[INFO] fetching crate Boa 0.2.1...
[INFO] extracting crate Boa 0.2.1 into work/ex/beta-1.37-6/sources/1.36.0/reg/Boa/0.2.1
[INFO] extracting crate Boa 0.2.1 into work/ex/beta-1.37-6/sources/beta-2019-07-23/reg/Boa/0.2.1
[INFO] validating manifest of Boa-0.2.1 on toolchain 1.36.0
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+1.36.0" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] validating manifest of Boa-0.2.1 on toolchain beta-2019-07-23
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+beta-2019-07-23" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started frobbing Boa-0.2.1
[INFO] finished frobbing Boa-0.2.1
[INFO] frobbed toml for Boa-0.2.1 written to work/ex/beta-1.37-6/sources/1.36.0/reg/Boa/0.2.1/Cargo.toml
[INFO] started frobbing Boa-0.2.1
[INFO] finished frobbing Boa-0.2.1
[INFO] frobbed toml for Boa-0.2.1 written to work/ex/beta-1.37-6/sources/beta-2019-07-23/reg/Boa/0.2.1/Cargo.toml
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+1.36.0" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+beta-2019-07-23" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+1.36.0" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+beta-2019-07-23" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] testing Boa-0.2.1 against beta-2019-07-23 for beta-1.37-6
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.37-6/worker-6/beta-2019-07-23:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.37-6/sources/beta-2019-07-23/reg/Boa/0.2.1:/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=warn" "-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" "+beta-2019-07-23" "build" "--frozen"`
[INFO] [stdout] dde9072640307ff578dc3b3235d8e75a8c9a5f89b2fb97e4e5f36157e4f89168
[INFO] running `"docker" "start" "-a" "dde9072640307ff578dc3b3235d8e75a8c9a5f89b2fb97e4e5f36157e4f89168"`
[INFO] [stderr]    Compiling gc v0.3.3
[INFO] [stderr]    Compiling wasm-bindgen-backend v0.2.48
[INFO] [stderr]    Compiling synstructure v0.6.1
[INFO] [stderr]    Compiling gc_derive v0.3.2
[INFO] [stderr]    Compiling wasm-bindgen-macro-support v0.2.48
[INFO] [stderr]    Compiling wasm-bindgen-macro v0.2.48
[INFO] [stderr]    Compiling wasm-bindgen v0.2.48
[INFO] [stderr]    Compiling Boa v0.2.1 (/opt/crater/workdir)
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/lib/environment/lexical_environment.rs:23:38
[INFO] [stderr]    |
[INFO] [stderr] 23 | pub type Environment = Gc<GcCell<Box<EnvironmentRecordTrait>>>;
[INFO] [stderr]    |                                      ^^^^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn EnvironmentRecordTrait`
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(bare_trait_objects)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/lib/environment/lexical_environment.rs:64:32
[INFO] [stderr]    |
[INFO] [stderr] 64 |     fn cause(&self) -> Option<&error::Error> {
[INFO] [stderr]    |                                ^^^^^^^^^^^^ help: use `dyn`: `dyn error::Error`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/lib/syntax/ast/keyword.rs:99:32
[INFO] [stderr]    |
[INFO] [stderr] 99 |     fn cause(&self) -> Option<&error::Error> {
[INFO] [stderr]    |                                ^^^^^^^^^^^^ help: use `dyn`: `dyn error::Error`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/lib/syntax/lexer.rs:92:32
[INFO] [stderr]    |
[INFO] [stderr] 92 |     fn cause(&self) -> Option<&error::Error> {
[INFO] [stderr]    |                                ^^^^^^^^^^^^ help: use `dyn`: `dyn error::Error`
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 27.89s
[INFO] running `"docker" "inspect" "dde9072640307ff578dc3b3235d8e75a8c9a5f89b2fb97e4e5f36157e4f89168"`
[INFO] running `"docker" "rm" "-f" "dde9072640307ff578dc3b3235d8e75a8c9a5f89b2fb97e4e5f36157e4f89168"`
[INFO] [stdout] dde9072640307ff578dc3b3235d8e75a8c9a5f89b2fb97e4e5f36157e4f89168
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.37-6/worker-6/beta-2019-07-23:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.37-6/sources/beta-2019-07-23/reg/Boa/0.2.1:/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=warn" "-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" "+beta-2019-07-23" "test" "--frozen" "--no-run"`
[INFO] [stdout] bc5d91246f487230b9aefd0b5edc3220f6564d098a3019fd76e9148f04030ece
[INFO] running `"docker" "start" "-a" "bc5d91246f487230b9aefd0b5edc3220f6564d098a3019fd76e9148f04030ece"`
