[INFO] updating cached repository pimeys/blocking_test
[INFO] running `"git" "fetch" "--all"`
[INFO] [stdout] Fetching origin
[INFO] [stderr] From git://github.com/pimeys/blocking_test
[INFO] [stderr]  * branch            HEAD       -> FETCH_HEAD
[INFO] running `"git" "clone" "work/cache/sources/gh/pimeys/blocking_test" "work/ex/beta-1.38-1/sources/1.37.0/gh/pimeys/blocking_test"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.38-1/sources/1.37.0/gh/pimeys/blocking_test'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/pimeys/blocking_test" "work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/pimeys/blocking_test"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/pimeys/blocking_test'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] c2dfc9abe1fc3e5cf0c9ea4f16686e1662229e14
[INFO] sha for GitHub repo pimeys/blocking_test: c2dfc9abe1fc3e5cf0c9ea4f16686e1662229e14
[INFO] validating manifest of pimeys/blocking_test 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 pimeys/blocking_test 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 pimeys/blocking_test
[INFO] finished frobbing pimeys/blocking_test
[INFO] frobbed toml for pimeys/blocking_test written to work/ex/beta-1.38-1/sources/1.37.0/gh/pimeys/blocking_test/Cargo.toml
[INFO] started frobbing pimeys/blocking_test
[INFO] finished frobbing pimeys/blocking_test
[INFO] frobbed toml for pimeys/blocking_test written to work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/pimeys/blocking_test/Cargo.toml
[INFO] crate pimeys/blocking_test 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 pimeys/blocking_test 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-7/1.37.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/1.37.0/gh/pimeys/blocking_test:/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] 30090e54a5956f530d98ede5d2baaea15047b45945461f331ccf5a13a6d1eb22
[INFO] running `"docker" "start" "-a" "30090e54a5956f530d98ede5d2baaea15047b45945461f331ccf5a13a6d1eb22"`
[INFO] [stderr]    Compiling syn v0.15.38
[INFO] [stderr]    Compiling ident_case v1.0.1
[INFO] [stderr]    Compiling serde v1.0.93
[INFO] [stderr]    Compiling futures-core-preview v0.3.0-alpha.16
[INFO] [stderr]    Compiling rent_to_own v0.1.0
[INFO] [stderr]    Compiling md5 v0.6.1
[INFO] [stderr]    Compiling proc-macro-hack-impl v0.4.1
[INFO] [stderr]    Compiling pest v1.0.6
[INFO] [stderr]    Compiling fallible-iterator v0.2.0
[INFO] [stderr]    Compiling libsqlite3-sys v0.14.0 (https://github.com/pimeys/rusqlite#bf0eea5d)
[INFO] [stderr]    Compiling tower-service v0.1.0
[INFO] [stderr]    Compiling want v0.2.0
[INFO] [stderr]    Compiling stringprep v0.1.2
[INFO] [stderr]    Compiling futures-channel-preview v0.3.0-alpha.16
[INFO] [stderr]    Compiling futures-io-preview v0.3.0-alpha.16
[INFO] [stderr]    Compiling hyper v0.12.31
[INFO] [stderr]    Compiling miniz-sys v0.1.12
[INFO] [stderr]    Compiling proc-macro-hack v0.4.1
[INFO] [stderr]    Compiling pest_derive v1.0.8
[INFO] [stderr]    Compiling num-integer v0.1.41
[INFO] [stderr]    Compiling checked v0.5.0
[INFO] [stderr]    Compiling atoi v0.2.3
[INFO] [stderr]    Compiling block-buffer v0.7.3
