[INFO] updating cached repository alex/ct-tools
[INFO] running `"git" "fetch" "--all"`
[INFO] [stdout] Fetching origin
[INFO] [stderr] From git://github.com/alex/ct-tools
[INFO] [stderr]  * branch            HEAD       -> FETCH_HEAD
[INFO] running `"git" "clone" "work/cache/sources/gh/alex/ct-tools" "work/ex/clippy-test-run/sources/stable/gh/alex/ct-tools"`
[INFO] [stderr] Cloning into 'work/ex/clippy-test-run/sources/stable/gh/alex/ct-tools'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/alex/ct-tools" "work/ex/clippy-test-run/sources/stable+rustflags=-Dclippy%3A%3Ainto_iter_on_array/gh/alex/ct-tools"`
[INFO] [stderr] Cloning into 'work/ex/clippy-test-run/sources/stable+rustflags=-Dclippy%3A%3Ainto_iter_on_array/gh/alex/ct-tools'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] 620141f81fbf81882f9b70734a2b099f52cf6a0a
[INFO] sha for GitHub repo alex/ct-tools: 620141f81fbf81882f9b70734a2b099f52cf6a0a
[INFO] validating manifest of alex/ct-tools on toolchain stable
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+stable" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] validating manifest of alex/ct-tools on toolchain stable+rustflags=-Dclippy::into_iter_on_array
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+stable" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started frobbing alex/ct-tools
[INFO] finished frobbing alex/ct-tools
[INFO] frobbed toml for alex/ct-tools written to work/ex/clippy-test-run/sources/stable/gh/alex/ct-tools/Cargo.toml
[INFO] started frobbing alex/ct-tools
[INFO] finished frobbing alex/ct-tools
[INFO] frobbed toml for alex/ct-tools written to work/ex/clippy-test-run/sources/stable+rustflags=-Dclippy%3A%3Ainto_iter_on_array/gh/alex/ct-tools/Cargo.toml
[INFO] crate alex/ct-tools has a lockfile. skipping
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+stable" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+stable" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] linting alex/ct-tools against stable for clippy-test-run
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/clippy-test-run/worker-6/stable:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/clippy-test-run/sources/stable/gh/alex/ct-tools:/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=forbid" "-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" "+stable" "clippy" "--frozen" "--all" "--all-targets"`
[INFO] [stdout] b4c3823cad9b18903ff2ad9eb92fba969c823bdf28b8b75ada07b0e7aed460b9
[INFO] running `"docker" "start" "-a" "b4c3823cad9b18903ff2ad9eb92fba969c823bdf28b8b75ada07b0e7aed460b9"`
[INFO] [stderr]     Checking futures-await-await-macro v0.1.1
[INFO] [stderr]    Compiling ring v0.13.5
[INFO] [stderr]    Compiling openssl v0.9.24
[INFO] [stderr]     Checking hyper v0.10.15
[INFO] [stderr]     Checking csv-core v0.1.5
[INFO] [stderr]    Compiling syn v0.14.9
[INFO] [stderr]    Compiling syn v0.15.23
[INFO] [stderr]     Checking error-chain v0.12.0
[INFO] [stderr]     Checking tokio-threadpool v0.1.9
[INFO] [stderr]     Checking tokio-signal v0.2.7
[INFO] [stderr]     Checking csv v1.0.5
[INFO] [stderr]     Checking pem v0.5.1
[INFO] [stderr]     Checking tokio-process v0.2.3
[INFO] [stderr]     Checking tokio-fs v0.1.4
[INFO] [stderr]     Checking prettytable-rs v0.8.0
[INFO] [stderr]     Checking native-tls v0.1.5
[INFO] [stderr]     Checking tokio v0.1.13
[INFO] [stderr]     Checking hyper-native-tls v0.2.4
[INFO] [stderr]     Checking hyper v0.12.18
[INFO] [stderr]     Checking tokio-core v0.1.17
[INFO] [stderr]    Compiling serde_derive v1.0.82
[INFO] [stderr]    Compiling structopt-derive v0.2.14
[INFO] [stderr]     Checking reqwest v0.6.2
[INFO] [stderr]     Checking webpki v0.18.1
[INFO] [stderr]     Checking sct v0.4.0
[INFO] [stderr]    Compiling pest_generator v2.0.0
[INFO] [stderr]    Compiling futures-await-async-macro v0.1.4
[INFO] [stderr]     Checking structopt v0.2.14
[INFO] [stderr]     Checking ct-logs v0.4.0
[INFO] [stderr]     Checking rustls v0.14.0
[INFO] [stderr] error[E0554]: #![feature] may not be used on the stable release channel
[INFO] [stderr]   --> /opt/crater/cargo-home/registry/src/github.com-1ecc6299db9ec823/futures-await-async-macro-0.1.4/src/lib.rs:12:1
[INFO] [stderr]    |
[INFO] [stderr] 12 | #![feature(proc_macro)]
[INFO] [stderr]    | ^^^^^^^^^^^^^^^^^^^^^^^
[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 `futures-await-async-macro`.
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stderr] error: build failed
[INFO] running `"docker" "inspect" "b4c3823cad9b18903ff2ad9eb92fba969c823bdf28b8b75ada07b0e7aed460b9"`
[INFO] running `"docker" "rm" "-f" "b4c3823cad9b18903ff2ad9eb92fba969c823bdf28b8b75ada07b0e7aed460b9"`
[INFO] [stdout] b4c3823cad9b18903ff2ad9eb92fba969c823bdf28b8b75ada07b0e7aed460b9