[INFO] crate weft 0.1.0 is already in cache
[INFO] extracting crate weft 0.1.0 into work/ex/beta-1.37-6/sources/1.36.0/reg/weft/0.1.0
[INFO] extracting crate weft 0.1.0 into work/ex/beta-1.37-6/sources/beta-2019-07-23/reg/weft/0.1.0
[INFO] validating manifest of weft-0.1.0 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 weft-0.1.0 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 weft-0.1.0
[INFO] finished frobbing weft-0.1.0
[INFO] frobbed toml for weft-0.1.0 written to work/ex/beta-1.37-6/sources/1.36.0/reg/weft/0.1.0/Cargo.toml
[INFO] started frobbing weft-0.1.0
[INFO] finished frobbing weft-0.1.0
[INFO] frobbed toml for weft-0.1.0 written to work/ex/beta-1.37-6/sources/beta-2019-07-23/reg/weft/0.1.0/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] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded weft_derive v0.1.1
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+beta-2019-07-23" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] testing weft-0.1.0 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-4/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/weft/0.1.0:/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=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] 41f42beb6721dff7314021ee51c22ff3b48dc160956a8db9ce8421f9fb0e96ee
[INFO] running `"docker" "start" "-a" "41f42beb6721dff7314021ee51c22ff3b48dc160956a8db9ce8421f9fb0e96ee"`
[INFO] [stderr]    Compiling new_debug_unreachable v1.0.3
[INFO] [stderr]    Compiling procedural-masquerade v0.1.6
[INFO] [stderr]    Compiling thin-slice v0.1.1
[INFO] [stderr]    Compiling dtoa-short v0.3.2
[INFO] [stderr]    Compiling servo_arc v0.1.1
[INFO] [stderr]    Compiling cssparser v0.25.8
[INFO] [stderr]    Compiling html5ever v0.23.0
[INFO] [stderr]    Compiling html5ever v0.24.0
[INFO] [stderr]    Compiling html5ever v0.22.5
[INFO] [stderr]    Compiling string_cache_codegen v0.4.2
[INFO] [stderr]    Compiling futf v0.1.4
[INFO] [stderr]    Compiling selectors v0.21.0
[INFO] [stderr]    Compiling cssparser-macros v0.3.5
[INFO] [stderr]    Compiling tendril v0.4.1
[INFO] [stderr]    Compiling string_cache v0.7.3
[INFO] [stderr]    Compiling markup5ever v0.8.1
[INFO] [stderr]    Compiling markup5ever v0.9.0
[INFO] [stderr]    Compiling markup5ever v0.7.5
[INFO] [stderr]    Compiling kuchiki v0.7.3
[INFO] [stderr]    Compiling weft_derive v0.1.1
[INFO] [stderr]    Compiling weft v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] warning: unused import: `std::iter`
[INFO] [stderr]  --> src/template.rs:4:5
[INFO] [stderr]   |
[INFO] [stderr] 4 | use std::iter;
[INFO] [stderr]   |     ^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: #[warn(unused_imports)] on by default
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1m 18s
[INFO] running `"docker" "inspect" "41f42beb6721dff7314021ee51c22ff3b48dc160956a8db9ce8421f9fb0e96ee"`
[INFO] running `"docker" "rm" "-f" "41f42beb6721dff7314021ee51c22ff3b48dc160956a8db9ce8421f9fb0e96ee"`
[INFO] [stdout] 41f42beb6721dff7314021ee51c22ff3b48dc160956a8db9ce8421f9fb0e96ee
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.37-6/worker-4/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/weft/0.1.0:/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=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] d2efb8b3142357c46f9e8caea0dc493a5d77af64982184b118ac2941f28a6095
[INFO] running `"docker" "start" "-a" "d2efb8b3142357c46f9e8caea0dc493a5d77af64982184b118ac2941f28a6095"`
[INFO] [stderr]    Compiling weft v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] warning: unused import: `std::iter`
[INFO] [stderr]  --> src/template.rs:4:5
[INFO] [stderr]   |
[INFO] [stderr] 4 | use std::iter;
[INFO] [stderr]   |     ^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: #[warn(unused_imports)] on by default
[INFO] [stderr] 