[INFO] [stderr]    Compiling digest v0.8.0
[INFO] [stderr]    Compiling flate2 v1.0.9
[INFO] [stderr]    Compiling tokio-io v0.1.12
[INFO] [stderr]    Compiling mio-uds v0.6.7
[INFO] [stderr]    Compiling tokio-threadpool v0.1.14
[INFO] [stderr]    Compiling futures-sink-preview v0.3.0-alpha.16
[INFO] [stderr]    Compiling native-tls v0.2.3
[INFO] [stderr]    Compiling sha2 v0.8.0
[INFO] [stderr]    Compiling hmac v0.7.0
[INFO] [stderr]    Compiling sha-1 v0.8.1
[INFO] [stderr]    Compiling chrono v0.4.7
[INFO] [stderr]    Compiling headers-core v0.1.1
[INFO] [stderr]    Compiling futures-util-preview v0.3.0-alpha.16
[INFO] [stderr]    Compiling tokio-codec v0.1.1
[INFO] [stderr]    Compiling h2 v0.1.24
[INFO] [stderr]    Compiling tokio-tls v0.2.1
[INFO] [stderr]    Compiling postgres-protocol v0.4.0
[INFO] [stderr]    Compiling tokio-reactor v0.1.9
[INFO] [stderr]    Compiling scheduled-thread-pool v0.2.1
[INFO] [stderr]    Compiling tokio-fs v0.1.6
[INFO] [stderr]    Compiling r2d2 v0.8.5
[INFO] [stderr]    Compiling tokio-udp v0.1.3
[INFO] [stderr]    Compiling tokio-uds v0.2.5
[INFO] [stderr]    Compiling tokio-tcp v0.1.3
[INFO] [stderr]    Compiling futures-executor-preview v0.3.0-alpha.16
[INFO] [stderr]    Compiling tokio v0.1.21
[INFO] [stderr]    Compiling futures-preview v0.3.0-alpha.16
[INFO] [stderr]    Compiling serde_json v1.0.39
[INFO] [stderr]    Compiling serde_plain v0.3.0
[INFO] [stderr]    Compiling serde_urlencoded v0.5.5
[INFO] [stderr]    Compiling darling_core v0.8.6
[INFO] [stderr]    Compiling headers-derive v0.1.0
[INFO] [stderr]    Compiling serde_derive v1.0.93
[INFO] [stderr]    Compiling tower-web-macros v0.3.5
[INFO] [stderr]    Compiling handlebars v1.0.5
[INFO] [stderr]    Compiling headers v0.2.1
[INFO] [stderr]    Compiling darling_macro v0.8.6
[INFO] [stderr]    Compiling darling v0.8.6
[INFO] [stderr]    Compiling derive_state_machine_future v0.2.0
[INFO] [stderr]    Compiling rusqlite v0.18.0 (https://github.com/pimeys/rusqlite#bf0eea5d)
[INFO] [stderr]    Compiling r2d2_sqlite v0.10.0 (https://github.com/pimeys/r2d2-sqlite#0f88b0ec)
[INFO] [stderr]    Compiling tower-web v0.3.7
[INFO] [stderr]    Compiling state_machine_future v0.2.0
[INFO] [stderr]    Compiling tokio-postgres v0.4.0-rc.2
[INFO] [stderr]    Compiling postgres v0.16.0-rc.1
[INFO] [stderr]    Compiling tokio-postgres-native-tls v0.1.0-rc.1
[INFO] [stderr]    Compiling r2d2_postgres v0.15.0-rc.1
[INFO] [stderr]    Compiling blocking-test v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] error[E0554]: #![feature] may not be used on the stable release channel
[INFO] [stderr]  --> src/main.rs:1:1
[INFO] [stderr]   |
[INFO] [stderr] 1 | #![feature(async_await, await_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 `blocking-test`.
[INFO] [stderr] 
[INFO] [stderr] To learn more, run the command again with --verbose.
[INFO] running `"docker" "inspect" "30090e54a5956f530d98ede5d2baaea15047b45945461f331ccf5a13a6d1eb22"`
[INFO] running `"docker" "rm" "-f" "30090e54a5956f530d98ede5d2baaea15047b45945461f331ccf5a13a6d1eb22"`
[INFO] [stdout] 30090e54a5956f530d98ede5d2baaea15047b45945461f331ccf5a13a6d1eb22