[INFO] cloning repository https://github.com/jeevcat/clox
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/jeevcat/clox" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fjeevcat%2Fclox", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fjeevcat%2Fclox'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 58f006824df2d03ea122762272dedf6561415ab3
[INFO] testing jeevcat/clox against try#a7ce54db9b096bd1098d07c645b489195a667c9f for pr-137940
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fjeevcat%2Fclox" "/workspace/builds/worker-5-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-5-tc2/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/jeevcat/clox on toolchain a7ce54db9b096bd1098d07c645b489195a667c9f
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+a7ce54db9b096bd1098d07c645b489195a667c9f" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/jeevcat/clox
[INFO] finished tweaking git repo https://github.com/jeevcat/clox
[INFO] tweaked toml for git repo https://github.com/jeevcat/clox written to /workspace/builds/worker-5-tc2/source/Cargo.toml
[INFO] crate git repo https://github.com/jeevcat/clox already has a lockfile, it will not be regenerated
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+a7ce54db9b096bd1098d07c645b489195a667c9f" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc2/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@sha256:1680c8fbd8dfb46fcd6d22e546df16ab0e007457dc29fcd9e987cdd5077fd1af" "/opt/rustwide/cargo-home/bin/cargo" "+a7ce54db9b096bd1098d07c645b489195a667c9f" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stderr] Error response from daemon: write /var/lib/docker/containers/ed91a20eeab8ce732babd581c8094701bf5ef4d8d48c6980910bd12419dc0e73/.tmp-config.v2.json2408352799: no space left on device
[INFO] testing jeevcat/clox against try#a7ce54db9b096bd1098d07c645b489195a667c9f for pr-137940
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fjeevcat%2Fclox" "/workspace/builds/worker-5-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-5-tc2/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/jeevcat/clox on toolchain a7ce54db9b096bd1098d07c645b489195a667c9f
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+a7ce54db9b096bd1098d07c645b489195a667c9f" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/jeevcat/clox
[INFO] finished tweaking git repo https://github.com/jeevcat/clox
[INFO] tweaked toml for git repo https://github.com/jeevcat/clox written to /workspace/builds/worker-5-tc2/source/Cargo.toml
[INFO] crate git repo https://github.com/jeevcat/clox already has a lockfile, it will not be regenerated
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+a7ce54db9b096bd1098d07c645b489195a667c9f" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc2/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@sha256:1680c8fbd8dfb46fcd6d22e546df16ab0e007457dc29fcd9e987cdd5077fd1af" "/opt/rustwide/cargo-home/bin/cargo" "+a7ce54db9b096bd1098d07c645b489195a667c9f" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 40446eb6b3973be993703beec4d40822c1dabb8abd47125e5f6fda0e91ee1c20
[INFO] running `Command { std: "docker" "start" "-a" "40446eb6b3973be993703beec4d40822c1dabb8abd47125e5f6fda0e91ee1c20", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "40446eb6b3973be993703beec4d40822c1dabb8abd47125e5f6fda0e91ee1c20", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "40446eb6b3973be993703beec4d40822c1dabb8abd47125e5f6fda0e91ee1c20", kill_on_drop: false }`
[INFO] [stdout] 40446eb6b3973be993703beec4d40822c1dabb8abd47125e5f6fda0e91ee1c20
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc2/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" "RUSTDOCFLAGS=--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@sha256:1680c8fbd8dfb46fcd6d22e546df16ab0e007457dc29fcd9e987cdd5077fd1af" "/opt/rustwide/cargo-home/bin/cargo" "+a7ce54db9b096bd1098d07c645b489195a667c9f" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 97c6759aa2993d0bef9ba78aa473f282f253d0054a6b5c397329011d38843df4
