[INFO] cloning repository https://github.com/tweirtx/rustcorder
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/tweirtx/rustcorder" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Ftweirtx%2Frustcorder", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Ftweirtx%2Frustcorder'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 072ab7d050d9acd2ca7d3544a94d6d4d5a1046ee
[INFO] testing tweirtx/rustcorder against try#ecabaf78506b7a4668d42dc20268c086b93f0fad for pr-87041
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Ftweirtx%2Frustcorder" "/workspace/builds/worker-6/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-6/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/tweirtx/rustcorder on toolchain ecabaf78506b7a4668d42dc20268c086b93f0fad
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+ecabaf78506b7a4668d42dc20268c086b93f0fad" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/tweirtx/rustcorder
[INFO] finished tweaking git repo https://github.com/tweirtx/rustcorder
[INFO] tweaked toml for git repo https://github.com/tweirtx/rustcorder written to /workspace/builds/worker-6/source/Cargo.toml
[INFO] crate git repo https://github.com/tweirtx/rustcorder already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+ecabaf78506b7a4668d42dc20268c086b93f0fad" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating git repository `https://github.com/Lakelezz/serenity/`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded serde_derive v1.0.110
[INFO] [stderr]   Downloaded pretty_env_logger v0.4.0
[INFO] [stderr]   Downloaded rustls v0.17.0
[INFO] [stderr]   Downloaded async-tls v0.6.0
[INFO] [stderr]   Downloaded hyper-rustls v0.20.0
[INFO] [stderr]   Downloaded tar v0.4.26
[INFO] [stderr]   Downloaded webpki-roots v0.17.0
[INFO] [stderr]   Downloaded async-trait v0.1.35
[INFO] [stderr]   Downloaded base64 v0.12.1
[INFO] [stderr]   Downloaded xattr v0.2.2
[INFO] [stderr]   Downloaded rustls v0.16.0
[INFO] [stderr]   Downloaded reqwest v0.10.6
[INFO] [stderr]   Downloaded hyper v0.13.6
[INFO] [stderr]   Downloaded syn v1.0.22
[INFO] [stderr]   Downloaded opus v0.2.1
[INFO] [stderr]   Downloaded async-tungstenite v0.4.2
[INFO] [stderr]   Downloaded proc-macro2 v1.0.13
[INFO] [stderr]   Downloaded filetime v0.2.10
[INFO] [stderr]   Downloaded cc v1.0.53
[INFO] [stderr]   Downloaded rle-decode-fast v1.0.1
[INFO] [stderr]   Downloaded audiopus v0.2.0
[INFO] [stderr]   Downloaded sodiumoxide v0.2.5
[INFO] [stderr]   Downloaded tokio-rustls v0.13.1
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[INFO] [stderr]   Downloaded webpki v0.21.3
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[INFO] [stderr]   Downloaded opus-sys v0.2.1
[INFO] [stderr]   Downloaded audiopus_sys v0.1.7
[INFO] [stderr]   Downloaded libsodium-sys v0.2.5
[INFO] [stderr]   Downloaded ring v0.16.14
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/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@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+ecabaf78506b7a4668d42dc20268c086b93f0fad" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 632f8d1f7cff796714e54f16aec9c9b1de94e0307e67730503128f09c2c38ca6
[INFO] running `Command { std: "docker" "start" "-a" "632f8d1f7cff796714e54f16aec9c9b1de94e0307e67730503128f09c2c38ca6", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "632f8d1f7cff796714e54f16aec9c9b1de94e0307e67730503128f09c2c38ca6", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "632f8d1f7cff796714e54f16aec9c9b1de94e0307e67730503128f09c2c38ca6", kill_on_drop: false }`
[INFO] [stdout] 632f8d1f7cff796714e54f16aec9c9b1de94e0307e67730503128f09c2c38ca6
