8-rs 1.0.0
[INFO] finished tweaking crates.io crate wtf8-rs 1.0.0
[INFO] tweaked toml for crates.io crate wtf8-rs 1.0.0 written to /workspace/builds/worker-90/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+722e1797249a965b6335aebd65d777f917e498f1" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+722e1797249a965b6335aebd65d777f917e498f1" "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-90/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-90/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@sha256:5736fa189c1c60b01babf4b8b698fe57b6ecc41933a7ff2e0b8d7a221459412b" "/opt/rustwide/cargo-home/bin/cargo" "+722e1797249a965b6335aebd65d777f917e498f1" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 11ed90b5984b0677f848d8c9b6f750da2babeedab42a9f656efc3189b783b10b
[INFO] running `Command { std: "docker" "start" "-a" "11ed90b5984b0677f848d8c9b6f750da2babeedab42a9f656efc3189b783b10b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "11ed90b5984b0677f848d8c9b6f750da2babeedab42a9f656efc3189b783b10b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "11ed90b5984b0677f848d8c9b6f750da2babeedab42a9f656efc3189b783b10b", kill_on_drop: false }`
[INFO] [stdout] 11ed90b5984b0677f848d8c9b6f750da2babeedab42a9f656efc3189b783b10b
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-90/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-90/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" "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@sha256:5736fa189c1c60b01babf4b8b698fe57b6ecc41933a7ff2e0b8d7a221459412b" "/opt/rustwide/cargo-home/bin/cargo" "+722e1797249a965b6335aebd65d777f917e498f1" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] f1928f5aa7228905f969b91e63aa162be113048f435a02fe914a5668ef2788ff
[INFO] running `Command { std: "docker" "start" "-a" "f1928f5aa7228905f969b91e63aa162be113048f435a02fe914a5668ef2788ff", kill_on_drop: false }`
[INFO] [stderr]    Compiling wtf8-rs v1.0.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.52s
[INFO] running `Command { std: "docker" "inspect" "f1928f5aa7228905f969b91e63aa162be113048f435a02fe914a5668ef2788ff", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "f1928f5aa7228905f969b91e63aa162be113048f435a02fe914a5668ef2788ff", kill_on_drop: false }`
[INFO] [stdout] f1928f5aa7228905f969b91e63aa162be113048f435a02fe914a5668ef2788ff
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-90/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-90/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" "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@sha256:5736fa189c1c60b01babf4b8b698fe57b6ecc41933a7ff2e0b8d7a221459412b" "/opt/rustwide/cargo-home/bin/cargo" "+722e1797249a965b6335aebd65d777f917e498f1" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 3e92c70bd843c37c24f8d553bdb688b5eb778ad093960479b91352e8e7532cea
[INFO] running `Command { std: "docker" "start" "-a" "3e92c70bd843c37c24f8d553bdb688b5eb778ad093960479b91352e8e7532cea", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]    Compiling wtf8-rs v1.0.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused borrow that must be used
[INFO] [stdout]   --> src/wtf8/tests.rs:29:5
[INFO] [stdout]    |
[INFO] [stdout] 29 |     &Wtf8::new("aé 💩")[2..4];
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^ the borrow produces a value
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_must_use)]` on by default
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]    |
[INFO] [stdout] 29 |     let _ = &Wtf8::new("aé 💩")[2..4];
[INFO] [stdout]    |     +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused borrow that must be used
[INFO] [stdout]   --> src/wtf8/tests.rs:40:5
[INFO] [stdout]    |
[INFO] [stdout] 40 |     &Wtf8::new("aé 💩")[2..];
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^ the borrow produces a value
[INFO] [stdout]    |
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]    |
[INFO] [stdout] 40 |     let _ = &Wtf8::new("aé 💩")[2..];
[INFO] [stdout]    |     +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused borrow that must be used
[INFO] [stdout]   --> src/wtf8/tests.rs:51:5
[INFO] [stdout]    |
[INFO] [stdout] 51 |     &Wtf8::new("aé 💩")[5..];
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^ the borrow produces a value
[INFO] [stdout]    |
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]    |
[INFO] [stdout] 51 |     let _ = &Wtf8::new("aé 💩")[5..];
[INFO] [stdout]    |     +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 3 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 2.19s
[INFO] running `Command { std: "docker" "inspect" "3e92c70bd843c37c24f8d553bdb688b5eb778ad093960479b91352e8e7532cea", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "3e92c70bd843c37c24f8d553bdb688b5eb778ad093960479b91352e8e7532cea", kill_on_drop: false }`
