[INFO] cloning repository https://github.com/JanotLeLapin/lea
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/JanotLeLapin/lea" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FJanotLeLapin%2Flea", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FJanotLeLapin%2Flea'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] fb95a24c614e25f42eee86ef907963ed5c13bd6e
[INFO] checking JanotLeLapin/lea against try#4f260f0f20b3133d20cfb50353c0221943af5796+rustflags=-Dunmustuse_in_always_ok for pr-148577
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FJanotLeLapin%2Flea" "/workspace/builds/worker-2-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-2-tc2/source'...
[INFO] [stderr] done.
[INFO] removed /workspace/builds/worker-2-tc2/source/rust-toolchain.toml
[INFO] started tweaking git repo https://github.com/JanotLeLapin/lea
[INFO] finished tweaking git repo https://github.com/JanotLeLapin/lea
[INFO] tweaked toml for git repo https://github.com/JanotLeLapin/lea written to /workspace/builds/worker-2-tc2/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/JanotLeLapin/lea on toolchain 4f260f0f20b3133d20cfb50353c0221943af5796
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+4f260f0f20b3133d20cfb50353c0221943af5796" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/JanotLeLapin/lea 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" "+4f260f0f20b3133d20cfb50353c0221943af5796" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-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@sha256:4848fb76d95f26979359cc7e45710b1dbc8f3acb7aeedee7c460d7702230f228" "/opt/rustwide/cargo-home/bin/cargo" "+4f260f0f20b3133d20cfb50353c0221943af5796" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 6f66d26a23e479e542957aba345efd686015a8ee042b898866eb7363f334f1c1
[INFO] running `Command { std: "docker" "start" "-a" "6f66d26a23e479e542957aba345efd686015a8ee042b898866eb7363f334f1c1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "6f66d26a23e479e542957aba345efd686015a8ee042b898866eb7363f334f1c1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "6f66d26a23e479e542957aba345efd686015a8ee042b898866eb7363f334f1c1", kill_on_drop: false }`
[INFO] [stdout] 6f66d26a23e479e542957aba345efd686015a8ee042b898866eb7363f334f1c1
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-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 -Dunmustuse_in_always_ok" "-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@sha256:4848fb76d95f26979359cc7e45710b1dbc8f3acb7aeedee7c460d7702230f228" "/opt/rustwide/cargo-home/bin/cargo" "+4f260f0f20b3133d20cfb50353c0221943af5796" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 18aba801788ef36ece58aa68b64f6cd540d22175c74d379179ae83b1a8780ed5
[INFO] running `Command { std: "docker" "start" "-a" "18aba801788ef36ece58aa68b64f6cd540d22175c74d379179ae83b1a8780ed5", kill_on_drop: false }`
[INFO] [stderr]     Checking colored v2.1.0
[INFO] [stderr]    Compiling syn v2.0.48
[INFO] [stderr]    Compiling thiserror-impl v1.0.56
[INFO] [stderr]    Compiling thiserror v1.0.56
[INFO] [stderr]    Compiling pest v2.7.6
[INFO] [stderr]    Compiling pest_meta v2.7.6
[INFO] [stderr]    Compiling pest_generator v2.7.6
[INFO] [stderr]    Compiling pest_derive v2.7.6
[INFO] [stderr]     Checking leac v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: variant `InterfaceMethod` is never constructed
[INFO] [stdout]  --> src/compiler/constant_pool.rs:6:31
[INFO] [stdout]   |
[INFO] [stdout] 6 | pub enum Ref { Field, Method, InterfaceMethod }
[INFO] [stdout]   |          ---                  ^^^^^^^^^^^^^^^
[INFO] [stdout]   |          |
[INFO] [stdout]   |          variant in this enum
[INFO] [stdout]   |
[INFO] [stdout]   = note: `Ref` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout]   = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: fields `members` and `methods` are never read
[INFO] [stdout]   --> src/compiler/structure.rs:11:9
[INFO] [stdout]    |
[INFO] [stdout]  9 | pub struct Structure<'a> {
[INFO] [stdout]    |            --------- fields in this struct
[INFO] [stdout] 10 |     pub name: &'a str,
[INFO] [stdout] 11 |     pub members: HashMap<String, (Type, u8)>,
[INFO] [stdout]    |         ^^^^^^^
[INFO] [stdout] 12 |     pub methods: HashMap<String, Method<'a>>,
[INFO] [stdout]    |         ^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `Structure` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: std::result::Result<t::TypeId, Infallible>
[INFO] [stdout]    --> src/compiler/method.rs:109:32
[INFO] [stdout]     |
[INFO] [stdout] 109 |                     let t_id = pairs.next().unwrap().as_str().parse().unwrap();
[INFO] [stdout]     |                                ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: requested on the command line with `-D unmustuse-in-always-ok`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: std::result::Result<t::TypeId, Infallible>
[INFO] [stdout]    --> src/compiler/method.rs:255:31
[INFO] [stdout]     |
[INFO] [stdout] 255 |             let t = Type::new(pairs.next().unwrap().as_str().parse().unwrap(), pairs.next().is_some());
[INFO] [stdout]     |                               ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: std::result::Result<t::TypeId, Infallible>
[INFO] [stdout]    --> src/compiler/method.rs:262:31
[INFO] [stdout]     |
[INFO] [stdout] 262 |             else { (Type::new(next.as_str().parse().unwrap(), false), pairs.next().unwrap()) };
[INFO] [stdout]     |                               ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: std::result::Result<t::TypeId, Infallible>
