[INFO] cloning repository https://github.com/voidedlegacy/CL
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/voidedlegacy/CL" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fvoidedlegacy%2FCL", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fvoidedlegacy%2FCL'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 0b8b2c223981d67e36e632a70083263091cf54d1
[INFO] testing voidedlegacy/CL against try#8de4c7234dd9b97c9d76b58671343fdbbc9a433e+target=x86_64-unknown-linux-musl for musl_upgrade_1_2_5_with_libc_patch_0
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fvoidedlegacy%2FCL" "/workspace/builds/worker-4-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-4-tc1/source'...
[INFO] [stderr] done.
[INFO] started tweaking git repo https://github.com/voidedlegacy/CL
[INFO] finished tweaking git repo https://github.com/voidedlegacy/CL
[INFO] tweaked toml for git repo https://github.com/voidedlegacy/CL written to /workspace/builds/worker-4-tc1/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/voidedlegacy/CL on toolchain 8de4c7234dd9b97c9d76b58671343fdbbc9a433e
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+8de4c7234dd9b97c9d76b58671343fdbbc9a433e" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/voidedlegacy/CL 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" "+8de4c7234dd9b97c9d76b58671343fdbbc9a433e" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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@sha256:90999bfc7ae267e83380e433d8e61a7c072ca6729e92edbae886d3423b3a6f4c" "/opt/rustwide/cargo-home/bin/cargo" "+8de4c7234dd9b97c9d76b58671343fdbbc9a433e" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 6b6bd4d2f96f542139ddc1b9409b6013a96d8b4ea35b6824e3b328189d796c0a
[INFO] running `Command { std: "docker" "start" "-a" "6b6bd4d2f96f542139ddc1b9409b6013a96d8b4ea35b6824e3b328189d796c0a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "6b6bd4d2f96f542139ddc1b9409b6013a96d8b4ea35b6824e3b328189d796c0a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "6b6bd4d2f96f542139ddc1b9409b6013a96d8b4ea35b6824e3b328189d796c0a", kill_on_drop: false }`
[INFO] [stdout] 6b6bd4d2f96f542139ddc1b9409b6013a96d8b4ea35b6824e3b328189d796c0a
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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" "-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@sha256:90999bfc7ae267e83380e433d8e61a7c072ca6729e92edbae886d3423b3a6f4c" "/opt/rustwide/cargo-home/bin/cargo" "+8de4c7234dd9b97c9d76b58671343fdbbc9a433e" "build" "--frozen" "--message-format=json" "--target" "x86_64-unknown-linux-musl", kill_on_drop: false }`
[INFO] [stdout] 94595394738df3b5ac0ae941c310c5a9a90de2956be6be25269d5e1ed33de376
[INFO] running `Command { std: "docker" "start" "-a" "94595394738df3b5ac0ae941c310c5a9a90de2956be6be25269d5e1ed33de376", kill_on_drop: false }`
[INFO] [stderr]    Compiling compiler v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: field `parent` is never read
[INFO] [stdout]  --> src/environment.rs:7:9
[INFO] [stdout]   |
[INFO] [stdout] 6 | pub struct Environment {
[INFO] [stdout]   |            ----------- field in this struct
[INFO] [stdout] 7 |     pub parent: Option<Box<Environment>>,
[INFO] [stdout]   |         ^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `Environment` 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: enum `ErrorType` is never used
[INFO] [stdout]  --> src/error.rs:2:6
[INFO] [stdout]   |
[INFO] [stdout] 2 | enum ErrorType {
[INFO] [stdout]   |      ^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `ErrorType` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Error` is never constructed
[INFO] [stdout]   --> src/error.rs:13:8
[INFO] [stdout]    |
[INFO] [stdout] 13 | struct Error {
[INFO] [stdout]    |        ^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `Error` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function `new` is never used
[INFO] [stdout]   --> src/error.rs:19:8
[INFO] [stdout]    |
[INFO] [stdout] 18 | impl Error {
[INFO] [stdout]    | ---------- associated function in this implementation
[INFO] [stdout] 19 |     fn new(error_type: ErrorType, msg: Option<String>) -> Self {
[INFO] [stdout]    |        ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `print_error` is never used
