[INFO] cloning repository https://github.com/Adotweb/lambda
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/Adotweb/lambda" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FAdotweb%2Flambda", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FAdotweb%2Flambda'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 6563a43cc152772f2f7d1555331feed5358fb0dc
[INFO] checking Adotweb/lambda against master#3129d37ef7075ee3cbaa3d6cbe1b5794f67192b0 for pr-143164
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FAdotweb%2Flambda" "/workspace/builds/worker-1-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-1-tc2/source'...
[INFO] [stderr] done.
[INFO] started tweaking git repo https://github.com/Adotweb/lambda
[INFO] finished tweaking git repo https://github.com/Adotweb/lambda
[INFO] tweaked toml for git repo https://github.com/Adotweb/lambda written to /workspace/builds/worker-1-tc2/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/Adotweb/lambda on toolchain 3129d37ef7075ee3cbaa3d6cbe1b5794f67192b0
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+3129d37ef7075ee3cbaa3d6cbe1b5794f67192b0" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/Adotweb/lambda 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" "+3129d37ef7075ee3cbaa3d6cbe1b5794f67192b0" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-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:cf8efcab8866f2cf4285301c7418e2f4f2a9b088c91ba69c40d5b659f81557f7" "/opt/rustwide/cargo-home/bin/cargo" "+3129d37ef7075ee3cbaa3d6cbe1b5794f67192b0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] bd30ebb066005be6cc1e5f0bf368290ccfcc1c4acf41794531be787aacc8ab48
[INFO] running `Command { std: "docker" "start" "-a" "bd30ebb066005be6cc1e5f0bf368290ccfcc1c4acf41794531be787aacc8ab48", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "bd30ebb066005be6cc1e5f0bf368290ccfcc1c4acf41794531be787aacc8ab48", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "bd30ebb066005be6cc1e5f0bf368290ccfcc1c4acf41794531be787aacc8ab48", kill_on_drop: false }`
[INFO] [stdout] bd30ebb066005be6cc1e5f0bf368290ccfcc1c4acf41794531be787aacc8ab48
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-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:cf8efcab8866f2cf4285301c7418e2f4f2a9b088c91ba69c40d5b659f81557f7" "/opt/rustwide/cargo-home/bin/cargo" "+3129d37ef7075ee3cbaa3d6cbe1b5794f67192b0" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 6bf9811e52ba84045ab5b93c36a3feb9d56eb4c9127f10c8715ae4b3325a50d9
[INFO] running `Command { std: "docker" "start" "-a" "6bf9811e52ba84045ab5b93c36a3feb9d56eb4c9127f10c8715ae4b3325a50d9", kill_on_drop: false }`
[INFO] [stderr]     Checking lambda v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unreachable pattern
[INFO] [stdout]   --> src/parser.rs:70:13
[INFO] [stdout]    |
[INFO] [stdout] 70 |             _ => String::new(),
[INFO] [stdout]    |             ^ no value can reach this
[INFO] [stdout]    |
[INFO] [stdout] note: multiple earlier patterns match some of the same values
[INFO] [stdout]   --> src/parser.rs:70:13
[INFO] [stdout]    |
[INFO] [stdout] 44 |             Self::Global { list } => {
[INFO] [stdout]    |             --------------------- matches some of the same values
[INFO] [stdout] ...
[INFO] [stdout] 54 |             Self::App { left, right } => {
[INFO] [stdout]    |             ------------------------- matches some of the same values
[INFO] [stdout] ...
[INFO] [stdout] 57 |             Self::Grp { inner } => {
[INFO] [stdout]    |             ------------------- matches some of the same values
[INFO] [stdout] ...
[INFO] [stdout] 60 |             Self::Def { argument, body } => {
[INFO] [stdout]    |             ---------------------------- matches some of the same values
[INFO] [stdout] ...
[INFO] [stdout] 70 |             _ => String::new(),
[INFO] [stdout]    |             ^ ...and 4 other patterns collectively make this unreachable
[INFO] [stdout]    = note: `#[warn(unreachable_patterns)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `expr_num`
[INFO] [stdout]   --> src/parser.rs:86:13
[INFO] [stdout]    |
[INFO] [stdout] 86 |     let mut expr_num = 0;
[INFO] [stdout]    |             ^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_expr_num`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `token`
[INFO] [stdout]   --> src/parser.rs:88:20
[INFO] [stdout]    |
[INFO] [stdout] 88 |     while let Some(token) = tokens.get(current_index) {
[INFO] [stdout]    |                    ^^^^^ help: if this is intentional, prefix it with an underscore: `_token`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/parser.rs:86:9
[INFO] [stdout]    |
[INFO] [stdout] 86 |     let mut expr_num = 0;
[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: method `link` is never used
[INFO] [stdout]   --> src/eval.rs:19:8
[INFO] [stdout]    |
[INFO] [stdout] 14 | impl Environment {
[INFO] [stdout]    | ---------------- method in this implementation
[INFO] [stdout] ...
