[INFO] fetching crate cxx-stl 4.4.0...
[INFO] checking cxx-stl-4.4.0 against try#8e819ff5434466e9a823e03871a1775ac7d84ddf for pr-156027
[INFO] extracting crate cxx-stl 4.4.0 into /workspace/builds/worker-5-tc2/source
[INFO] started tweaking crates.io crate cxx-stl 4.4.0
[INFO] finished tweaking crates.io crate cxx-stl 4.4.0
[INFO] tweaked toml for crates.io crate cxx-stl 4.4.0 written to /workspace/builds/worker-5-tc2/source/Cargo.toml
[INFO] validating manifest of crates.io crate cxx-stl 4.4.0 on toolchain 8e819ff5434466e9a823e03871a1775ac7d84ddf
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+8e819ff5434466e9a823e03871a1775ac7d84ddf" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate crates.io crate cxx-stl 4.4.0 already has a lockfile, it will not be regenerated
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+8e819ff5434466e9a823e03871a1775ac7d84ddf" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc2/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+8e819ff5434466e9a823e03871a1775ac7d84ddf" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 9c0fdcd322394ced40be7323ea56c457e86070de5607ab4b0db4d5b022d97573
[INFO] running `Command { std: "docker" "start" "-a" "9c0fdcd322394ced40be7323ea56c457e86070de5607ab4b0db4d5b022d97573", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "9c0fdcd322394ced40be7323ea56c457e86070de5607ab4b0db4d5b022d97573", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "9c0fdcd322394ced40be7323ea56c457e86070de5607ab4b0db4d5b022d97573", kill_on_drop: false }`
[INFO] [stdout] 9c0fdcd322394ced40be7323ea56c457e86070de5607ab4b0db4d5b022d97573
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc2/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-e" "RUSTDOCFLAGS=--cap-lints=forbid" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+8e819ff5434466e9a823e03871a1775ac7d84ddf" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] e147ea4eddcfd633c9f1fb97f4aa9aa4af5f447f539620b7c78e059807b3142d
[INFO] running `Command { std: "docker" "start" "-a" "e147ea4eddcfd633c9f1fb97f4aa9aa4af5f447f539620b7c78e059807b3142d", kill_on_drop: false }`
[INFO] [stderr]    Compiling cc v1.2.21
[INFO] [stderr]    Compiling cstl-sys v2.4.0
[INFO] [stderr]     Checking cxx-stl v4.4.0 (/opt/rustwide/workdir)
[INFO] [stdout] error[E0502]: cannot borrow `*self` as mutable because it is also borrowed as immutable
[INFO] [stdout]   --> src/alloc.rs:64:11
[INFO] [stdout]    |
[INFO] [stdout] 62 |         let mut proxy_alloc = self.alloc_as_ref().proxy();
[INFO] [stdout]    |                               ---- immutable borrow occurs here
[INFO] [stdout] 63 |         let mut raw_alloc = RawAlloc::from_ref_mut(&mut proxy_alloc);
[INFO] [stdout] 64 |         f(self.value_as_mut(), &mut raw_alloc.base)
[INFO] [stdout]    |           ^^^^^^^^^^^^^^^^^^^ mutable borrow occurs here
[INFO] [stdout] 65 |     }
[INFO] [stdout]    |     - immutable borrow might be used here, when `proxy_alloc` is dropped and runs the destructor for type `impl GlobalAlloc + '_`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0502]: cannot borrow `*self` as mutable because it is also borrowed as immutable
[INFO] [stdout]   --> src/alloc.rs:64:11
[INFO] [stdout]    |
[INFO] [stdout] 62 |         let mut proxy_alloc = self.alloc_as_ref().proxy();
[INFO] [stdout]    |                               ---- immutable borrow occurs here
[INFO] [stdout] 63 |         let mut raw_alloc = RawAlloc::from_ref_mut(&mut proxy_alloc);
[INFO] [stdout] 64 |         f(self.value_as_mut(), &mut raw_alloc.base)
[INFO] [stdout]    |           ^^^^^^^^^^^^^^^^^^^ mutable borrow occurs here
[INFO] [stdout] 65 |     }
[INFO] [stdout]    |     - immutable borrow might be used here, when `proxy_alloc` is dropped and runs the destructor for type `impl GlobalAlloc + '_`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0502`.
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0502`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `cxx-stl` (lib) due to 1 previous error
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stderr] error: could not compile `cxx-stl` (lib test) due to 1 previous error
[INFO] running `Command { std: "docker" "inspect" "e147ea4eddcfd633c9f1fb97f4aa9aa4af5f447f539620b7c78e059807b3142d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "e147ea4eddcfd633c9f1fb97f4aa9aa4af5f447f539620b7c78e059807b3142d", kill_on_drop: false }`
[INFO] [stdout] e147ea4eddcfd633c9f1fb97f4aa9aa4af5f447f539620b7c78e059807b3142d
