[INFO] cloning repository https://github.com/eklavya/rustylox
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/eklavya/rustylox" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Feklavya%2Frustylox", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Feklavya%2Frustylox'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 15cbcff8a64b13eaf2ad64be99cc0fd4defa34fd
[INFO] checking eklavya/rustylox against try#f47dd4da3ae8c32c9e65d307bfe640b143e674df for pr-77526
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Feklavya%2Frustylox" "/workspace/builds/worker-0/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-0/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/eklavya/rustylox on toolchain f47dd4da3ae8c32c9e65d307bfe640b143e674df
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+f47dd4da3ae8c32c9e65d307bfe640b143e674df" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/eklavya/rustylox
[INFO] finished tweaking git repo https://github.com/eklavya/rustylox
[INFO] tweaked toml for git repo https://github.com/eklavya/rustylox written to /workspace/builds/worker-0/source/Cargo.toml
[INFO] crate git repo https://github.com/eklavya/rustylox already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+f47dd4da3ae8c32c9e65d307bfe640b143e674df" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded num_enum_derive v0.5.0
[INFO] [stderr]   Downloaded num_enum v0.5.0
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/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" "+f47dd4da3ae8c32c9e65d307bfe640b143e674df" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] 199353f832dfdd8df9609b21b835e543f045d59b5a8105305411db1c489c92a8
[INFO] running `Command { std: "docker" "start" "-a" "199353f832dfdd8df9609b21b835e543f045d59b5a8105305411db1c489c92a8", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "199353f832dfdd8df9609b21b835e543f045d59b5a8105305411db1c489c92a8", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "199353f832dfdd8df9609b21b835e543f045d59b5a8105305411db1c489c92a8", kill_on_drop: false }`
[INFO] [stdout] 199353f832dfdd8df9609b21b835e543f045d59b5a8105305411db1c489c92a8
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/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" "+f47dd4da3ae8c32c9e65d307bfe640b143e674df" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 985d4fd03a48836b072e4c32cff2b88d126b73a9f5ba8e96c14f35278001f71c
[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" "985d4fd03a48836b072e4c32cff2b88d126b73a9f5ba8e96c14f35278001f71c", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.14
[INFO] [stderr]    Compiling serde v1.0.110
[INFO] [stderr]    Compiling syn v1.0.23
[INFO] [stderr]    Compiling quote v1.0.6
[INFO] [stderr]    Compiling toml v0.5.6
[INFO] [stderr]    Compiling derivative v2.1.1
[INFO] [stderr]    Compiling proc-macro-crate v0.1.4
[INFO] [stderr]    Compiling num_enum_derive v0.5.0
[INFO] [stderr]     Checking num_enum v0.5.0
[INFO] [stderr]     Checking rustylox v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `std::mem`
[INFO] [stdout]  --> src/obj.rs:3:5
[INFO] [stdout]   |
[INFO] [stdout] 3 | use std::mem;
[INFO] [stdout]   |     ^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `self`
[INFO] [stdout]  --> src/vm.rs:5:18
[INFO] [stdout]   |
[INFO] [stdout] 5 | use crate::obj::{self, ObjString, ObjType, Object};
[INFO] [stdout]   |                  ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::mem`
[INFO] [stdout]  --> src/obj.rs:3:5
[INFO] [stdout]   |
[INFO] [stdout] 3 | use std::mem;
[INFO] [stdout]   |     ^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `self`
[INFO] [stdout]  --> src/vm.rs:5:18
[INFO] [stdout]   |
[INFO] [stdout] 5 | use crate::obj::{self, ObjString, ObjType, Object};
[INFO] [stdout]   |                  ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unreachable pattern
[INFO] [stdout]    --> src/vm.rs:229:21
[INFO] [stdout]     |
[INFO] [stdout] 229 |                     _ => false,
[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/vm.rs:229:21
[INFO] [stdout]     |
[INFO] [stdout] 229 |                     _ => false,
[INFO] [stdout]     |                     ^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unreachable_patterns)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `write_long`
[INFO] [stdout]   --> src/chunk.rs:67:12
[INFO] [stdout]    |
[INFO] [stdout] 67 |     pub fn write_long(&mut self, num: u16, line: i32) -> () {
[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: `free`
[INFO] [stdout]   --> src/chunk.rs:75:12
[INFO] [stdout]    |
[INFO] [stdout] 75 |     pub fn free(&mut self) -> () {
[INFO] [stdout]    |            ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated constant is never used: `PARSE_RULES_DBG`
[INFO] [stdout]    --> src/compiler.rs:256:5
[INFO] [stdout]     |
[INFO] [stdout] 256 | /     const PARSE_RULES_DBG: [&'static str; 44] = [
