[INFO] cloning repository https://github.com/Eldalar/Hex
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/Eldalar/Hex" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FEldalar%2FHex", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FEldalar%2FHex'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] dacd366a1c040a66a5e99fe40650393558f5132a
[INFO] testing Eldalar/Hex against 1.55.0 for beta-1.56-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FEldalar%2FHex" "/workspace/builds/worker-79/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-79/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/Eldalar/Hex on toolchain 1.55.0
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.55.0" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/Eldalar/Hex
[INFO] finished tweaking git repo https://github.com/Eldalar/Hex
[INFO] tweaked toml for git repo https://github.com/Eldalar/Hex written to /workspace/builds/worker-79/source/Cargo.toml
[INFO] crate git repo https://github.com/Eldalar/Hex already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.55.0" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-79/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-79/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" "+1.55.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 8a7cce5aa805e5baac5b54b53c4383b805b594dc4ffbe3b7c614fbaf27061e75
[INFO] running `Command { std: "docker" "start" "-a" "8a7cce5aa805e5baac5b54b53c4383b805b594dc4ffbe3b7c614fbaf27061e75", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "8a7cce5aa805e5baac5b54b53c4383b805b594dc4ffbe3b7c614fbaf27061e75", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "8a7cce5aa805e5baac5b54b53c4383b805b594dc4ffbe3b7c614fbaf27061e75", kill_on_drop: false }`
[INFO] [stdout] 8a7cce5aa805e5baac5b54b53c4383b805b594dc4ffbe3b7c614fbaf27061e75
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-79/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-79/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" "+1.55.0" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 30a560434a5e67197a591f32009969251427ede2d6c548bac94e9961744a667d
[INFO] running `Command { std: "docker" "start" "-a" "30a560434a5e67197a591f32009969251427ede2d6c548bac94e9961744a667d", kill_on_drop: false }`
[INFO] [stderr]    Compiling unicode-xid v0.0.4
[INFO] [stderr]    Compiling quote v0.3.15
[INFO] [stderr]    Compiling procedural-masquerade v0.1.2
[INFO] [stderr]    Compiling libloading v0.4.0
[INFO] [stderr]    Compiling libc v0.2.23
[INFO] [stderr]    Compiling lazy_static v0.2.8
[INFO] [stderr]    Compiling stable_deref_trait v1.0.0
[INFO] [stderr]    Compiling num-traits v0.1.37
[INFO] [stderr]    Compiling synom v0.11.3
[INFO] [stderr]    Compiling syn v0.11.11
[INFO] [stderr]    Compiling rand v0.3.15
[INFO] [stderr]    Compiling enum_primitive v0.1.1
[INFO] [stderr]    Compiling tempdir v0.3.5
[INFO] [stderr]    Compiling rental-impl v0.4.11
[INFO] [stderr]    Compiling rental v0.4.11
[INFO] [stderr]    Compiling al-sys v0.5.1
[INFO] [stderr]    Compiling alto v2.0.0 (https://github.com/Eldalar/alto#8e47a427)
[INFO] [stdout] error[E0308]: mismatched types
[INFO] [stdout]    --> /opt/rustwide/cargo-home/git/checkouts/alto-0cacbe2ee1ac4bb1/8e47a42/src/alc.rs:910:59
[INFO] [stdout]     |
[INFO] [stdout] 910 |     pub fn capture_samples<R: AsBufferDataMut<F>>(&mut self, &mut data: R) -> AltoResult<()> {
[INFO] [stdout]     |                            -                                 ^^^^^^^^^---
[INFO] [stdout]     |                            |                                 |          |
[INFO] [stdout]     |                            |                                 |          expected due to this
[INFO] [stdout]     |                            |                                 expected type parameter `R`, found `&mut _`
[INFO] [stdout]     |                            this type parameter               help: did you mean `data`: `&R`
[INFO] [stdout]     |
[INFO] [stdout]     = note: expected type parameter `R`
[INFO] [stdout]             found mutable reference `&mut _`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to previous error
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `alto` due to 2 previous errors
[INFO] [stdout] For more information about this error, try `rustc --explain E0308`.
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "30a560434a5e67197a591f32009969251427ede2d6c548bac94e9961744a667d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "30a560434a5e67197a591f32009969251427ede2d6c548bac94e9961744a667d", kill_on_drop: false }`
[INFO] [stdout] 30a560434a5e67197a591f32009969251427ede2d6c548bac94e9961744a667d