[INFO] fetching crate osprey 0.4.4...
[INFO] testing osprey-0.4.4 against 1.49.0 for beta-1.50-1
[INFO] extracting crate osprey 0.4.4 into /workspace/builds/worker-9/source
[INFO] validating manifest of crates.io crate osprey 0.4.4 on toolchain 1.49.0
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.49.0" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking crates.io crate osprey 0.4.4
[INFO] finished tweaking crates.io crate osprey 0.4.4
[INFO] tweaked toml for crates.io crate osprey 0.4.4 written to /workspace/builds/worker-9/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.49.0" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.49.0" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/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" "rustops/crates-build-env@sha256:b8eeb62f26c39b23691079a6cb6de528d8e88b4d71a8f6b1d30f8ba7d9c16de9" "/opt/rustwide/cargo-home/bin/cargo" "+1.49.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 668af3e177efce5c875a572d0a5ad22d445734787b16ca02cb402ad17c3e736d
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "668af3e177efce5c875a572d0a5ad22d445734787b16ca02cb402ad17c3e736d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "668af3e177efce5c875a572d0a5ad22d445734787b16ca02cb402ad17c3e736d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "668af3e177efce5c875a572d0a5ad22d445734787b16ca02cb402ad17c3e736d", kill_on_drop: false }`
[INFO] [stdout] 668af3e177efce5c875a572d0a5ad22d445734787b16ca02cb402ad17c3e736d
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/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=warn" "-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" "rustops/crates-build-env@sha256:b8eeb62f26c39b23691079a6cb6de528d8e88b4d71a8f6b1d30f8ba7d9c16de9" "/opt/rustwide/cargo-home/bin/cargo" "+1.49.0" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 228985cf1e99f1afd13f15a448e565873e4fed382c4c8c60d5042de93af614de
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "228985cf1e99f1afd13f15a448e565873e4fed382c4c8c60d5042de93af614de", kill_on_drop: false }`
[INFO] [stderr]    Compiling collect-mac v0.1.0
[INFO] [stderr]    Compiling lalrpop-util v0.16.3
[INFO] [stderr]    Compiling gluon_vm v0.9.4
[INFO] [stderr]    Compiling union-find v0.3.2
[INFO] [stderr]    Compiling rpds v0.5.0
[INFO] [stderr]    Compiling frunk_core v0.2.4
[INFO] [stderr]    Compiling num-bigint v0.2.6
[INFO] [stderr]    Compiling pretty v0.5.2
[INFO] [stderr]    Compiling ascii-canvas v1.0.0
[INFO] [stderr]    Compiling ena v0.11.0
[INFO] [stderr]    Compiling scroll_derive v0.10.4
[INFO] [stderr]    Compiling phf_generator v0.7.24
[INFO] [stderr]    Compiling error-chain v0.12.4
[INFO] [stderr]    Compiling serde v1.0.118
[INFO] [stderr]    Compiling bindgen v0.51.1
[INFO] [stderr]    Compiling gluon_codegen v0.9.4
[INFO] [stderr]    Compiling codespan v0.1.3
[INFO] [stderr]    Compiling string_cache_codegen v0.4.4
[INFO] [stderr]    Compiling codespan-reporting v0.1.4
[INFO] [stderr]    Compiling string_cache v0.7.5
[INFO] [stderr]    Compiling gluon_base v0.9.4
[INFO] [stderr]    Compiling scroll v0.10.2
[INFO] [stderr]    Compiling goblin v0.2.3
[INFO] [stderr]    Compiling gluon_check v0.9.4
[INFO] [stderr]    Compiling gluon v0.9.4
[INFO] [stderr]    Compiling docopt v1.1.0
[INFO] [stderr]    Compiling serde_json v1.0.61
[INFO] [stderr]    Compiling lalrpop v0.16.3
[INFO] [stderr]    Compiling falcon_capstone v0.4.1
[INFO] [stdout] error[E0713]: borrow may still be in use when destructor runs
[INFO] [stdout]    --> /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/gluon_vm-0.9.4/src/stack.rs:502:9
[INFO] [stdout]     |
[INFO] [stdout] 493 | impl<'a: 'b, 'b, S> StackFrame<'b, S>
[INFO] [stdout]     |              -- lifetime `'b` defined here
[INFO] [stdout] ...