[INFO] [stderr] error[E0432]: unresolved import `weft`
[INFO] [stderr]  --> tests/canary.rs:8:10
[INFO] [stderr]   |
[INFO] [stderr] 8 | #[derive(WeftRenderable)]
[INFO] [stderr]   |          ^^^^^^^^^^^^^^ could not find `prelude` in `weft`
[INFO] [stderr] 
[INFO] [stderr] error[E0432]: unresolved import `weft`
[INFO] [stderr]   --> tests/canary.rs:28:14
[INFO] [stderr]    |
[INFO] [stderr] 28 |     #[derive(WeftRenderable)]
[INFO] [stderr]    |              ^^^^^^^^^^^^^^ could not find `prelude` in `weft`
[INFO] [stderr] 
[INFO] [stderr] error[E0432]: unresolved import `weft`
[INFO] [stderr]   --> tests/canary.rs:57:10
[INFO] [stderr]    |
[INFO] [stderr] 57 | #[derive(WeftRenderable)]
[INFO] [stderr]    |          ^^^^^^^^^^^^^^ could not find `prelude` in `weft`
[INFO] [stderr] 
[INFO] [stderr] error[E0432]: unresolved import `weft`
[INFO] [stderr]   --> tests/canary.rs:75:10
[INFO] [stderr]    |
[INFO] [stderr] 75 | #[derive(WeftRenderable)]
[INFO] [stderr]    |          ^^^^^^^^^^^^^^ could not find `prelude` in `weft`
[INFO] [stderr] 
[INFO] [stderr] error[E0432]: unresolved import `weft`
[INFO] [stderr]   --> tests/canary.rs:96:10
[INFO] [stderr]    |
[INFO] [stderr] 96 | #[derive(WeftRenderable)]
[INFO] [stderr]    |          ^^^^^^^^^^^^^^ could not find `prelude` in `weft`
[INFO] [stderr] 
[INFO] [stderr] error[E0432]: unresolved import `weft`
[INFO] [stderr]    --> tests/canary.rs:119:10
[INFO] [stderr]     |
[INFO] [stderr] 119 | #[derive(WeftRenderable)]
[INFO] [stderr]     |          ^^^^^^^^^^^^^^ could not find `prelude` in `weft`
[INFO] [stderr] 
[INFO] [stderr] error[E0432]: unresolved import `weft`
[INFO] [stderr]    --> tests/canary.rs:156:10
[INFO] [stderr]     |
[INFO] [stderr] 156 | #[derive(WeftRenderable)]
[INFO] [stderr]     |          ^^^^^^^^^^^^^^ could not find `prelude` in `weft`
[INFO] [stderr] 
[INFO] [stderr] error[E0432]: unresolved import `weft`
[INFO] [stderr]    --> tests/canary.rs:179:10
[INFO] [stderr]     |
[INFO] [stderr] 179 | #[derive(WeftRenderable)]
[INFO] [stderr]     |          ^^^^^^^^^^^^^^ could not find `prelude` in `weft`
[INFO] [stderr] 
[INFO] [stderr] error[E0432]: unresolved import `weft`
[INFO] [stderr]    --> tests/canary.rs:207:14
[INFO] [stderr]     |
[INFO] [stderr] 207 |     #[derive(WeftRenderable)]
[INFO] [stderr]     |              ^^^^^^^^^^^^^^ could not find `prelude` in `weft`
[INFO] [stderr] 
[INFO] [stderr] error[E0432]: unresolved import `weft`
[INFO] [stderr]    --> tests/canary.rs:225:14
[INFO] [stderr]     |
[INFO] [stderr] 225 |     #[derive(WeftRenderable)]
[INFO] [stderr]     |              ^^^^^^^^^^^^^^ could not find `prelude` in `weft`
[INFO] [stderr] 
[INFO] [stderr] error[E0432]: unresolved import `weft`
[INFO] [stderr]    --> tests/canary.rs:243:14
[INFO] [stderr]     |
[INFO] [stderr] 243 |     #[derive(WeftRenderable)]
[INFO] [stderr]     |              ^^^^^^^^^^^^^^ could not find `prelude` in `weft`
[INFO] [stderr] 
[INFO] [stderr] error[E0432]: unresolved import `weft`
[INFO] [stderr]    --> tests/canary.rs:261:14
[INFO] [stderr]     |
[INFO] [stderr] 261 |     #[derive(WeftRenderable)]
[INFO] [stderr]     |              ^^^^^^^^^^^^^^ could not find `prelude` in `weft`
[INFO] [stderr] 
[INFO] [stderr] error: aborting due to 12 previous errors
[INFO] [stderr] 
[INFO] [stderr] For more information about this error, try `rustc --explain E0432`.
[INFO] [stderr] error: Could not compile `weft`.
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stderr] error: build failed
[INFO] running `"docker" "inspect" "d2efb8b3142357c46f9e8caea0dc493a5d77af64982184b118ac2941f28a6095"`
[INFO] running `"docker" "rm" "-f" "d2efb8b3142357c46f9e8caea0dc493a5d77af64982184b118ac2941f28a6095"`
[INFO] [stdout] d2efb8b3142357c46f9e8caea0dc493a5d77af64982184b118ac2941f28a6095