Oct 12 13:43:33.759 INFO checking simbo1905/extension_methods against try#4021bd0b3c5815b087d6db10ce461e7e4854ade7 for pr-54977
Oct 12 13:43:33.761 INFO running `"docker" "create" "-v" "/mnt/big/crater/./work/local/target-dirs/pr-54977/worker-2/try#4021bd0b3c5815b087d6db10ce461e7e4854ade7:/target:rw,Z" "-v" "/mnt/big/crater/./work/local/test-source/worker-2/pr-54977/try#4021bd0b3c5815b087d6db10ce461e7e4854ade7:/source:ro,Z" "-v" "/mnt/big/crater/./work/local/cargo-home:/cargo-home:ro,Z" "-v" "/mnt/big/crater/./work/local/rustup-home:/rustup-home:ro,Z" "-e" "USER_ID=1000" "-e" "SOURCE_DIR=/source" "-e" "USER_ID=1000" "-e" "CMD=cargo +4021bd0b3c5815b087d6db10ce461e7e4854ade7-alt check --frozen --all --all-targets" "-e" "CARGO_TARGET_DIR=/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-e" "CARGO_HOME=/cargo-home" "-e" "RUSTUP_HOME=/rustup-home" "-m" "1536M" "--network" "none" "crater"`
Oct 12 13:43:34.193 INFO blam! ab4da528cd173ac3bbda2087ef95c92f46a6908361c92a71c1c95843cdf21600
Oct 12 13:43:34.204 INFO running `"docker" "start" "-a" "ab4da528cd173ac3bbda2087ef95c92f46a6908361c92a71c1c95843cdf21600"`
Oct 12 13:43:35.204 INFO kablam! usermod: no changes
Oct 12 13:43:35.295 INFO kablam!     Checking some_library v0.1.0 (/source/some_library)
Oct 12 13:43:35.304 INFO kablam!     Checking serde_json v1.0.2
Oct 12 13:43:37.992 INFO kablam!     Checking some_extension v0.1.0 (/source/some_extension)
Oct 12 13:43:38.404 INFO kablam! warning: the trait `JSON` cannot be made into an object
Oct 12 13:43:38.404 INFO kablam!   --> some_extension/src/lib.rs:39:5
Oct 12 13:43:38.404 INFO kablam!    |
Oct 12 13:43:38.404 INFO kablam! 39 | /     fn to_json(&self) -> String
Oct 12 13:43:38.404 INFO kablam! 40 | |             where Self: Serialize {
Oct 12 13:43:38.404 INFO kablam! 41 | |         return serde_json::to_string(&self).unwrap();
Oct 12 13:43:38.404 INFO kablam! 42 | |     }
Oct 12 13:43:38.404 INFO kablam!    | |_____^
Oct 12 13:43:38.404 INFO kablam!    |
Oct 12 13:43:38.404 INFO kablam!    = note: #[warn(where_clauses_object_safety)] on by default
Oct 12 13:43:38.404 INFO kablam!    = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release!
Oct 12 13:43:38.404 INFO kablam!    = note: for more information, see issue #51443 <https://github.com/rust-lang/rust/issues/51443>
Oct 12 13:43:38.404 INFO kablam!    = note: method `to_json` references the `Self` type in where clauses
Oct 12 13:43:38.404 INFO kablam! 
Oct 12 13:43:38.544 INFO kablam!     Checking extension_methods v0.1.0 (/source)
Oct 12 13:43:39.225 INFO kablam! warning: the trait `some_extension::JSON` cannot be made into an object
Oct 12 13:43:39.225 INFO kablam!   --> /source/some_extension/src/lib.rs:39:5
Oct 12 13:43:39.225 INFO kablam!    |
Oct 12 13:43:39.225 INFO kablam! 39 | /     fn to_json(&self) -> String
Oct 12 13:43:39.225 INFO kablam! 40 | |             where Self: Serialize {
Oct 12 13:43:39.225 INFO kablam! 41 | |         return serde_json::to_string(&self).unwrap();
Oct 12 13:43:39.225 INFO kablam! 42 | |     }
Oct 12 13:43:39.225 INFO kablam!    | |_____^
Oct 12 13:43:39.225 INFO kablam!    |
Oct 12 13:43:39.225 INFO kablam!    = note: #[warn(where_clauses_object_safety)] on by default
Oct 12 13:43:39.225 INFO kablam!    = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release!
Oct 12 13:43:39.226 INFO kablam!    = note: for more information, see issue #51443 <https://github.com/rust-lang/rust/issues/51443>
Oct 12 13:43:39.226 INFO kablam!    = note: method `to_json` references the `Self` type in where clauses
Oct 12 13:43:39.226 INFO kablam! 
Oct 12 13:43:39.256 INFO kablam! warning: the trait `some_extension::JSON` cannot be made into an object
Oct 12 13:43:39.257 INFO kablam!   --> /source/some_extension/src/lib.rs:39:5
Oct 12 13:43:39.257 INFO kablam!    |
Oct 12 13:43:39.257 INFO kablam! 39 | /     fn to_json(&self) -> String
Oct 12 13:43:39.258 INFO kablam! 40 | |             where Self: Serialize {
Oct 12 13:43:39.258 INFO kablam! 41 | |         return serde_json::to_string(&self).unwrap();
Oct 12 13:43:39.258 INFO kablam! 42 | |     }
Oct 12 13:43:39.258 INFO kablam!    | |_____^
Oct 12 13:43:39.258 INFO kablam!    |
Oct 12 13:43:39.258 INFO kablam!    = note: #[warn(where_clauses_object_safety)] on by default
Oct 12 13:43:39.258 INFO kablam!    = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release!
Oct 12 13:43:39.264 INFO kablam!    = note: for more information, see issue #51443 <https://github.com/rust-lang/rust/issues/51443>
Oct 12 13:43:39.264 INFO kablam!    = note: method `to_json` references the `Self` type in where clauses
Oct 12 13:43:39.264 INFO kablam! 
Oct 12 13:43:39.305 INFO kablam!     Finished dev [unoptimized + debuginfo] target(s) in 4.08s
Oct 12 13:43:39.309 INFO kablam! su: No module specific data is present
Oct 12 13:43:40.042 INFO running `"docker" "rm" "-f" "ab4da528cd173ac3bbda2087ef95c92f46a6908361c92a71c1c95843cdf21600"`
Oct 12 13:43:40.304 INFO blam! ab4da528cd173ac3bbda2087ef95c92f46a6908361c92a71c1c95843cdf21600