[INFO] cloning repository urugang/create-lang-with-rust [INFO] running `"git" "clone" "--bare" "git://github.com/urugang/create-lang-with-rust.git" "work/cache/sources/gh/urugang/create-lang-with-rust"` [INFO] [stderr] Cloning into bare repository 'work/cache/sources/gh/urugang/create-lang-with-rust'... [INFO] running `"git" "clone" "work/cache/sources/gh/urugang/create-lang-with-rust" "work/ex/pr-62008/sources/master#848e0a23f34aaab3e4a974b031c86ef2a4e4fcc1/gh/urugang/create-lang-with-rust"` [INFO] [stderr] Cloning into 'work/ex/pr-62008/sources/master#848e0a23f34aaab3e4a974b031c86ef2a4e4fcc1/gh/urugang/create-lang-with-rust'... [INFO] [stderr] done. [INFO] running `"git" "clone" "work/cache/sources/gh/urugang/create-lang-with-rust" "work/ex/pr-62008/sources/try#8f81d0bf6baf07b92f1246696722485c4ca0b049/gh/urugang/create-lang-with-rust"` [INFO] [stderr] Cloning into 'work/ex/pr-62008/sources/try#8f81d0bf6baf07b92f1246696722485c4ca0b049/gh/urugang/create-lang-with-rust'... [INFO] [stderr] done. [INFO] running `"git" "rev-parse" "HEAD"` [INFO] [stdout] 1443b2f41183f242324d59b1e2a8827acf6bbfdd [INFO] sha for GitHub repo urugang/create-lang-with-rust: 1443b2f41183f242324d59b1e2a8827acf6bbfdd [INFO] validating manifest of urugang/create-lang-with-rust on toolchain master#848e0a23f34aaab3e4a974b031c86ef2a4e4fcc1 [INFO] running `"/mnt/big/ec2-user/crater/work/local/cargo-home/bin/cargo" "+848e0a23f34aaab3e4a974b031c86ef2a4e4fcc1-alt" "read-manifest" "--manifest-path" "Cargo.toml"` [INFO] validating manifest of urugang/create-lang-with-rust on toolchain try#8f81d0bf6baf07b92f1246696722485c4ca0b049 [INFO] running `"/mnt/big/ec2-user/crater/work/local/cargo-home/bin/cargo" "+8f81d0bf6baf07b92f1246696722485c4ca0b049-alt" "read-manifest" "--manifest-path" "Cargo.toml"` [INFO] started frobbing urugang/create-lang-with-rust [INFO] finished frobbing urugang/create-lang-with-rust [INFO] frobbed toml for urugang/create-lang-with-rust written to work/ex/pr-62008/sources/master#848e0a23f34aaab3e4a974b031c86ef2a4e4fcc1/gh/urugang/create-lang-with-rust/Cargo.toml [INFO] started frobbing urugang/create-lang-with-rust [INFO] finished frobbing urugang/create-lang-with-rust [INFO] frobbed toml for urugang/create-lang-with-rust written to work/ex/pr-62008/sources/try#8f81d0bf6baf07b92f1246696722485c4ca0b049/gh/urugang/create-lang-with-rust/Cargo.toml [INFO] crate urugang/create-lang-with-rust already has a lockfile, it will not be regenerated [INFO] running `"/mnt/big/ec2-user/crater/work/local/cargo-home/bin/cargo" "+848e0a23f34aaab3e4a974b031c86ef2a4e4fcc1-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"` [INFO] [stderr] Downloading crates ... [INFO] [stderr] Downloaded test-case-derive v0.2.1 [INFO] running `"/mnt/big/ec2-user/crater/work/local/cargo-home/bin/cargo" "+8f81d0bf6baf07b92f1246696722485c4ca0b049-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"` [INFO] checking urugang/create-lang-with-rust against try#8f81d0bf6baf07b92f1246696722485c4ca0b049 for pr-62008 [INFO] running `"docker" "create" "-v" "/mnt/big/ec2-user/crater/work/local/target-dirs/pr-62008/worker-6/try#8f81d0bf6baf07b92f1246696722485c4ca0b049:/opt/crater/target:rw,Z" "-v" "/mnt/big/ec2-user/crater/work/ex/pr-62008/sources/try#8f81d0bf6baf07b92f1246696722485c4ca0b049/gh/urugang/create-lang-with-rust:/opt/crater/workdir:ro,Z" "-v" "/mnt/big/ec2-user/crater/work/local/cargo-home:/opt/crater/cargo-home:ro,Z" "-v" "/mnt/big/ec2-user/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" "+8f81d0bf6baf07b92f1246696722485c4ca0b049-alt" "check" "--frozen" "--all" "--all-targets"` [INFO] [stdout] 949c51e668498d08ea60e9d0735e221ecf4c9f031a1252a9580cc83b48175951 [INFO] running `"docker" "start" "-a" "949c51e668498d08ea60e9d0735e221ecf4c9f031a1252a9580cc83b48175951"` [INFO] [stderr] Compiling test-case-derive v0.2.1 [INFO] [stderr] Compiling pest_generator v2.1.0 [INFO] [stderr] Compiling pest_derive v2.1.0 [INFO] [stderr] Checking meetup-2019-02 v0.1.0 (/opt/crater/workdir) [INFO] [stderr] warning: cannot borrow `*self` as mutable because it is also borrowed as immutable [INFO] [stderr] --> src/codegen.rs:63:17 [INFO] [stderr] | [INFO] [stderr] 62 | let f = self.func.as_ref().unwrap(); [INFO] [stderr] | --------- immutable borrow occurs here [INFO] [stderr] 63 | self.emit(ByteOp::PushFunc(f.label)); [INFO] [stderr] | ^^^^ ------- immutable borrow later used here [INFO] [stderr] | | [INFO] [stderr] | mutable borrow occurs here [INFO] [stderr] | [INFO] [stderr] = note: #[warn(mutable_borrow_reservation_conflict)] on by default [INFO] [stderr] = warning: this borrowing pattern was not meant to be accepted, and may become a hard error in the future [INFO] [stderr] = note: for more information, see issue #59159 [INFO] [stderr] [INFO] [stderr] warning: cannot borrow `*self` as mutable because it is also borrowed as immutable [INFO] [stderr] --> src/codegen.rs:63:17 [INFO] [stderr] | [INFO] [stderr] 62 | let f = self.func.as_ref().unwrap(); [INFO] [stderr] | --------- immutable borrow occurs here [INFO] [stderr] 63 | self.emit(ByteOp::PushFunc(f.label)); [INFO] [stderr] | ^^^^ ------- immutable borrow later used here [INFO] [stderr] | | [INFO] [stderr] | mutable borrow occurs here [INFO] [stderr] | [INFO] [stderr] = note: #[warn(mutable_borrow_reservation_conflict)] on by default [INFO] [stderr] = warning: this borrowing pattern was not meant to be accepted, and may become a hard error in the future [INFO] [stderr] = note: for more information, see issue #59159 [INFO] [stderr] [INFO] [stderr] Finished dev [unoptimized + debuginfo] target(s) in 9.31s [INFO] running `"docker" "inspect" "949c51e668498d08ea60e9d0735e221ecf4c9f031a1252a9580cc83b48175951"` [INFO] running `"docker" "rm" "-f" "949c51e668498d08ea60e9d0735e221ecf4c9f031a1252a9580cc83b48175951"` [INFO] [stdout] 949c51e668498d08ea60e9d0735e221ecf4c9f031a1252a9580cc83b48175951