[INFO] updating cached repository jail-maker/check_ip
[INFO] running `"git" "fetch" "--all"`
[INFO] [stdout] Fetching origin
[INFO] [stderr] From git://github.com/jail-maker/check_ip
[INFO] [stderr]  * branch            HEAD       -> FETCH_HEAD
[INFO] running `"git" "clone" "work/cache/sources/gh/jail-maker/check_ip" "work/ex/pr-62849/sources/master#435236b8877cdb98c82eaebfb7887782277265c5/gh/jail-maker/check_ip"`
[INFO] [stderr] Cloning into 'work/ex/pr-62849/sources/master#435236b8877cdb98c82eaebfb7887782277265c5/gh/jail-maker/check_ip'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/jail-maker/check_ip" "work/ex/pr-62849/sources/try#b5c7f157c20453dde8d47371abe73b32351b4e7f/gh/jail-maker/check_ip"`
[INFO] [stderr] Cloning into 'work/ex/pr-62849/sources/try#b5c7f157c20453dde8d47371abe73b32351b4e7f/gh/jail-maker/check_ip'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] 93449c8958bd8e4bf5330d9b9a8c8e2ee24d17f1
[INFO] sha for GitHub repo jail-maker/check_ip: 93449c8958bd8e4bf5330d9b9a8c8e2ee24d17f1
[INFO] validating manifest of jail-maker/check_ip 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 jail-maker/check_ip 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 jail-maker/check_ip
[INFO] finished frobbing jail-maker/check_ip
[INFO] frobbed toml for jail-maker/check_ip written to work/ex/pr-62849/sources/master#435236b8877cdb98c82eaebfb7887782277265c5/gh/jail-maker/check_ip/Cargo.toml
[INFO] started frobbing jail-maker/check_ip
[INFO] finished frobbing jail-maker/check_ip
[INFO] frobbed toml for jail-maker/check_ip written to work/ex/pr-62849/sources/try#b5c7f157c20453dde8d47371abe73b32351b4e7f/gh/jail-maker/check_ip/Cargo.toml
[INFO] crate jail-maker/check_ip 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 jail-maker/check_ip against try#b5c7f157c20453dde8d47371abe73b32351b4e7f for pr-62849
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-62849/worker-4/try#b5c7f157c20453dde8d47371abe73b32351b4e7f:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/pr-62849/sources/try#b5c7f157c20453dde8d47371abe73b32351b4e7f/gh/jail-maker/check_ip:/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] 0b3cc683a2dc526e96f9422623d10da03b677f7e7286a0fa465006d26110a368
[INFO] running `"docker" "start" "-a" "0b3cc683a2dc526e96f9422623d10da03b677f7e7286a0fa465006d26110a368"`
[INFO] [stderr]     Checking ipnetwork v0.12.6
[INFO] [stderr]     Checking clap v2.25.0
[INFO] [stderr] error[E0636]: the feature `i128_type` has already been declared
[INFO] [stderr]  --> /opt/crater/cargo-home/registry/src/github.com-1ecc6299db9ec823/ipnetwork-0.12.6/src/lib.rs:7:47
[INFO] [stderr]   |
[INFO] [stderr] 7 | #![cfg_attr(feature = "ipv6-methods", feature(i128_type))]
[INFO] [stderr]   |                                               ^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] error: aborting due to previous error
[INFO] [stderr] 
[INFO] [stderr] For more information about this error, try `rustc --explain E0636`.
[INFO] [stderr] error: Could not compile `ipnetwork`.
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stderr] error: build failed
[INFO] running `"docker" "inspect" "0b3cc683a2dc526e96f9422623d10da03b677f7e7286a0fa465006d26110a368"`
[INFO] running `"docker" "rm" "-f" "0b3cc683a2dc526e96f9422623d10da03b677f7e7286a0fa465006d26110a368"`
[INFO] [stdout] 0b3cc683a2dc526e96f9422623d10da03b677f7e7286a0fa465006d26110a368