[INFO] fetching crate serde_tuple 0.2.2...
[INFO] extracting crate serde_tuple 0.2.2 into work/ex/pr-61629/sources/master#c8865d8e195813ade6b84434ac9f8850e7112d1a/reg/serde_tuple/0.2.2
[INFO] extracting crate serde_tuple 0.2.2 into work/ex/pr-61629/sources/try#e212b7d492c96d3837691ba29d32d5f468933fb8/reg/serde_tuple/0.2.2
[INFO] validating manifest of serde_tuple-0.2.2 on toolchain master#c8865d8e195813ade6b84434ac9f8850e7112d1a
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+c8865d8e195813ade6b84434ac9f8850e7112d1a-alt" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] validating manifest of serde_tuple-0.2.2 on toolchain try#e212b7d492c96d3837691ba29d32d5f468933fb8
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+e212b7d492c96d3837691ba29d32d5f468933fb8-alt" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started frobbing serde_tuple-0.2.2
[INFO] finished frobbing serde_tuple-0.2.2
[INFO] frobbed toml for serde_tuple-0.2.2 written to work/ex/pr-61629/sources/master#c8865d8e195813ade6b84434ac9f8850e7112d1a/reg/serde_tuple/0.2.2/Cargo.toml
[INFO] started frobbing serde_tuple-0.2.2
[INFO] finished frobbing serde_tuple-0.2.2
[INFO] frobbed toml for serde_tuple-0.2.2 written to work/ex/pr-61629/sources/try#e212b7d492c96d3837691ba29d32d5f468933fb8/reg/serde_tuple/0.2.2/Cargo.toml
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+c8865d8e195813ade6b84434ac9f8850e7112d1a-alt" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+e212b7d492c96d3837691ba29d32d5f468933fb8-alt" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+c8865d8e195813ade6b84434ac9f8850e7112d1a-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+e212b7d492c96d3837691ba29d32d5f468933fb8-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] testing serde_tuple-0.2.2 against try#e212b7d492c96d3837691ba29d32d5f468933fb8 for pr-61629
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-61629/worker-5/try#e212b7d492c96d3837691ba29d32d5f468933fb8:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/pr-61629/sources/try#e212b7d492c96d3837691ba29d32d5f468933fb8/reg/serde_tuple/0.2.2:/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" "+e212b7d492c96d3837691ba29d32d5f468933fb8-alt" "build" "--frozen"`
[INFO] [stdout] a4348a536336a4413a768dd264434a80103a20ab53a87eefc87c79abc62e0e03
[INFO] running `"docker" "start" "-a" "a4348a536336a4413a768dd264434a80103a20ab53a87eefc87c79abc62e0e03"`
[INFO] [stderr]     Blocking waiting for file lock on package cache lock
[INFO] [stderr]    Compiling serde_tuple v0.2.2 (/opt/crater/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 3.59s
[INFO] running `"docker" "inspect" "a4348a536336a4413a768dd264434a80103a20ab53a87eefc87c79abc62e0e03"`
[INFO] running `"docker" "rm" "-f" "a4348a536336a4413a768dd264434a80103a20ab53a87eefc87c79abc62e0e03"`
[INFO] [stdout] a4348a536336a4413a768dd264434a80103a20ab53a87eefc87c79abc62e0e03
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-61629/worker-5/try#e212b7d492c96d3837691ba29d32d5f468933fb8:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/pr-61629/sources/try#e212b7d492c96d3837691ba29d32d5f468933fb8/reg/serde_tuple/0.2.2:/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" "+e212b7d492c96d3837691ba29d32d5f468933fb8-alt" "test" "--frozen" "--no-run"`
[INFO] [stdout] 1d568738b43210c366856698e598f827fd18d2dd324437c5e793d43de0d9c49b
[INFO] running `"docker" "start" "-a" "1d568738b43210c366856698e598f827fd18d2dd324437c5e793d43de0d9c49b"`
[INFO] [stderr]    Compiling serde_tuple v0.2.2 (/opt/crater/workdir)
[INFO] [stderr] warning: suffixes on a tuple index are invalid
[INFO] [stderr]  --> examples/simple.rs:5:34
[INFO] [stderr]   |
[INFO] [stderr] 5 | #[derive(Debug, Serialize_tuple, Deserialize_tuple)]
[INFO] [stderr]   |                                  ^^^^^^^^^^^^^^^^^ invalid suffix `usize`
[INFO] [stderr]   |
[INFO] [stderr]   = note: `usize` is *temporarily* accepted on tuple index fields as it was incorrectly accepted on stable for a few releases
[INFO] [stderr]   = help: on proc macros, you'll want to use `syn::Index::from` or `proc_macro::Literal::*_unsuffixed` for code that will desugar to tuple field access
[INFO] [stderr]   = note: for more context, see https://github.com/rust-lang/rust/issues/60210
[INFO] [stderr] 
[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 1.07s
[INFO] running `"docker" "inspect" "1d568738b43210c366856698e598f827fd18d2dd324437c5e793d43de0d9c49b"`
[INFO] running `"docker" "rm" "-f" "1d568738b43210c366856698e598f827fd18d2dd324437c5e793d43de0d9c49b"`
[INFO] [stdout] 1d568738b43210c366856698e598f827fd18d2dd324437c5e793d43de0d9c49b
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-61629/worker-5/try#e212b7d492c96d3837691ba29d32d5f468933fb8:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/pr-61629/sources/try#e212b7d492c96d3837691ba29d32d5f468933fb8/reg/serde_tuple/0.2.2:/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" "+e212b7d492c96d3837691ba29d32d5f468933fb8-alt" "test" "--frozen"`
[INFO] [stdout] 86d99ea1c8d456399db25e1586bc05ff856fec392a1b9fb802666730ce437521
[INFO] running `"docker" "start" "-a" "86d99ea1c8d456399db25e1586bc05ff856fec392a1b9fb802666730ce437521"`
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.02s
[INFO] [stdout] running 0 tests
[INFO] [stderr]      Running /opt/crater/target/debug/deps/serde_tuple-85d635d8cda49dc8
[INFO] [stdout] 
[INFO] [stderr]    Doc-tests serde_tuple
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
[INFO] [stdout] 
[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/crater/workdir/src/lib.rs --crate-name serde_tuple -L dependency=/opt/crater/target/debug/deps -L dependency=/opt/crater/target/debug/deps --extern proc_macro2=/opt/crater/target/debug/deps/libproc_macro2-6741379cf63e5fbe.rlib --extern quote=/opt/crater/target/debug/deps/libquote-15764703005acbed.rlib --extern serde=/opt/crater/target/debug/deps/libserde-933ea99b102e6ff6.rlib --extern serde_derive=/opt/crater/target/debug/deps/libserde_derive-0319dd91aea71d0a.so --extern serde_json=/opt/crater/target/debug/deps/libserde_json-73c3913c70bebd83.rlib --extern serde_tuple=/opt/crater/target/debug/deps/libserde_tuple-cc352dc0150ee83d.so --extern syn=/opt/crater/target/debug/deps/libsyn-44a4a725e637b0f1.rlib` (signal: 6, SIGABRT: process abort signal)
[INFO] running `"docker" "inspect" "86d99ea1c8d456399db25e1586bc05ff856fec392a1b9fb802666730ce437521"`
[INFO] running `"docker" "rm" "-f" "86d99ea1c8d456399db25e1586bc05ff856fec392a1b9fb802666730ce437521"`
[INFO] [stdout] 86d99ea1c8d456399db25e1586bc05ff856fec392a1b9fb802666730ce437521