[INFO] running `Command { std: "docker" "start" "-a" "97c6759aa2993d0bef9ba78aa473f282f253d0054a6b5c397329011d38843df4", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.36
[INFO] [stderr]    Compiling unicode-xid v0.2.2
[INFO] [stderr]    Compiling syn v1.0.84
[INFO] [stderr]    Compiling serde v1.0.132
[INFO] [stderr]    Compiling rustversion v1.0.6
[INFO] [stderr]    Compiling unicode-segmentation v1.8.0
[INFO] [stderr]    Compiling heck v0.3.3
[INFO] [stderr]    Compiling quote v1.0.14
[INFO] [stderr]    Compiling thiserror-impl v1.0.30
[INFO] [stderr]    Compiling derivative v2.2.0
[INFO] [stderr]    Compiling strum_macros v0.23.1
[INFO] [stderr]    Compiling toml v0.5.8
[INFO] [stderr]    Compiling thiserror v1.0.30
[INFO] [stderr]    Compiling proc-macro-crate v1.1.0
[INFO] [stderr]    Compiling strum v0.23.0
[INFO] [stderr]    Compiling num_enum_derive v0.5.5
[INFO] [stderr]    Compiling num_enum v0.5.5
[INFO] [stderr]    Compiling clox v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: struct `Upvalue` is never constructed
[INFO] [stdout]    --> src/compiler.rs:202:12
[INFO] [stdout]     |
[INFO] [stdout] 202 | pub struct Upvalue {
[INFO] [stdout]     |            ^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `Upvalue` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout]     = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `header` is never read
[INFO] [stdout]   --> src/obj.rs:27:9
[INFO] [stdout]    |
[INFO] [stdout] 26 | pub struct LoxString {
[INFO] [stdout]    |            --------- field in this struct
[INFO] [stdout] 27 |     pub header: ObjHeader,
[INFO] [stdout]    |         ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `header` is never read
[INFO] [stdout]   --> src/obj.rs:69:9
[INFO] [stdout]    |
[INFO] [stdout] 68 | pub struct Function {
[INFO] [stdout]    |            -------- field in this struct
[INFO] [stdout] 69 |     pub header: ObjHeader,
[INFO] [stdout]    |         ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `header` is never read
[INFO] [stdout]    --> src/obj.rs:103:9
[INFO] [stdout]     |
[INFO] [stdout] 102 | pub struct NativeFunction {
[INFO] [stdout]     |            -------------- field in this struct
[INFO] [stdout] 103 |     pub header: ObjHeader,
[INFO] [stdout]     |         ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `header` is never read
[INFO] [stdout]    --> src/obj.rs:124:9
[INFO] [stdout]     |
[INFO] [stdout] 123 | pub struct Closure {
[INFO] [stdout]     |            ------- field in this struct
[INFO] [stdout] 124 |     pub header: ObjHeader,
[INFO] [stdout]     |         ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `header` is never read
[INFO] [stdout]    --> src/obj.rs:147:9
[INFO] [stdout]     |
[INFO] [stdout] 146 | pub struct Upvalue {
[INFO] [stdout]     |            ------- field in this struct
[INFO] [stdout] 147 |     pub header: ObjHeader,
[INFO] [stdout]     |         ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `header` is never read
[INFO] [stdout]    --> src/obj.rs:189:9
[INFO] [stdout]     |
[INFO] [stdout] 188 | pub struct Class {
[INFO] [stdout]     |            ----- field in this struct
[INFO] [stdout] 189 |     pub header: ObjHeader,
[INFO] [stdout]     |         ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `header` is never read
[INFO] [stdout]    --> src/obj.rs:211:9
[INFO] [stdout]     |
[INFO] [stdout] 210 | pub struct Instance {
[INFO] [stdout]     |            -------- field in this struct
[INFO] [stdout] 211 |     pub header: ObjHeader,
[INFO] [stdout]     |         ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `header` is never read
[INFO] [stdout]    --> src/obj.rs:233:9
[INFO] [stdout]     |
[INFO] [stdout] 232 | pub struct BoundMethod {
