[INFO] cloning repository https://github.com/cheme/tunnel
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/cheme/tunnel" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fcheme%2Ftunnel", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fcheme%2Ftunnel'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] c695e507295424520f56d62841574c321ccb8cea
[INFO] testing cheme/tunnel against beta-2021-09-08 for beta-1.56-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fcheme%2Ftunnel" "/workspace/builds/worker-101/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-101/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/cheme/tunnel on toolchain beta-2021-09-08
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2021-09-08" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/cheme/tunnel
[INFO] finished tweaking git repo https://github.com/cheme/tunnel
[INFO] tweaked toml for git repo https://github.com/cheme/tunnel written to /workspace/builds/worker-101/source/Cargo.toml
[INFO] crate git repo https://github.com/cheme/tunnel already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2021-09-08" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Updating git repository `https://github.com/cheme/readwrite-comp.git`
[INFO] [stderr]     Updating git repository `https://github.com/cheme/mydht.git`
[INFO] [stderr]     Updating git repository `https://github.com/cheme/bit-vec.git`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded num-traits v0.2.2
[INFO] [stderr]   Downloaded stable_deref_trait v1.0.0
[INFO] [stderr]   Downloaded futures v0.1.18
[INFO] [stderr]   Downloaded bincode v0.8.0
[INFO] [stderr]   Downloaded uuid v0.6.1
[INFO] [stderr]   Downloaded serde_json v1.0.12
[INFO] [stderr]   Downloaded serde v1.0.33
[INFO] [stderr]   Downloaded serde_derive v1.0.33
[INFO] [stderr]   Downloaded serde_derive_internals v0.21.0
[INFO] [stderr]   Downloaded syn v0.12.14
[INFO] [stderr]   Downloaded itoa v0.4.0
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-101/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-101/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:a89201d6b5b9fd45c15d5952ece0a0129e7e80cb26ec023fd59cf09bc26f1604" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2021-09-08" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 037de47c0b8555aa5f3f85514a59536f2cdf879cfe741c03278b49e2f99e4316
[INFO] running `Command { std: "docker" "start" "-a" "037de47c0b8555aa5f3f85514a59536f2cdf879cfe741c03278b49e2f99e4316", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "037de47c0b8555aa5f3f85514a59536f2cdf879cfe741c03278b49e2f99e4316", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "037de47c0b8555aa5f3f85514a59536f2cdf879cfe741c03278b49e2f99e4316", kill_on_drop: false }`
[INFO] [stdout] 037de47c0b8555aa5f3f85514a59536f2cdf879cfe741c03278b49e2f99e4316
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-101/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-101/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" "ghcr.io/rust-lang/crates-build-env/linux@sha256:a89201d6b5b9fd45c15d5952ece0a0129e7e80cb26ec023fd59cf09bc26f1604" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2021-09-08" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 80b21575601e293ad4cdf8068236e20239968dd7bf69486bada6ecef948823da
[INFO] running `Command { std: "docker" "start" "-a" "80b21575601e293ad4cdf8068236e20239968dd7bf69486bada6ecef948823da", kill_on_drop: false }`
[INFO] [stderr]    Compiling num-traits v0.2.2
[INFO] [stderr]    Compiling libc v0.2.39
[INFO] [stderr]    Compiling serde v1.0.33
[INFO] [stderr]    Compiling readwrite-comp v0.0.1 (https://github.com/cheme/readwrite-comp.git#a7dd09c9)
[INFO] [stderr]    Compiling proc-macro2 v0.2.3
[INFO] [stderr]    Compiling log v0.4.1
[INFO] [stdout] error[E0713]: borrow may still be in use when destructor runs
[INFO] [stdout]    --> /opt/rustwide/cargo-home/git/checkouts/readwrite-comp-98a72d5ffd3148ea/a7dd09c/readwrite-comp/src/lib.rs:369:9
[INFO] [stdout]     |
[INFO] [stdout] 353 | impl<'a, 'b, W : 'a + Write, EW : 'b + ExtWrite> CompW<'a,'b,W,EW> {
[INFO] [stdout]     |          -- lifetime `'b` defined here
[INFO] [stdout] ...
[INFO] [stdout] 369 |     Ok((self.1,self.2.clone()))
[INFO] [stdout]     |     ----^^^^^^----------------- returning this value requires that `*self.1` is borrowed for `'b`
[INFO] [stdout] 370 |   }
[INFO] [stdout]     |   - here, drop of `self` needs exclusive access to `*self.1`, because the type `CompW<'_, '_, W, EW>` 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/git/checkouts/readwrite-comp-98a72d5ffd3148ea/a7dd09c/readwrite-comp/src/lib.rs:436:9
[INFO] [stdout]     |
[INFO] [stdout] 422 | impl<'a, 'b, R : 'a + Read, ER : 'b + ExtRead> CompR<'a,'b,R,ER> {
[INFO] [stdout]     |          -- lifetime `'b` defined here
[INFO] [stdout] ...
[INFO] [stdout] 436 |     Ok((self.1,self.2.clone()))
[INFO] [stdout]     |     ----^^^^^^----------------- returning this value requires that `*self.1` is borrowed for `'b`
[INFO] [stdout] 437 |   }
[INFO] [stdout]     |   - here, drop of `self` needs exclusive access to `*self.1`, because the type `CompR<'_, '_, R, ER>` implements the `Drop` trait
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 2 previous errors
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0713`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `readwrite-comp` due to 3 previous errors
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stderr] error: build failed
[INFO] running `Command { std: "docker" "inspect" "80b21575601e293ad4cdf8068236e20239968dd7bf69486bada6ecef948823da", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "80b21575601e293ad4cdf8068236e20239968dd7bf69486bada6ecef948823da", kill_on_drop: false }`
[INFO] [stdout] 80b21575601e293ad4cdf8068236e20239968dd7bf69486bada6ecef948823da