[INFO] crate vectorize_struct 0.1.3 is already in cache
[INFO] extracting crate vectorize_struct 0.1.3 into work/ex/beta-1.38-1/sources/1.37.0/reg/vectorize_struct/0.1.3
[INFO] extracting crate vectorize_struct 0.1.3 into work/ex/beta-1.38-1/sources/beta-2019-08-13/reg/vectorize_struct/0.1.3
[INFO] validating manifest of vectorize_struct-0.1.3 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 vectorize_struct-0.1.3 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 vectorize_struct-0.1.3
[INFO] finished frobbing vectorize_struct-0.1.3
[INFO] frobbed toml for vectorize_struct-0.1.3 written to work/ex/beta-1.38-1/sources/1.37.0/reg/vectorize_struct/0.1.3/Cargo.toml
[INFO] started frobbing vectorize_struct-0.1.3
[INFO] finished frobbing vectorize_struct-0.1.3
[INFO] frobbed toml for vectorize_struct-0.1.3 written to work/ex/beta-1.38-1/sources/beta-2019-08-13/reg/vectorize_struct/0.1.3/Cargo.toml
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+1.37.0" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+beta-2019-08-13" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"`
[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 vectorize_struct-0.1.3 against 1.37.0 for beta-1.38-1
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-1/1.37.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/1.37.0/reg/vectorize_struct/0.1.3:/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" "+1.37.0" "build" "--frozen"`
[INFO] [stdout] 68ad7cb1ab0567f85fdd4310a80316ceb2a77ea9aa70a0f767c1962941012595
[INFO] running `"docker" "start" "-a" "68ad7cb1ab0567f85fdd4310a80316ceb2a77ea9aa70a0f767c1962941012595"`
[INFO] [stderr] warning: library `vectorize_struct` should only specify `proc-macro = true` instead of setting `crate-type`
[INFO] [stderr]    Compiling syn v0.15.44
[INFO] [stderr]    Compiling vectorize_struct v0.1.3 (/opt/crater/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 14.94s
[INFO] running `"docker" "inspect" "68ad7cb1ab0567f85fdd4310a80316ceb2a77ea9aa70a0f767c1962941012595"`
[INFO] running `"docker" "rm" "-f" "68ad7cb1ab0567f85fdd4310a80316ceb2a77ea9aa70a0f767c1962941012595"`
[INFO] [stdout] 68ad7cb1ab0567f85fdd4310a80316ceb2a77ea9aa70a0f767c1962941012595
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-1/1.37.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/1.37.0/reg/vectorize_struct/0.1.3:/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" "+1.37.0" "test" "--frozen" "--no-run"`
[INFO] [stdout] 541dd56ae362f3674bc00863988c721ddbaccc4ef3cd5823c5ec23d76cc1b985
[INFO] running `"docker" "start" "-a" "541dd56ae362f3674bc00863988c721ddbaccc4ef3cd5823c5ec23d76cc1b985"`
[INFO] [stderr] warning: library `vectorize_struct` should only specify `proc-macro = true` instead of setting `crate-type`
[INFO] [stderr]    Compiling vectorize_struct v0.1.3 (/opt/crater/workdir)
[INFO] [stderr] error[E0554]: #![feature] may not be used on the stable release channel
[INFO] [stderr]  --> tests/test.rs:1:1
[INFO] [stderr]   |
[INFO] [stderr] 1 | #![feature(specialization)]
[INFO] [stderr]   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]  --> tests/test.rs:8:20
[INFO] [stderr]   |
[INFO] [stderr] 8 | #[vectorize_struct(std::fmt::Display, Debug)]
[INFO] [stderr]   |                    ^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn std::fmt::Display`
[INFO] [stderr]   |
[INFO] [stderr]   = note: #[warn(bare_trait_objects)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]  --> tests/test.rs:8:20
[INFO] [stderr]   |
[INFO] [stderr] 8 | #[vectorize_struct(std::fmt::Display, Debug)]
[INFO] [stderr]   |                    ^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn std::fmt::Display`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]  --> tests/test.rs:8:39
[INFO] [stderr]   |
[INFO] [stderr] 8 | #[vectorize_struct(std::fmt::Display, Debug)]
[INFO] [stderr]   |                                       ^^^^^ help: use `dyn`: `dyn Debug`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> tests/test.rs:35:64
[INFO] [stderr]    |
[INFO] [stderr] 35 |     for (name, field) in s.vectorize() as Vec<(Fields, Option<&Display>)> {
[INFO] [stderr]    |                                                                ^^^^^^^ help: use `dyn`: `dyn Display`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> tests/test.rs:41:64
[INFO] [stderr]    |
[INFO] [stderr] 41 |     for (name, field) in s.vectorize() as Vec<(Fields, Option<&Debug>)> {
[INFO] [stderr]    |                                                                ^^^^^ help: use `dyn`: `dyn Debug`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> tests/test.rs:48:20
[INFO] [stderr]    |
[INFO] [stderr] 48 | #[vectorize_struct(std::fmt::Display)]
[INFO] [stderr]    |                    ^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn std::fmt::Display`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> tests/test.rs:63:65
[INFO] [stderr]    |
[INFO] [stderr] 63 |     for (name, field) in es.vectorize() as Vec<(Fields, Option<&Display>)> {
[INFO] [stderr]    |                                                                 ^^^^^^^ help: use `dyn`: `dyn Display`
[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 `vectorize_struct`.
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stderr] error: build failed
[INFO] running `"docker" "inspect" "541dd56ae362f3674bc00863988c721ddbaccc4ef3cd5823c5ec23d76cc1b985"`
[INFO] running `"docker" "rm" "-f" "541dd56ae362f3674bc00863988c721ddbaccc4ef3cd5823c5ec23d76cc1b985"`
[INFO] [stdout] 541dd56ae362f3674bc00863988c721ddbaccc4ef3cd5823c5ec23d76cc1b985