[INFO] updating cached repository cadaverine/k-combinations
[INFO] running `"git" "fetch" "--all"`
[INFO] [stdout] Fetching origin
[INFO] [stderr] From git://github.com/cadaverine/k-combinations
[INFO] [stderr]  * branch            HEAD       -> FETCH_HEAD
[INFO] running `"git" "clone" "work/cache/sources/gh/cadaverine/k-combinations" "work/ex/pr-62849/sources/master#435236b8877cdb98c82eaebfb7887782277265c5/gh/cadaverine/k-combinations"`
[INFO] [stderr] Cloning into 'work/ex/pr-62849/sources/master#435236b8877cdb98c82eaebfb7887782277265c5/gh/cadaverine/k-combinations'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/cadaverine/k-combinations" "work/ex/pr-62849/sources/try#b5c7f157c20453dde8d47371abe73b32351b4e7f/gh/cadaverine/k-combinations"`
[INFO] [stderr] Cloning into 'work/ex/pr-62849/sources/try#b5c7f157c20453dde8d47371abe73b32351b4e7f/gh/cadaverine/k-combinations'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] 7e1a3e1ca43560cf72da504cf7b334474cefb87e
[INFO] sha for GitHub repo cadaverine/k-combinations: 7e1a3e1ca43560cf72da504cf7b334474cefb87e
[INFO] validating manifest of cadaverine/k-combinations on toolchain master#435236b8877cdb98c82eaebfb7887782277265c5
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+435236b8877cdb98c82eaebfb7887782277265c5-alt" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] validating manifest of cadaverine/k-combinations on toolchain try#b5c7f157c20453dde8d47371abe73b32351b4e7f
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+b5c7f157c20453dde8d47371abe73b32351b4e7f-alt" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started frobbing cadaverine/k-combinations
[INFO] finished frobbing cadaverine/k-combinations
[INFO] frobbed toml for cadaverine/k-combinations written to work/ex/pr-62849/sources/master#435236b8877cdb98c82eaebfb7887782277265c5/gh/cadaverine/k-combinations/Cargo.toml
[INFO] started frobbing cadaverine/k-combinations
[INFO] finished frobbing cadaverine/k-combinations
[INFO] frobbed toml for cadaverine/k-combinations written to work/ex/pr-62849/sources/try#b5c7f157c20453dde8d47371abe73b32351b4e7f/gh/cadaverine/k-combinations/Cargo.toml
[INFO] crate cadaverine/k-combinations already has a lockfile, it will not be regenerated
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+435236b8877cdb98c82eaebfb7887782277265c5-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+b5c7f157c20453dde8d47371abe73b32351b4e7f-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] checking cadaverine/k-combinations against try#b5c7f157c20453dde8d47371abe73b32351b4e7f for pr-62849
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-62849/worker-0/try#b5c7f157c20453dde8d47371abe73b32351b4e7f:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/pr-62849/sources/try#b5c7f157c20453dde8d47371abe73b32351b4e7f/gh/cadaverine/k-combinations:/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" "+b5c7f157c20453dde8d47371abe73b32351b4e7f-alt" "check" "--frozen" "--all" "--all-targets"`
[INFO] [stdout] b25ca4c4550a6a9df83a38747e402efec64f3d5542d29a82125b508eac136f5d
[INFO] running `"docker" "start" "-a" "b25ca4c4550a6a9df83a38747e402efec64f3d5542d29a82125b508eac136f5d"`
[INFO] [stderr]     Checking k-combinations v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] error[E0425]: cannot find value `arr` in this scope
[INFO] [stderr]  --> src/main.rs:8:30
[INFO] [stderr]   |
[INFO] [stderr] 8 |     let mut numeratorArray = arr[1..k];
[INFO] [stderr]   |                              ^^^ help: a tuple variant with a similar name exists: `Err`
[INFO] [stderr] 
[INFO] [stderr] error[E0308]: mismatched types
[INFO] [stderr]  --> src/main.rs:1:49
[INFO] [stderr]   |
[INFO] [stderr] 1 | fn get_k_combinations_number(n: u64, k: u64) -> u64 {
[INFO] [stderr]   |    -------------------------                    ^^^ expected u64, found ()
[INFO] [stderr]   |    |
[INFO] [stderr]   |    this function's body doesn't return
[INFO] [stderr]   |
[INFO] [stderr]   = note: expected type `u64`
[INFO] [stderr]              found type `()`
[INFO] [stderr] 
