[INFO] fetching crate async-editor 0.1.3...
[INFO] testing async-editor-0.1.3 against master#cdb45c87e2cd43495379f7e867e3cc15dcee9f93 for pr-145838-1
[INFO] extracting crate async-editor 0.1.3 into /workspace/builds/worker-5-tc1/source
[INFO] started tweaking crates.io crate async-editor 0.1.3
[INFO] finished tweaking crates.io crate async-editor 0.1.3
[INFO] tweaked toml for crates.io crate async-editor 0.1.3 written to /workspace/builds/worker-5-tc1/source/Cargo.toml
[INFO] validating manifest of crates.io crate async-editor 0.1.3 on toolchain cdb45c87e2cd43495379f7e867e3cc15dcee9f93
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+cdb45c87e2cd43495379f7e867e3cc15dcee9f93" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate crates.io crate async-editor 0.1.3 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" "+cdb45c87e2cd43495379f7e867e3cc15dcee9f93" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded grapheme-utils v0.1.0
[INFO] [stderr]   Downloaded historybuffer v0.1.1
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-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@sha256:7ad1b28ee6f5f7f699f6cf7015098d6ccdd96d6f2d78dd06228f5b4c9faf309c" "/opt/rustwide/cargo-home/bin/cargo" "+cdb45c87e2cd43495379f7e867e3cc15dcee9f93" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] a903831a79ea061aaabbeab1f5d810587923ffacae1e4875c128e2589c12a3de
[INFO] running `Command { std: "docker" "start" "-a" "a903831a79ea061aaabbeab1f5d810587923ffacae1e4875c128e2589c12a3de", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "a903831a79ea061aaabbeab1f5d810587923ffacae1e4875c128e2589c12a3de", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "a903831a79ea061aaabbeab1f5d810587923ffacae1e4875c128e2589c12a3de", kill_on_drop: false }`
[INFO] [stdout] a903831a79ea061aaabbeab1f5d810587923ffacae1e4875c128e2589c12a3de
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-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@sha256:7ad1b28ee6f5f7f699f6cf7015098d6ccdd96d6f2d78dd06228f5b4c9faf309c" "/opt/rustwide/cargo-home/bin/cargo" "+cdb45c87e2cd43495379f7e867e3cc15dcee9f93" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] b09b224b2a1fa3821eebcbf7a921f0bb1f52f36bd1f928280c428a8a6b507ac1
[INFO] running `Command { std: "docker" "start" "-a" "b09b224b2a1fa3821eebcbf7a921f0bb1f52f36bd1f928280c428a8a6b507ac1", kill_on_drop: false }`
[INFO] [stderr]    Compiling syn v2.0.104
[INFO] [stderr]    Compiling signal-hook v0.3.18
[INFO] [stderr]    Compiling smallvec v1.15.1
[INFO] [stderr]    Compiling rustix v1.0.8
[INFO] [stderr]    Compiling futures-core v0.3.31
[INFO] [stderr]    Compiling bitflags v2.9.1
[INFO] [stderr]    Compiling litrs v0.4.2
[INFO] [stderr]    Compiling slab v0.4.10
[INFO] [stderr]    Compiling unicode-width v0.2.1
[INFO] [stderr]    Compiling futures-io v0.3.31
[INFO] [stderr]    Compiling parking_lot_core v0.9.11
[INFO] [stderr]    Compiling signal-hook-mio v0.2.4
[INFO] [stderr]    Compiling grapheme-utils v0.1.0
[INFO] [stderr]    Compiling historybuffer v0.1.1
[INFO] [stderr]    Compiling parking_lot v0.12.4
[INFO] [stderr]    Compiling document-features v0.2.11
[INFO] [stderr]    Compiling pin-project-internal v1.1.10
[INFO] [stderr]    Compiling derive_more-impl v2.0.1
[INFO] [stderr]    Compiling futures-macro v0.3.31
[INFO] [stderr]    Compiling derive_more-impl v1.0.0
[INFO] [stderr]    Compiling thiserror-impl v2.0.12
[INFO] [stderr]    Compiling derive_more v2.0.1
[INFO] [stderr]    Compiling derive_more v1.0.0
[INFO] [stderr]    Compiling crossterm v0.29.0
[INFO] [stderr]    Compiling futures-util v0.3.31
[INFO] [stderr]    Compiling pin-project v1.1.10
[INFO] [stderr]    Compiling thingbuf v0.1.6
[INFO] [stderr]    Compiling thiserror v2.0.12
[INFO] [stderr]    Compiling async-editor v0.1.3 (/opt/rustwide/workdir)
[INFO] [stdout] warning: value assigned to `revbuf` is never read
[INFO] [stdout]    --> src/lib.rs:984:17
[INFO] [stdout]     |
[INFO] [stdout] 984 |         let mut revbuf: Vec<u8> = vec![];
[INFO] [stdout]     |                 ^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = help: maybe it is overwritten before being read?
[INFO] [stdout]     = note: `#[warn(unused_assignments)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `next_grapheme_from_idx` is never used
[INFO] [stdout]    --> src/lib.rs:686:8
[INFO] [stdout]     |
[INFO] [stdout] 237 | impl Editor {
[INFO] [stdout]     | ----------- method in this implementation
[INFO] [stdout] ...
