[INFO] fetching crate seer 0.0.3...
[INFO] extracting crate seer 0.0.3 into work/ex/pr-62008/sources/master#848e0a23f34aaab3e4a974b031c86ef2a4e4fcc1/reg/seer/0.0.3
[INFO] extracting crate seer 0.0.3 into work/ex/pr-62008/sources/try#8f81d0bf6baf07b92f1246696722485c4ca0b049/reg/seer/0.0.3
[INFO] validating manifest of seer-0.0.3 on toolchain master#848e0a23f34aaab3e4a974b031c86ef2a4e4fcc1
[INFO] running `"/mnt/big/ec2-user/crater/work/local/cargo-home/bin/cargo" "+848e0a23f34aaab3e4a974b031c86ef2a4e4fcc1-alt" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] validating manifest of seer-0.0.3 on toolchain try#8f81d0bf6baf07b92f1246696722485c4ca0b049
[INFO] running `"/mnt/big/ec2-user/crater/work/local/cargo-home/bin/cargo" "+8f81d0bf6baf07b92f1246696722485c4ca0b049-alt" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started frobbing seer-0.0.3
[INFO] finished frobbing seer-0.0.3
[INFO] frobbed toml for seer-0.0.3 written to work/ex/pr-62008/sources/master#848e0a23f34aaab3e4a974b031c86ef2a4e4fcc1/reg/seer/0.0.3/Cargo.toml
[INFO] started frobbing seer-0.0.3
[INFO] finished frobbing seer-0.0.3
[INFO] frobbed toml for seer-0.0.3 written to work/ex/pr-62008/sources/try#8f81d0bf6baf07b92f1246696722485c4ca0b049/reg/seer/0.0.3/Cargo.toml
[INFO] running `"/mnt/big/ec2-user/crater/work/local/cargo-home/bin/cargo" "+848e0a23f34aaab3e4a974b031c86ef2a4e4fcc1-alt" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"`
[INFO] running `"/mnt/big/ec2-user/crater/work/local/cargo-home/bin/cargo" "+8f81d0bf6baf07b92f1246696722485c4ca0b049-alt" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"`
[INFO] running `"/mnt/big/ec2-user/crater/work/local/cargo-home/bin/cargo" "+848e0a23f34aaab3e4a974b031c86ef2a4e4fcc1-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"/mnt/big/ec2-user/crater/work/local/cargo-home/bin/cargo" "+8f81d0bf6baf07b92f1246696722485c4ca0b049-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] checking seer-0.0.3 against try#8f81d0bf6baf07b92f1246696722485c4ca0b049 for pr-62008
[INFO] running `"docker" "create" "-v" "/mnt/big/ec2-user/crater/work/local/target-dirs/pr-62008/worker-3/try#8f81d0bf6baf07b92f1246696722485c4ca0b049:/opt/crater/target:rw,Z" "-v" "/mnt/big/ec2-user/crater/work/ex/pr-62008/sources/try#8f81d0bf6baf07b92f1246696722485c4ca0b049/reg/seer/0.0.3:/opt/crater/workdir:ro,Z" "-v" "/mnt/big/ec2-user/crater/work/local/cargo-home:/opt/crater/cargo-home:ro,Z" "-v" "/mnt/big/ec2-user/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" "+8f81d0bf6baf07b92f1246696722485c4ca0b049-alt" "check" "--frozen" "--all" "--all-targets"`
[INFO] [stdout] 6366a59d610dbd98ad6ec1261f536c23d5231e93dfa836d9393f1a2e28bd9242
[INFO] running `"docker" "start" "-a" "6366a59d610dbd98ad6ec1261f536c23d5231e93dfa836d9393f1a2e28bd9242"`
[INFO] [stderr]    Compiling proc-macro2 v0.4.30
[INFO] [stderr]    Compiling unicode-xid v0.1.0
[INFO] [stderr]    Compiling autocfg v0.1.4
[INFO] [stderr]    Compiling cc v1.0.37
[INFO] [stderr]    Compiling syn v0.15.39
[INFO] [stderr]    Compiling unicode-xid v0.0.4
[INFO] [stderr]    Compiling ryu v1.0.0
[INFO] [stderr]    Compiling serde v1.0.94
[INFO] [stderr]    Compiling quote v0.3.15
[INFO] [stderr]    Compiling failure_derive v0.1.5
[INFO] [stderr]    Compiling memchr v2.2.1
[INFO] [stderr]     Checking rustc-demangle v0.1.15
[INFO] [stderr]     Checking itoa v0.3.4
[INFO] [stderr]     Checking serde v0.9.15
[INFO] [stderr]     Checking ucd-util v0.1.3
[INFO] [stderr]     Checking dtoa v0.4.4
[INFO] [stderr]    Compiling byteorder v1.3.2
[INFO] [stderr]    Compiling regex v1.1.9
[INFO] [stderr]     Checking itoa v0.4.4
[INFO] [stderr]     Checking unicode-width v0.1.5
[INFO] [stderr]     Checking utf8-ranges v1.0.3
[INFO] [stderr]    Compiling compiletest_rs v0.3.22
[INFO] [stderr]     Checking diff v0.1.11
[INFO] [stderr]    Compiling synom v0.11.3
[INFO] [stderr]     Checking regex-syntax v0.6.8
[INFO] [stderr]    Compiling num-traits v0.2.8
[INFO] [stderr]     Checking thread_local v0.3.6
[INFO] [stderr]     Checking log_settings v0.1.2
[INFO] [stderr]     Checking getopts v0.2.19
[INFO] [stderr]    Compiling syn v0.11.11
[INFO] [stderr]     Checking filetime v0.2.6
[INFO] [stderr]     Checking seer-z3 v0.1.2
[INFO] [stderr]     Checking aho-corasick v0.7.4
[INFO] [stderr]    Compiling backtrace-sys v0.1.30
[INFO] [stderr]    Compiling quote v0.6.13
[INFO] [stderr]     Checking num-traits v0.1.43
[INFO] [stderr]     Checking backtrace v0.3.32
[INFO] [stderr]    Compiling serde_codegen_internals v0.14.2
[INFO] [stderr]     Checking serde_json v0.9.10
[INFO] [stderr]    Compiling serde_derive v0.9.15
[INFO] [stderr]     Checking cargo_metadata v0.1.2
[INFO] [stderr]     Checking seer v0.0.3 (/opt/crater/workdir)
[INFO] [stderr]     Checking serde_json v1.0.40
[INFO] [stderr] error[E0463]: can't find crate for `rustc_const_math`
[INFO] [stderr]   --> src/lib.rs:14:1
[INFO] [stderr]    |
[INFO] [stderr] 14 | extern crate rustc_const_math;
[INFO] [stderr]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ can't find crate
[INFO] [stderr] 
[INFO] [stderr] error: aborting due to previous error
[INFO] [stderr] 
[INFO] [stderr] For more information about this error, try `rustc --explain E0463`.
[INFO] [stderr] error: Could not compile `seer`.
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stderr] error: build failed
[INFO] running `"docker" "inspect" "6366a59d610dbd98ad6ec1261f536c23d5231e93dfa836d9393f1a2e28bd9242"`
[INFO] running `"docker" "rm" "-f" "6366a59d610dbd98ad6ec1261f536c23d5231e93dfa836d9393f1a2e28bd9242"`
[INFO] [stdout] 6366a59d610dbd98ad6ec1261f536c23d5231e93dfa836d9393f1a2e28bd9242