[INFO] fetching crate subslice-offset 0.1.1...
[INFO] testing subslice-offset-0.1.1 against beta-2025-10-28 for beta-1.92-2
[INFO] extracting crate subslice-offset 0.1.1 into /workspace/builds/worker-6-tc2/source
[INFO] started tweaking crates.io crate subslice-offset 0.1.1
[INFO] finished tweaking crates.io crate subslice-offset 0.1.1
[INFO] tweaked toml for crates.io crate subslice-offset 0.1.1 written to /workspace/builds/worker-6-tc2/source/Cargo.toml
[INFO] validating manifest of crates.io crate subslice-offset 0.1.1 on toolchain beta-2025-10-28
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+beta-2025-10-28" "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" "+beta-2025-10-28" "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" "+beta-2025-10-28" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[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@sha256:4848fb76d95f26979359cc7e45710b1dbc8f3acb7aeedee7c460d7702230f228" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2025-10-28" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] a0ff81caec791fd24f63d19d22f4cac323a00796baa604a8ae1f58ab4fea06ea
[INFO] running `Command { std: "docker" "start" "-a" "a0ff81caec791fd24f63d19d22f4cac323a00796baa604a8ae1f58ab4fea06ea", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "a0ff81caec791fd24f63d19d22f4cac323a00796baa604a8ae1f58ab4fea06ea", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "a0ff81caec791fd24f63d19d22f4cac323a00796baa604a8ae1f58ab4fea06ea", kill_on_drop: false }`
[INFO] [stdout] a0ff81caec791fd24f63d19d22f4cac323a00796baa604a8ae1f58ab4fea06ea
[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=warn" "-e" "RUSTDOCFLAGS=--cap-lints=warn" "-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@sha256:4848fb76d95f26979359cc7e45710b1dbc8f3acb7aeedee7c460d7702230f228" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2025-10-28" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 4bd73e30eabf62d2daabbdfc103171de209ed10d3ba984d6b492a8a4891efb2c
[INFO] running `Command { std: "docker" "start" "-a" "4bd73e30eabf62d2daabbdfc103171de209ed10d3ba984d6b492a8a4891efb2c", kill_on_drop: false }`
[INFO] [stderr]    Compiling subslice-offset v0.1.1 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 0.16s
[INFO] running `Command { std: "docker" "inspect" "4bd73e30eabf62d2daabbdfc103171de209ed10d3ba984d6b492a8a4891efb2c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "4bd73e30eabf62d2daabbdfc103171de209ed10d3ba984d6b492a8a4891efb2c", kill_on_drop: false }`
[INFO] [stdout] 4bd73e30eabf62d2daabbdfc103171de209ed10d3ba984d6b492a8a4891efb2c
[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=warn" "-e" "RUSTDOCFLAGS=--cap-lints=warn" "-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@sha256:4848fb76d95f26979359cc7e45710b1dbc8f3acb7aeedee7c460d7702230f228" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2025-10-28" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 6447e9f2240b800de0e06920b82ebc52b4b965d400e566bd61d70e36334c91e4
[INFO] running `Command { std: "docker" "start" "-a" "6447e9f2240b800de0e06920b82ebc52b4b965d400e566bd61d70e36334c91e4", kill_on_drop: false }`
[INFO] [stderr]    Compiling subslice-offset v0.1.1 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.20s
[INFO] running `Command { std: "docker" "inspect" "6447e9f2240b800de0e06920b82ebc52b4b965d400e566bd61d70e36334c91e4", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "6447e9f2240b800de0e06920b82ebc52b4b965d400e566bd61d70e36334c91e4", kill_on_drop: false }`
[INFO] [stdout] 6447e9f2240b800de0e06920b82ebc52b4b965d400e566bd61d70e36334c91e4
[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=warn" "-e" "RUSTDOCFLAGS=--cap-lints=warn" "-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@sha256:4848fb76d95f26979359cc7e45710b1dbc8f3acb7aeedee7c460d7702230f228" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2025-10-28" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] c49369e2c57e7ae5223acb2155b771fa54f4d5d129475d044e5174e942097264
[INFO] running `Command { std: "docker" "start" "-a" "c49369e2c57e7ae5223acb2155b771fa54f4d5d129475d044e5174e942097264", kill_on_drop: false }`
