[INFO] cloning repository https://github.com/16dprice/rlox
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/16dprice/rlox" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2F16dprice%2Frlox", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2F16dprice%2Frlox'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 54ba29afa200ba12d46aced9e2ebfe1882fa0c60
[INFO] building 16dprice/rlox against master#11663cd3bfefef7d34e8f0892c250bf698049392+rustflags=-Dtail-expr-drop-order for pr-134523
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2F16dprice%2Frlox" "/workspace/builds/worker-3-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-3-tc1/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/16dprice/rlox on toolchain 11663cd3bfefef7d34e8f0892c250bf698049392
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+11663cd3bfefef7d34e8f0892c250bf698049392" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/16dprice/rlox
[INFO] finished tweaking git repo https://github.com/16dprice/rlox
[INFO] tweaked toml for git repo https://github.com/16dprice/rlox written to /workspace/builds/worker-3-tc1/source/Cargo.toml
[INFO] crate git repo https://github.com/16dprice/rlox 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" "+11663cd3bfefef7d34e8f0892c250bf698049392" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded mini-json v0.1.1
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc1/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:f3a9d4ad9d972b27faf3965f35b62e55ba32bbce8f20bc8fe909558a86702fde" "/opt/rustwide/cargo-home/bin/cargo" "+11663cd3bfefef7d34e8f0892c250bf698049392" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 421f3a7e8587f8c3c60cf878ff148c0ee04fcdf45f83661d3c0681814a582bbc
[INFO] running `Command { std: "docker" "start" "-a" "421f3a7e8587f8c3c60cf878ff148c0ee04fcdf45f83661d3c0681814a582bbc", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "421f3a7e8587f8c3c60cf878ff148c0ee04fcdf45f83661d3c0681814a582bbc", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "421f3a7e8587f8c3c60cf878ff148c0ee04fcdf45f83661d3c0681814a582bbc", kill_on_drop: false }`
[INFO] [stdout] 421f3a7e8587f8c3c60cf878ff148c0ee04fcdf45f83661d3c0681814a582bbc
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc1/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 -Dtail-expr-drop-order" "-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:f3a9d4ad9d972b27faf3965f35b62e55ba32bbce8f20bc8fe909558a86702fde" "/opt/rustwide/cargo-home/bin/cargo" "+11663cd3bfefef7d34e8f0892c250bf698049392" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] f91d7dbea661d0a3c5f6cde2b69bcaa564ca7b85ec02fa39b05de5ad83b0824a
[INFO] running `Command { std: "docker" "start" "-a" "f91d7dbea661d0a3c5f6cde2b69bcaa564ca7b85ec02fa39b05de5ad83b0824a", kill_on_drop: false }`
[INFO] [stderr]    Compiling mini-json v0.1.1
[INFO] [stderr]    Compiling rlox v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `std::env`
[INFO] [stdout]   --> src/main.rs:13:5
[INFO] [stdout]    |
[INFO] [stdout] 13 | use std::env;
[INFO] [stdout]    |     ^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/math/limit.rs:26:13
[INFO] [stdout]    |
[INFO] [stdout] 26 |         let mut terms = Vec::new();
[INFO] [stdout]    |             ----^^^^^
[INFO] [stdout]    |             |
[INFO] [stdout]    |             help: remove this `mut`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_mut)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `run_file` is never used
[INFO] [stdout]   --> src/main.rs:48:4
[INFO] [stdout]    |
[INFO] [stdout] 48 | fn run_file(file_path: &str) {
[INFO] [stdout]    |    ^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `debug_to_file` is never used
[INFO] [stdout]   --> src/main.rs:65:4
[INFO] [stdout]    |
[INFO] [stdout] 65 | fn debug_to_file(file_path: &str) {
[INFO] [stdout]    |    ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `simple_instruction` is never used
[INFO] [stdout]    --> src/debug.rs:247:8
[INFO] [stdout]     |
[INFO] [stdout] 247 |     fn simple_instruction(name: &str, offset: usize) -> (String, usize) {
[INFO] [stdout]     |        ^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `disassemble_instruction` is never used
[INFO] [stdout]    --> src/debug.rs:251:8
[INFO] [stdout]     |
[INFO] [stdout] 251 |     fn disassemble_instruction(chunk: &Chunk, offset: usize) -> (String, usize) {
[INFO] [stdout]     |        ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `write_chunk_to_file` is never used
[INFO] [stdout]    --> src/debug.rs:420:12
[INFO] [stdout]     |
[INFO] [stdout] 420 |     pub fn write_chunk_to_file(source: String, chunk: &Chunk, output_path: &str) {
[INFO] [stdout]     |            ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Term` is never constructed
[INFO] [stdout]  --> src/math/limit.rs:1:8
[INFO] [stdout]   |
[INFO] [stdout] 1 | struct Term {
[INFO] [stdout]   |        ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Polynomial` is never constructed
[INFO] [stdout]  --> src/math/limit.rs:6:8
[INFO] [stdout]   |
[INFO] [stdout] 6 | struct Polynomial {
[INFO] [stdout]   |        ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `compute` is never used
[INFO] [stdout]   --> src/math/limit.rs:11:12
[INFO] [stdout]    |
[INFO] [stdout] 10 | impl Polynomial {
[INFO] [stdout]    | --------------- method in this implementation
[INFO] [stdout] 11 |     pub fn compute(&self, x: f64) -> f64 {
[INFO] [stdout]    |            ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `PolynomialParser` is never constructed
[INFO] [stdout]   --> src/math/limit.rs:20:8
[INFO] [stdout]    |
[INFO] [stdout] 20 | struct PolynomialParser {
[INFO] [stdout]    |        ^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `parse_polynomial` is never used
[INFO] [stdout]   --> src/math/limit.rs:25:8
[INFO] [stdout]    |
[INFO] [stdout] 24 | impl PolynomialParser {
[INFO] [stdout]    | --------------------- method in this implementation
[INFO] [stdout] 25 |     fn parse_polynomial(&self) -> Result<Polynomial, String> {
[INFO] [stdout]    |        ^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `parse_polynomial` is never used
[INFO] [stdout]   --> src/math/limit.rs:37:8
[INFO] [stdout]    |
[INFO] [stdout] 37 | pub fn parse_polynomial(expression: String) {
[INFO] [stdout]    |        ^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `index` is never read
[INFO] [stdout]   --> src/value.rs:60:9
[INFO] [stdout]    |
[INFO] [stdout] 56 | pub struct Upvalue {
[INFO] [stdout]    |            ------- field in this struct
[INFO] [stdout] ...
