[INFO] updating cached repository NotLeet/rust-file-manipulation
[INFO] running `"git" "fetch" "--all"`
[INFO] [stdout] Fetching origin
[INFO] [stderr] From git://github.com/NotLeet/rust-file-manipulation
[INFO] [stderr]  * branch            HEAD       -> FETCH_HEAD
[INFO] running `"git" "clone" "work/cache/sources/gh/NotLeet/rust-file-manipulation" "work/ex/pr-63376/sources/master#60960a260f7b5c695fd0717311d72ce62dd4eb43/gh/NotLeet/rust-file-manipulation"`
[INFO] [stderr] Cloning into 'work/ex/pr-63376/sources/master#60960a260f7b5c695fd0717311d72ce62dd4eb43/gh/NotLeet/rust-file-manipulation'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/NotLeet/rust-file-manipulation" "work/ex/pr-63376/sources/try#266783e4e09e4e9d5307c1c8e695659c58bbcac7/gh/NotLeet/rust-file-manipulation"`
[INFO] [stderr] Cloning into 'work/ex/pr-63376/sources/try#266783e4e09e4e9d5307c1c8e695659c58bbcac7/gh/NotLeet/rust-file-manipulation'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] c75de95ac165463be89515ba8807d99d1159fe37
[INFO] sha for GitHub repo NotLeet/rust-file-manipulation: c75de95ac165463be89515ba8807d99d1159fe37
[INFO] validating manifest of NotLeet/rust-file-manipulation on toolchain master#60960a260f7b5c695fd0717311d72ce62dd4eb43
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+60960a260f7b5c695fd0717311d72ce62dd4eb43-alt" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] validating manifest of NotLeet/rust-file-manipulation on toolchain try#266783e4e09e4e9d5307c1c8e695659c58bbcac7
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+266783e4e09e4e9d5307c1c8e695659c58bbcac7-alt" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started frobbing NotLeet/rust-file-manipulation
[INFO] finished frobbing NotLeet/rust-file-manipulation
[INFO] frobbed toml for NotLeet/rust-file-manipulation written to work/ex/pr-63376/sources/master#60960a260f7b5c695fd0717311d72ce62dd4eb43/gh/NotLeet/rust-file-manipulation/Cargo.toml
[INFO] started frobbing NotLeet/rust-file-manipulation
[INFO] finished frobbing NotLeet/rust-file-manipulation
[INFO] frobbed toml for NotLeet/rust-file-manipulation written to work/ex/pr-63376/sources/try#266783e4e09e4e9d5307c1c8e695659c58bbcac7/gh/NotLeet/rust-file-manipulation/Cargo.toml
[INFO] crate NotLeet/rust-file-manipulation already has a lockfile, it will not be regenerated
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+60960a260f7b5c695fd0717311d72ce62dd4eb43-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+266783e4e09e4e9d5307c1c8e695659c58bbcac7-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] checking NotLeet/rust-file-manipulation against try#266783e4e09e4e9d5307c1c8e695659c58bbcac7 for pr-63376
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-63376/worker-5/try#266783e4e09e4e9d5307c1c8e695659c58bbcac7:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/pr-63376/sources/try#266783e4e09e4e9d5307c1c8e695659c58bbcac7/gh/NotLeet/rust-file-manipulation:/opt/crater/workdir:ro,Z" "-v" "/mnt/big/crater/work/local/cargo-home:/opt/crater/cargo-home:ro,Z" "-v" "/mnt/big/crater/work/local/rustup-home:/opt/crater/rustup-home:ro,Z" "-e" "USER_ID=1000" "-e" "SOURCE_DIR=/opt/crater/workdir" "-e" "MAP_USER_ID=1000" "-e" "CARGO_TARGET_DIR=/opt/crater/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-e" "CARGO_HOME=/opt/crater/cargo-home" "-e" "RUSTUP_HOME=/opt/crater/rustup-home" "-w" "/opt/crater/workdir" "-m" "1536M" "--network" "none" "rustops/crates-build-env" "/opt/crater/cargo-home/bin/cargo" "+266783e4e09e4e9d5307c1c8e695659c58bbcac7-alt" "check" "--frozen" "--all" "--all-targets"`
[INFO] [stdout] 357b9d9f0ada00cb9c8334561a28dfb01ebf36aef5dc6e6a919424b46151fe9c
[INFO] running `"docker" "start" "-a" "357b9d9f0ada00cb9c8334561a28dfb01ebf36aef5dc6e6a919424b46151fe9c"`
[INFO] [stderr]     Checking read_file v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] warning: unused variable: `expr`
[INFO] [stderr]   --> src/main.rs:20:12
[INFO] [stderr]    |
[INFO] [stderr] 20 |         Ok(expr) => {
[INFO] [stderr]    |            ^^^^ help: consider prefixing with an underscore: `_expr`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `err`
[INFO] [stderr]   --> src/main.rs:26:13
[INFO] [stderr]    |
[INFO] [stderr] 26 |         Err(err) => {
[INFO] [stderr]    |             ^^^ help: consider prefixing with an underscore: `_err`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `file_path`
[INFO] [stderr]   --> src/main.rs:81:20
[INFO] [stderr]    |
[INFO] [stderr] 81 | fn get_file_number(file_path: &PathBuf) -> i32 {
[INFO] [stderr]    |                    ^^^^^^^^^ help: consider prefixing with an underscore: `_file_path`
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `get_file_number`
[INFO] [stderr]   --> src/main.rs:81:1
[INFO] [stderr]    |
[INFO] [stderr] 81 | fn get_file_number(file_path: &PathBuf) -> i32 {
[INFO] [stderr]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `expr`
[INFO] [stderr]   --> src/main.rs:20:12
[INFO] [stderr]    |
[INFO] [stderr] 20 |         Ok(expr) => {
[INFO] [stderr]    |            ^^^^ help: consider prefixing with an underscore: `_expr`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `err`
[INFO] [stderr]   --> src/main.rs:26:13
[INFO] [stderr]    |
[INFO] [stderr] 26 |         Err(err) => {
[INFO] [stderr]    |             ^^^ help: consider prefixing with an underscore: `_err`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `file_path`
[INFO] [stderr]   --> src/main.rs:81:20
[INFO] [stderr]    |
[INFO] [stderr] 81 | fn get_file_number(file_path: &PathBuf) -> i32 {
[INFO] [stderr]    |                    ^^^^^^^^^ help: consider prefixing with an underscore: `_file_path`
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `get_file_number`
[INFO] [stderr]   --> src/main.rs:81:1
[INFO] [stderr]    |
[INFO] [stderr] 81 | fn get_file_number(file_path: &PathBuf) -> i32 {
[INFO] [stderr]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.89s
[INFO] running `"docker" "inspect" "357b9d9f0ada00cb9c8334561a28dfb01ebf36aef5dc6e6a919424b46151fe9c"`
[INFO] running `"docker" "rm" "-f" "357b9d9f0ada00cb9c8334561a28dfb01ebf36aef5dc6e6a919424b46151fe9c"`
[INFO] [stdout] 357b9d9f0ada00cb9c8334561a28dfb01ebf36aef5dc6e6a919424b46151fe9c