[INFO] [stdout] 3e92c70bd843c37c24f8d553bdb688b5eb778ad093960479b91352e8e7532cea
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-90/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-90/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" "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@sha256:5736fa189c1c60b01babf4b8b698fe57b6ecc41933a7ff2e0b8d7a221459412b" "/opt/rustwide/cargo-home/bin/cargo" "+722e1797249a965b6335aebd65d777f917e498f1" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] 0a43c947526e5f9562597a6c5810fb25f9dd3ed524913f25c6cfd85ac428e534
[INFO] running `Command { std: "docker" "start" "-a" "0a43c947526e5f9562597a6c5810fb25f9dd3ed524913f25c6cfd85ac428e534", kill_on_drop: false }`
[INFO] [stderr] warning: unused borrow that must be used
[INFO] [stderr]   --> src/wtf8/tests.rs:29:5
[INFO] [stderr]    |
[INFO] [stderr] 29 |     &Wtf8::new("aé 💩")[2..4];
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^ the borrow produces a value
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_must_use)]` on by default
[INFO] [stderr] help: use `let _ = ...` to ignore the resulting value
[INFO] [stderr]    |
[INFO] [stderr] 29 |     let _ = &Wtf8::new("aé 💩")[2..4];
[INFO] [stderr]    |     +++++++
[INFO] [stderr] 
[INFO] [stderr] warning: unused borrow that must be used
[INFO] [stderr]   --> src/wtf8/tests.rs:40:5
[INFO] [stderr]    |
[INFO] [stderr] 40 |     &Wtf8::new("aé 💩")[2..];
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^ the borrow produces a value
[INFO] [stderr]    |
[INFO] [stderr] help: use `let _ = ...` to ignore the resulting value
[INFO] [stderr]    |
[INFO] [stderr] 40 |     let _ = &Wtf8::new("aé 💩")[2..];
[INFO] [stderr]    |     +++++++
[INFO] [stderr] 
[INFO] [stderr] warning: unused borrow that must be used
[INFO] [stderr]   --> src/wtf8/tests.rs:51:5
[INFO] [stderr]    |
[INFO] [stderr] 51 |     &Wtf8::new("aé 💩")[5..];
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^ the borrow produces a value
[INFO] [stderr]    |
[INFO] [stderr] help: use `let _ = ...` to ignore the resulting value
[INFO] [stderr]    |
[INFO] [stderr] 51 |     let _ = &Wtf8::new("aé 💩")[5..];
[INFO] [stderr]    |     +++++++
[INFO] [stderr] 
[INFO] [stderr] warning: `wtf8-rs` (lib test) generated 3 warnings
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.03s
[INFO] [stderr]      Running unittests (/opt/rustwide/target/debug/deps/wtf8_rs-cdbacab9e632de8a)
[INFO] [stdout] 
[INFO] [stdout] running 38 tests
[INFO] [stdout] test codepoint::tests::code_point_from_char ... 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 codepoint::tests::code_point_to_string ... ok
[INFO] [stdout] test wtf8::tests::wtf8_as_str ... ok
[INFO] [stdout] test codepoint::tests::code_point_to_char ... ok
[INFO] [stdout] test wtf8::tests::wtf8_ascii_byte_at ... ok
[INFO] [stdout] test wtf8::tests::wtf8_code_points ... ok
[INFO] [stdout] test codepoint::tests::code_point_from_u32 ... ok
[INFO] [stdout] test wtf8::tests::wtf8_display ... ok
[INFO] [stdout] test wtf8::tests::wtf8_encode_utf16 ... ok
[INFO] [stdout] test wtf8::tests::wtf8_from_str ... 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 wtf8::tests::wtf8_to_string_lossy ... ok
[INFO] [stdout] test wtf8buf::tests::wtf8buf_as_slice ... ok
[INFO] [stdout] test wtf8buf::tests::wtf8buf_extend ... ok
[INFO] [stdout] test wtf8buf::tests::wtf8buf_from_iterator ... ok
[INFO] [stdout] test wtf8buf::tests::wtf8buf_from_str ... ok
[INFO] [stdout] test wtf8buf::tests::wtf8buf_from_string ... ok
[INFO] [stdout] test wtf8buf::tests::wtf8buf_from_utf16 ... ok
[INFO] [stdout] test wtf8buf::tests::wtf8buf_into_string ... 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_push_wtf8 ... ok
[INFO] [stdout] test wtf8buf::tests::wtf8buf_show ... ok
[INFO] [stdout] test wtf8buf::tests::wtf8buf_show_str ... ok
[INFO] [stdout] test wtf8buf::tests::wtf8buf_truncate ... ok
[INFO] [stdout] test wtf8::tests::wtf8_slice_from_not_code_point_boundary - should panic ... ok
[INFO] [stdout] test wtf8::tests::wtf8_slice_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 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. 38 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.06s
[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" "0a43c947526e5f9562597a6c5810fb25f9dd3ed524913f25c6cfd85ac428e534", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "0a43c947526e5f9562597a6c5810fb25f9dd3ed524913f25c6cfd85ac428e534", kill_on_drop: false }`
[INFO] [stdout] 0a43c947526e5f9562597a6c5810fb25f9dd3ed524913f25c6cfd85ac428e534