[INFO] cloning repository https://github.com/arlopurcell/zax
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/arlopurcell/zax" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Farlopurcell%2Fzax", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Farlopurcell%2Fzax'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 16830c879887385dfa1911c2f91d2b0ea9d922be
[INFO] checking arlopurcell/zax against try#894d32a5432c6a6461bb2aac7c3d5f2e87dce83f for pr-77015
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Farlopurcell%2Fzax" "/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/arlopurcell/zax on toolchain 894d32a5432c6a6461bb2aac7c3d5f2e87dce83f
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+894d32a5432c6a6461bb2aac7c3d5f2e87dce83f" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/arlopurcell/zax
[INFO] finished tweaking git repo https://github.com/arlopurcell/zax
[INFO] tweaked toml for git repo https://github.com/arlopurcell/zax written to /workspace/builds/worker-6/source/Cargo.toml
[INFO] crate git repo https://github.com/arlopurcell/zax already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+894d32a5432c6a6461bb2aac7c3d5f2e87dce83f" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[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" "rustops/crates-build-env@sha256:d92eaeed33fa75130ca1ee6c8a01d1ffb62bac859dfdfb3450e3e5d1c0146529" "/opt/rustwide/cargo-home/bin/cargo" "+894d32a5432c6a6461bb2aac7c3d5f2e87dce83f" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] d8d9de1ede5a1af145a99eddb0e53ff3f66bff0371ec350105d9308b6d45a3d2
[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" "d8d9de1ede5a1af145a99eddb0e53ff3f66bff0371ec350105d9308b6d45a3d2", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "d8d9de1ede5a1af145a99eddb0e53ff3f66bff0371ec350105d9308b6d45a3d2", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "d8d9de1ede5a1af145a99eddb0e53ff3f66bff0371ec350105d9308b6d45a3d2", kill_on_drop: false }`
[INFO] [stdout] d8d9de1ede5a1af145a99eddb0e53ff3f66bff0371ec350105d9308b6d45a3d2
[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" "rustops/crates-build-env@sha256:d92eaeed33fa75130ca1ee6c8a01d1ffb62bac859dfdfb3450e3e5d1c0146529" "/opt/rustwide/cargo-home/bin/cargo" "+894d32a5432c6a6461bb2aac7c3d5f2e87dce83f" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 946babe80c8ec729cba3422d29bffa88b36c6af4ca9add3d6f1db974e507a3f6
[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" "946babe80c8ec729cba3422d29bffa88b36c6af4ca9add3d6f1db974e507a3f6", kill_on_drop: false }`
[INFO] [stderr]    Compiling num-traits v0.2.12
[INFO] [stderr]    Compiling syn v1.0.42
[INFO] [stderr]    Compiling num-derive v0.3.2
[INFO] [stderr]     Checking zax v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `crate::object::FunctionObj`
[INFO] [stdout]  --> src/parser.rs:5:5
[INFO] [stdout]   |
[INFO] [stdout] 5 | use crate::object::FunctionObj;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `crate::object::FunctionObj`
[INFO] [stdout]  --> src/parser.rs:5:5
[INFO] [stdout]   |
[INFO] [stdout] 5 | use crate::object::FunctionObj;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `index`
[INFO] [stdout]    --> src/parser.rs:404:21
[INFO] [stdout]     |
[INFO] [stdout] 404 |             .find(|(index, local)| local.name == name)
[INFO] [stdout]     |                     ^^^^^ help: if this is intentional, prefix it with an underscore: `_index`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `return_type`
[INFO] [stdout]    --> src/type_check.rs:367:34
[INFO] [stdout]     |
[INFO] [stdout] 367 |         AstNodeType::FunctionDef{return_type, params, body} => {
[INFO] [stdout]     |                                  ^^^^^^^^^^^ help: try ignoring the field: `return_type: _`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `index`
[INFO] [stdout]    --> src/parser.rs:404:21
[INFO] [stdout]     |
[INFO] [stdout] 404 |             .find(|(index, local)| local.name == name)
[INFO] [stdout]     |                     ^^^^^ help: if this is intentional, prefix it with an underscore: `_index`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `return_type`
[INFO] [stdout]    --> src/type_check.rs:367:34
[INFO] [stdout]     |
[INFO] [stdout] 367 |         AstNodeType::FunctionDef{return_type, params, body} => {
[INFO] [stdout]     |                                  ^^^^^^^^^^^ help: try ignoring the field: `return_type: _`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `to_bytes`
[INFO] [stdout]    --> src/chunk.rs:266:8
[INFO] [stdout]     |
[INFO] [stdout] 266 |     fn to_bytes(mut self) -> Vec<u8> {
[INFO] [stdout]     |        ^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `from_bytes`
[INFO] [stdout]    --> src/chunk.rs:272:8
[INFO] [stdout]     |
[INFO] [stdout] 272 |     fn from_bytes(bytes: &[u8]) -> Self {
[INFO] [stdout]     |        ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: enum is never used: `FunctionType`
[INFO] [stdout]  --> src/code_gen.rs:9:6
[INFO] [stdout]   |
[INFO] [stdout] 9 | enum FunctionType {
