[INFO] updating cached repository selaux/qrcode-wasm
[INFO] running `"git" "fetch" "--all"`
[INFO] [stdout] Fetching origin
[INFO] [stderr] From git://github.com/selaux/qrcode-wasm
[INFO] [stderr]  * branch            HEAD       -> FETCH_HEAD
[INFO] running `"git" "clone" "work/cache/sources/gh/selaux/qrcode-wasm" "work/ex/beta-1.38-1/sources/1.37.0/gh/selaux/qrcode-wasm"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.38-1/sources/1.37.0/gh/selaux/qrcode-wasm'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/selaux/qrcode-wasm" "work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/selaux/qrcode-wasm"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/selaux/qrcode-wasm'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] 039bd30b169dcac99af3dc6509ca29e6ea0efc89
[INFO] sha for GitHub repo selaux/qrcode-wasm: 039bd30b169dcac99af3dc6509ca29e6ea0efc89
[INFO] validating manifest of selaux/qrcode-wasm on toolchain 1.37.0
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+1.37.0" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] validating manifest of selaux/qrcode-wasm on toolchain beta-2019-08-13
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+beta-2019-08-13" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started frobbing selaux/qrcode-wasm
[INFO] finished frobbing selaux/qrcode-wasm
[INFO] frobbed toml for selaux/qrcode-wasm written to work/ex/beta-1.38-1/sources/1.37.0/gh/selaux/qrcode-wasm/Cargo.toml
[INFO] started frobbing selaux/qrcode-wasm
[INFO] finished frobbing selaux/qrcode-wasm
[INFO] frobbed toml for selaux/qrcode-wasm written to work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/selaux/qrcode-wasm/Cargo.toml
[INFO] crate selaux/qrcode-wasm already has a lockfile, it will not be regenerated
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+1.37.0" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+beta-2019-08-13" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] testing selaux/qrcode-wasm against beta-2019-08-13 for beta-1.38-1
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-3/beta-2019-08-13:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/selaux/qrcode-wasm:/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-2019-08-13" "build" "--frozen"`
[INFO] [stdout] eaec4342df01d04334e6ad7247aa1fad5a0d37780fd96e5f7156e8b89dfab86d
[INFO] running `"docker" "start" "-a" "eaec4342df01d04334e6ad7247aa1fad5a0d37780fd96e5f7156e8b89dfab86d"`
[INFO] [stderr]    Compiling assert_approx_eq v1.1.0
[INFO] [stderr]    Compiling dbscan v0.2.0
[INFO] [stderr]    Compiling memchr v2.1.2
[INFO] [stderr]    Compiling syn v0.15.24
[INFO] [stderr]    Compiling num-bigint v0.2.2
[INFO] [stderr]    Compiling rusttype v0.7.3
[INFO] [stderr]    Compiling rayon-core v1.4.1
[INFO] [stderr]    Compiling aho-corasick v0.6.9
[INFO] [stderr]    Compiling nom v4.1.1
[INFO] [stderr]    Compiling rayon v1.0.3
[INFO] [stderr]    Compiling regex v1.1.0
[INFO] [stderr]    Compiling num-rational v0.2.1
[INFO] [stderr]    Compiling weedle v0.8.0
[INFO] [stderr]    Compiling num v0.2.0
[INFO] [stderr]    Compiling env_logger v0.6.0
[INFO] [stderr]    Compiling env_logger v0.5.13
[INFO] [stderr]    Compiling jpeg-decoder v0.1.15
[INFO] [stderr]    Compiling quickcheck v0.6.2
[INFO] [stderr]    Compiling synstructure v0.10.1
[INFO] [stderr]    Compiling wasm-bindgen-backend v0.2.29
[INFO] [stderr]    Compiling wasm-bindgen-macro-support v0.2.29
[INFO] [stderr]    Compiling failure_derive v0.1.5
[INFO] [stderr]    Compiling num-derive v0.2.3
[INFO] [stderr]    Compiling ruukh-codegen v0.0.3
[INFO] [stderr]    Compiling failure v0.1.5
[INFO] [stderr]    Compiling wasm-bindgen-macro v0.2.29
[INFO] [stderr]    Compiling wasm-bindgen-webidl v0.2.23
[INFO] [stderr]    Compiling tiff v0.2.1
[INFO] [stderr]    Compiling wasm-bindgen v0.2.29
[INFO] [stderr]    Compiling image v0.20.1
[INFO] [stderr]    Compiling js-sys v0.3.6
[INFO] [stderr]    Compiling console_error_panic_hook v0.1.5
[INFO] [stderr]    Compiling web-sys v0.3.6 (https://github.com/selaux/wasm-bindgen.git?rev=integration#c1f9003e)
[INFO] [stderr]    Compiling wasm-bindgen-futures v0.3.6
[INFO] [stderr]    Compiling imageproc v0.17.0
[INFO] [stderr]    Compiling qrende v0.1.0 (https://github.com/selaux/qrende.git#5b129ec5)
[INFO] [stderr]    Compiling ruukh v0.0.3
[INFO] [stderr]    Compiling qrcode-wasm v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] error[E0554]: `#![feature]` may not be used on the beta release channel
[INFO] [stderr]  --> src/lib.rs:1:1
[INFO] [stderr]   |
[INFO] [stderr] 1 | #![feature(proc_macro_hygiene, decl_macro)]
[INFO] [stderr]   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]    --> src/lib.rs:113:19
[INFO] [stderr]     |
[INFO] [stderr] 113 |         }) as Box<Fn()>);
[INFO] [stderr]     |                   ^^^^ help: use `dyn`: `dyn Fn()`
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(bare_trait_objects)]` on by default
[INFO] [stderr] 
[INFO] [stderr] error: aborting due to previous error
[INFO] [stderr] 
[INFO] [stderr] For more information about this error, try `rustc --explain E0554`.
[INFO] [stderr] error: Could not compile `qrcode-wasm`.
[INFO] [stderr] 
[INFO] [stderr] To learn more, run the command again with --verbose.
[INFO] running `"docker" "inspect" "eaec4342df01d04334e6ad7247aa1fad5a0d37780fd96e5f7156e8b89dfab86d"`
[INFO] running `"docker" "rm" "-f" "eaec4342df01d04334e6ad7247aa1fad5a0d37780fd96e5f7156e8b89dfab86d"`
[INFO] [stdout] eaec4342df01d04334e6ad7247aa1fad5a0d37780fd96e5f7156e8b89dfab86d