[INFO] updating cached repository FTP-rs/ftp-server-iold-rs [INFO] running `"git" "fetch" "--all"` [INFO] [stdout] Fetching origin [INFO] [stderr] From git://github.com/FTP-rs/ftp-server-iold-rs [INFO] [stderr] * branch HEAD -> FETCH_HEAD [INFO] running `"git" "clone" "work/cache/sources/gh/FTP-rs/ftp-server-iold-rs" "work/ex/beta-1.38-1/sources/1.37.0/gh/FTP-rs/ftp-server-iold-rs"` [INFO] [stderr] Cloning into 'work/ex/beta-1.38-1/sources/1.37.0/gh/FTP-rs/ftp-server-iold-rs'... [INFO] [stderr] done. [INFO] running `"git" "clone" "work/cache/sources/gh/FTP-rs/ftp-server-iold-rs" "work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/FTP-rs/ftp-server-iold-rs"` [INFO] [stderr] Cloning into 'work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/FTP-rs/ftp-server-iold-rs'... [INFO] [stderr] done. [INFO] running `"git" "rev-parse" "HEAD"` [INFO] [stdout] 37558eaf69d09d65141d3cf8649eba78ccc95b51 [INFO] sha for GitHub repo FTP-rs/ftp-server-iold-rs: 37558eaf69d09d65141d3cf8649eba78ccc95b51 [INFO] validating manifest of FTP-rs/ftp-server-iold-rs 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 FTP-rs/ftp-server-iold-rs 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 FTP-rs/ftp-server-iold-rs [INFO] finished frobbing FTP-rs/ftp-server-iold-rs [INFO] frobbed toml for FTP-rs/ftp-server-iold-rs written to work/ex/beta-1.38-1/sources/1.37.0/gh/FTP-rs/ftp-server-iold-rs/Cargo.toml [INFO] started frobbing FTP-rs/ftp-server-iold-rs [INFO] finished frobbing FTP-rs/ftp-server-iold-rs [INFO] frobbed toml for FTP-rs/ftp-server-iold-rs written to work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/FTP-rs/ftp-server-iold-rs/Cargo.toml [INFO] crate FTP-rs/ftp-server-iold-rs 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 FTP-rs/ftp-server-iold-rs 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/gh/FTP-rs/ftp-server-iold-rs:/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] c9b98aa93596644ae2525d9f90ce3744c3c7f4a8d853be33941ae78a36d2daa5 [INFO] running `"docker" "start" "-a" "c9b98aa93596644ae2525d9f90ce3744c3c7f4a8d853be33941ae78a36d2daa5"` [INFO] [stderr] Compiling iold v0.1.0 (https://github.com/antoyo/iold#47f28d46) [INFO] [stderr] Compiling serde_derive v1.0.27 [INFO] [stderr] error[E0554]: #![feature] may not be used on the stable release channel [INFO] [stderr] --> /opt/crater/cargo-home/git/checkouts/iold-7ce8c4fe751820af/47f28d4/src/lib.rs:28:1 [INFO] [stderr] | [INFO] [stderr] 28 | #![feature(generators, generator_trait)] [INFO] [stderr] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stderr] [INFO] [stderr] error[E0599]: no method named `resume` found for type `std::boxed::Box<(dyn std::ops::Generator + 'static)>` in the current scope [INFO] [stderr] --> /opt/crater/cargo-home/git/checkouts/iold-7ce8c4fe751820af/47f28d4/src/lib.rs:307:38 [INFO] [stderr] | [INFO] [stderr] 307 | match unsafe { generator.resume() } { [INFO] [stderr] | ^^^^^^ [INFO] [stderr] [INFO] [stderr] error[E0599]: no method named `resume` found for type `G` in the current scope [INFO] [stderr] --> /opt/crater/cargo-home/git/checkouts/iold-7ce8c4fe751820af/47f28d4/src/lib.rs:325:38 [INFO] [stderr] | [INFO] [stderr] 325 | match unsafe { generator.resume() } { [INFO] [stderr] | ^^^^^^ [INFO] [stderr] | [INFO] [stderr] = help: items from traits can only be used if the trait is implemented and in scope [INFO] [stderr] = note: the following trait defines an item `resume`, perhaps you need to implement it: [INFO] [stderr] candidate #1: `std::ops::Generator` [INFO] [stderr] [INFO] [stderr] error[E0599]: no method named `resume` found for type `std::boxed::Box>` in the current scope [INFO] [stderr] --> /opt/crater/cargo-home/git/checkouts/iold-7ce8c4fe751820af/47f28d4/src/lib.rs:335:49 [INFO] [stderr] | [INFO] [stderr] 335 | match unsafe { task.resume() } { [INFO] [stderr] | ^^^^^^ [INFO] [stderr] [INFO] [stderr] error: aborting due to 4 previous errors [INFO] [stderr] [INFO] [stderr] Some errors have detailed explanations: E0554, E0599. [INFO] [stderr] For more information about an error, try `rustc --explain E0554`. [INFO] [stderr] error: Could not compile `iold`. [INFO] [stderr] warning: build failed, waiting for other jobs to finish... [INFO] [stderr] error: build failed [INFO] running `"docker" "inspect" "c9b98aa93596644ae2525d9f90ce3744c3c7f4a8d853be33941ae78a36d2daa5"` [INFO] running `"docker" "rm" "-f" "c9b98aa93596644ae2525d9f90ce3744c3c7f4a8d853be33941ae78a36d2daa5"` [INFO] [stdout] c9b98aa93596644ae2525d9f90ce3744c3c7f4a8d853be33941ae78a36d2daa5