[INFO] crate serde_tuple 0.2.5 is already in cache
[INFO] testing serde_tuple-0.2.5 against 1.38.0 for beta-1.39-1
[INFO] extracting crate serde_tuple 0.2.5 into work/builds/worker-6/source
[INFO] validating manifest of crates.io crate serde_tuple 0.2.5 on toolchain 1.38.0
[INFO] running `"/big/crater/work/cargo-home/bin/cargo" "+1.38.0" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started tweaking crates.io crate serde_tuple 0.2.5
[INFO] finished tweaking crates.io crate serde_tuple 0.2.5
[INFO] tweaked toml for crates.io crate serde_tuple 0.2.5 written to work/builds/worker-6/source/Cargo.toml
[INFO] running `"/big/crater/work/cargo-home/bin/cargo" "+1.38.0" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"`
[INFO] running `"/big/crater/work/cargo-home/bin/cargo" "+1.38.0" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"docker" "create" "-v" "/big/crater/work/builds/worker-6/target:/opt/rustwide/target:rw,Z" "-v" "/big/crater/work/builds/worker-6/source:/opt/rustwide/workdir:ro,Z" "-v" "/big/crater/work/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/big/crater/work/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "MAP_USER_ID=1000" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=warn" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--network" "none" "rustops/crates-build-env" "/opt/rustwide/cargo-home/bin/cargo" "+1.38.0" "build" "--frozen"`
[INFO] [stdout] 3a8f38339704b4878fad834998fc2f3906e6b39a1cfcfcaec3de50971f809eb5
[INFO] running `"docker" "start" "-a" "3a8f38339704b4878fad834998fc2f3906e6b39a1cfcfcaec3de50971f809eb5"`
[INFO] [stderr]    Compiling serde_tuple v0.2.5 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 3.48s
[INFO] running `"docker" "inspect" "3a8f38339704b4878fad834998fc2f3906e6b39a1cfcfcaec3de50971f809eb5"`
[INFO] running `"docker" "rm" "-f" "3a8f38339704b4878fad834998fc2f3906e6b39a1cfcfcaec3de50971f809eb5"`
[INFO] [stdout] 3a8f38339704b4878fad834998fc2f3906e6b39a1cfcfcaec3de50971f809eb5
[INFO] running `"docker" "create" "-v" "/big/crater/work/builds/worker-6/target:/opt/rustwide/target:rw,Z" "-v" "/big/crater/work/builds/worker-6/source:/opt/rustwide/workdir:ro,Z" "-v" "/big/crater/work/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/big/crater/work/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "MAP_USER_ID=1000" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=warn" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--network" "none" "rustops/crates-build-env" "/opt/rustwide/cargo-home/bin/cargo" "+1.38.0" "test" "--frozen" "--no-run"`
[INFO] [stdout] 9d13bdbb9d8dc7954cb46a5b7e41f3def988aeb74fba4301fa628c8646350ab9
[INFO] running `"docker" "start" "-a" "9d13bdbb9d8dc7954cb46a5b7e41f3def988aeb74fba4301fa628c8646350ab9"`
[INFO] [stderr]    Compiling serde_tuple v0.2.5 (/opt/rustwide/workdir)
[INFO] [stderr] warning: unused import: `std::borrow::Cow`
[INFO] [stderr]  --> examples/simple.rs:3:5
[INFO] [stderr]   |
[INFO] [stderr] 3 | use std::borrow::Cow;
[INFO] [stderr]   |     ^^^^^^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.81s
[INFO] running `"docker" "inspect" "9d13bdbb9d8dc7954cb46a5b7e41f3def988aeb74fba4301fa628c8646350ab9"`
[INFO] running `"docker" "rm" "-f" "9d13bdbb9d8dc7954cb46a5b7e41f3def988aeb74fba4301fa628c8646350ab9"`
[INFO] [stdout] 9d13bdbb9d8dc7954cb46a5b7e41f3def988aeb74fba4301fa628c8646350ab9
[INFO] running `"docker" "create" "-v" "/big/crater/work/builds/worker-6/target:/opt/rustwide/target:rw,Z" "-v" "/big/crater/work/builds/worker-6/source:/opt/rustwide/workdir:ro,Z" "-v" "/big/crater/work/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/big/crater/work/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "MAP_USER_ID=1000" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=warn" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--network" "none" "rustops/crates-build-env" "/opt/rustwide/cargo-home/bin/cargo" "+1.38.0" "test" "--frozen"`
[INFO] [stdout] ddbac5ad68424c8f122161c16e9542c22846eac72e156e77d5ca5dfd58752796
[INFO] running `"docker" "start" "-a" "ddbac5ad68424c8f122161c16e9542c22846eac72e156e77d5ca5dfd58752796"`
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.01s
[INFO] [stderr]      Running /opt/rustwide/target/debug/deps/serde_tuple-c560afea780c8df4
[INFO] [stdout] 
[INFO] [stdout] running 0 tests
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
[INFO] [stdout] 
[INFO] [stderr]    Doc-tests serde_tuple
[INFO] [stdout] 
[INFO] [stdout] running 1 test
[INFO] [stderr] 
[INFO] [stderr] thread 'rustc' has overflowed its stack
[INFO] [stderr] fatal runtime error: stack overflow
[INFO] [stderr] error: process didn't exit successfully: `rustdoc --edition=2018 --test /opt/rustwide/workdir/src/lib.rs --crate-name serde_tuple -L dependency=/opt/rustwide/target/debug/deps -L dependency=/opt/rustwide/target/debug/deps --extern proc_macro2=/opt/rustwide/target/debug/deps/libproc_macro2-b290e91d29b5a00e.rlib --extern quote=/opt/rustwide/target/debug/deps/libquote-102562647730aa5b.rlib --extern serde=/opt/rustwide/target/debug/deps/libserde-6d0ec8312a647899.rlib --extern serde_derive=/opt/rustwide/target/debug/deps/libserde_derive-45cc0e3876de4cbd.so --extern serde_json=/opt/rustwide/target/debug/deps/libserde_json-c2a01674aa9e97b1.rlib --extern serde_tuple=/opt/rustwide/target/debug/deps/libserde_tuple-679ec899b26b7d30.so --extern syn=/opt/rustwide/target/debug/deps/libsyn-e0caa76e46c18301.rlib` (signal: 6, SIGABRT: process abort signal)
[INFO] running `"docker" "inspect" "ddbac5ad68424c8f122161c16e9542c22846eac72e156e77d5ca5dfd58752796"`
[INFO] running `"docker" "rm" "-f" "ddbac5ad68424c8f122161c16e9542c22846eac72e156e77d5ca5dfd58752796"`
[INFO] [stdout] ddbac5ad68424c8f122161c16e9542c22846eac72e156e77d5ca5dfd58752796