[INFO] [stdout]   --> src/error.rs:24:4
[INFO] [stdout]    |
[INFO] [stdout] 24 | fn print_error(err: &Error) {
[INFO] [stdout]    |    ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `main` is never used
[INFO] [stdout]   --> src/error.rs:43:4
[INFO] [stdout]    |
[INFO] [stdout] 43 | fn main() {
[INFO] [stdout]    |    ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `file_size` is never used
[INFO] [stdout]  --> src/file_io.rs:5:4
[INFO] [stdout]   |
[INFO] [stdout] 5 | fn file_size(file: &mut File) -> io::Result<u64> {
[INFO] [stdout]   |    ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `file_contents` is never used
[INFO] [stdout]   --> src/file_io.rs:12:4
[INFO] [stdout]    |
[INFO] [stdout] 12 | fn file_contents(path: &str) -> io::Result<String> {
[INFO] [stdout]    |    ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `main` is never used
[INFO] [stdout]   --> src/file_io.rs:22:4
[INFO] [stdout]    |
[INFO] [stdout] 22 | fn main() {
[INFO] [stdout]    |    ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `variables` is never read
[INFO] [stdout]  --> src/parser.rs:8:9
[INFO] [stdout]   |
[INFO] [stdout] 6 | pub struct ParsingContext {
[INFO] [stdout]   |            -------------- field in this struct
[INFO] [stdout] 7 |     pub types: Environment,
[INFO] [stdout] 8 |     pub variables: Environment,
[INFO] [stdout]   |         ^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `ParsingContext` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant `Program` is never constructed
[INFO] [stdout]   --> src/node.rs:12:5
[INFO] [stdout]    |
[INFO] [stdout] 4  | pub enum NodeType {
[INFO] [stdout]    |          -------- variant in this enum
[INFO] [stdout] ...
[INFO] [stdout] 12 |     Program,
[INFO] [stdout]    |     ^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `NodeType` has derived impls for the traits `Debug` and `Clone`, but these are intentionally ignored during dead code analysis
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function `compare` is never used
[INFO] [stdout]   --> src/node.rs:59:12
[INFO] [stdout]    |
[INFO] [stdout] 37 | impl Node {
[INFO] [stdout]    | --------- associated function in this implementation
[INFO] [stdout] ...
[INFO] [stdout] 59 |     pub fn compare(a: &Node, b: &Node) -> bool {
[INFO] [stdout]    |            ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 0.67s
[INFO] running `Command { std: "docker" "inspect" "94595394738df3b5ac0ae941c310c5a9a90de2956be6be25269d5e1ed33de376", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "94595394738df3b5ac0ae941c310c5a9a90de2956be6be25269d5e1ed33de376", kill_on_drop: false }`
[INFO] [stdout] 94595394738df3b5ac0ae941c310c5a9a90de2956be6be25269d5e1ed33de376
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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" "-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@sha256:90999bfc7ae267e83380e433d8e61a7c072ca6729e92edbae886d3423b3a6f4c" "/opt/rustwide/cargo-home/bin/cargo" "+8de4c7234dd9b97c9d76b58671343fdbbc9a433e" "test" "--frozen" "--no-run" "--message-format=json" "--target" "x86_64-unknown-linux-musl", kill_on_drop: false }`
[INFO] [stdout] e5ecb63209ece84739cecf092d392ef623d5a7991af70c7cd9312a038f8b053e
[INFO] running `Command { std: "docker" "start" "-a" "e5ecb63209ece84739cecf092d392ef623d5a7991af70c7cd9312a038f8b053e", kill_on_drop: false }`
[INFO] [stderr]    Compiling compiler v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: field `parent` is never read
[INFO] [stdout]  --> src/environment.rs:7:9
[INFO] [stdout]   |
[INFO] [stdout] 6 | pub struct Environment {
[INFO] [stdout]   |            ----------- field in this struct
[INFO] [stdout] 7 |     pub parent: Option<Box<Environment>>,
[INFO] [stdout]   |         ^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `Environment` 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: enum `ErrorType` is never used
[INFO] [stdout]  --> src/error.rs:2:6
[INFO] [stdout]   |
[INFO] [stdout] 2 | enum ErrorType {
[INFO] [stdout]   |      ^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `ErrorType` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Error` is never constructed
[INFO] [stdout]   --> src/error.rs:13:8
