[INFO] crate wfst 0.6.0 is already in cache
[INFO] extracting crate wfst 0.6.0 into work/ex/pr-62507/sources/master#78ca1bda3522b14bc0336bc01dd1d49fdba2cda7/reg/wfst/0.6.0
[INFO] extracting crate wfst 0.6.0 into work/ex/pr-62507/sources/try#18481b65f318e0b4b20c0fc61340054701719d6c/reg/wfst/0.6.0
[INFO] validating manifest of wfst-0.6.0 on toolchain master#78ca1bda3522b14bc0336bc01dd1d49fdba2cda7
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+78ca1bda3522b14bc0336bc01dd1d49fdba2cda7-alt" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] validating manifest of wfst-0.6.0 on toolchain try#18481b65f318e0b4b20c0fc61340054701719d6c
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+18481b65f318e0b4b20c0fc61340054701719d6c-alt" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started frobbing wfst-0.6.0
[INFO] finished frobbing wfst-0.6.0
[INFO] frobbed toml for wfst-0.6.0 written to work/ex/pr-62507/sources/master#78ca1bda3522b14bc0336bc01dd1d49fdba2cda7/reg/wfst/0.6.0/Cargo.toml
[INFO] started frobbing wfst-0.6.0
[INFO] finished frobbing wfst-0.6.0
[INFO] frobbed toml for wfst-0.6.0 written to work/ex/pr-62507/sources/try#18481b65f318e0b4b20c0fc61340054701719d6c/reg/wfst/0.6.0/Cargo.toml
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+78ca1bda3522b14bc0336bc01dd1d49fdba2cda7-alt" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+18481b65f318e0b4b20c0fc61340054701719d6c-alt" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+78ca1bda3522b14bc0336bc01dd1d49fdba2cda7-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+18481b65f318e0b4b20c0fc61340054701719d6c-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] checking wfst-0.6.0 against try#18481b65f318e0b4b20c0fc61340054701719d6c for pr-62507
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-62507/worker-7/try#18481b65f318e0b4b20c0fc61340054701719d6c:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/pr-62507/sources/try#18481b65f318e0b4b20c0fc61340054701719d6c/reg/wfst/0.6.0:/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" "+18481b65f318e0b4b20c0fc61340054701719d6c-alt" "check" "--frozen" "--all" "--all-targets"`
[INFO] [stdout] 24c0e3dcbcadfd669012c438fa0a6aec23b25debca0a6146e8160c451768705b
[INFO] running `"docker" "start" "-a" "24c0e3dcbcadfd669012c438fa0a6aec23b25debca0a6146e8160c451768705b"`
[INFO] [stderr]     Checking bincode v0.6.1
[INFO] [stderr]     Checking wfst v0.6.0 (/opt/crater/workdir)
[INFO] [stderr] error: `RustcDecodable` is unstable
[INFO] [stderr]   --> src/semiring/floatweight.rs:39:46
[INFO] [stderr]    |
[INFO] [stderr] 39 | #[derive(Clone, Debug, Hash, RustcEncodable, RustcDecodable)]
[INFO] [stderr]    |                                              ^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[deny(crater_run)] on by default
[INFO] [stderr] 
[INFO] [stderr] error: `RustcEncodable` is unstable
[INFO] [stderr]   --> src/semiring/floatweight.rs:39:30
[INFO] [stderr]    |
[INFO] [stderr] 39 | #[derive(Clone, Debug, Hash, RustcEncodable, RustcDecodable)]
[INFO] [stderr]    |                              ^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] error: `RustcDecodable` is unstable
[INFO] [stderr]    --> src/semiring/floatweight.rs:164:46
[INFO] [stderr]     |
[INFO] [stderr] 164 | #[derive(Clone, Debug, Hash, RustcEncodable, RustcDecodable)]
[INFO] [stderr]     |                                              ^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] error: `RustcEncodable` is unstable
[INFO] [stderr]    --> src/semiring/floatweight.rs:164:30
[INFO] [stderr]     |
[INFO] [stderr] 164 | #[derive(Clone, Debug, Hash, RustcEncodable, RustcDecodable)]
[INFO] [stderr]     |                              ^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] error: `RustcDecodable` is unstable
[INFO] [stderr]    --> src/semiring/floatweight.rs:295:46
[INFO] [stderr]     |
[INFO] [stderr] 295 | #[derive(Clone, Debug, Hash, RustcEncodable, RustcDecodable)]
[INFO] [stderr]     |                                              ^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] error: `RustcEncodable` is unstable
[INFO] [stderr]    --> src/semiring/floatweight.rs:295:30
[INFO] [stderr]     |
[INFO] [stderr] 295 | #[derive(Clone, Debug, Hash, RustcEncodable, RustcDecodable)]
[INFO] [stderr]     |                              ^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] error: `RustcDecodable` is unstable
[INFO] [stderr]   --> src/wfst_vec.rs:21:51
[INFO] [stderr]    |
[INFO] [stderr] 21 | #[derive(PartialEq, Clone, Debug, RustcEncodable, RustcDecodable)]
[INFO] [stderr]    |                                                   ^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] error: `RustcEncodable` is unstable
[INFO] [stderr]   --> src/wfst_vec.rs:21:35
[INFO] [stderr]    |
[INFO] [stderr] 21 | #[derive(PartialEq, Clone, Debug, RustcEncodable, RustcDecodable)]
[INFO] [stderr]    |                                   ^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] error: `RustcDecodable` is unstable
[INFO] [stderr]   --> src/wfst_vec.rs:92:40
[INFO] [stderr]    |
[INFO] [stderr] 92 | #[derive(Clone, Debug, RustcEncodable, RustcDecodable)]
