[INFO] cloning repository https://github.com/paavohuhtala/toylang
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/paavohuhtala/toylang" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fpaavohuhtala%2Ftoylang", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fpaavohuhtala%2Ftoylang'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 3cef30c0fec1d034c80bec83264738666facf326
[INFO] documenting paavohuhtala/toylang against 1.46.0 for beta-1.47-rustdoc-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fpaavohuhtala%2Ftoylang" "/workspace/builds/worker-2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-2/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/paavohuhtala/toylang on toolchain 1.46.0
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.46.0" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/paavohuhtala/toylang
[INFO] finished tweaking git repo https://github.com/paavohuhtala/toylang
[INFO] tweaked toml for git repo https://github.com/paavohuhtala/toylang written to /workspace/builds/worker-2/source/Cargo.toml
[INFO] crate git repo https://github.com/paavohuhtala/toylang already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.46.0" "fetch" "--locked" "--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-2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/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:d92eaeed33fa75130ca1ee6c8a01d1ffb62bac859dfdfb3450e3e5d1c0146529" "/opt/rustwide/cargo-home/bin/cargo" "+1.46.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 18b82f58123787fdedd430f6bcedf54b1d33f0d23e7c3e408ac32f6388caa921
[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" "18b82f58123787fdedd430f6bcedf54b1d33f0d23e7c3e408ac32f6388caa921", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "18b82f58123787fdedd430f6bcedf54b1d33f0d23e7c3e408ac32f6388caa921", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "18b82f58123787fdedd430f6bcedf54b1d33f0d23e7c3e408ac32f6388caa921", kill_on_drop: false }`
[INFO] [stdout] 18b82f58123787fdedd430f6bcedf54b1d33f0d23e7c3e408ac32f6388caa921
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/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" "RUSTDOCFLAGS=--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:d92eaeed33fa75130ca1ee6c8a01d1ffb62bac859dfdfb3450e3e5d1c0146529" "/opt/rustwide/cargo-home/bin/cargo" "+1.46.0" "doc" "--frozen" "--no-deps" "--document-private-items" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 7cb17019c1cb1c9a36561026d2a28dcec8a7dbcde96e153d98d85ecc0bb04fb9
[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" "7cb17019c1cb1c9a36561026d2a28dcec8a7dbcde96e153d98d85ecc0bb04fb9", kill_on_drop: false }`
[INFO] [stderr]     Checking toylanguage v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr]  Documenting toylanguage v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unreachable pattern
[INFO] [stdout]   --> src/interpreter.rs:53:7
[INFO] [stdout]    |
[INFO] [stdout] 53 |       _ => unreachable!(),
[INFO] [stdout]    |       ^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unreachable_patterns)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unreachable pattern
[INFO] [stdout]    --> src/type_checker.rs:100:5
[INFO] [stdout]     |
[INFO] [stdout] 100 |     _ => unimplemented!(),
[INFO] [stdout]     |     ^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unreachable pattern
[INFO] [stdout]    --> src/type_checker.rs:141:5
[INFO] [stdout]     |
[INFO] [stdout] 141 |     _ => panic!(),
[INFO] [stdout]     |     ^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `ctx`
[INFO] [stdout]   --> src/type_checker.rs:35:18
[INFO] [stdout]    |
[INFO] [stdout] 35 | pub fn are_equal(ctx: &mut SemanticContext, a: TypeRef, b: TypeRef) -> bool {
[INFO] [stdout]    |                  ^^^ help: if this is intentional, prefix it with an underscore: `_ctx`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `ctx`
[INFO] [stdout]   --> src/type_checker.rs:43:22
[INFO] [stdout]    |
[INFO] [stdout] 43 | pub fn is_assignable(ctx: &mut SemanticContext, a: TypeRef, b: TypeRef) -> bool {
[INFO] [stdout]    |                      ^^^ help: if this is intentional, prefix it with an underscore: `_ctx`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `semantic_ctx`
[INFO] [stdout]   --> src/interpreter.rs:14:3
[INFO] [stdout]    |
[INFO] [stdout] 14 |   semantic_ctx: SemanticContext,
[INFO] [stdout]    |   ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 6 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 3.46s
[INFO] running `Command { std: "docker" "inspect" "7cb17019c1cb1c9a36561026d2a28dcec8a7dbcde96e153d98d85ecc0bb04fb9", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "7cb17019c1cb1c9a36561026d2a28dcec8a7dbcde96e153d98d85ecc0bb04fb9", kill_on_drop: false }`
[INFO] [stdout] 7cb17019c1cb1c9a36561026d2a28dcec8a7dbcde96e153d98d85ecc0bb04fb9