[INFO] cloning repository https://github.com/johnshiver/rustacean
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/johnshiver/rustacean" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fjohnshiver%2Frustacean", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fjohnshiver%2Frustacean'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] ecb4c43d16231e5849f1ed51c5eb29dec8bf83c4
[INFO] testing johnshiver/rustacean against beta-2022-04-10 for beta-1.61-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fjohnshiver%2Frustacean" "/workspace/builds/worker-98/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-98/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/johnshiver/rustacean on toolchain beta-2022-04-10
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2022-04-10" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/johnshiver/rustacean
[INFO] finished tweaking git repo https://github.com/johnshiver/rustacean
[INFO] tweaked toml for git repo https://github.com/johnshiver/rustacean written to /workspace/builds/worker-98/source/Cargo.toml
[INFO] crate git repo https://github.com/johnshiver/rustacean already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2022-04-10" "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-98/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-98/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:b0c94ce3c1162fcb8e57cac5b65ec2f72eabb1eebea4fcc35e269e823f681646" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2022-04-10" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 17f2155d7cb0f843931bb3a37adec9e91a022a31170debb201a7bb23fc517f13
[INFO] running `Command { std: "docker" "start" "-a" "17f2155d7cb0f843931bb3a37adec9e91a022a31170debb201a7bb23fc517f13", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "17f2155d7cb0f843931bb3a37adec9e91a022a31170debb201a7bb23fc517f13", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "17f2155d7cb0f843931bb3a37adec9e91a022a31170debb201a7bb23fc517f13", kill_on_drop: false }`
[INFO] [stdout] 17f2155d7cb0f843931bb3a37adec9e91a022a31170debb201a7bb23fc517f13
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-98/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-98/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:b0c94ce3c1162fcb8e57cac5b65ec2f72eabb1eebea4fcc35e269e823f681646" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2022-04-10" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 9e5aa3f2eb013742d918880711a63669e5be6d11c85e2c0d877a7ddd517bb78a
[INFO] running `Command { std: "docker" "start" "-a" "9e5aa3f2eb013742d918880711a63669e5be6d11c85e2c0d877a7ddd517bb78a", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]    Compiling rustaceans v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: value assigned to `var2` is never read
[INFO] [stdout]   --> src/main.rs:10:13
[INFO] [stdout]    |
[INFO] [stdout] 10 |     let mut var2 = &x;
[INFO] [stdout]    |             ^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_assignments)]` on by default
[INFO] [stdout]    = help: maybe it is overwritten before being read?
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `x` is never read
[INFO] [stdout]   --> src/main.rs:23:5
[INFO] [stdout]    |
[INFO] [stdout] 23 |     x = 43;
[INFO] [stdout]    |     ^
[INFO] [stdout]    |
[INFO] [stdout]    = help: maybe it is overwritten before being read?
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0506]: cannot assign to `x` because it is borrowed
[INFO] [stdout]   --> src/main.rs:23:5
[INFO] [stdout]    |
[INFO] [stdout] 21 |     let y = &x;
[INFO] [stdout]    |             -- borrow of `x` occurs here
[INFO] [stdout] 22 |     // this establishes a second, mutable flow from x, cannot assign from a borrowed value
[INFO] [stdout] 23 |     x = 43;
[INFO] [stdout]    |     ^^^^^^ assignment to borrowed `x` occurs here
[INFO] [stdout] 24 |     // this continues the fl
[INFO] [stdout] 25 |     assert_eq!(*y, 42);
[INFO] [stdout]    |     ------------------ borrow later used here
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to previous error; 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0506`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `rustaceans` due to 2 previous errors; 2 warnings emitted
[INFO] running `Command { std: "docker" "inspect" "9e5aa3f2eb013742d918880711a63669e5be6d11c85e2c0d877a7ddd517bb78a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "9e5aa3f2eb013742d918880711a63669e5be6d11c85e2c0d877a7ddd517bb78a", kill_on_drop: false }`
[INFO] [stdout] 9e5aa3f2eb013742d918880711a63669e5be6d11c85e2c0d877a7ddd517bb78a