[INFO] [stdout]   --> src/compiler/structure.rs:23:31
[INFO] [stdout]    |
[INFO] [stdout] 23 |             let t = Type::new(pairs.next().unwrap().as_str().parse().unwrap(), pairs.next().is_some());
[INFO] [stdout]    |                               ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: std::result::Result<t::TypeId, Infallible>
[INFO] [stdout]   --> src/compiler/t.rs:12:53
[INFO] [stdout]    |
[INFO] [stdout] 12 |       fn from_str(s: &str) -> Result<Self, Self::Err> {
[INFO] [stdout]    |  _____________________________________________________^
[INFO] [stdout] 13 | |         use TypeId::*;
[INFO] [stdout] 14 | |
[INFO] [stdout] 15 | |         Ok(match s {
[INFO] [stdout] ...  |
[INFO] [stdout] 23 | |         })
[INFO] [stdout] 24 | |     }
[INFO] [stdout]    | |_____^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: std::result::Result<t::TypeId, Infallible>
[INFO] [stdout]   --> src/compiler/t.rs:15:9
[INFO] [stdout]    |
[INFO] [stdout] 15 | /         Ok(match s {
[INFO] [stdout] 16 | |             "i8" => I8,
[INFO] [stdout] 17 | |             "i16" => I16,
[INFO] [stdout] 18 | |             "i32" => I32,
[INFO] [stdout] ...  |
[INFO] [stdout] 22 | |             s => Other(s.to_string()),
[INFO] [stdout] 23 | |         })
[INFO] [stdout]    | |__________^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `leac` (bin "leac" test) due to 6 previous errors; 2 warnings emitted
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stdout] warning: variant `InterfaceMethod` is never constructed
[INFO] [stdout]  --> src/compiler/constant_pool.rs:6:31
[INFO] [stdout]   |
[INFO] [stdout] 6 | pub enum Ref { Field, Method, InterfaceMethod }
[INFO] [stdout]   |          ---                  ^^^^^^^^^^^^^^^
[INFO] [stdout]   |          |
[INFO] [stdout]   |          variant in this enum
[INFO] [stdout]   |
[INFO] [stdout]   = note: `Ref` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout]   = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: fields `members` and `methods` are never read
[INFO] [stdout]   --> src/compiler/structure.rs:11:9
[INFO] [stdout]    |
[INFO] [stdout]  9 | pub struct Structure<'a> {
[INFO] [stdout]    |            --------- fields in this struct
[INFO] [stdout] 10 |     pub name: &'a str,
[INFO] [stdout] 11 |     pub members: HashMap<String, (Type, u8)>,
[INFO] [stdout]    |         ^^^^^^^
[INFO] [stdout] 12 |     pub methods: HashMap<String, Method<'a>>,
[INFO] [stdout]    |         ^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `Structure` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: std::result::Result<t::TypeId, Infallible>
[INFO] [stdout]    --> src/compiler/method.rs:109:32
[INFO] [stdout]     |
[INFO] [stdout] 109 |                     let t_id = pairs.next().unwrap().as_str().parse().unwrap();
[INFO] [stdout]     |                                ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: requested on the command line with `-D unmustuse-in-always-ok`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: std::result::Result<t::TypeId, Infallible>
[INFO] [stdout]    --> src/compiler/method.rs:255:31
[INFO] [stdout]     |
[INFO] [stdout] 255 |             let t = Type::new(pairs.next().unwrap().as_str().parse().unwrap(), pairs.next().is_some());
[INFO] [stdout]     |                               ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: std::result::Result<t::TypeId, Infallible>
[INFO] [stdout]    --> src/compiler/method.rs:262:31
[INFO] [stdout]     |
[INFO] [stdout] 262 |             else { (Type::new(next.as_str().parse().unwrap(), false), pairs.next().unwrap()) };
[INFO] [stdout]     |                               ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: std::result::Result<t::TypeId, Infallible>
[INFO] [stdout]   --> src/compiler/structure.rs:23:31
[INFO] [stdout]    |
[INFO] [stdout] 23 |             let t = Type::new(pairs.next().unwrap().as_str().parse().unwrap(), pairs.next().is_some());
[INFO] [stdout]    |                               ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: std::result::Result<t::TypeId, Infallible>
[INFO] [stdout]   --> src/compiler/t.rs:12:53
[INFO] [stdout]    |
[INFO] [stdout] 12 |       fn from_str(s: &str) -> Result<Self, Self::Err> {
[INFO] [stdout]    |  _____________________________________________________^
[INFO] [stdout] 13 | |         use TypeId::*;
[INFO] [stdout] 14 | |
[INFO] [stdout] 15 | |         Ok(match s {
[INFO] [stdout] ...  |
[INFO] [stdout] 23 | |         })
[INFO] [stdout] 24 | |     }
[INFO] [stdout]    | |_____^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: std::result::Result<t::TypeId, Infallible>
[INFO] [stdout]   --> src/compiler/t.rs:15:9
[INFO] [stdout]    |
[INFO] [stdout] 15 | /         Ok(match s {
[INFO] [stdout] 16 | |             "i8" => I8,
[INFO] [stdout] 17 | |             "i16" => I16,
[INFO] [stdout] 18 | |             "i32" => I32,
[INFO] [stdout] ...  |
[INFO] [stdout] 22 | |             s => Other(s.to_string()),
[INFO] [stdout] 23 | |         })
[INFO] [stdout]    | |__________^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `leac` (bin "leac") due to 6 previous errors; 2 warnings emitted
[INFO] running `Command { std: "docker" "inspect" "18aba801788ef36ece58aa68b64f6cd540d22175c74d379179ae83b1a8780ed5", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "18aba801788ef36ece58aa68b64f6cd540d22175c74d379179ae83b1a8780ed5", kill_on_drop: false }`
[INFO] [stdout] 18aba801788ef36ece58aa68b64f6cd540d22175c74d379179ae83b1a8780ed5