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.02s
[INFO] [stderr]      Running unittests src/lib.rs (/opt/rustwide/target/debug/deps/subslice_offset-9b0d6697965a2a51)
[INFO] [stdout] 
[INFO] [stdout] running 0 tests
[INFO] [stderr]    Doc-tests subslice_offset
[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] [stdout] 
[INFO] [stdout] running 1 test
[INFO] [stdout] test src/lib.rs - SubsliceOffset::subslice_offset (line 11) ... FAILED
[INFO] [stdout] 
[INFO] [stdout] failures:
[INFO] [stdout] 
[INFO] [stdout] ---- src/lib.rs - SubsliceOffset::subslice_offset (line 11) stdout ----
[INFO] [stdout] error[E0599]: no method named `subslice_offset` found for reference `&str` in the current scope
[INFO] [stdout]  --> src/lib.rs:15:19
[INFO] [stdout]   |
[INFO] [stdout] 7 | assert_eq!(string.subslice_offset(lines[0]), Some(0)); // &"a"
[INFO] [stdout]   |                   ^^^^^^^^^^^^^^^ method not found in `&str`
[INFO] [stdout]   |
[INFO] [stdout]   = help: items from traits can only be used if the trait is in scope
[INFO] [stdout] help: trait `SubsliceOffset` which provides `subslice_offset` is implemented but not in scope; perhaps you want to import it
[INFO] [stdout]   |
[INFO] [stdout] 2 + use crate::subslice_offset::SubsliceOffset;
[INFO] [stdout]   |
[INFO] [stdout] 
[INFO] [stdout] error[E0599]: no method named `subslice_offset` found for reference `&str` in the current scope
[INFO] [stdout]  --> src/lib.rs:16:19
[INFO] [stdout]   |
[INFO] [stdout] 8 | assert_eq!(string.subslice_offset(lines[1]), Some(2)); // &"b"
[INFO] [stdout]   |                   ^^^^^^^^^^^^^^^ method not found in `&str`
[INFO] [stdout]   |
[INFO] [stdout]   = help: items from traits can only be used if the trait is in scope
[INFO] [stdout] help: trait `SubsliceOffset` which provides `subslice_offset` is implemented but not in scope; perhaps you want to import it
[INFO] [stdout]   |
[INFO] [stdout] 2 + use crate::subslice_offset::SubsliceOffset;
[INFO] [stdout]   |
[INFO] [stdout] 
[INFO] [stdout] error[E0599]: no method named `subslice_offset` found for reference `&str` in the current scope
[INFO] [stdout]  --> src/lib.rs:17:19
[INFO] [stdout]   |
[INFO] [stdout] 9 | assert_eq!(string.subslice_offset(lines[2]), Some(4)); // &"c"
[INFO] [stdout]   |                   ^^^^^^^^^^^^^^^ method not found in `&str`
[INFO] [stdout]   |
[INFO] [stdout]   = help: items from traits can only be used if the trait is in scope
[INFO] [stdout] help: trait `SubsliceOffset` which provides `subslice_offset` is implemented but not in scope; perhaps you want to import it
[INFO] [stdout]   |
[INFO] [stdout] 2 + use crate::subslice_offset::SubsliceOffset;
[INFO] [stdout]   |
[INFO] [stdout] 
[INFO] [stdout] error[E0599]: no method named `subslice_offset` found for reference `&str` in the current scope
[INFO] [stdout]   --> src/lib.rs:18:19
[INFO] [stdout]    |
[INFO] [stdout] 10 | assert_eq!(string.subslice_offset("other!"), None);
[INFO] [stdout]    |                   ^^^^^^^^^^^^^^^ method not found in `&str`
[INFO] [stdout]    |
[INFO] [stdout]    = help: items from traits can only be used if the trait is in scope
[INFO] [stdout] help: trait `SubsliceOffset` which provides `subslice_offset` is implemented but not in scope; perhaps you want to import it
[INFO] [stdout]    |
[INFO] [stdout]  2 + use crate::subslice_offset::SubsliceOffset;
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 4 previous errors
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0599`.
[INFO] [stdout] Couldn't compile the test.
[INFO] [stdout] 
[INFO] [stdout] failures:
[INFO] [stdout]     src/lib.rs - SubsliceOffset::subslice_offset (line 11)
[INFO] [stdout] 
[INFO] [stdout] test result: FAILED. 0 passed; 1 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.09s
[INFO] [stdout] 
[INFO] [stderr] error: doctest failed, to rerun pass `--doc`
[INFO] running `Command { std: "docker" "inspect" "c49369e2c57e7ae5223acb2155b771fa54f4d5d129475d044e5174e942097264", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "c49369e2c57e7ae5223acb2155b771fa54f4d5d129475d044e5174e942097264", kill_on_drop: false }`
[INFO] [stdout] c49369e2c57e7ae5223acb2155b771fa54f4d5d129475d044e5174e942097264