[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 master#ff1737bb00913444173658b4e0b274fd79aabf66 for pr-132712-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FYanLong-111%2FRustLearning-RustSlice" "/workspace/builds/worker-7-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-7-tc1/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/YanLong-111/RustLearning-RustSlice on toolchain ff1737bb00913444173658b4e0b274fd79aabf66
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+ff1737bb00913444173658b4e0b274fd79aabf66" "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-7-tc1/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" "+ff1737bb00913444173658b4e0b274fd79aabf66" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-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@sha256:4a844ea9eb2546a2d2c7022eacef16ef2e8229c7fbb2c7d4d55a9ceca922f72d" "/opt/rustwide/cargo-home/bin/cargo" "+ff1737bb00913444173658b4e0b274fd79aabf66" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 0efd6d95fd4591dbc1bb3f933fff3e6d6c1cde743cee33c169007edf9044fc54
[INFO] running `Command { std: "docker" "start" "-a" "0efd6d95fd4591dbc1bb3f933fff3e6d6c1cde743cee33c169007edf9044fc54", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "0efd6d95fd4591dbc1bb3f933fff3e6d6c1cde743cee33c169007edf9044fc54", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "0efd6d95fd4591dbc1bb3f933fff3e6d6c1cde743cee33c169007edf9044fc54", kill_on_drop: false }`
[INFO] [stdout] 0efd6d95fd4591dbc1bb3f933fff3e6d6c1cde743cee33c169007edf9044fc54
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-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=allow" "-e" "RUSTDOCFLAGS=--cap-lints=allow" "-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" "+ff1737bb00913444173658b4e0b274fd79aabf66" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 58176b141300963d2926ffbefd8f8d8b3c35859eaf2c0902ddc50b3e635b5e89
[INFO] running `Command { std: "docker" "start" "-a" "58176b141300963d2926ffbefd8f8d8b3c35859eaf2c0902ddc50b3e635b5e89", kill_on_drop: false }`
[INFO] [stderr]     Checking RustLearning-RustSlice v0.1.0 (/opt/rustwide/workdir)
[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") due to 3 previous errors
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stderr] error: could not compile `RustLearning-RustSlice` (bin "RustLearning-RustSlice" test) due to 3 previous errors
[INFO] running `Command { std: "docker" "inspect" "58176b141300963d2926ffbefd8f8d8b3c35859eaf2c0902ddc50b3e635b5e89", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "58176b141300963d2926ffbefd8f8d8b3c35859eaf2c0902ddc50b3e635b5e89", kill_on_drop: false }`
[INFO] [stdout] 58176b141300963d2926ffbefd8f8d8b3c35859eaf2c0902ddc50b3e635b5e89