[INFO] [stderr]    Compiling Boa v0.2.1 (/opt/crater/workdir)
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/lib/environment/lexical_environment.rs:23:38
[INFO] [stderr]    |
[INFO] [stderr] 23 | pub type Environment = Gc<GcCell<Box<EnvironmentRecordTrait>>>;
[INFO] [stderr]    |                                      ^^^^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn EnvironmentRecordTrait`
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(bare_trait_objects)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/lib/environment/lexical_environment.rs:64:32
[INFO] [stderr]    |
[INFO] [stderr] 64 |     fn cause(&self) -> Option<&error::Error> {
[INFO] [stderr]    |                                ^^^^^^^^^^^^ help: use `dyn`: `dyn error::Error`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/lib/syntax/ast/keyword.rs:99:32
[INFO] [stderr]    |
[INFO] [stderr] 99 |     fn cause(&self) -> Option<&error::Error> {
[INFO] [stderr]    |                                ^^^^^^^^^^^^ help: use `dyn`: `dyn error::Error`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/lib/syntax/lexer.rs:92:32
[INFO] [stderr]    |
[INFO] [stderr] 92 |     fn cause(&self) -> Option<&error::Error> {
[INFO] [stderr]    |                                ^^^^^^^^^^^^ help: use `dyn`: `dyn error::Error`
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 5.28s
[INFO] running `"docker" "inspect" "bc5d91246f487230b9aefd0b5edc3220f6564d098a3019fd76e9148f04030ece"`
[INFO] running `"docker" "rm" "-f" "bc5d91246f487230b9aefd0b5edc3220f6564d098a3019fd76e9148f04030ece"`
[INFO] [stdout] bc5d91246f487230b9aefd0b5edc3220f6564d098a3019fd76e9148f04030ece
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.37-6/worker-6/beta-2019-07-23:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.37-6/sources/beta-2019-07-23/reg/Boa/0.2.1:/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=warn" "-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" "+beta-2019-07-23" "test" "--frozen"`
[INFO] [stdout] 93f86a93fa970c9caf14bc07df86311d0882cce8eb6ef9944111c91554e88ba9
[INFO] running `"docker" "start" "-a" "93f86a93fa970c9caf14bc07df86311d0882cce8eb6ef9944111c91554e88ba9"`
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.06s
[INFO] [stderr]      Running /opt/crater/target/debug/deps/boa-0051ec742f716453
[INFO] [stdout] 
[INFO] [stdout] running 16 tests
[INFO] [stdout] test js::value::tests::check_integer_is_true ... ok
[INFO] [stdout] test js::value::tests::check_get_set_field ... ok
[INFO] [stdout] test js::string::tests::check_string_constructor_is_function ... ok
[INFO] [stdout] test js::value::tests::check_number_is_true ... ok
[INFO] [stdout] test js::value::tests::check_is_object ... ok
[INFO] [stdout] test syntax::lexer::tests::check_positions ... ok
[INFO] [stdout] test syntax::lexer::tests::check_punctuators ... ok
[INFO] [stdout] test syntax::lexer::tests::check_keywords ... ok
[INFO] [stdout] test syntax::lexer::tests::check_decrement_advances_lexer_2_places ... ok
[INFO] [stdout] test js::value::tests::check_undefined ... ok
[INFO] [stdout] test syntax::lexer::tests::check_variable_definition_tokens ... ok
[INFO] [stdout] test js::value::tests::check_string_to_value ... ok
[INFO] [stdout] test syntax::lexer::tests::check_string ... ok
[INFO] [stdout] test syntax::lexer::tests::test_number_followed_by_dot ... ok
[INFO] [stdout] test syntax::lexer::tests::test_single_number_without_semicolon ... ok
[INFO] [stdout] test syntax::lexer::tests::numbers ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 16 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
[INFO] [stdout] 
[INFO] [stderr]      Running /opt/crater/target/debug/deps/bin-bb7537dd30460d54
[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 boa
[INFO] [stdout] 
[INFO] [stdout] running 1 test
[INFO] [stdout] test src/lib/syntax/lexer.rs - syntax::lexer::Lexer::new (line 120) ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 1 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
[INFO] [stdout] 
[INFO] running `"docker" "inspect" "93f86a93fa970c9caf14bc07df86311d0882cce8eb6ef9944111c91554e88ba9"`
[INFO] running `"docker" "rm" "-f" "93f86a93fa970c9caf14bc07df86311d0882cce8eb6ef9944111c91554e88ba9"`
[INFO] [stdout] 93f86a93fa970c9caf14bc07df86311d0882cce8eb6ef9944111c91554e88ba9