[INFO] cloning repository https://github.com/YanLong-111/RustLearning-RustSlice [INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/YanLong-111/RustLearning-RustSlice" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FYanLong-111%2FRustLearning-RustSlice", kill_on_drop: false }` [INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FYanLong-111%2FRustLearning-RustSlice'... [INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }` [INFO] [stdout] b89d0bba490b25f76846ca5ebdb6bf3bcbeffca3 [INFO] checking YanLong-111/RustLearning-RustSlice/b89d0bba490b25f76846ca5ebdb6bf3bcbeffca3 against try#52ae2445414b2a196b318d85c2819995c6e5f1aa for pr-133397 [INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FYanLong-111%2FRustLearning-RustSlice" "/workspace/builds/worker-3-tc2/source", kill_on_drop: false }` [INFO] [stderr] Cloning into '/workspace/builds/worker-3-tc2/source'... [INFO] [stderr] done. [INFO] validating manifest of git repo https://github.com/YanLong-111/RustLearning-RustSlice on toolchain 52ae2445414b2a196b318d85c2819995c6e5f1aa [INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+52ae2445414b2a196b318d85c2819995c6e5f1aa" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }` [INFO] started tweaking git repo https://github.com/YanLong-111/RustLearning-RustSlice [INFO] finished tweaking git repo https://github.com/YanLong-111/RustLearning-RustSlice [INFO] tweaked toml for git repo https://github.com/YanLong-111/RustLearning-RustSlice written to /workspace/builds/worker-3-tc2/source/Cargo.toml [INFO] crate git repo https://github.com/YanLong-111/RustLearning-RustSlice 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" "+52ae2445414b2a196b318d85c2819995c6e5f1aa" "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-3-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-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@sha256:4a844ea9eb2546a2d2c7022eacef16ef2e8229c7fbb2c7d4d55a9ceca922f72d" "/opt/rustwide/cargo-home/bin/cargo" "+52ae2445414b2a196b318d85c2819995c6e5f1aa" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }` [INFO] [stdout] bbc805f05fb8cc9887fcc0ebb443b66f261117459d7d50d1bb84b6139d4cd955 [INFO] running `Command { std: "docker" "start" "-a" "bbc805f05fb8cc9887fcc0ebb443b66f261117459d7d50d1bb84b6139d4cd955", kill_on_drop: false }` [INFO] running `Command { std: "docker" "inspect" "bbc805f05fb8cc9887fcc0ebb443b66f261117459d7d50d1bb84b6139d4cd955", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "bbc805f05fb8cc9887fcc0ebb443b66f261117459d7d50d1bb84b6139d4cd955", kill_on_drop: false }` [INFO] [stdout] bbc805f05fb8cc9887fcc0ebb443b66f261117459d7d50d1bb84b6139d4cd955 [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-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@sha256:4a844ea9eb2546a2d2c7022eacef16ef2e8229c7fbb2c7d4d55a9ceca922f72d" "/opt/rustwide/cargo-home/bin/cargo" "+52ae2445414b2a196b318d85c2819995c6e5f1aa" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }` [INFO] [stdout] bc67a2b55bffd7db709b3c726c9889fcc7ed82700e61bdd84e48731cb6bdd8fd [INFO] running `Command { std: "docker" "start" "-a" "bc67a2b55bffd7db709b3c726c9889fcc7ed82700e61bdd84e48731cb6bdd8fd", kill_on_drop: false }` [INFO] [stderr] Checking RustLearning-RustSlice v0.1.0 (/opt/rustwide/workdir) [INFO] [stdout] warning: unused variable: `b` [INFO] [stdout] --> src/main.rs:12:9 [INFO] [stdout] | [INFO] [stdout] 12 | let b = &a[0..5]; [INFO] [stdout] | ^ help: if this is intentional, prefix it with an underscore: `_b` [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_variables)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `b` [INFO] [stdout] --> src/main.rs:12:9 [INFO] [stdout] | [INFO] [stdout] 12 | let b = &a[0..5]; [INFO] [stdout] | ^ help: if this is intentional, prefix it with an underscore: `_b` [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_variables)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `c` [INFO] [stdout] --> src/main.rs:13:9 [INFO] [stdout] | [INFO] [stdout] 13 | let c = &a[6..11]; [INFO] [stdout] | ^ help: if this is intentional, prefix it with an underscore: `_c` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `c` [INFO] [stdout] --> src/main.rs:13:9 [INFO] [stdout] | [INFO] [stdout] 13 | let c = &a[6..11]; [INFO] [stdout] | ^ help: if this is intentional, prefix it with an underscore: `_c` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `e` [INFO] [stdout] --> src/main.rs:15:9 [INFO] [stdout] | [INFO] [stdout] 15 | let e = &a[..]; [INFO] [stdout] | ^ help: if this is intentional, prefix it with an underscore: `_e` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `e` [INFO] [stdout] --> src/main.rs:15:9 [INFO] [stdout] | [INFO] [stdout] 15 | let e = &a[..]; [INFO] [stdout] | ^ help: if this is intentional, prefix it with an underscore: `_e` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `i1` [INFO] [stdout] --> src/main.rs:39:9 [INFO] [stdout] | [INFO] [stdout] 39 | let i1 = &i[..3];//存储为数组的指针和长度 [INFO] [stdout] | ^^ help: if this is intentional, prefix it with an underscore: `_i1` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `i1` [INFO] [stdout] --> src/main.rs:39:9 [INFO] [stdout] | [INFO] [stdout] 39 | let i1 = &i[..3];//存储为数组的指针和长度 [INFO] [stdout] | ^^ help: if this is intentional, prefix it with an underscore: `_i1` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `slice` [INFO] [stdout] --> src/main.rs:43:9 [INFO] [stdout] | [INFO] [stdout] 43 | let slice = &j[1..3];//存储类型为j数组的指针 [INFO] [stdout] | ^^^^^ help: if this is intentional, prefix it with an underscore: `_slice` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `slice` [INFO] [stdout] --> src/main.rs:43:9 [INFO] [stdout] | [INFO] [stdout] 43 | let slice = &j[1..3];//存储类型为j数组的指针 [INFO] [stdout] | ^^^^^ help: if this is intentional, prefix it with an underscore: `_slice` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] error[E0502]: cannot borrow `f` as mutable because it is also borrowed as immutable [INFO] [stdout] --> src/main.rs:21:5 [INFO] [stdout] | [INFO] [stdout] 19 | let worldTwo = first_worldTwo(&f); [INFO] [stdout] | -- immutable borrow occurs here [INFO] [stdout] 20 | //此时清空字符串方法将报错，因为该变量已经成为不可变的 [INFO] [stdout] 21 | f.clear(); [INFO] [stdout] | ^^^^^^^^^ mutable borrow occurs here [INFO] [stdout] 22 | println!("{}", worldTwo); [INFO] [stdout] | -------- immutable borrow later used here [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] error[E0502]: cannot borrow `f` as mutable because it is also borrowed as immutable [INFO] [stdout] --> src/main.rs:21:5 [INFO] [stdout] | [INFO] [stdout] 19 | let worldTwo = first_worldTwo(&f); [INFO] [stdout] | -- immutable borrow occurs here [INFO] [stdout] 20 | //此时清空字符串方法将报错，因为该变量已经成为不可变的 [INFO] [stdout] 21 | f.clear(); [INFO] [stdout] | ^^^^^^^^^ mutable borrow occurs here [INFO] [stdout] 22 | println!("{}", worldTwo); [INFO] [stdout] | -------- immutable borrow later used here [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] error[E0502]: cannot borrow `g` as mutable because it is also borrowed as immutable [INFO] [stdout] --> src/main.rs:28:5 [INFO] [stdout] | [INFO] [stdout] 26 | let worldThree = first_worldThree(&g[..]);//传入该字符串的整个字符串切片 [INFO] [stdout] | - immutable borrow occurs here [INFO] [stdout] 27 | //此时清空字符串方法将报错，因为该变量已经成为不可变的 [INFO] [stdout] 28 | g.clear(); [INFO] [stdout] | ^^^^^^^^^ mutable borrow occurs here [INFO] [stdout] 29 | println!("{}", worldThree); [INFO] [stdout] | ---------- immutable borrow later used here [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] error[E0502]: cannot borrow `g` as mutable because it is also borrowed as immutable [INFO] [stdout] --> src/main.rs:28:5 [INFO] [stdout] | [INFO] [stdout] 26 | let worldThree = first_worldThree(&g[..]);//传入该字符串的整个字符串切片 [INFO] [stdout] | - immutable borrow occurs here [INFO] [stdout] 27 | //此时清空字符串方法将报错，因为该变量已经成为不可变的 [INFO] [stdout] 28 | g.clear(); [INFO] [stdout] | ^^^^^^^^^ mutable borrow occurs here [INFO] [stdout] 29 | println!("{}", worldThree); [INFO] [stdout] | ---------- immutable borrow later used here [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] error[E0502]: cannot borrow `h` as mutable because it is also borrowed as immutable [INFO] [stdout] --> src/main.rs:34:5 [INFO] [stdout] | [INFO] [stdout] 32 | let worldFour = first_worldThree(&h);//传入该字符串的整个字符串 [INFO] [stdout] | -- immutable borrow occurs here [INFO] [stdout] 33 | //此时清空字符串方法将报错，因为该变量已经成为不可变的 [INFO] [stdout] 34 | h.clear(); [INFO] [stdout] | ^^^^^^^^^ mutable borrow occurs here [INFO] [stdout] 35 | println!("{}", worldFour); [INFO] [stdout] | --------- immutable borrow later used here [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] error[E0502]: cannot borrow `h` as mutable because it is also borrowed as immutable [INFO] [stdout] --> src/main.rs:34:5 [INFO] [stdout] | [INFO] [stdout] 32 | let worldFour = first_worldThree(&h);//传入该字符串的整个字符串 [INFO] [stdout] | -- immutable borrow occurs here [INFO] [stdout] 33 | //此时清空字符串方法将报错，因为该变量已经成为不可变的 [INFO] [stdout] 34 | h.clear(); [INFO] [stdout] | ^^^^^^^^^ mutable borrow occurs here [INFO] [stdout] 35 | println!("{}", worldFour); [INFO] [stdout] | --------- immutable borrow later used here [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] For more information about this error, try `rustc --explain E0502`. [INFO] [stdout] [INFO] [stdout] For more information about this error, try `rustc --explain E0502`. [INFO] [stdout] [INFO] [stderr] error: could not compile `RustLearning-RustSlice` (bin "RustLearning-RustSlice" test) due to 3 previous errors; 5 warnings emitted [INFO] [stderr] warning: build failed, waiting for other jobs to finish... [INFO] [stderr] error: could not compile `RustLearning-RustSlice` (bin "RustLearning-RustSlice") due to 3 previous errors; 5 warnings emitted [INFO] running `Command { std: "docker" "inspect" "bc67a2b55bffd7db709b3c726c9889fcc7ed82700e61bdd84e48731cb6bdd8fd", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "bc67a2b55bffd7db709b3c726c9889fcc7ed82700e61bdd84e48731cb6bdd8fd", kill_on_drop: false }` [INFO] [stdout] bc67a2b55bffd7db709b3c726c9889fcc7ed82700e61bdd84e48731cb6bdd8fd