[INFO] crate ufmt 0.1.0-beta.5 is already in cache
[INFO] extracting crate ufmt 0.1.0-beta.5 into work/ex/beta-1.37-6/sources/1.36.0/reg/ufmt/0.1.0-beta.5
[INFO] extracting crate ufmt 0.1.0-beta.5 into work/ex/beta-1.37-6/sources/beta-2019-07-23/reg/ufmt/0.1.0-beta.5
[INFO] validating manifest of ufmt-0.1.0-beta.5 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 ufmt-0.1.0-beta.5 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 ufmt-0.1.0-beta.5
[INFO] finished frobbing ufmt-0.1.0-beta.5
[INFO] frobbed toml for ufmt-0.1.0-beta.5 written to work/ex/beta-1.37-6/sources/1.36.0/reg/ufmt/0.1.0-beta.5/Cargo.toml
[INFO] started frobbing ufmt-0.1.0-beta.5
[INFO] finished frobbing ufmt-0.1.0-beta.5
[INFO] frobbed toml for ufmt-0.1.0-beta.5 written to work/ex/beta-1.37-6/sources/beta-2019-07-23/reg/ufmt/0.1.0-beta.5/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] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+beta-2019-07-23" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] testing ufmt-0.1.0-beta.5 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-6/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/ufmt/0.1.0-beta.5:/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] 162cfc71af38b1b4ffea35eacbaae348d7b145ff75cb32a2fd197409f088a32a
[INFO] running `"docker" "start" "-a" "162cfc71af38b1b4ffea35eacbaae348d7b145ff75cb32a2fd197409f088a32a"`
[INFO] [stderr]    Compiling ufmt-macros v0.1.0-beta.4
[INFO] [stderr]    Compiling ufmt v0.1.0-beta.5 (/opt/crater/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 3.13s
[INFO] running `"docker" "inspect" "162cfc71af38b1b4ffea35eacbaae348d7b145ff75cb32a2fd197409f088a32a"`
[INFO] running `"docker" "rm" "-f" "162cfc71af38b1b4ffea35eacbaae348d7b145ff75cb32a2fd197409f088a32a"`
[INFO] [stdout] 162cfc71af38b1b4ffea35eacbaae348d7b145ff75cb32a2fd197409f088a32a
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.37-6/worker-6/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/ufmt/0.1.0-beta.5:/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] fe3f4379cd12e4c8bad92c00b32b7b70f5717e6b6c2d3c1c9f799bb9d50cab10
[INFO] running `"docker" "start" "-a" "fe3f4379cd12e4c8bad92c00b32b7b70f5717e6b6c2d3c1c9f799bb9d50cab10"`
[INFO] [stderr]    Compiling ufmt v0.1.0-beta.5 (/opt/crater/workdir)
[INFO] [stderr] error: run `cargo test --features std` instead of `cargo test`
[INFO] [stderr]    --> src/lib.rs:234:1
[INFO] [stderr]     |
[INFO] [stderr] 234 | compile_error!("run `cargo test --features std` instead of `cargo test`");
[INFO] [stderr]     | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] error[E0554]: #![feature] may not be used on the beta release channel
[INFO] [stderr]    --> src/lib.rs:203:19
[INFO] [stderr]     |
[INFO] [stderr] 203 | #![cfg_attr(test, feature(proc_macro_hygiene))]
[INFO] [stderr]     |                   ^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] error: aborting due to 2 previous errors
[INFO] [stderr] 
[INFO] [stderr] For more information about this error, try `rustc --explain E0554`.
[INFO] [stderr] error: Could not compile `ufmt`.
[INFO] [stderr] 
[INFO] [stderr] To learn more, run the command again with --verbose.
[INFO] running `"docker" "inspect" "fe3f4379cd12e4c8bad92c00b32b7b70f5717e6b6c2d3c1c9f799bb9d50cab10"`
[INFO] running `"docker" "rm" "-f" "fe3f4379cd12e4c8bad92c00b32b7b70f5717e6b6c2d3c1c9f799bb9d50cab10"`
[INFO] [stdout] fe3f4379cd12e4c8bad92c00b32b7b70f5717e6b6c2d3c1c9f799bb9d50cab10