[INFO] [stdout]    |
[INFO] [stdout] 13 | struct Error {
[INFO] [stdout]    |        ^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `Error` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function `new` is never used
[INFO] [stdout]   --> src/error.rs:19:8
[INFO] [stdout]    |
[INFO] [stdout] 18 | impl Error {
[INFO] [stdout]    | ---------- associated function in this implementation
[INFO] [stdout] 19 |     fn new(error_type: ErrorType, msg: Option<String>) -> Self {
[INFO] [stdout]    |        ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `print_error` is never used
[INFO] [stdout]   --> src/error.rs:24:4
[INFO] [stdout]    |
[INFO] [stdout] 24 | fn print_error(err: &Error) {
[INFO] [stdout]    |    ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `main` is never used
[INFO] [stdout]   --> src/error.rs:43:4
[INFO] [stdout]    |
[INFO] [stdout] 43 | fn main() {
[INFO] [stdout]    |    ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `file_size` is never used
[INFO] [stdout]  --> src/file_io.rs:5:4
[INFO] [stdout]   |
[INFO] [stdout] 5 | fn file_size(file: &mut File) -> io::Result<u64> {
[INFO] [stdout]   |    ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `file_contents` is never used
[INFO] [stdout]   --> src/file_io.rs:12:4
[INFO] [stdout]    |
[INFO] [stdout] 12 | fn file_contents(path: &str) -> io::Result<String> {
[INFO] [stdout]    |    ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `main` is never used
[INFO] [stdout]   --> src/file_io.rs:22:4
[INFO] [stdout]    |
[INFO] [stdout] 22 | fn main() {
[INFO] [stdout]    |    ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `variables` is never read
[INFO] [stdout]  --> src/parser.rs:8:9
[INFO] [stdout]   |
[INFO] [stdout] 6 | pub struct ParsingContext {
[INFO] [stdout]   |            -------------- field in this struct
[INFO] [stdout] 7 |     pub types: Environment,
[INFO] [stdout] 8 |     pub variables: Environment,
[INFO] [stdout]   |         ^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `ParsingContext` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant `Program` is never constructed
[INFO] [stdout]   --> src/node.rs:12:5
[INFO] [stdout]    |
[INFO] [stdout] 4  | pub enum NodeType {
[INFO] [stdout]    |          -------- variant in this enum
[INFO] [stdout] ...
[INFO] [stdout] 12 |     Program,
[INFO] [stdout]    |     ^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `NodeType` has derived impls for the traits `Debug` and `Clone`, but these are intentionally ignored during dead code analysis
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function `compare` is never used
[INFO] [stdout]   --> src/node.rs:59:12
[INFO] [stdout]    |
[INFO] [stdout] 37 | impl Node {
[INFO] [stdout]    | --------- associated function in this implementation
[INFO] [stdout] ...
[INFO] [stdout] 59 |     pub fn compare(a: &Node, b: &Node) -> bool {
[INFO] [stdout]    |            ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.51s
[INFO] running `Command { std: "docker" "inspect" "e5ecb63209ece84739cecf092d392ef623d5a7991af70c7cd9312a038f8b053e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "e5ecb63209ece84739cecf092d392ef623d5a7991af70c7cd9312a038f8b053e", kill_on_drop: false }`
[INFO] [stdout] e5ecb63209ece84739cecf092d392ef623d5a7991af70c7cd9312a038f8b053e
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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" "-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@sha256:90999bfc7ae267e83380e433d8e61a7c072ca6729e92edbae886d3423b3a6f4c" "/opt/rustwide/cargo-home/bin/cargo" "+8de4c7234dd9b97c9d76b58671343fdbbc9a433e" "test" "--frozen" "--target" "x86_64-unknown-linux-musl", kill_on_drop: false }`
[INFO] [stdout] 1c24fda1b091a402971e3cddbcfccdaeaf071a3f5d001fd89ba562a1b9f90669
[INFO] running `Command { std: "docker" "start" "-a" "1c24fda1b091a402971e3cddbcfccdaeaf071a3f5d001fd89ba562a1b9f90669", kill_on_drop: false }`
[INFO] [stderr] warning: field `parent` is never read
[INFO] [stderr]  --> src/environment.rs:7:9
[INFO] [stderr]   |
[INFO] [stderr] 6 | pub struct Environment {
[INFO] [stderr]   |            ----------- field in this struct
[INFO] [stderr] 7 |     pub parent: Option<Box<Environment>>,
