[INFO] updating cached repository tomasz-pankowski/rust-class-ps1
[INFO] running `"git" "fetch" "--all"`
[INFO] [stdout] Fetching origin
[INFO] [stderr] From git://github.com/tomasz-pankowski/rust-class-ps1
[INFO] [stderr]  * branch            HEAD       -> FETCH_HEAD
[INFO] running `"git" "clone" "work/cache/sources/gh/tomasz-pankowski/rust-class-ps1" "work/ex/pr-58948/sources/master#0f88167f89fffe321590c5148f21b7d51d44388d/gh/tomasz-pankowski/rust-class-ps1"`
[INFO] [stderr] Cloning into 'work/ex/pr-58948/sources/master#0f88167f89fffe321590c5148f21b7d51d44388d/gh/tomasz-pankowski/rust-class-ps1'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/tomasz-pankowski/rust-class-ps1" "work/ex/pr-58948/sources/try#a829e31f924ec11e400e8d0c2fd2c4bb8937ae6b/gh/tomasz-pankowski/rust-class-ps1"`
[INFO] [stderr] Cloning into 'work/ex/pr-58948/sources/try#a829e31f924ec11e400e8d0c2fd2c4bb8937ae6b/gh/tomasz-pankowski/rust-class-ps1'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] f97feee69ac50a6c831ca73fe4211eebb8e89f69
[INFO] sha for GitHub repo tomasz-pankowski/rust-class-ps1: f97feee69ac50a6c831ca73fe4211eebb8e89f69
[INFO] validating manifest of tomasz-pankowski/rust-class-ps1 on toolchain master#0f88167f89fffe321590c5148f21b7d51d44388d
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+0f88167f89fffe321590c5148f21b7d51d44388d-alt" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] validating manifest of tomasz-pankowski/rust-class-ps1 on toolchain try#a829e31f924ec11e400e8d0c2fd2c4bb8937ae6b
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+a829e31f924ec11e400e8d0c2fd2c4bb8937ae6b-alt" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started frobbing tomasz-pankowski/rust-class-ps1
[INFO] finished frobbing tomasz-pankowski/rust-class-ps1
[INFO] frobbed toml for tomasz-pankowski/rust-class-ps1 written to work/ex/pr-58948/sources/master#0f88167f89fffe321590c5148f21b7d51d44388d/gh/tomasz-pankowski/rust-class-ps1/Cargo.toml
[INFO] started frobbing tomasz-pankowski/rust-class-ps1
[INFO] finished frobbing tomasz-pankowski/rust-class-ps1
[INFO] frobbed toml for tomasz-pankowski/rust-class-ps1 written to work/ex/pr-58948/sources/try#a829e31f924ec11e400e8d0c2fd2c4bb8937ae6b/gh/tomasz-pankowski/rust-class-ps1/Cargo.toml
[INFO] crate tomasz-pankowski/rust-class-ps1 already has a lockfile, it will not be regenerated
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+0f88167f89fffe321590c5148f21b7d51d44388d-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+a829e31f924ec11e400e8d0c2fd2c4bb8937ae6b-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] checking tomasz-pankowski/rust-class-ps1 against try#a829e31f924ec11e400e8d0c2fd2c4bb8937ae6b for pr-58948
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-58948/worker-1/try#a829e31f924ec11e400e8d0c2fd2c4bb8937ae6b:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/pr-58948/sources/try#a829e31f924ec11e400e8d0c2fd2c4bb8937ae6b/gh/tomasz-pankowski/rust-class-ps1:/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" "+a829e31f924ec11e400e8d0c2fd2c4bb8937ae6b-alt" "check" "--frozen" "--all" "--all-targets"`
[INFO] [stdout] d368d020eb87ac6c24c6da90fcc2aa2f26ebdaa8eaa35f634ab887f7b73635c7
[INFO] running `"docker" "start" "-a" "d368d020eb87ac6c24c6da90fcc2aa2f26ebdaa8eaa35f634ab887f7b73635c7"`
[INFO] [stderr]     Checking ps1 v0.0.1 (/opt/crater/workdir)
[INFO] [stderr] warning: unused variable: `why`
[INFO] [stderr]   --> src/main.rs:57:32
[INFO] [stderr]    |
[INFO] [stderr] 57 |                                     Err(why) => panic!("couldn't open"),
[INFO] [stderr]    |                                         ^^^ help: consider prefixing with an underscore: `_why`
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(unused_variables)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `why`