[INFO] [stderr] error[E0308]: mismatched types
[INFO] [stderr]   --> src/main.rs:13:47
[INFO] [stderr]    |
[INFO] [stderr] 13 | fn k_combinations_generate(n: u64, k: u64) -> u64 {
[INFO] [stderr]    |    -----------------------                    ^^^ expected u64, found ()
[INFO] [stderr]    |    |
[INFO] [stderr]    |    this function's body doesn't return
[INFO] [stderr]    |
[INFO] [stderr]    = note: expected type `u64`
[INFO] [stderr]               found type `()`
[INFO] [stderr] 
[INFO] [stderr] error[E0425]: cannot find value `arr` in this scope
[INFO] [stderr]  --> src/main.rs:8:30
[INFO] [stderr]   |
[INFO] [stderr] 8 |     let mut numeratorArray = arr[1..k];
[INFO] [stderr]   |                              ^^^ help: a tuple variant with a similar name exists: `Err`
[INFO] [stderr] error[E0277]: `std::ops::Range<{integer}>` doesn't implement `std::fmt::Display`
[INFO] [stderr]   --> src/main.rs:19:18
[INFO] [stderr]    |
[INFO] [stderr] 19 |     print!("{}", (1..20));
[INFO] [stderr]    |                  ^^^^^^^ `std::ops::Range<{integer}>` cannot be formatted with the default formatter
[INFO] [stderr]    |
[INFO] [stderr]    = help: the trait `std::fmt::Display` is not implemented for `std::ops::Range<{integer}>`
[INFO] [stderr]    = note: in format strings you may be able to use `{:?}` (or {:#?} for pretty-print) instead
[INFO] [stderr]    = note: required by `std::fmt::Display::fmt`
[INFO] [stderr] 
[INFO] [stderr] error: aborting due to 4 previous errors
[INFO] [stderr] 
[INFO] [stderr] Some errors have detailed explanations: E0277, E0308, E0425.
[INFO] [stderr] For more information about an error, try `rustc --explain E0277`.
[INFO] [stderr] error: Could not compile `k-combinations`.
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stderr] 
[INFO] [stderr] error[E0308]: mismatched types
[INFO] [stderr]  --> src/main.rs:1:49
[INFO] [stderr]   |
[INFO] [stderr] 1 | fn get_k_combinations_number(n: u64, k: u64) -> u64 {
[INFO] [stderr]   |    -------------------------                    ^^^ expected u64, found ()
[INFO] [stderr]   |    |
[INFO] [stderr]   |    this function's body doesn't return
[INFO] [stderr]   |
[INFO] [stderr]   = note: expected type `u64`
[INFO] [stderr]              found type `()`
[INFO] [stderr] 
[INFO] [stderr] error[E0308]: mismatched types
[INFO] [stderr]   --> src/main.rs:13:47
[INFO] [stderr]    |
[INFO] [stderr] 13 | fn k_combinations_generate(n: u64, k: u64) -> u64 {
[INFO] [stderr]    |    -----------------------                    ^^^ expected u64, found ()
[INFO] [stderr]    |    |
[INFO] [stderr]    |    this function's body doesn't return
[INFO] [stderr]    |
[INFO] [stderr]    = note: expected type `u64`
[INFO] [stderr]               found type `()`
[INFO] [stderr] 
[INFO] [stderr] error[E0277]: `std::ops::Range<{integer}>` doesn't implement `std::fmt::Display`
[INFO] [stderr]   --> src/main.rs:19:18
[INFO] [stderr]    |
[INFO] [stderr] 19 |     print!("{}", (1..20));
[INFO] [stderr]    |                  ^^^^^^^ `std::ops::Range<{integer}>` cannot be formatted with the default formatter
[INFO] [stderr]    |
[INFO] [stderr]    = help: the trait `std::fmt::Display` is not implemented for `std::ops::Range<{integer}>`
[INFO] [stderr]    = note: in format strings you may be able to use `{:?}` (or {:#?} for pretty-print) instead
[INFO] [stderr]    = note: required by `std::fmt::Display::fmt`
[INFO] [stderr] 
[INFO] [stderr] error: aborting due to 4 previous errors
[INFO] [stderr] 
[INFO] [stderr] Some errors have detailed explanations: E0277, E0308, E0425.
[INFO] [stderr] For more information about an error, try `rustc --explain E0277`.
[INFO] [stderr] error: Could not compile `k-combinations`.
[INFO] [stderr] 
[INFO] [stderr] To learn more, run the command again with --verbose.
[INFO] running `"docker" "inspect" "b25ca4c4550a6a9df83a38747e402efec64f3d5542d29a82125b508eac136f5d"`
[INFO] running `"docker" "rm" "-f" "b25ca4c4550a6a9df83a38747e402efec64f3d5542d29a82125b508eac136f5d"`
[INFO] [stdout] b25ca4c4550a6a9df83a38747e402efec64f3d5542d29a82125b508eac136f5d