[INFO] [stdout]     |            ----------- field in this struct
[INFO] [stdout] 233 |     pub header: ObjHeader,
[INFO] [stdout]     |         ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 8.49s
[INFO] running `Command { std: "docker" "inspect" "97c6759aa2993d0bef9ba78aa473f282f253d0054a6b5c397329011d38843df4", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "97c6759aa2993d0bef9ba78aa473f282f253d0054a6b5c397329011d38843df4", kill_on_drop: false }`
[INFO] [stdout] 97c6759aa2993d0bef9ba78aa473f282f253d0054a6b5c397329011d38843df4
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc2/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" "RUSTDOCFLAGS=--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@sha256:1680c8fbd8dfb46fcd6d22e546df16ab0e007457dc29fcd9e987cdd5077fd1af" "/opt/rustwide/cargo-home/bin/cargo" "+a7ce54db9b096bd1098d07c645b489195a667c9f" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 1b098b12b875cab709bf3c28a68a9d7680b596ccd2f3b13ef520e3b7ba8feba2
[INFO] running `Command { std: "docker" "start" "-a" "1b098b12b875cab709bf3c28a68a9d7680b596ccd2f3b13ef520e3b7ba8feba2", kill_on_drop: false }`
[INFO] [stderr]    Compiling clox v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: struct `Upvalue` is never constructed
[INFO] [stdout]    --> src/compiler.rs:202:12
[INFO] [stdout]     |
[INFO] [stdout] 202 | pub struct Upvalue {
[INFO] [stdout]     |            ^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `Upvalue` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout]     = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `header` is never read
[INFO] [stdout]    --> src/obj.rs:103:9
[INFO] [stdout]     |
[INFO] [stdout] 102 | pub struct NativeFunction {
[INFO] [stdout]     |            -------------- field in this struct
[INFO] [stdout] 103 |     pub header: ObjHeader,
[INFO] [stdout]     |         ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `header` is never read
[INFO] [stdout]    --> src/obj.rs:124:9
[INFO] [stdout]     |
[INFO] [stdout] 123 | pub struct Closure {
[INFO] [stdout]     |            ------- field in this struct
[INFO] [stdout] 124 |     pub header: ObjHeader,
[INFO] [stdout]     |         ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `header` is never read
[INFO] [stdout]    --> src/obj.rs:147:9
[INFO] [stdout]     |
[INFO] [stdout] 146 | pub struct Upvalue {
[INFO] [stdout]     |            ------- field in this struct
[INFO] [stdout] 147 |     pub header: ObjHeader,
[INFO] [stdout]     |         ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `header` is never read
[INFO] [stdout]    --> src/obj.rs:189:9
[INFO] [stdout]     |
[INFO] [stdout] 188 | pub struct Class {
[INFO] [stdout]     |            ----- field in this struct
[INFO] [stdout] 189 |     pub header: ObjHeader,
[INFO] [stdout]     |         ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `header` is never read
[INFO] [stdout]    --> src/obj.rs:211:9
[INFO] [stdout]     |
[INFO] [stdout] 210 | pub struct Instance {
[INFO] [stdout]     |            -------- field in this struct
[INFO] [stdout] 211 |     pub header: ObjHeader,
[INFO] [stdout]     |         ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `header` is never read
[INFO] [stdout]    --> src/obj.rs:233:9
[INFO] [stdout]     |
[INFO] [stdout] 232 | pub struct BoundMethod {
[INFO] [stdout]     |            ----------- field in this struct
[INFO] [stdout] 233 |     pub header: ObjHeader,
[INFO] [stdout]     |         ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.99s
[INFO] running `Command { std: "docker" "inspect" "1b098b12b875cab709bf3c28a68a9d7680b596ccd2f3b13ef520e3b7ba8feba2", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "1b098b12b875cab709bf3c28a68a9d7680b596ccd2f3b13ef520e3b7ba8feba2", kill_on_drop: false }`
[INFO] [stdout] 1b098b12b875cab709bf3c28a68a9d7680b596ccd2f3b13ef520e3b7ba8feba2
