[INFO] cloning repository https://github.com/Applimu/Metallic
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/Applimu/Metallic" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FApplimu%2FMetallic", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FApplimu%2FMetallic'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] dd492f0f2575a5e1da1b74b6fd58ff7d10ea61fe
[INFO] checking Applimu/Metallic against try#5ef65a4ed75279dc1b7a26cedc27293a9f4ca8db for pr-143717
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FApplimu%2FMetallic" "/workspace/builds/worker-5-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-5-tc2/source'...
[INFO] [stderr] done.
[INFO] started tweaking git repo https://github.com/Applimu/Metallic
[INFO] finished tweaking git repo https://github.com/Applimu/Metallic
[INFO] tweaked toml for git repo https://github.com/Applimu/Metallic written to /workspace/builds/worker-5-tc2/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/Applimu/Metallic on toolchain 5ef65a4ed75279dc1b7a26cedc27293a9f4ca8db
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+5ef65a4ed75279dc1b7a26cedc27293a9f4ca8db" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/Applimu/Metallic 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" "+5ef65a4ed75279dc1b7a26cedc27293a9f4ca8db" "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@sha256:90999bfc7ae267e83380e433d8e61a7c072ca6729e92edbae886d3423b3a6f4c" "/opt/rustwide/cargo-home/bin/cargo" "+5ef65a4ed75279dc1b7a26cedc27293a9f4ca8db" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] bee62cdda3635df547dc1da6763c11ede86ca53bc26a8dd2a988410dff7616c0
[INFO] running `Command { std: "docker" "start" "-a" "bee62cdda3635df547dc1da6763c11ede86ca53bc26a8dd2a988410dff7616c0", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "bee62cdda3635df547dc1da6763c11ede86ca53bc26a8dd2a988410dff7616c0", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "bee62cdda3635df547dc1da6763c11ede86ca53bc26a8dd2a988410dff7616c0", kill_on_drop: false }`
[INFO] [stdout] bee62cdda3635df547dc1da6763c11ede86ca53bc26a8dd2a988410dff7616c0
[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@sha256:90999bfc7ae267e83380e433d8e61a7c072ca6729e92edbae886d3423b3a6f4c" "/opt/rustwide/cargo-home/bin/cargo" "+5ef65a4ed75279dc1b7a26cedc27293a9f4ca8db" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] ad02111041347175ce1eb23bc335a03130417b93309a5d832f5b3f42a7150010
[INFO] running `Command { std: "docker" "start" "-a" "ad02111041347175ce1eb23bc335a03130417b93309a5d832f5b3f42a7150010", kill_on_drop: false }`
[INFO] [stderr]     Checking metallic v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `Val`
[INFO] [stdout]  --> src/type_checking.rs:5:38
[INFO] [stdout]   |
[INFO] [stdout] 5 |     runtime::{Context, RuntimeError, Val, interpret},
[INFO] [stdout]   |                                      ^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `Val`
[INFO] [stdout]  --> src/type_checking.rs:5:38
[INFO] [stdout]   |
[INFO] [stdout] 5 |     runtime::{Context, RuntimeError, Val, interpret},
[INFO] [stdout]   |                                      ^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `t`
[INFO] [stdout]    --> src/runtime.rs:189:25
[INFO] [stdout]     |
[INFO] [stdout] 189 |                     let t = args[0].get_as_type()?;
[INFO] [stdout]     |                         ^ help: if this is intentional, prefix it with an underscore: `_t`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `f`
[INFO] [stdout]    --> src/runtime.rs:190:25
[INFO] [stdout]     |
[INFO] [stdout] 190 |                     let f = args[1].get_as_fn()?;
[INFO] [stdout]     |                         ^ help: if this is intentional, prefix it with an underscore: `_f`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `f`
[INFO] [stdout]    --> src/runtime.rs:285:56
[INFO] [stdout]     |
[INFO] [stdout] 285 |             Val::Function(Function::PartialApplication(f, args)) => {
[INFO] [stdout]     |                                                        ^ help: if this is intentional, prefix it with an underscore: `_f`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `args`
[INFO] [stdout]    --> src/runtime.rs:285:59
[INFO] [stdout]     |
[INFO] [stdout] 285 |             Val::Function(Function::PartialApplication(f, args)) => {
[INFO] [stdout]     |                                                           ^^^^ help: if this is intentional, prefix it with an underscore: `_args`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `names` is never read
[INFO] [stdout]    --> src/main.rs:267:5
[INFO] [stdout]     |
[INFO] [stdout] 266 | pub struct Program {
[INFO] [stdout]     |            ------- field in this struct
[INFO] [stdout] 267 |     names: Vec<String>,
[INFO] [stdout]     |     ^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `run_io_action` is never used
[INFO] [stdout]   --> src/runtime.rs:39:4
[INFO] [stdout]    |
[INFO] [stdout] 39 | fn run_io_action(ctx: &mut Context, action: &mut IOAction) -> Result<(), RuntimeError> {
[INFO] [stdout]    |    ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `get_as_pair` is never used
[INFO] [stdout]    --> src/runtime.rs:265:8
[INFO] [stdout]     |
[INFO] [stdout] 213 | impl Val {
[INFO] [stdout]     | -------- method in this implementation
[INFO] [stdout] ...