[INFO] [stderr]   --> src/main.rs:62:13
[INFO] [stderr]    |
[INFO] [stderr] 62 |                                 Err(why) => panic!("couldn't read "),
[INFO] [stderr]    |                                     ^^^ help: consider prefixing with an underscore: `_why`
[INFO] [stderr] 
[INFO] [stderr] warning: variable `response_default` is assigned to, but never used
[INFO] [stderr]   --> src/main.rs:72:10
[INFO] [stderr]    |
[INFO] [stderr] 72 |                     let response_default;
[INFO] [stderr]    |                         ^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: consider using `_response_default` instead
[INFO] [stderr] 
[INFO] [stderr] warning: value assigned to `response_default` is never read
[INFO] [stderr]   --> src/main.rs:74:7
[INFO] [stderr]    |
[INFO] [stderr] 74 |                         response_default =format!(
[INFO] [stderr]    |                         ^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(unused_assignments)] on by default
[INFO] [stderr]    = help: maybe it is overwritten before being read?
[INFO] [stderr] 
[INFO] [stderr] warning: static variable `counter` should have an upper case name
[INFO] [stderr]   --> src/main.rs:29:16
[INFO] [stderr]    |
[INFO] [stderr] 29 |     static mut counter: i32 = 0;
[INFO] [stderr]    |                ^^^^^^^ help: convert the identifier to upper case: `COUNTER`
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(non_upper_case_globals)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `why`
[INFO] [stderr]   --> src/main.rs:57:32
[INFO] [stderr]    |
[INFO] [stderr] 57 |                                     Err(why) => panic!("couldn't open"),
[INFO] [stderr]    |                                         ^^^ help: consider prefixing with an underscore: `_why`
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(unused_variables)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `why`
[INFO] [stderr]   --> src/main.rs:62:13
[INFO] [stderr]    |
[INFO] [stderr] 62 |                                 Err(why) => panic!("couldn't read "),
[INFO] [stderr]    |                                     ^^^ help: consider prefixing with an underscore: `_why`
[INFO] [stderr] 
[INFO] [stderr] warning: variable `response_default` is assigned to, but never used
[INFO] [stderr]   --> src/main.rs:72:10
[INFO] [stderr]    |
[INFO] [stderr] 72 |                     let response_default;
[INFO] [stderr]    |                         ^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: consider using `_response_default` instead
[INFO] [stderr] 
[INFO] [stderr] warning: value assigned to `response_default` is never read
[INFO] [stderr]   --> src/main.rs:74:7
[INFO] [stderr]    |
[INFO] [stderr] 74 |                         response_default =format!(
[INFO] [stderr]    |                         ^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(unused_assignments)] on by default
[INFO] [stderr]    = help: maybe it is overwritten before being read?
[INFO] [stderr] 
[INFO] [stderr] warning: static variable `counter` should have an upper case name
[INFO] [stderr]   --> src/main.rs:29:16
[INFO] [stderr]    |
[INFO] [stderr] 29 |     static mut counter: i32 = 0;
[INFO] [stderr]    |                ^^^^^^^ help: convert the identifier to upper case: `COUNTER`
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(non_upper_case_globals)] on by default
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.42s
[INFO] running `"docker" "inspect" "d368d020eb87ac6c24c6da90fcc2aa2f26ebdaa8eaa35f634ab887f7b73635c7"`
[INFO] running `"docker" "rm" "-f" "d368d020eb87ac6c24c6da90fcc2aa2f26ebdaa8eaa35f634ab887f7b73635c7"`
[INFO] [stdout] d368d020eb87ac6c24c6da90fcc2aa2f26ebdaa8eaa35f634ab887f7b73635c7