[INFO] [stdout] 257 | |         "ParseRule {
[INFO] [stdout] 258 | |             prefix: Some(Compiler::grouping),
[INFO] [stdout] 259 | |             infix: None,
[INFO] [stdout] ...   |
[INFO] [stdout] 486 | |             // }, // TOKEN_COLON
[INFO] [stdout] 487 | |     ];
[INFO] [stdout]     | |______^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `dealloc`
[INFO] [stdout]   --> src/gc.rs:10:12
[INFO] [stdout]    |
[INFO] [stdout] 10 |     pub fn dealloc(ptr: *mut u8, layout: Layout) {
[INFO] [stdout]    |            ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `is_obj_type`
[INFO] [stdout]   --> src/obj.rs:25:8
[INFO] [stdout]    |
[INFO] [stdout] 25 | pub fn is_obj_type(v: Value, obj_type: ObjType) -> bool {
[INFO] [stdout]    |        ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `show_stack`
[INFO] [stdout]    --> src/vm.rs:124:8
[INFO] [stdout]     |
[INFO] [stdout] 124 |     fn show_stack(&self) {
[INFO] [stdout]     |        ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `std::result::Result` that must be used
[INFO] [stdout]   --> src/main.rs:43:9
[INFO] [stdout]    |
[INFO] [stdout] 43 |         stdout().flush();
[INFO] [stdout]    |         ^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_must_use)]` on by default
[INFO] [stdout]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `std::result::Result` that must be used
[INFO] [stdout]   --> src/main.rs:45:9
[INFO] [stdout]    |
[INFO] [stdout] 45 |         reader.read_line(&mut input);
[INFO] [stdout]    |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: comparison is useless due to type limits
[INFO] [stdout]    --> src/compiler.rs:641:12
[INFO] [stdout]     |
[INFO] [stdout] 641 |         if constant > 255 {
[INFO] [stdout]     |            ^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_comparisons)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `write_long`
[INFO] [stdout]   --> src/chunk.rs:67:12
[INFO] [stdout]    |
[INFO] [stdout] 67 |     pub fn write_long(&mut self, num: u16, line: i32) -> () {
[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: `free`
[INFO] [stdout]   --> src/chunk.rs:75:12
[INFO] [stdout]    |
[INFO] [stdout] 75 |     pub fn free(&mut self) -> () {
[INFO] [stdout]    |            ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated constant is never used: `PARSE_RULES_DBG`
[INFO] [stdout]    --> src/compiler.rs:256:5
[INFO] [stdout]     |
[INFO] [stdout] 256 | /     const PARSE_RULES_DBG: [&'static str; 44] = [
[INFO] [stdout] 257 | |         "ParseRule {
[INFO] [stdout] 258 | |             prefix: Some(Compiler::grouping),
[INFO] [stdout] 259 | |             infix: None,
[INFO] [stdout] ...   |
[INFO] [stdout] 486 | |             // }, // TOKEN_COLON
[INFO] [stdout] 487 | |     ];
[INFO] [stdout]     | |______^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `dealloc`
[INFO] [stdout]   --> src/gc.rs:10:12
[INFO] [stdout]    |
[INFO] [stdout] 10 |     pub fn dealloc(ptr: *mut u8, layout: Layout) {
[INFO] [stdout]    |            ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `is_obj_type`
[INFO] [stdout]   --> src/obj.rs:25:8
[INFO] [stdout]    |
[INFO] [stdout] 25 | pub fn is_obj_type(v: Value, obj_type: ObjType) -> bool {
[INFO] [stdout]    |        ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `show_stack`
[INFO] [stdout]    --> src/vm.rs:124:8
[INFO] [stdout]     |
[INFO] [stdout] 124 |     fn show_stack(&self) {
[INFO] [stdout]     |        ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 12 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `std::result::Result` that must be used
[INFO] [stdout]   --> src/main.rs:43:9
[INFO] [stdout]    |
[INFO] [stdout] 43 |         stdout().flush();
[INFO] [stdout]    |         ^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_must_use)]` on by default
[INFO] [stdout]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `std::result::Result` that must be used
[INFO] [stdout]   --> src/main.rs:45:9
[INFO] [stdout]    |
[INFO] [stdout] 45 |         reader.read_line(&mut input);
[INFO] [stdout]    |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: comparison is useless due to type limits
[INFO] [stdout]    --> src/compiler.rs:641:12
[INFO] [stdout]     |
[INFO] [stdout] 641 |         if constant > 255 {
[INFO] [stdout]     |            ^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_comparisons)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 12 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 31.81s
[INFO] running `Command { std: "docker" "inspect" "985d4fd03a48836b072e4c32cff2b88d126b73a9f5ba8e96c14f35278001f71c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "985d4fd03a48836b072e4c32cff2b88d126b73a9f5ba8e96c14f35278001f71c", kill_on_drop: false }`
[INFO] [stdout] 985d4fd03a48836b072e4c32cff2b88d126b73a9f5ba8e96c14f35278001f71c