[INFO] [stdout] 265 |     fn get_as_pair(&self) -> Result<(Rc<Val>, Rc<Val>), RuntimeError> {
[INFO] [stdout]     |        ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `check_wellformed_types` is never used
[INFO] [stdout]   --> src/type_checking.rs:57:8
[INFO] [stdout]    |
[INFO] [stdout] 57 | pub fn check_wellformed_types(
[INFO] [stdout]    |        ^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]   --> src/type_checking.rs:39:17
[INFO] [stdout]    |
[INFO] [stdout] 39 |                 check_type(ctx, type_expr, &Type::Type);
[INFO] [stdout]    |                 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout]    = note: `#[warn(unused_must_use)]` on by default
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]    |
[INFO] [stdout] 39 |                 let _ = check_type(ctx, type_expr, &Type::Type);
[INFO] [stdout]    |                 +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `t`
[INFO] [stdout]    --> src/runtime.rs:189:25
[INFO] [stdout]     |
[INFO] [stdout] 189 |                     let t = args[0].get_as_type()?;
[INFO] [stdout]     |                         ^ help: if this is intentional, prefix it with an underscore: `_t`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `f`
[INFO] [stdout]    --> src/runtime.rs:190:25
[INFO] [stdout]     |
[INFO] [stdout] 190 |                     let f = args[1].get_as_fn()?;
[INFO] [stdout]     |                         ^ help: if this is intentional, prefix it with an underscore: `_f`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `f`
[INFO] [stdout]    --> src/runtime.rs:285:56
[INFO] [stdout]     |
[INFO] [stdout] 285 |             Val::Function(Function::PartialApplication(f, args)) => {
[INFO] [stdout]     |                                                        ^ help: if this is intentional, prefix it with an underscore: `_f`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `args`
[INFO] [stdout]    --> src/runtime.rs:285:59
[INFO] [stdout]     |
[INFO] [stdout] 285 |             Val::Function(Function::PartialApplication(f, args)) => {
[INFO] [stdout]     |                                                           ^^^^ help: if this is intentional, prefix it with an underscore: `_args`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `run_io_action` is never used
[INFO] [stdout]   --> src/runtime.rs:39:4
[INFO] [stdout]    |
[INFO] [stdout] 39 | fn run_io_action(ctx: &mut Context, action: &mut IOAction) -> Result<(), RuntimeError> {
[INFO] [stdout]    |    ^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `get_as_pair` is never used
[INFO] [stdout]    --> src/runtime.rs:265:8
[INFO] [stdout]     |
[INFO] [stdout] 213 | impl Val {
[INFO] [stdout]     | -------- method in this implementation
[INFO] [stdout] ...
[INFO] [stdout] 265 |     fn get_as_pair(&self) -> Result<(Rc<Val>, Rc<Val>), RuntimeError> {
[INFO] [stdout]     |        ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `check_wellformed_types` is never used
[INFO] [stdout]   --> src/type_checking.rs:57:8
[INFO] [stdout]    |
[INFO] [stdout] 57 | pub fn check_wellformed_types(
[INFO] [stdout]    |        ^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]   --> src/type_checking.rs:39:17
[INFO] [stdout]    |
[INFO] [stdout] 39 |                 check_type(ctx, type_expr, &Type::Type);
[INFO] [stdout]    |                 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout]    = note: `#[warn(unused_must_use)]` on by default
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]    |
[INFO] [stdout] 39 |                 let _ = check_type(ctx, type_expr, &Type::Type);
[INFO] [stdout]    |                 +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 0.77s
[INFO] running `Command { std: "docker" "inspect" "ad02111041347175ce1eb23bc335a03130417b93309a5d832f5b3f42a7150010", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "ad02111041347175ce1eb23bc335a03130417b93309a5d832f5b3f42a7150010", kill_on_drop: false }`
[INFO] [stdout] ad02111041347175ce1eb23bc335a03130417b93309a5d832f5b3f42a7150010