[INFO] [stdout] 502 |         self.stack
[INFO] [stdout]     |         ^^^^^^^^^^ returning this value requires that `*self.stack` is borrowed for `'b`
[INFO] [stdout] 503 |     }
[INFO] [stdout]     |     - here, drop of `self` needs exclusive access to `*self.stack`, because the type `stack::StackFrame<'_, S>` implements the `Drop` trait
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0713]: borrow may still be in use when destructor runs
[INFO] [stdout]    --> /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/gluon_vm-0.9.4/src/stack.rs:584:28
[INFO] [stdout]     |
[INFO] [stdout] 493 | impl<'a: 'b, 'b, S> StackFrame<'b, S>
[INFO] [stdout]     |              -- lifetime `'b` defined here
[INFO] [stdout] ...
[INFO] [stdout] 584 |                 return Err(self.stack);
[INFO] [stdout]     |                        ----^^^^^^^^^^- returning this value requires that `*self.stack` is borrowed for `'b`
[INFO] [stdout] ...
[INFO] [stdout] 608 |     }
[INFO] [stdout]     |     - here, drop of `self` needs exclusive access to `*self.stack`, because the type `stack::StackFrame<'_, S>` implements the `Drop` trait
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0502]: cannot borrow `*self.thread` as immutable because it is also borrowed as mutable
[INFO] [stdout]     --> /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/gluon_vm-0.9.4/src/thread.rs:1398:19
[INFO] [stdout]      |
[INFO] [stdout] 1397 |         } = **self;
[INFO] [stdout]      |              ----- mutable borrow occurs here
[INFO] [stdout] 1398 |         alloc(gc, self.thread, &stack, data)
[INFO] [stdout]      |                   ^^^^^^^^^^^  ------ mutable borrow later used here
[INFO] [stdout]      |                   |
[INFO] [stdout]      |                   immutable borrow occurs here
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0502]: cannot borrow `*self.thread` as immutable because it is also borrowed as mutable
[INFO] [stdout]     --> /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/gluon_vm-0.9.4/src/thread.rs:1717:21
[INFO] [stdout]      |
[INFO] [stdout] 1714 |       fn borrow_mut(&mut self) -> ExecuteContext<State> {
[INFO] [stdout]      |                     - let's call the lifetime of this reference `'1`
[INFO] [stdout] 1715 |           let context = &mut **self;
[INFO] [stdout]      |                               ----- mutable borrow occurs here
[INFO] [stdout] 1716 | /         ExecuteContext {
[INFO] [stdout] 1717 | |             thread: self.thread,
[INFO] [stdout]      | |                     ^^^^^^^^^^^ immutable borrow occurs here
[INFO] [stdout] 1718 | |             gc: &mut context.gc,
[INFO] [stdout] 1719 | |             stack: StackFrame::current(&mut context.stack),
[INFO] [stdout] 1720 | |             hook: &mut context.hook,
[INFO] [stdout] 1721 | |         }
[INFO] [stdout]      | |_________- returning this value requires that `*self` is borrowed for `'1`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 4 previous errors
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] Some errors have detailed explanations: E0502, E0713.
[INFO] [stdout] 
[INFO] [stdout] For more information about an error, try `rustc --explain E0502`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `gluon_vm`
[INFO] [stderr] 
[INFO] [stderr] To learn more, run the command again with --verbose.
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stderr] error: build failed
[INFO] running `Command { std: "docker" "inspect" "228985cf1e99f1afd13f15a448e565873e4fed382c4c8c60d5042de93af614de", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "228985cf1e99f1afd13f15a448e565873e4fed382c4c8c60d5042de93af614de", kill_on_drop: false }`
[INFO] [stdout] 228985cf1e99f1afd13f15a448e565873e4fed382c4c8c60d5042de93af614de