[INFO] updating cached repository uhyo/crypto-rc4-impl
[INFO] running `"git" "fetch" "--all"`
[INFO] [stdout] Fetching origin
[INFO] [stderr] From git://github.com/uhyo/crypto-rc4-impl
[INFO] [stderr]  * branch            HEAD       -> FETCH_HEAD
[INFO] running `"git" "clone" "work/cache/sources/gh/uhyo/crypto-rc4-impl" "work/ex/pr-62849/sources/master#435236b8877cdb98c82eaebfb7887782277265c5/gh/uhyo/crypto-rc4-impl"`
[INFO] [stderr] Cloning into 'work/ex/pr-62849/sources/master#435236b8877cdb98c82eaebfb7887782277265c5/gh/uhyo/crypto-rc4-impl'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/uhyo/crypto-rc4-impl" "work/ex/pr-62849/sources/try#b5c7f157c20453dde8d47371abe73b32351b4e7f/gh/uhyo/crypto-rc4-impl"`
[INFO] [stderr] Cloning into 'work/ex/pr-62849/sources/try#b5c7f157c20453dde8d47371abe73b32351b4e7f/gh/uhyo/crypto-rc4-impl'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] 0b83f75e5bae484445ca0dadadc0165203597ce7
[INFO] sha for GitHub repo uhyo/crypto-rc4-impl: 0b83f75e5bae484445ca0dadadc0165203597ce7
[INFO] validating manifest of uhyo/crypto-rc4-impl 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 uhyo/crypto-rc4-impl 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 uhyo/crypto-rc4-impl
[INFO] finished frobbing uhyo/crypto-rc4-impl
[INFO] frobbed toml for uhyo/crypto-rc4-impl written to work/ex/pr-62849/sources/master#435236b8877cdb98c82eaebfb7887782277265c5/gh/uhyo/crypto-rc4-impl/Cargo.toml
[INFO] started frobbing uhyo/crypto-rc4-impl
[INFO] finished frobbing uhyo/crypto-rc4-impl
[INFO] frobbed toml for uhyo/crypto-rc4-impl written to work/ex/pr-62849/sources/try#b5c7f157c20453dde8d47371abe73b32351b4e7f/gh/uhyo/crypto-rc4-impl/Cargo.toml
[INFO] crate uhyo/crypto-rc4-impl 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 uhyo/crypto-rc4-impl 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/uhyo/crypto-rc4-impl:/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] a927700b7e449cae0d324a3e3808fdfc719be32fe77e075ad11c96161614997f
[INFO] running `"docker" "start" "-a" "a927700b7e449cae0d324a3e3808fdfc719be32fe77e075ad11c96161614997f"`
[INFO] [stderr]     Checking libc v0.2.24
[INFO] [stderr]     Checking rand v0.3.15
[INFO] [stderr]     Checking rc4impl v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]  --> src/distribution.rs:5:22
[INFO] [stderr]   |
[INFO] [stderr] 5 | fn dist20(iter: &mut Iterator<Item=u8>, result: &mut [Box<[i32; 256]>]){
[INFO] [stderr]   |                      ^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn Iterator<Item=u8>`
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(bare_trait_objects)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/distribution.rs:29:31
[INFO] [stderr]    |
[INFO] [stderr] 29 | fn dist_at(n: u32, iter: &mut Iterator<Item=u8>, result: &mut [i32; 256]){
[INFO] [stderr]    |                               ^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn Iterator<Item=u8>`
[INFO] [stderr] 
[INFO] [stderr] error[E0425]: cannot find function `to_hex` in this scope
[INFO] [stderr]   --> src/lib.rs:29:19
[INFO] [stderr]    |
[INFO] [stderr] 29 |         let hex = to_hex(&message);
[INFO] [stderr]    |                   ^^^^^^ not found in this scope
[INFO] [stderr] help: possible candidate is found in another module, you can import it into scope
[INFO] [stderr]    |
[INFO] [stderr] 15 |     use hex::to_hex;
[INFO] [stderr]    |
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]  --> src/distribution.rs:5:22
[INFO] [stderr]   |
[INFO] [stderr] 5 | fn dist20(iter: &mut Iterator<Item=u8>, result: &mut [Box<[i32; 256]>]){
[INFO] [stderr]   |                      ^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn Iterator<Item=u8>`
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(bare_trait_objects)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/distribution.rs:29:31
[INFO] [stderr]    |
[INFO] [stderr] 29 | fn dist_at(n: u32, iter: &mut Iterator<Item=u8>, result: &mut [i32; 256]){
[INFO] [stderr]    |                               ^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn Iterator<Item=u8>`
[INFO] [stderr] 
[INFO] [stderr] error: aborting due to previous error
[INFO] [stderr] 
[INFO] [stderr] For more information about this error, try `rustc --explain E0425`.
[INFO] [stderr] error: Could not compile `rc4impl`.
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stderr] error: build failed
[INFO] running `"docker" "inspect" "a927700b7e449cae0d324a3e3808fdfc719be32fe77e075ad11c96161614997f"`
[INFO] running `"docker" "rm" "-f" "a927700b7e449cae0d324a3e3808fdfc719be32fe77e075ad11c96161614997f"`
[INFO] [stdout] a927700b7e449cae0d324a3e3808fdfc719be32fe77e075ad11c96161614997f