Sep 10 16:09:40.110 INFO checking json-codec-0.5.0 against master#f50b7758f4dc85dc1c5e38258adaa94213ac6ed1 for pr-54090
Sep 10 16:09:40.110 INFO running: cargo +f50b7758f4dc85dc1c5e38258adaa94213ac6ed1-alt check --frozen --all --all-targets
Sep 10 16:09:40.110 INFO running `"docker" "create" "-v" "/home/ec2-user/crater/./work/local/test-source/worker-0/pr-54090/master#f50b7758f4dc85dc1c5e38258adaa94213ac6ed1:/source:ro,Z" "-v" "/home/ec2-user/crater/./work/local/target-dirs/pr-54090/worker-0/master#f50b7758f4dc85dc1c5e38258adaa94213ac6ed1:/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 +f50b7758f4dc85dc1c5e38258adaa94213ac6ed1-alt check --frozen --all --all-targets" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=warn" "-m" "2G" "crater"`
Sep 10 16:09:40.279 INFO blam! a2f511da691421880634d7d59186280a90e2dad7995e57071656b8188cf6734f
Sep 10 16:09:40.281 INFO running `"docker" "start" "-a" "a2f511da691421880634d7d59186280a90e2dad7995e57071656b8188cf6734f"`
Sep 10 16:09:41.082 INFO kablam! usermod: no changes
Sep 10 16:09:41.189 INFO kablam!     Checking json-codec v0.5.0 (file:///source)
Sep 10 16:09:41.189 INFO kablam!     Checking quickcheck v0.7.1
Sep 10 16:09:43.409 INFO kablam! error[E0599]: no method named `gen_range` found for type `&mut G` in the current scope
Sep 10 16:09:43.410 INFO kablam!    --> tests/properties.rs:132:13
Sep 10 16:09:43.410 INFO kablam!     |
Sep 10 16:09:43.410 INFO kablam! 132 |     match g.gen_range(1, 8) {
Sep 10 16:09:43.410 INFO kablam!     |             ^^^^^^^^^
Sep 10 16:09:43.410 INFO kablam!     |
Sep 10 16:09:43.410 INFO kablam!     = help: items from traits can only be used if the trait is in scope
Sep 10 16:09:43.410 INFO kablam! help: the following trait is implemented but not in scope, perhaps add a `use` for it:
Sep 10 16:09:43.410 INFO kablam!     |
Sep 10 16:09:43.410 INFO kablam! 4   | use rand::Rng;
Sep 10 16:09:43.410 INFO kablam!     |
Sep 10 16:09:43.410 INFO kablam! 
Sep 10 16:09:43.411 INFO kablam! error[E0599]: no method named `gen` found for type `&mut G` in the current scope
Sep 10 16:09:43.411 INFO kablam!    --> tests/properties.rs:135:29
Sep 10 16:09:43.411 INFO kablam!     |
Sep 10 16:09:43.411 INFO kablam! 135 |         3 => Json::Number(g.gen()),
Sep 10 16:09:43.411 INFO kablam!     |                             ^^^
Sep 10 16:09:43.411 INFO kablam!     |
Sep 10 16:09:43.411 INFO kablam!     = help: items from traits can only be used if the trait is in scope
Sep 10 16:09:43.411 INFO kablam! help: the following trait is implemented but not in scope, perhaps add a `use` for it:
Sep 10 16:09:43.411 INFO kablam!     |
Sep 10 16:09:43.411 INFO kablam! 4   | use rand::Rng;
Sep 10 16:09:43.411 INFO kablam!     |
Sep 10 16:09:43.411 INFO kablam! 
Sep 10 16:09:43.417 INFO kablam! error[E0599]: no method named `gen_range` found for type `&mut G` in the current scope
Sep 10 16:09:43.417 INFO kablam!    --> tests/properties.rs:154:21
Sep 10 16:09:43.417 INFO kablam!     |
Sep 10 16:09:43.417 INFO kablam! 154 |     let     len = g.gen_range(0, 64);
Sep 10 16:09:43.417 INFO kablam!     |                     ^^^^^^^^^
Sep 10 16:09:43.417 INFO kablam!     |
Sep 10 16:09:43.417 INFO kablam!     = help: items from traits can only be used if the trait is in scope
Sep 10 16:09:43.417 INFO kablam! help: the following trait is implemented but not in scope, perhaps add a `use` for it:
Sep 10 16:09:43.417 INFO kablam!     |
Sep 10 16:09:43.417 INFO kablam! 4   | use rand::Rng;
Sep 10 16:09:43.417 INFO kablam!     |
Sep 10 16:09:43.417 INFO kablam! 
Sep 10 16:09:43.421 INFO kablam! error[E0599]: no method named `gen_range` found for type `&mut G` in the current scope
Sep 10 16:09:43.421 INFO kablam!    --> tests/properties.rs:163:21
Sep 10 16:09:43.421 INFO kablam!     |
Sep 10 16:09:43.421 INFO kablam! 163 |     let     len = g.gen_range(0, 64);
Sep 10 16:09:43.421 INFO kablam!     |                     ^^^^^^^^^
Sep 10 16:09:43.421 INFO kablam!     |
Sep 10 16:09:43.421 INFO kablam!     = help: items from traits can only be used if the trait is in scope
Sep 10 16:09:43.421 INFO kablam! help: the following trait is implemented but not in scope, perhaps add a `use` for it:
Sep 10 16:09:43.421 INFO kablam!     |
Sep 10 16:09:43.421 INFO kablam! 4   | use rand::Rng;
Sep 10 16:09:43.421 INFO kablam!     |
Sep 10 16:09:43.421 INFO kablam! 
Sep 10 16:09:43.431 INFO kablam! error: aborting due to 4 previous errors
Sep 10 16:09:43.431 INFO kablam! 
Sep 10 16:09:43.431 INFO kablam! For more information about this error, try `rustc --explain E0599`.
Sep 10 16:09:43.441 INFO kablam! error: Could not compile `json-codec`.
Sep 10 16:09:43.441 INFO kablam! warning: build failed, waiting for other jobs to finish...
Sep 10 16:09:43.497 INFO kablam! error: build failed
Sep 10 16:09:43.499 INFO kablam! su: No module specific data is present
Sep 10 16:09:43.970 INFO running `"docker" "rm" "-f" "a2f511da691421880634d7d59186280a90e2dad7995e57071656b8188cf6734f"`
Sep 10 16:09:44.058 INFO blam! a2f511da691421880634d7d59186280a90e2dad7995e57071656b8188cf6734f