[INFO] [stdout] 686 |     fn next_grapheme_from_idx(&self, idx: usize) -> &str {
[INFO] [stdout]     |        ^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 20.04s
[INFO] running `Command { std: "docker" "inspect" "b09b224b2a1fa3821eebcbf7a921f0bb1f52f36bd1f928280c428a8a6b507ac1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "b09b224b2a1fa3821eebcbf7a921f0bb1f52f36bd1f928280c428a8a6b507ac1", kill_on_drop: false }`
[INFO] [stdout] b09b224b2a1fa3821eebcbf7a921f0bb1f52f36bd1f928280c428a8a6b507ac1
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-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@sha256:7ad1b28ee6f5f7f699f6cf7015098d6ccdd96d6f2d78dd06228f5b4c9faf309c" "/opt/rustwide/cargo-home/bin/cargo" "+cdb45c87e2cd43495379f7e867e3cc15dcee9f93" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 4ea9706fdc5086624ff158f50ba27779d2edd396103a761b60291bfd6a86f510
[INFO] running `Command { std: "docker" "start" "-a" "4ea9706fdc5086624ff158f50ba27779d2edd396103a761b60291bfd6a86f510", kill_on_drop: false }`
[INFO] [stderr]    Compiling tokio-macros v2.5.0
[INFO] [stderr]    Compiling tokio v1.47.0
[INFO] [stderr]    Compiling async-editor v0.1.3 (/opt/rustwide/workdir)
[INFO] [stdout] warning: value assigned to `revbuf` is never read
[INFO] [stdout]    --> src/lib.rs:984:17
[INFO] [stdout]     |
[INFO] [stdout] 984 |         let mut revbuf: Vec<u8> = vec![];
[INFO] [stdout]     |                 ^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = help: maybe it is overwritten before being read?
[INFO] [stdout]     = note: `#[warn(unused_assignments)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `next_grapheme_from_idx` is never used
[INFO] [stdout]    --> src/lib.rs:686:8
[INFO] [stdout]     |
[INFO] [stdout] 237 | impl Editor {
[INFO] [stdout]     | ----------- method in this implementation
[INFO] [stdout] ...
[INFO] [stdout] 686 |     fn next_grapheme_from_idx(&self, idx: usize) -> &str {
[INFO] [stdout]     |        ^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 10.82s
[INFO] running `Command { std: "docker" "inspect" "4ea9706fdc5086624ff158f50ba27779d2edd396103a761b60291bfd6a86f510", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "4ea9706fdc5086624ff158f50ba27779d2edd396103a761b60291bfd6a86f510", kill_on_drop: false }`
[INFO] [stdout] 4ea9706fdc5086624ff158f50ba27779d2edd396103a761b60291bfd6a86f510
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-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@sha256:7ad1b28ee6f5f7f699f6cf7015098d6ccdd96d6f2d78dd06228f5b4c9faf309c" "/opt/rustwide/cargo-home/bin/cargo" "+cdb45c87e2cd43495379f7e867e3cc15dcee9f93" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] df7971c0d6bbe6612d2a2d6b00f4ed7035fa83de18427e001d9b5b34226d190b
[INFO] running `Command { std: "docker" "start" "-a" "df7971c0d6bbe6612d2a2d6b00f4ed7035fa83de18427e001d9b5b34226d190b", kill_on_drop: false }`
[INFO] [stderr] warning: value assigned to `revbuf` is never read
[INFO] [stderr]    --> src/lib.rs:984:17
[INFO] [stderr]     |
[INFO] [stderr] 984 |         let mut revbuf: Vec<u8> = vec![];
[INFO] [stderr]     |                 ^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = help: maybe it is overwritten before being read?
[INFO] [stderr]     = note: `#[warn(unused_assignments)]` (part of `#[warn(unused)]`) on by default
[INFO] [stderr] 
[INFO] [stderr] warning: method `next_grapheme_from_idx` is never used
[INFO] [stderr]    --> src/lib.rs:686:8
[INFO] [stderr]     |
[INFO] [stderr] 237 | impl Editor {
[INFO] [stderr]     | ----------- method in this implementation
[INFO] [stderr] ...
[INFO] [stderr] 686 |     fn next_grapheme_from_idx(&self, idx: usize) -> &str {
[INFO] [stderr]     |        ^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stderr] 
[INFO] [stderr] warning: `async-editor` (lib test) generated 2 warnings
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.14s
[INFO] [stderr]      Running unittests src/lib.rs (/opt/rustwide/target/debug/deps/async_editor-67b567d3da0336c1)
[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" "df7971c0d6bbe6612d2a2d6b00f4ed7035fa83de18427e001d9b5b34226d190b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "df7971c0d6bbe6612d2a2d6b00f4ed7035fa83de18427e001d9b5b34226d190b", kill_on_drop: false }`
[INFO] [stdout] df7971c0d6bbe6612d2a2d6b00f4ed7035fa83de18427e001d9b5b34226d190b