[INFO] updating cached repository viperscape/interstratis
[INFO] running `"git" "fetch" "--all"`
[INFO] [stdout] Fetching origin
[INFO] [stderr] From git://github.com/viperscape/interstratis
[INFO] [stderr]  * branch            HEAD       -> FETCH_HEAD
[INFO] running `"git" "clone" "work/cache/sources/gh/viperscape/interstratis" "work/ex/pr-62507/sources/master#78ca1bda3522b14bc0336bc01dd1d49fdba2cda7/gh/viperscape/interstratis"`
[INFO] [stderr] Cloning into 'work/ex/pr-62507/sources/master#78ca1bda3522b14bc0336bc01dd1d49fdba2cda7/gh/viperscape/interstratis'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/viperscape/interstratis" "work/ex/pr-62507/sources/try#18481b65f318e0b4b20c0fc61340054701719d6c/gh/viperscape/interstratis"`
[INFO] [stderr] Cloning into 'work/ex/pr-62507/sources/try#18481b65f318e0b4b20c0fc61340054701719d6c/gh/viperscape/interstratis'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] cb6d373e418a4089561eb1e57c1d2a212b8f7b3b
[INFO] sha for GitHub repo viperscape/interstratis: cb6d373e418a4089561eb1e57c1d2a212b8f7b3b
[INFO] validating manifest of viperscape/interstratis on toolchain master#78ca1bda3522b14bc0336bc01dd1d49fdba2cda7
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+78ca1bda3522b14bc0336bc01dd1d49fdba2cda7-alt" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] validating manifest of viperscape/interstratis on toolchain try#18481b65f318e0b4b20c0fc61340054701719d6c
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+18481b65f318e0b4b20c0fc61340054701719d6c-alt" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started frobbing viperscape/interstratis
[INFO] finished frobbing viperscape/interstratis
[INFO] frobbed toml for viperscape/interstratis written to work/ex/pr-62507/sources/master#78ca1bda3522b14bc0336bc01dd1d49fdba2cda7/gh/viperscape/interstratis/Cargo.toml
[INFO] started frobbing viperscape/interstratis
[INFO] finished frobbing viperscape/interstratis
[INFO] frobbed toml for viperscape/interstratis written to work/ex/pr-62507/sources/try#18481b65f318e0b4b20c0fc61340054701719d6c/gh/viperscape/interstratis/Cargo.toml
[INFO] crate viperscape/interstratis already has a lockfile, it will not be regenerated
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+78ca1bda3522b14bc0336bc01dd1d49fdba2cda7-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+18481b65f318e0b4b20c0fc61340054701719d6c-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] checking viperscape/interstratis against try#18481b65f318e0b4b20c0fc61340054701719d6c for pr-62507
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-62507/worker-0/try#18481b65f318e0b4b20c0fc61340054701719d6c:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/pr-62507/sources/try#18481b65f318e0b4b20c0fc61340054701719d6c/gh/viperscape/interstratis:/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" "+18481b65f318e0b4b20c0fc61340054701719d6c-alt" "check" "--frozen" "--all" "--all-targets"`
[INFO] [stdout] 51e01f47328eb3dfd5185e600ee2521a843890ab57e1db2426b71b00208d22e7
[INFO] running `"docker" "start" "-a" "51e01f47328eb3dfd5185e600ee2521a843890ab57e1db2426b71b00208d22e7"`
[INFO] [stderr]     Checking groupable v0.2.0
[INFO] [stderr]     Checking lichen v0.3.7
[INFO] [stderr]     Checking mime v0.2.6
[INFO] [stderr]     Checking base64 v0.5.2
[INFO] [stderr]     Checking mustache v0.8.1
[INFO] [stderr]     Checking cookie v0.9.1
[INFO] [stderr]     Checking hyper v0.10.12
[INFO] [stderr]     Checking nickel v0.10.0
[INFO] [stderr]     Checking interstratis v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] error: `RustcEncodable` is unstable
[INFO] [stderr]    --> src/main.rs:312:10
[INFO] [stderr]     |
[INFO] [stderr] 312 | #[derive(RustcEncodable)]
[INFO] [stderr]     |          ^^^^^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: #[deny(crater_run)] on by default
[INFO] [stderr] 
[INFO] [stderr] error: `RustcEncodable` is unstable
[INFO] [stderr]    --> src/main.rs:319:10
[INFO] [stderr]     |
[INFO] [stderr] 319 | #[derive(RustcEncodable)]
[INFO] [stderr]     |          ^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] error: `RustcEncodable` is unstable
[INFO] [stderr]    --> src/main.rs:312:10
[INFO] [stderr]     |
[INFO] [stderr] 312 | #[derive(RustcEncodable)]
[INFO] [stderr]     |          ^^^^^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: #[deny(crater_run)] on by default
[INFO] [stderr] 
[INFO] [stderr] error: `RustcEncodable` is unstable
[INFO] [stderr]    --> src/main.rs:319:10
[INFO] [stderr]     |
[INFO] [stderr] 319 | #[derive(RustcEncodable)]
[INFO] [stderr]     |          ^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] error: aborting due to 2 previous errors
[INFO] [stderr] 
[INFO] [stderr] error: Could not compile `interstratis`.
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stderr] error: aborting due to 2 previous errors
[INFO] [stderr] 
[INFO] [stderr] error: Could not compile `interstratis`.
[INFO] [stderr] 
[INFO] [stderr] To learn more, run the command again with --verbose.
[INFO] running `"docker" "inspect" "51e01f47328eb3dfd5185e600ee2521a843890ab57e1db2426b71b00208d22e7"`
[INFO] running `"docker" "rm" "-f" "51e01f47328eb3dfd5185e600ee2521a843890ab57e1db2426b71b00208d22e7"`
[INFO] [stdout] 51e01f47328eb3dfd5185e600ee2521a843890ab57e1db2426b71b00208d22e7