[INFO] cloning repository https://github.com/razorbacky/slice_type_2-1
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/razorbacky/slice_type_2-1" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Frazorbacky%2Fslice_type_2-1", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Frazorbacky%2Fslice_type_2-1'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 159d54b387eabf3d395da9dfa5914b8a8ea4c75d
[INFO] checking razorbacky/slice_type_2-1 against try#47eaa3b85fbe5fa2b3b731b5fecdc5954cbfc268 for pr-149058
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Frazorbacky%2Fslice_type_2-1" "/workspace/builds/worker-2-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-2-tc2/source'...
[INFO] [stderr] done.
[INFO] started tweaking git repo https://github.com/razorbacky/slice_type_2-1
[INFO] finished tweaking git repo https://github.com/razorbacky/slice_type_2-1
[INFO] tweaked toml for git repo https://github.com/razorbacky/slice_type_2-1 written to /workspace/builds/worker-2-tc2/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/razorbacky/slice_type_2-1 on toolchain 47eaa3b85fbe5fa2b3b731b5fecdc5954cbfc268
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+47eaa3b85fbe5fa2b3b731b5fecdc5954cbfc268" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/razorbacky/slice_type_2-1 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" "+47eaa3b85fbe5fa2b3b731b5fecdc5954cbfc268" "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-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@sha256:94a0c148923f5b2b52a63ef0eeb1882ad339ab61bce784c8077cbe41c61feb6c" "/opt/rustwide/cargo-home/bin/cargo" "+47eaa3b85fbe5fa2b3b731b5fecdc5954cbfc268" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 14251e1a9d2f1f503de88ed0e45773a180f797ee3fec61c1d5f57550a781bfde
[INFO] running `Command { std: "docker" "start" "-a" "14251e1a9d2f1f503de88ed0e45773a180f797ee3fec61c1d5f57550a781bfde", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "14251e1a9d2f1f503de88ed0e45773a180f797ee3fec61c1d5f57550a781bfde", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "14251e1a9d2f1f503de88ed0e45773a180f797ee3fec61c1d5f57550a781bfde", kill_on_drop: false }`
[INFO] [stdout] 14251e1a9d2f1f503de88ed0e45773a180f797ee3fec61c1d5f57550a781bfde
[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@sha256:94a0c148923f5b2b52a63ef0eeb1882ad339ab61bce784c8077cbe41c61feb6c" "/opt/rustwide/cargo-home/bin/cargo" "+47eaa3b85fbe5fa2b3b731b5fecdc5954cbfc268" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] cc15a515bd702e7ed52819edc1a88158384dff0a586fc5b5b5eb2fb37ef7bdf5
[INFO] running `Command { std: "docker" "start" "-a" "cc15a515bd702e7ed52819edc1a88158384dff0a586fc5b5b5eb2fb37ef7bdf5", kill_on_drop: false }`
[INFO] [stderr]     Checking slice_type_2-1 v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] error[E0502]: cannot borrow `s` as mutable because it is also borrowed as immutable
[INFO] [stdout]   --> src/main.rs:36:5
[INFO] [stdout]    |
[INFO] [stdout] 34 |     let word = first_word(&s);
[INFO] [stdout]    |                           -- immutable borrow occurs here
[INFO] [stdout] 35 |
[INFO] [stdout] 36 |     s.clear(); // 오류
[INFO] [stdout]    |     ^^^^^^^^^ mutable borrow occurs here
[INFO] [stdout] 37 |
[INFO] [stdout] 38 |     println!("the first word is : {}", word);
[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] [stderr] error: could not compile `slice_type_2-1` (bin "slice_type_2-1" test) due to 1 previous error
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stdout] error[E0502]: cannot borrow `s` as mutable because it is also borrowed as immutable
[INFO] [stdout]   --> src/main.rs:36:5
[INFO] [stdout]    |
[INFO] [stdout] 34 |     let word = first_word(&s);
[INFO] [stdout]    |                           -- immutable borrow occurs here
[INFO] [stdout] 35 |
[INFO] [stdout] 36 |     s.clear(); // 오류
[INFO] [stdout]    |     ^^^^^^^^^ mutable borrow occurs here
[INFO] [stdout] 37 |
[INFO] [stdout] 38 |     println!("the first word is : {}", word);
[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] [stderr] error: could not compile `slice_type_2-1` (bin "slice_type_2-1") due to 1 previous error
[INFO] running `Command { std: "docker" "inspect" "cc15a515bd702e7ed52819edc1a88158384dff0a586fc5b5b5eb2fb37ef7bdf5", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "cc15a515bd702e7ed52819edc1a88158384dff0a586fc5b5b5eb2fb37ef7bdf5", kill_on_drop: false }`
[INFO] [stdout] cc15a515bd702e7ed52819edc1a88158384dff0a586fc5b5b5eb2fb37ef7bdf5