[INFO] [stderr]    |                                        ^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] error: `RustcEncodable` is unstable
[INFO] [stderr]   --> src/wfst_vec.rs:92:24
[INFO] [stderr]    |
[INFO] [stderr] 92 | #[derive(Clone, Debug, RustcEncodable, RustcDecodable)]
[INFO] [stderr]    |                        ^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] error: `RustcDecodable` is unstable
[INFO] [stderr]    --> src/wfst_vec.rs:106:40
[INFO] [stderr]     |
[INFO] [stderr] 106 | #[derive(Clone, Debug, RustcEncodable, RustcDecodable)]
[INFO] [stderr]     |                                        ^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] error: `RustcEncodable` is unstable
[INFO] [stderr]    --> src/wfst_vec.rs:106:24
[INFO] [stderr]     |
[INFO] [stderr] 106 | #[derive(Clone, Debug, RustcEncodable, RustcDecodable)]
[INFO] [stderr]     |                        ^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] error: `RustcDecodable` is unstable
[INFO] [stderr]   --> src/semiring/floatweight.rs:39:46
[INFO] [stderr]    |
[INFO] [stderr] 39 | #[derive(Clone, Debug, Hash, RustcEncodable, RustcDecodable)]
[INFO] [stderr]    |                                              ^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[deny(crater_run)] on by default
[INFO] [stderr] 
[INFO] [stderr] error: `RustcEncodable` is unstable
[INFO] [stderr]   --> src/semiring/floatweight.rs:39:30
[INFO] [stderr]    |
[INFO] [stderr] 39 | #[derive(Clone, Debug, Hash, RustcEncodable, RustcDecodable)]
[INFO] [stderr]    |                              ^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] error: `RustcDecodable` is unstable
[INFO] [stderr]    --> src/semiring/floatweight.rs:164:46
[INFO] [stderr]     |
[INFO] [stderr] 164 | #[derive(Clone, Debug, Hash, RustcEncodable, RustcDecodable)]
[INFO] [stderr]     |                                              ^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] error: `RustcEncodable` is unstable
[INFO] [stderr]    --> src/semiring/floatweight.rs:164:30
[INFO] [stderr]     |
[INFO] [stderr] 164 | #[derive(Clone, Debug, Hash, RustcEncodable, RustcDecodable)]
[INFO] [stderr]     |                              ^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] error: `RustcDecodable` is unstable
[INFO] [stderr]    --> src/semiring/floatweight.rs:295:46
[INFO] [stderr]     |
[INFO] [stderr] 295 | #[derive(Clone, Debug, Hash, RustcEncodable, RustcDecodable)]
[INFO] [stderr]     |                                              ^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] error: `RustcEncodable` is unstable
[INFO] [stderr]    --> src/semiring/floatweight.rs:295:30
[INFO] [stderr]     |
[INFO] [stderr] 295 | #[derive(Clone, Debug, Hash, RustcEncodable, RustcDecodable)]
[INFO] [stderr]     |                              ^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] error: `RustcDecodable` is unstable
[INFO] [stderr]   --> src/wfst_vec.rs:21:51
[INFO] [stderr]    |
[INFO] [stderr] 21 | #[derive(PartialEq, Clone, Debug, RustcEncodable, RustcDecodable)]
[INFO] [stderr]    |                                                   ^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] error: `RustcEncodable` is unstable
[INFO] [stderr]   --> src/wfst_vec.rs:21:35
[INFO] [stderr]    |
[INFO] [stderr] 21 | #[derive(PartialEq, Clone, Debug, RustcEncodable, RustcDecodable)]
[INFO] [stderr]    |                                   ^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] error: `RustcDecodable` is unstable
[INFO] [stderr]   --> src/wfst_vec.rs:92:40
[INFO] [stderr]    |
[INFO] [stderr] 92 | #[derive(Clone, Debug, RustcEncodable, RustcDecodable)]
[INFO] [stderr]    |                                        ^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] error: `RustcEncodable` is unstable
[INFO] [stderr]   --> src/wfst_vec.rs:92:24
[INFO] [stderr]    |
[INFO] [stderr] 92 | #[derive(Clone, Debug, RustcEncodable, RustcDecodable)]
[INFO] [stderr]    |                        ^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] error: `RustcDecodable` is unstable
[INFO] [stderr]    --> src/wfst_vec.rs:106:40
[INFO] [stderr]     |
[INFO] [stderr] 106 | #[derive(Clone, Debug, RustcEncodable, RustcDecodable)]
[INFO] [stderr]     |                                        ^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] error: `RustcEncodable` is unstable
[INFO] [stderr]    --> src/wfst_vec.rs:106:24
[INFO] [stderr]     |
[INFO] [stderr] 106 | #[derive(Clone, Debug, RustcEncodable, RustcDecodable)]
[INFO] [stderr]     |                        ^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] error: aborting due to 12 previous errors
[INFO] [stderr] 
[INFO] [stderr] error: Could not compile `wfst`.
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stderr] error: aborting due to 12 previous errors
[INFO] [stderr] 
[INFO] [stderr] error: Could not compile `wfst`.
[INFO] [stderr] 
[INFO] [stderr] To learn more, run the command again with --verbose.
[INFO] running `"docker" "inspect" "24c0e3dcbcadfd669012c438fa0a6aec23b25debca0a6146e8160c451768705b"`
[INFO] running `"docker" "rm" "-f" "24c0e3dcbcadfd669012c438fa0a6aec23b25debca0a6146e8160c451768705b"`
[INFO] [stdout] 24c0e3dcbcadfd669012c438fa0a6aec23b25debca0a6146e8160c451768705b