[INFO] [stdout]   |      ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `Bug`
[INFO] [stdout]  --> src/common.rs:5:5
[INFO] [stdout]   |
[INFO] [stdout] 5 |     Bug,
[INFO] [stdout]   |     ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `UnaryLeft`
[INFO] [stdout]    --> src/parser.rs:549:5
[INFO] [stdout]     |
[INFO] [stdout] 549 |     UnaryLeft,
[INFO] [stdout]     |     ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `PrimaryLeft`
[INFO] [stdout]    --> src/parser.rs:553:5
[INFO] [stdout]     |
[INFO] [stdout] 553 |     PrimaryLeft,
[INFO] [stdout]     |     ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `PrimaryRight`
[INFO] [stdout]    --> src/parser.rs:554:5
[INFO] [stdout]     |
[INFO] [stdout] 554 |     PrimaryRight,
[INFO] [stdout]     |     ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `any`
[INFO] [stdout]   --> src/type_check.rs:41:8
[INFO] [stdout]    |
[INFO] [stdout] 41 |     fn any() -> Self {
[INFO] [stdout]    |        ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `Unknown`
[INFO] [stdout]   --> src/type_check.rs:79:5
[INFO] [stdout]    |
[INFO] [stdout] 79 |     Unknown,
[INFO] [stdout]    |     ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `UnknownFunction`
[INFO] [stdout]   --> src/type_check.rs:80:5
[INFO] [stdout]    |
[INFO] [stdout] 80 |     UnknownFunction(String),
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `ArgNumber`
[INFO] [stdout]   --> src/type_check.rs:81:5
[INFO] [stdout]    |
[INFO] [stdout] 81 |     ArgNumber(usize, usize),
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `InvalidFieldRef`
[INFO] [stdout]   --> src/type_check.rs:82:5
[INFO] [stdout]    |
[INFO] [stdout] 82 |     InvalidFieldRef(String),
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `current_frame_mut`
[INFO] [stdout]    --> src/vm.rs:174:8
[INFO] [stdout]     |
[INFO] [stdout] 174 |     fn current_frame_mut(&'a mut self) -> &'a mut CallFrame {
[INFO] [stdout]     |        ^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `to_bytes`
[INFO] [stdout]    --> src/chunk.rs:266:8
[INFO] [stdout]     |
[INFO] [stdout] 266 |     fn to_bytes(mut self) -> Vec<u8> {
[INFO] [stdout]     |        ^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `from_bytes`
[INFO] [stdout]    --> src/chunk.rs:272:8
[INFO] [stdout]     |
[INFO] [stdout] 272 |     fn from_bytes(bytes: &[u8]) -> Self {
[INFO] [stdout]     |        ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 16 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: enum is never used: `FunctionType`
[INFO] [stdout]  --> src/code_gen.rs:9:6
[INFO] [stdout]   |
[INFO] [stdout] 9 | enum FunctionType {
[INFO] [stdout]   |      ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `Bug`
[INFO] [stdout]  --> src/common.rs:5:5
[INFO] [stdout]   |
[INFO] [stdout] 5 |     Bug,
[INFO] [stdout]   |     ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `UnaryLeft`
[INFO] [stdout]    --> src/parser.rs:549:5
[INFO] [stdout]     |
[INFO] [stdout] 549 |     UnaryLeft,
[INFO] [stdout]     |     ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `PrimaryLeft`
[INFO] [stdout]    --> src/parser.rs:553:5
[INFO] [stdout]     |
[INFO] [stdout] 553 |     PrimaryLeft,
[INFO] [stdout]     |     ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `PrimaryRight`
[INFO] [stdout]    --> src/parser.rs:554:5
[INFO] [stdout]     |
[INFO] [stdout] 554 |     PrimaryRight,
[INFO] [stdout]     |     ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `any`
[INFO] [stdout]   --> src/type_check.rs:41:8
[INFO] [stdout]    |
[INFO] [stdout] 41 |     fn any() -> Self {
[INFO] [stdout]    |        ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `Unknown`
[INFO] [stdout]   --> src/type_check.rs:79:5
[INFO] [stdout]    |
[INFO] [stdout] 79 |     Unknown,
[INFO] [stdout]    |     ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `UnknownFunction`
[INFO] [stdout]   --> src/type_check.rs:80:5
[INFO] [stdout]    |
[INFO] [stdout] 80 |     UnknownFunction(String),
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `ArgNumber`
[INFO] [stdout]   --> src/type_check.rs:81:5
[INFO] [stdout]    |
[INFO] [stdout] 81 |     ArgNumber(usize, usize),
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `InvalidFieldRef`
[INFO] [stdout]   --> src/type_check.rs:82:5
[INFO] [stdout]    |
[INFO] [stdout] 82 |     InvalidFieldRef(String),
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `current_frame_mut`
[INFO] [stdout]    --> src/vm.rs:174:8
[INFO] [stdout]     |
[INFO] [stdout] 174 |     fn current_frame_mut(&'a mut self) -> &'a mut CallFrame {
[INFO] [stdout]     |        ^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 16 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 14.71s
[INFO] running `Command { std: "docker" "inspect" "946babe80c8ec729cba3422d29bffa88b36c6af4ca9add3d6f1db974e507a3f6", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "946babe80c8ec729cba3422d29bffa88b36c6af4ca9add3d6f1db974e507a3f6", kill_on_drop: false }`
[INFO] [stdout] 946babe80c8ec729cba3422d29bffa88b36c6af4ca9add3d6f1db974e507a3f6