[INFO] [stderr]   |         ^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `Environment` 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: enum `ErrorType` is never used
[INFO] [stderr]  --> src/error.rs:2:6
[INFO] [stderr]   |
[INFO] [stderr] 2 | enum ErrorType {
[INFO] [stderr]   |      ^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `ErrorType` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stderr] 
[INFO] [stderr] warning: struct `Error` is never constructed
[INFO] [stderr]   --> src/error.rs:13:8
[INFO] [stderr]    |
[INFO] [stderr] 13 | struct Error {
[INFO] [stderr]    |        ^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `Error` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stderr] 
[INFO] [stderr] warning: associated function `new` is never used
[INFO] [stderr]   --> src/error.rs:19:8
[INFO] [stderr]    |
[INFO] [stderr] 18 | impl Error {
[INFO] [stderr]    | ---------- associated function in this implementation
[INFO] [stderr] 19 |     fn new(error_type: ErrorType, msg: Option<String>) -> Self {
[INFO] [stderr]    |        ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function `print_error` is never used
[INFO] [stderr]   --> src/error.rs:24:4
[INFO] [stderr]    |
[INFO] [stderr] 24 | fn print_error(err: &Error) {
[INFO] [stderr]    |    ^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function `main` is never used
[INFO] [stderr]   --> src/error.rs:43:4
[INFO] [stderr]    |
[INFO] [stderr] 43 | fn main() {
[INFO] [stderr]    |    ^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function `file_size` is never used
[INFO] [stderr]  --> src/file_io.rs:5:4
[INFO] [stderr]   |
[INFO] [stderr] 5 | fn file_size(file: &mut File) -> io::Result<u64> {
[INFO] [stderr]   |    ^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function `file_contents` is never used
[INFO] [stderr]   --> src/file_io.rs:12:4
[INFO] [stderr]    |
[INFO] [stderr] 12 | fn file_contents(path: &str) -> io::Result<String> {
[INFO] [stderr]    |    ^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function `main` is never used
[INFO] [stderr]   --> src/file_io.rs:22:4
[INFO] [stderr]    |
[INFO] [stderr] 22 | fn main() {
[INFO] [stderr]    |    ^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: field `variables` is never read
[INFO] [stderr]  --> src/parser.rs:8:9
[INFO] [stderr]   |
[INFO] [stderr] 6 | pub struct ParsingContext {
[INFO] [stderr]   |            -------------- field in this struct
[INFO] [stderr] 7 |     pub types: Environment,
[INFO] [stderr] 8 |     pub variables: Environment,
[INFO] [stderr]   |         ^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `ParsingContext` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stderr] 
[INFO] [stderr] warning: variant `Program` is never constructed
[INFO] [stderr]   --> src/node.rs:12:5
[INFO] [stderr]    |
[INFO] [stderr] 4  | pub enum NodeType {
[INFO] [stderr]    |          -------- variant in this enum
[INFO] [stderr] ...
[INFO] [stderr] 12 |     Program,
[INFO] [stderr]    |     ^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `NodeType` has derived impls for the traits `Debug` and `Clone`, but these are intentionally ignored during dead code analysis
[INFO] [stderr] 
[INFO] [stderr] warning: associated function `compare` is never used
[INFO] [stderr]   --> src/node.rs:59:12
[INFO] [stderr]    |
[INFO] [stderr] 37 | impl Node {
[INFO] [stderr]    | --------- associated function in this implementation
[INFO] [stderr] ...
[INFO] [stderr] 59 |     pub fn compare(a: &Node, b: &Node) -> bool {
[INFO] [stderr]    |            ^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: `compiler` (bin "compiler" test) generated 12 warnings
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.01s
[INFO] [stderr]      Running unittests src/main.rs (/opt/rustwide/target/x86_64-unknown-linux-musl/debug/deps/compiler-c0fc60b0f8e6f9bc)
[INFO] [stdout] 
[INFO] [stdout] running 0 tests
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "1c24fda1b091a402971e3cddbcfccdaeaf071a3f5d001fd89ba562a1b9f90669", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "1c24fda1b091a402971e3cddbcfccdaeaf071a3f5d001fd89ba562a1b9f90669", kill_on_drop: false }`
[INFO] [stdout] 1c24fda1b091a402971e3cddbcfccdaeaf071a3f5d001fd89ba562a1b9f90669