[INFO] [stdout] 60 |     pub index: usize,
[INFO] [stdout]    |         ^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `Upvalue` has derived impls for the traits `Clone` and `Debug`, but these are intentionally ignored during dead code analysis
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 0.42s
[INFO] running `Command { std: "docker" "inspect" "f91d7dbea661d0a3c5f6cde2b69bcaa564ca7b85ec02fa39b05de5ad83b0824a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "f91d7dbea661d0a3c5f6cde2b69bcaa564ca7b85ec02fa39b05de5ad83b0824a", kill_on_drop: false }`
[INFO] [stdout] f91d7dbea661d0a3c5f6cde2b69bcaa564ca7b85ec02fa39b05de5ad83b0824a
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc1/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 -Dtail-expr-drop-order" "-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:f3a9d4ad9d972b27faf3965f35b62e55ba32bbce8f20bc8fe909558a86702fde" "/opt/rustwide/cargo-home/bin/cargo" "+11663cd3bfefef7d34e8f0892c250bf698049392" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] ae6a5f73f2107cee2a1d6b5b37fd342bd4202373a68b1e5397f3eb7fc797cfa1
[INFO] running `Command { std: "docker" "start" "-a" "ae6a5f73f2107cee2a1d6b5b37fd342bd4202373a68b1e5397f3eb7fc797cfa1", kill_on_drop: false }`
[INFO] [stderr]    Compiling rlox v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `std::env`
[INFO] [stdout]   --> src/main.rs:13:5
[INFO] [stdout]    |
[INFO] [stdout] 13 | use std::env;
[INFO] [stdout]    |     ^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/math/limit.rs:26:13
[INFO] [stdout]    |
[INFO] [stdout] 26 |         let mut terms = Vec::new();
[INFO] [stdout]    |             ----^^^^^
[INFO] [stdout]    |             |
[INFO] [stdout]    |             help: remove this `mut`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_mut)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `run_file` is never used
[INFO] [stdout]   --> src/main.rs:48:4
[INFO] [stdout]    |
[INFO] [stdout] 48 | fn run_file(file_path: &str) {
[INFO] [stdout]    |    ^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `debug_to_file` is never used
[INFO] [stdout]   --> src/main.rs:65:4
[INFO] [stdout]    |
[INFO] [stdout] 65 | fn debug_to_file(file_path: &str) {
[INFO] [stdout]    |    ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `simple_instruction` is never used
[INFO] [stdout]    --> src/debug.rs:247:8
[INFO] [stdout]     |
[INFO] [stdout] 247 |     fn simple_instruction(name: &str, offset: usize) -> (String, usize) {
[INFO] [stdout]     |        ^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `disassemble_instruction` is never used
[INFO] [stdout]    --> src/debug.rs:251:8
[INFO] [stdout]     |
[INFO] [stdout] 251 |     fn disassemble_instruction(chunk: &Chunk, offset: usize) -> (String, usize) {
[INFO] [stdout]     |        ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `write_chunk_to_file` is never used
[INFO] [stdout]    --> src/debug.rs:420:12
[INFO] [stdout]     |
[INFO] [stdout] 420 |     pub fn write_chunk_to_file(source: String, chunk: &Chunk, output_path: &str) {
[INFO] [stdout]     |            ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `index` is never read
[INFO] [stdout]   --> src/value.rs:60:9
[INFO] [stdout]    |
[INFO] [stdout] 56 | pub struct Upvalue {
[INFO] [stdout]    |            ------- field in this struct
[INFO] [stdout] ...
[INFO] [stdout] 60 |     pub index: usize,
[INFO] [stdout]    |         ^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `Upvalue` has derived impls for the traits `Clone` and `Debug`, but these are intentionally ignored during dead code analysis
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.47s
[INFO] running `Command { std: "docker" "inspect" "ae6a5f73f2107cee2a1d6b5b37fd342bd4202373a68b1e5397f3eb7fc797cfa1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "ae6a5f73f2107cee2a1d6b5b37fd342bd4202373a68b1e5397f3eb7fc797cfa1", kill_on_drop: false }`
[INFO] [stdout] ae6a5f73f2107cee2a1d6b5b37fd342bd4202373a68b1e5397f3eb7fc797cfa1