Sep 21 08:13:40.194 INFO checking json-codec-0.5.0 against master#f7f4c500b46603386e940f116b469c7adc043a6d for pr-54394
Sep 21 08:13:40.194 INFO running: cargo +f7f4c500b46603386e940f116b469c7adc043a6d-alt check --frozen --all --all-targets
Sep 21 08:13:40.194 INFO running `"docker" "create" "-v" "/home/ec2-user/crater/./work/local/test-source/worker-1/pr-54394/master#f7f4c500b46603386e940f116b469c7adc043a6d:/source:ro,Z" "-v" "/home/ec2-user/crater/./work/local/target-dirs/pr-54394/worker-1/master#f7f4c500b46603386e940f116b469c7adc043a6d:/target:rw,Z" "-v" "/home/ec2-user/crater/./work/local/cargo-home:/cargo-home:ro,Z" "-v" "/home/ec2-user/crater/./work/local/rustup-home:/rustup-home:ro,Z" "-e" "USER_ID=1000" "-e" "CMD=cargo +f7f4c500b46603386e940f116b469c7adc043a6d-alt check --frozen --all --all-targets" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-m" "1536M" "crater"`
Sep 21 08:13:40.367 INFO blam! 75a69194671fdc99152be64406dedfb1ca0e4d2edd31dfd7aa3cf1f47a194488
Sep 21 08:13:40.369 INFO running `"docker" "start" "-a" "75a69194671fdc99152be64406dedfb1ca0e4d2edd31dfd7aa3cf1f47a194488"`
Sep 21 08:13:41.885 INFO kablam! usermod: no changes
Sep 21 08:13:41.956 INFO kablam!     Checking json-codec v0.5.0 (/source)
Sep 21 08:13:43.578 INFO kablam! error[E0599]: no method named `gen_range` found for type `&mut G` in the current scope
Sep 21 08:13:43.578 INFO kablam!    --> tests/properties.rs:132:13
Sep 21 08:13:43.578 INFO kablam!     |
Sep 21 08:13:43.578 INFO kablam! 132 |     match g.gen_range(1, 8) {
Sep 21 08:13:43.578 INFO kablam!     |             ^^^^^^^^^
Sep 21 08:13:43.578 INFO kablam!     |
Sep 21 08:13:43.578 INFO kablam!     = help: items from traits can only be used if the trait is in scope
Sep 21 08:13:43.578 INFO kablam! help: the following trait is implemented but not in scope, perhaps add a `use` for it:
Sep 21 08:13:43.578 INFO kablam!     |
Sep 21 08:13:43.578 INFO kablam! 4   | use rand::Rng;
Sep 21 08:13:43.578 INFO kablam!     |
Sep 21 08:13:43.578 INFO kablam! 
Sep 21 08:13:43.578 INFO kablam! error[E0599]: no method named `gen` found for type `&mut G` in the current scope
Sep 21 08:13:43.578 INFO kablam!    --> tests/properties.rs:135:29
Sep 21 08:13:43.578 INFO kablam!     |
Sep 21 08:13:43.578 INFO kablam! 135 |         3 => Json::Number(g.gen()),
Sep 21 08:13:43.578 INFO kablam!     |                             ^^^
Sep 21 08:13:43.578 INFO kablam!     |
Sep 21 08:13:43.578 INFO kablam!     = help: items from traits can only be used if the trait is in scope
Sep 21 08:13:43.578 INFO kablam! help: the following trait is implemented but not in scope, perhaps add a `use` for it:
Sep 21 08:13:43.578 INFO kablam!     |
Sep 21 08:13:43.578 INFO kablam! 4   | use rand::Rng;
Sep 21 08:13:43.578 INFO kablam!     |
Sep 21 08:13:43.578 INFO kablam! 
Sep 21 08:13:43.586 INFO kablam! error[E0599]: no method named `gen_range` found for type `&mut G` in the current scope
Sep 21 08:13:43.586 INFO kablam!    --> tests/properties.rs:154:21
Sep 21 08:13:43.586 INFO kablam!     |
Sep 21 08:13:43.586 INFO kablam! 154 |     let     len = g.gen_range(0, 64);
Sep 21 08:13:43.586 INFO kablam!     |                     ^^^^^^^^^
Sep 21 08:13:43.586 INFO kablam!     |
Sep 21 08:13:43.586 INFO kablam!     = help: items from traits can only be used if the trait is in scope
Sep 21 08:13:43.586 INFO kablam! help: the following trait is implemented but not in scope, perhaps add a `use` for it:
Sep 21 08:13:43.586 INFO kablam!     |
Sep 21 08:13:43.586 INFO kablam! 4   | use rand::Rng;
Sep 21 08:13:43.586 INFO kablam!     |
Sep 21 08:13:43.586 INFO kablam! 
Sep 21 08:13:43.586 INFO kablam! error[E0599]: no method named `gen_range` found for type `&mut G` in the current scope
Sep 21 08:13:43.586 INFO kablam!    --> tests/properties.rs:163:21
Sep 21 08:13:43.586 INFO kablam!     |
Sep 21 08:13:43.586 INFO kablam! 163 |     let     len = g.gen_range(0, 64);
Sep 21 08:13:43.586 INFO kablam!     |                     ^^^^^^^^^
Sep 21 08:13:43.586 INFO kablam!     |
Sep 21 08:13:43.586 INFO kablam!     = help: items from traits can only be used if the trait is in scope
Sep 21 08:13:43.586 INFO kablam! help: the following trait is implemented but not in scope, perhaps add a `use` for it:
Sep 21 08:13:43.586 INFO kablam!     |
Sep 21 08:13:43.586 INFO kablam! 4   | use rand::Rng;
Sep 21 08:13:43.586 INFO kablam!     |
Sep 21 08:13:43.586 INFO kablam! 
Sep 21 08:13:43.602 INFO kablam! error: aborting due to 4 previous errors
Sep 21 08:13:43.602 INFO kablam! 
Sep 21 08:13:43.602 INFO kablam! For more information about this error, try `rustc --explain E0599`.
Sep 21 08:13:43.606 INFO kablam! error: Could not compile `json-codec`.
Sep 21 08:13:43.606 INFO kablam! 
Sep 21 08:13:43.606 INFO kablam! To learn more, run the command again with --verbose.
Sep 21 08:13:43.610 INFO kablam! su: No module specific data is present
Sep 21 08:13:44.703 INFO running `"docker" "rm" "-f" "75a69194671fdc99152be64406dedfb1ca0e4d2edd31dfd7aa3cf1f47a194488"`
Sep 21 08:13:44.821 INFO blam! 75a69194671fdc99152be64406dedfb1ca0e4d2edd31dfd7aa3cf1f47a194488