[INFO] fetching crate slicestring 0.3.3... [INFO] testing slicestring-0.3.3 against try#c2e32f1c9652b13ed99608599c1e855462f421f3 for pr-146098-7 [INFO] extracting crate slicestring 0.3.3 into /workspace/builds/worker-2-tc2/source [INFO] started tweaking crates.io crate slicestring 0.3.3 [INFO] finished tweaking crates.io crate slicestring 0.3.3 [INFO] tweaked toml for crates.io crate slicestring 0.3.3 written to /workspace/builds/worker-2-tc2/source/Cargo.toml [INFO] validating manifest of crates.io crate slicestring 0.3.3 on toolchain c2e32f1c9652b13ed99608599c1e855462f421f3 [INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+c2e32f1c9652b13ed99608599c1e855462f421f3" "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" "+c2e32f1c9652b13ed99608599c1e855462f421f3" "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" "+c2e32f1c9652b13ed99608599c1e855462f421f3" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }` [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-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" "+c2e32f1c9652b13ed99608599c1e855462f421f3" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }` [INFO] [stdout] 53f3c95f71cf60793153c2d5953db1564579543949ac70981dc16430921e94c7 [INFO] running `Command { std: "docker" "start" "-a" "53f3c95f71cf60793153c2d5953db1564579543949ac70981dc16430921e94c7", kill_on_drop: false }` [INFO] running `Command { std: "docker" "inspect" "53f3c95f71cf60793153c2d5953db1564579543949ac70981dc16430921e94c7", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "53f3c95f71cf60793153c2d5953db1564579543949ac70981dc16430921e94c7", kill_on_drop: false }` [INFO] [stdout] 53f3c95f71cf60793153c2d5953db1564579543949ac70981dc16430921e94c7 [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-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@sha256:4848fb76d95f26979359cc7e45710b1dbc8f3acb7aeedee7c460d7702230f228" "/opt/rustwide/cargo-home/bin/cargo" "+c2e32f1c9652b13ed99608599c1e855462f421f3" "build" "--frozen" "--message-format=json", kill_on_drop: false }` [INFO] [stdout] b0bc92c3c7b5ddf466da0986fcafc9352d7f4c281c93530f43b9c04f6d9ecf45 [INFO] running `Command { std: "docker" "start" "-a" "b0bc92c3c7b5ddf466da0986fcafc9352d7f4c281c93530f43b9c04f6d9ecf45", kill_on_drop: false }` [INFO] [stderr] Compiling slicestring v0.3.3 (/opt/rustwide/workdir) [INFO] [stdout] warning: value assigned to `y` is never read [INFO] [stdout] --> src/range.rs:12:28 [INFO] [stdout] | [INFO] [stdout] 12 | let mut y: usize = 0; [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] [stderr] Finished `dev` profile [unoptimized + debuginfo] target(s) in 0.07s [INFO] running `Command { std: "docker" "inspect" "b0bc92c3c7b5ddf466da0986fcafc9352d7f4c281c93530f43b9c04f6d9ecf45", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "b0bc92c3c7b5ddf466da0986fcafc9352d7f4c281c93530f43b9c04f6d9ecf45", kill_on_drop: false }` [INFO] [stdout] b0bc92c3c7b5ddf466da0986fcafc9352d7f4c281c93530f43b9c04f6d9ecf45 [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-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@sha256:4848fb76d95f26979359cc7e45710b1dbc8f3acb7aeedee7c460d7702230f228" "/opt/rustwide/cargo-home/bin/cargo" "+c2e32f1c9652b13ed99608599c1e855462f421f3" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }` [INFO] [stdout] 221f9bd2fe6c30fbefd56223e95dfbb9ea7ea7fb15c0eef9abcb2c3aed42c6b7 [INFO] running `Command { std: "docker" "start" "-a" "221f9bd2fe6c30fbefd56223e95dfbb9ea7ea7fb15c0eef9abcb2c3aed42c6b7", kill_on_drop: false }` [INFO] [stderr] Compiling slicestring v0.3.3 (/opt/rustwide/workdir) [INFO] [stdout] warning: value assigned to `y` is never read [INFO] [stdout] --> src/range.rs:12:28 [INFO] [stdout] | [INFO] [stdout] 12 | let mut y: usize = 0; [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: value assigned to `y` is never read [INFO] [stdout] --> src/range.rs:12:28 [INFO] [stdout] | [INFO] [stdout] 12 | let mut y: usize = 0; [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] [stderr] Finished `test` profile [unoptimized + debuginfo] target(s) in 0.21s [INFO] running `Command { std: "docker" "inspect" "221f9bd2fe6c30fbefd56223e95dfbb9ea7ea7fb15c0eef9abcb2c3aed42c6b7", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "221f9bd2fe6c30fbefd56223e95dfbb9ea7ea7fb15c0eef9abcb2c3aed42c6b7", kill_on_drop: false }` [INFO] [stdout] 221f9bd2fe6c30fbefd56223e95dfbb9ea7ea7fb15c0eef9abcb2c3aed42c6b7 [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-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@sha256:4848fb76d95f26979359cc7e45710b1dbc8f3acb7aeedee7c460d7702230f228" "/opt/rustwide/cargo-home/bin/cargo" "+c2e32f1c9652b13ed99608599c1e855462f421f3" "test" "--frozen", kill_on_drop: false }` [INFO] [stdout] 9c74260c668e599ebd0c7dc6f95b0fcc14238cf5182be83f9721cf35dfa2e00e [INFO] running `Command { std: "docker" "start" "-a" "9c74260c668e599ebd0c7dc6f95b0fcc14238cf5182be83f9721cf35dfa2e00e", kill_on_drop: false }` [INFO] [stderr] warning: value assigned to `y` is never read [INFO] [stderr] --> src/range.rs:12:28 [INFO] [stderr] | [INFO] [stderr] 12 | let mut y: usize = 0; [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: `slicestring` (lib) generated 1 warning [INFO] [stderr] warning: `slicestring` (lib test) generated 1 warning (1 duplicate) [INFO] [stderr] Finished `test` profile [unoptimized + debuginfo] target(s) in 0.02s [INFO] [stderr] Running unittests src/lib.rs (/opt/rustwide/target/debug/deps/slicestring-fe10f7c2a0438795) [INFO] [stdout] [INFO] [stdout] running 1 test [INFO] [stdout] test test ... ok [INFO] [stdout] [INFO] [stdout] test result: ok. 1 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s [INFO] [stdout] [INFO] [stderr] Doc-tests slicestring [INFO] [stdout] [INFO] [stdout] running 4 tests [INFO] [stdout] test src/lib.rs - str::slice (line 70) ... FAILED [INFO] [stdout] test src/lib.rs - (line 18) ... FAILED [INFO] [stdout] test src/lib.rs - String::slice (line 40) ... FAILED [INFO] [stdout] test src/lib.rs - (line 8) ... FAILED [INFO] [stdout] [INFO] [stdout] failures: [INFO] [stdout] [INFO] [stdout] ---- src/lib.rs - str::slice (line 70) stdout ---- [INFO] [stdout] error[E0599]: no method named `slice` found for struct `String` in the current scope [INFO] [stdout] --> src/lib.rs:72:7 [INFO] [stdout] | [INFO] [stdout] 72 | s = s.slice(..5); [INFO] [stdout] | ^^^^^ [INFO] [stdout] | [INFO] [stdout] help: there is a method `split_once` with a similar name [INFO] [stdout] | [INFO] [stdout] 72 - s = s.slice(..5); [INFO] [stdout] 72 + s = s.split_once(..5); [INFO] [stdout] | [INFO] [stdout] [INFO] [stdout] error: aborting due to 1 previous error [INFO] [stdout] [INFO] [stdout] For more information about this error, try `rustc --explain E0599`. [INFO] [stdout] Couldn't compile the test. [INFO] [stdout] ---- src/lib.rs - (line 18) stdout ---- [INFO] [stdout] error[E0599]: no method named `slice` found for struct `String` in the current scope [INFO] [stdout] --> src/lib.rs:20:7 [INFO] [stdout] | [INFO] [stdout] 20 | s = s.slice(5..); [INFO] [stdout] | ^^^^^ [INFO] [stdout] | [INFO] [stdout] help: there is a method `split_once` with a similar name [INFO] [stdout] | [INFO] [stdout] 20 - s = s.slice(5..); [INFO] [stdout] 20 + s = s.split_once(5..); [INFO] [stdout] | [INFO] [stdout] [INFO] [stdout] error: aborting due to 1 previous error [INFO] [stdout] [INFO] [stdout] For more information about this error, try `rustc --explain E0599`. [INFO] [stdout] Couldn't compile the test. [INFO] [stdout] ---- src/lib.rs - String::slice (line 40) stdout ---- [INFO] [stdout] error[E0599]: no method named `slice` found for struct `String` in the current scope [INFO] [stdout] --> src/lib.rs:42:7 [INFO] [stdout] | [INFO] [stdout] 42 | s = s.slice(..5); [INFO] [stdout] | ^^^^^ [INFO] [stdout] | [INFO] [stdout] help: there is a method `split_once` with a similar name [INFO] [stdout] | [INFO] [stdout] 42 - s = s.slice(..5); [INFO] [stdout] 42 + s = s.split_once(..5); [INFO] [stdout] | [INFO] [stdout] [INFO] [stdout] error: aborting due to 1 previous error [INFO] [stdout] [INFO] [stdout] For more information about this error, try `rustc --explain E0599`. [INFO] [stdout] Couldn't compile the test. [INFO] [stdout] ---- src/lib.rs - (line 8) stdout ---- [INFO] [stdout] error[E0308]: mismatched types [INFO] [stdout] --> src/lib.rs:13:5 [INFO] [stdout] | [INFO] [stdout] 12 | let mut s = "hello world!"; [INFO] [stdout] | -------------- expected due to this value [INFO] [stdout] 13 | s = s.slice(..5); [INFO] [stdout] | ^^^^^^^^^^^^ expected `&str`, found `String` [INFO] [stdout] | [INFO] [stdout] help: consider borrowing here [INFO] [stdout] | [INFO] [stdout] 13 | s = &s.slice(..5); [INFO] [stdout] | + [INFO] [stdout] [INFO] [stdout] error: aborting due to 1 previous error [INFO] [stdout] [INFO] [stdout] For more information about this error, try `rustc --explain E0308`. [INFO] [stdout] Couldn't compile the test. [INFO] [stdout] [INFO] [stdout] failures: [INFO] [stdout] src/lib.rs - (line 18) [INFO] [stdout] src/lib.rs - (line 8) [INFO] [stdout] src/lib.rs - String::slice (line 40) [INFO] [stdout] src/lib.rs - str::slice (line 70) [INFO] [stdout] [INFO] [stdout] test result: FAILED. 0 passed; 4 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.13s [INFO] [stdout] [INFO] [stderr] error: doctest failed, to rerun pass `--doc` [INFO] running `Command { std: "docker" "inspect" "9c74260c668e599ebd0c7dc6f95b0fcc14238cf5182be83f9721cf35dfa2e00e", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "9c74260c668e599ebd0c7dc6f95b0fcc14238cf5182be83f9721cf35dfa2e00e", kill_on_drop: false }` [INFO] [stdout] 9c74260c668e599ebd0c7dc6f95b0fcc14238cf5182be83f9721cf35dfa2e00e