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc2/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" "RUSTDOCFLAGS=--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@sha256:1680c8fbd8dfb46fcd6d22e546df16ab0e007457dc29fcd9e987cdd5077fd1af" "/opt/rustwide/cargo-home/bin/cargo" "+a7ce54db9b096bd1098d07c645b489195a667c9f" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] dc0d169486bcec749abcbd1d3d82d9e04820760024f9a3e0f8780c92f7dd2b75
[INFO] running `Command { std: "docker" "start" "-a" "dc0d169486bcec749abcbd1d3d82d9e04820760024f9a3e0f8780c92f7dd2b75", kill_on_drop: false }`
[INFO] [stderr] warning: struct `Upvalue` is never constructed
[INFO] [stderr]    --> src/compiler.rs:202:12
[INFO] [stderr]     |
[INFO] [stderr] 202 | pub struct Upvalue {
[INFO] [stderr]     |            ^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: `Upvalue` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stderr]     = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: field `header` is never read
[INFO] [stderr]    --> src/obj.rs:103:9
[INFO] [stderr]     |
[INFO] [stderr] 102 | pub struct NativeFunction {
[INFO] [stderr]     |            -------------- field in this struct
[INFO] [stderr] 103 |     pub header: ObjHeader,
[INFO] [stderr]     |         ^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: field `header` is never read
[INFO] [stderr]    --> src/obj.rs:124:9
[INFO] [stderr]     |
[INFO] [stderr] 123 | pub struct Closure {
[INFO] [stderr]     |            ------- field in this struct
[INFO] [stderr] 124 |     pub header: ObjHeader,
[INFO] [stderr]     |         ^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: field `header` is never read
[INFO] [stderr]    --> src/obj.rs:147:9
[INFO] [stderr]     |
[INFO] [stderr] 146 | pub struct Upvalue {
[INFO] [stderr]     |            ------- field in this struct
[INFO] [stderr] 147 |     pub header: ObjHeader,
[INFO] [stderr]     |         ^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: field `header` is never read
[INFO] [stderr]    --> src/obj.rs:189:9
[INFO] [stderr]     |
[INFO] [stderr] 188 | pub struct Class {
[INFO] [stderr]     |            ----- field in this struct
[INFO] [stderr] 189 |     pub header: ObjHeader,
[INFO] [stderr]     |         ^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: field `header` is never read
[INFO] [stderr]    --> src/obj.rs:211:9
[INFO] [stderr]     |
[INFO] [stderr] 210 | pub struct Instance {
[INFO] [stderr]     |            -------- field in this struct
[INFO] [stderr] 211 |     pub header: ObjHeader,
[INFO] [stderr]     |         ^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: field `header` is never read
[INFO] [stderr]    --> src/obj.rs:233:9
[INFO] [stderr]     |
[INFO] [stderr] 232 | pub struct BoundMethod {
[INFO] [stderr]     |            ----------- field in this struct
[INFO] [stderr] 233 |     pub header: ObjHeader,
[INFO] [stderr]     |         ^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: `clox` (bin "clox" test) generated 7 warnings
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.04s
[INFO] [stdout] 
[INFO] [stderr]      Running unittests src/main.rs (/opt/rustwide/target/debug/deps/clox-58ce251e75a2cf23)
[INFO] [stdout] running 9 tests
[INFO] [stderr] error: test failed, to rerun pass `--bin clox`
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   process didn't exit successfully: `/opt/rustwide/target/debug/deps/clox-58ce251e75a2cf23` (signal: 11, SIGSEGV: invalid memory reference)
[INFO] running `Command { std: "docker" "inspect" "dc0d169486bcec749abcbd1d3d82d9e04820760024f9a3e0f8780c92f7dd2b75", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "dc0d169486bcec749abcbd1d3d82d9e04820760024f9a3e0f8780c92f7dd2b75", kill_on_drop: false }`
[INFO] [stdout] dc0d169486bcec749abcbd1d3d82d9e04820760024f9a3e0f8780c92f7dd2b75