[INFO] crate mumble-protocol 0.2.0 is already in cache [INFO] extracting crate mumble-protocol 0.2.0 into work/ex/beta-1.38-1/sources/1.37.0/reg/mumble-protocol/0.2.0 [INFO] extracting crate mumble-protocol 0.2.0 into work/ex/beta-1.38-1/sources/beta-2019-08-13/reg/mumble-protocol/0.2.0 [INFO] validating manifest of mumble-protocol-0.2.0 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 mumble-protocol-0.2.0 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 mumble-protocol-0.2.0 [INFO] finished frobbing mumble-protocol-0.2.0 [INFO] frobbed toml for mumble-protocol-0.2.0 written to work/ex/beta-1.38-1/sources/1.37.0/reg/mumble-protocol/0.2.0/Cargo.toml [INFO] started frobbing mumble-protocol-0.2.0 [INFO] finished frobbing mumble-protocol-0.2.0 [INFO] frobbed toml for mumble-protocol-0.2.0 written to work/ex/beta-1.38-1/sources/beta-2019-08-13/reg/mumble-protocol/0.2.0/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 mumble-protocol-0.2.0 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-2/1.37.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/1.37.0/reg/mumble-protocol/0.2.0:/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] 0433de0084ab33db23ba1927a2a3f0ef143fcfd92a255952e4bad1fe4acb2852 [INFO] running `"docker" "start" "-a" "0433de0084ab33db23ba1927a2a3f0ef143fcfd92a255952e4bad1fe4acb2852"` [INFO] [stderr] Compiling mumble-protocol v0.2.0 (/opt/crater/workdir) [INFO] [stderr] warning: cannot borrow `*buf_mut` as mutable because it is also borrowed as immutable [INFO] [stderr] --> src/voice.rs:155:21 [INFO] [stderr] | [INFO] [stderr] 141 | let mut buf = (&*buf_mut).into_buf(); [INFO] [stderr] | ----------- immutable borrow occurs here [INFO] [stderr] ... [INFO] [stderr] 155 | buf_mut.advance(buf.position() as usize); [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 `*buf_mut` as mutable because it is also borrowed as immutable [INFO] [stderr] --> src/voice.rs:181:21 [INFO] [stderr] | [INFO] [stderr] 141 | let mut buf = (&*buf_mut).into_buf(); [INFO] [stderr] | ----------- immutable borrow occurs here [INFO] [stderr] ... [INFO] [stderr] 181 | buf_mut.advance(buf.position() as usize); [INFO] [stderr] | ^^^^^^^ --- immutable borrow later used here [INFO] [stderr] | | [INFO] [stderr] | mutable borrow occurs here [INFO] [stderr] | [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 9.34s [INFO] running `"docker" "inspect" "0433de0084ab33db23ba1927a2a3f0ef143fcfd92a255952e4bad1fe4acb2852"` [INFO] running `"docker" "rm" "-f" "0433de0084ab33db23ba1927a2a3f0ef143fcfd92a255952e4bad1fe4acb2852"` [INFO] [stdout] 0433de0084ab33db23ba1927a2a3f0ef143fcfd92a255952e4bad1fe4acb2852 [INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-2/1.37.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/1.37.0/reg/mumble-protocol/0.2.0:/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] bb0f13550de5eaccce47529ea6144906c448429174d155d755c0a82374e26b1e [INFO] running `"docker" "start" "-a" "bb0f13550de5eaccce47529ea6144906c448429174d155d755c0a82374e26b1e"` [INFO] [stderr] Compiling mumble-protocol v0.2.0 (/opt/crater/workdir) [INFO] [stderr] error[E0554]: #![feature] may not be used on the stable release channel [INFO] [stderr] --> examples/echo_client.rs:1:1 [INFO] [stderr] | [INFO] [stderr] 1 | #![feature(try_from)] [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 `mumble-protocol`. [INFO] [stderr] warning: build failed, waiting for other jobs to finish... [INFO] [stderr] warning: cannot borrow `*buf_mut` as mutable because it is also borrowed as immutable [INFO] [stderr] --> src/voice.rs:155:21 [INFO] [stderr] | [INFO] [stderr] 141 | let mut buf = (&*buf_mut).into_buf(); [INFO] [stderr] | ----------- immutable borrow occurs here [INFO] [stderr] ... [INFO] [stderr] 155 | buf_mut.advance(buf.position() as usize); [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 `*buf_mut` as mutable because it is also borrowed as immutable [INFO] [stderr] --> src/voice.rs:181:21 [INFO] [stderr] | [INFO] [stderr] 141 | let mut buf = (&*buf_mut).into_buf(); [INFO] [stderr] | ----------- immutable borrow occurs here [INFO] [stderr] ... [INFO] [stderr] 181 | buf_mut.advance(buf.position() as usize); [INFO] [stderr] | ^^^^^^^ --- immutable borrow later used here [INFO] [stderr] | | [INFO] [stderr] | mutable borrow occurs here [INFO] [stderr] | [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] error: build failed [INFO] running `"docker" "inspect" "bb0f13550de5eaccce47529ea6144906c448429174d155d755c0a82374e26b1e"` [INFO] running `"docker" "rm" "-f" "bb0f13550de5eaccce47529ea6144906c448429174d155d755c0a82374e26b1e"` [INFO] [stdout] bb0f13550de5eaccce47529ea6144906c448429174d155d755c0a82374e26b1e