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/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" "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@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+ecabaf78506b7a4668d42dc20268c086b93f0fad" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 8fae6c484bb9553a74fc263b5ca837e3d1b00cf5eda185efb3d7c0ed41b7e80b
[INFO] running `Command { std: "docker" "start" "-a" "8fae6c484bb9553a74fc263b5ca837e3d1b00cf5eda185efb3d7c0ed41b7e80b", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]    Compiling libc v0.2.70
[INFO] [stderr]    Compiling cfg-if v0.1.10
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[INFO] [stderr]    Compiling serde v1.0.110
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[INFO] [stderr]    Compiling take_mut v0.2.2
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[INFO] [stderr]    Compiling tower-service v0.3.0
[INFO] [stderr]    Compiling encoding_rs v0.8.23
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[INFO] [stderr]    Compiling rand v0.7.3
[INFO] [stderr]    Compiling http-body v0.3.1
[INFO] [stderr]    Compiling tungstenite v0.10.1
[INFO] [stderr]    Compiling mio-uds v0.6.8
[INFO] [stderr]    Compiling libsodium-sys v0.2.5
[INFO] [stderr]    Compiling env_logger v0.7.1
[INFO] [stderr]    Compiling pretty_env_logger v0.4.0
[INFO] [stderr]    Compiling webpki v0.21.3
[INFO] [stderr]    Compiling sct v0.6.0
[INFO] [stderr]    Compiling rustls v0.17.0
[INFO] [stderr]    Compiling webpki-roots v0.17.0
[INFO] [stderr]    Compiling rustls v0.16.0
[INFO] [stderr]    Compiling webpki-roots v0.19.0
[INFO] [stderr]    Compiling pin-project-internal v0.4.17
[INFO] [stderr]    Compiling futures-macro v0.3.5
[INFO] [stderr]    Compiling tokio-macros v0.2.5
[INFO] [stderr]    Compiling serde_derive v1.0.110
[INFO] [stderr]    Compiling async-trait v0.1.35
[INFO] [stderr]    Compiling tokio v0.2.21
[INFO] [stderr]    Compiling pin-project v0.4.17
[INFO] [stderr]    Compiling futures-util v0.3.5
[INFO] [stderr]    Compiling tokio-util v0.3.1
[INFO] [stderr]    Compiling tokio-rustls v0.13.1
[INFO] [stderr]    Compiling h2 v0.2.5
[INFO] [stderr]    Compiling futures-executor v0.3.5
[INFO] [stderr]    Compiling futures v0.3.5
[INFO] [stderr]    Compiling async-tls v0.6.0
[INFO] [stderr]    Compiling async-tungstenite v0.4.2
[INFO] [stderr]    Compiling hyper v0.13.6
[INFO] [stderr]    Compiling serde_json v1.0.53
[INFO] [stderr]    Compiling serde_urlencoded v0.6.1
[INFO] [stderr]    Compiling chrono v0.4.11
[INFO] [stderr]    Compiling hyper-rustls v0.20.0
[INFO] [stderr]    Compiling reqwest v0.10.6
[INFO] [stderr]    Compiling sodiumoxide v0.2.5
[INFO] [stderr]    Compiling rustcorder v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] error[E0594]: cannot assign to `_self.receiver` which is behind a `&` reference
[INFO] [stdout]    --> src/main.rs:135:49
[INFO] [stdout]     |
[INFO] [stdout] 135 | ...                   self.receiver = Some(Mutex::new(rec1));
[INFO] [stdout]     |                       ^^^^^^^^^^^^^ `_self` is a `&` reference, so the data it refers to cannot be written
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to previous error
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0594`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `rustcorder`
[INFO] [stderr] 
[INFO] [stderr] To learn more, run the command again with --verbose.
[INFO] running `Command { std: "docker" "inspect" "8fae6c484bb9553a74fc263b5ca837e3d1b00cf5eda185efb3d7c0ed41b7e80b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "8fae6c484bb9553a74fc263b5ca837e3d1b00cf5eda185efb3d7c0ed41b7e80b", kill_on_drop: false }`
[INFO] [stdout] 8fae6c484bb9553a74fc263b5ca837e3d1b00cf5eda185efb3d7c0ed41b7e80b