[INFO] [stdout] 19 |     fn link(&self, enclosing: Environment) -> Rc<RefCell<Self>> {
[INFO] [stdout]    |        ^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant `EOF` is never constructed
[INFO] [stdout]   --> src/lexer.rs:17:5
[INFO] [stdout]    |
[INFO] [stdout] 2  | pub enum TokenType {
[INFO] [stdout]    |          --------- variant in this enum
[INFO] [stdout] ...
[INFO] [stdout] 17 |     EOF,
[INFO] [stdout]    |     ^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `TokenType` has derived impls for the traits `Clone` and `Debug`, but these are intentionally ignored during dead code analysis
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `0` is never read
[INFO] [stdout]   --> src/parser.rs:77:23
[INFO] [stdout]    |
[INFO] [stdout] 77 | pub struct VarCounter(pub HashMap<String, usize>);
[INFO] [stdout]    |            ---------- ^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |            |
[INFO] [stdout]    |            field in this struct
[INFO] [stdout]    |
[INFO] [stdout]    = help: consider removing this field
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unreachable pattern
[INFO] [stdout]   --> src/parser.rs:70:13
[INFO] [stdout]    |
[INFO] [stdout] 70 |             _ => String::new(),
[INFO] [stdout]    |             ^ no value can reach this
[INFO] [stdout]    |
[INFO] [stdout] note: multiple earlier patterns match some of the same values
[INFO] [stdout]   --> src/parser.rs:70:13
[INFO] [stdout]    |
[INFO] [stdout] 44 |             Self::Global { list } => {
[INFO] [stdout]    |             --------------------- matches some of the same values
[INFO] [stdout] ...
[INFO] [stdout] 54 |             Self::App { left, right } => {
[INFO] [stdout]    |             ------------------------- matches some of the same values
[INFO] [stdout] ...
[INFO] [stdout] 57 |             Self::Grp { inner } => {
[INFO] [stdout]    |             ------------------- matches some of the same values
[INFO] [stdout] ...
[INFO] [stdout] 60 |             Self::Def { argument, body } => {
[INFO] [stdout]    |             ---------------------------- matches some of the same values
[INFO] [stdout] ...
[INFO] [stdout] 70 |             _ => String::new(),
[INFO] [stdout]    |             ^ ...and 4 other patterns collectively make this unreachable
[INFO] [stdout]    = note: `#[warn(unreachable_patterns)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `expr_num`
[INFO] [stdout]   --> src/parser.rs:86:13
[INFO] [stdout]    |
[INFO] [stdout] 86 |     let mut expr_num = 0;
[INFO] [stdout]    |             ^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_expr_num`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `token`
[INFO] [stdout]   --> src/parser.rs:88:20
[INFO] [stdout]    |
[INFO] [stdout] 88 |     while let Some(token) = tokens.get(current_index) {
[INFO] [stdout]    |                    ^^^^^ help: if this is intentional, prefix it with an underscore: `_token`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/parser.rs:86:9
[INFO] [stdout]    |
[INFO] [stdout] 86 |     let mut expr_num = 0;
[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: method `link` is never used
[INFO] [stdout]   --> src/eval.rs:19:8
[INFO] [stdout]    |
[INFO] [stdout] 14 | impl Environment {
[INFO] [stdout]    | ---------------- method in this implementation
[INFO] [stdout] ...
[INFO] [stdout] 19 |     fn link(&self, enclosing: Environment) -> Rc<RefCell<Self>> {
[INFO] [stdout]    |        ^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant `EOF` is never constructed
[INFO] [stdout]   --> src/lexer.rs:17:5
[INFO] [stdout]    |
[INFO] [stdout] 2  | pub enum TokenType {
[INFO] [stdout]    |          --------- variant in this enum
[INFO] [stdout] ...
[INFO] [stdout] 17 |     EOF,
[INFO] [stdout]    |     ^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `TokenType` has derived impls for the traits `Clone` and `Debug`, but these are intentionally ignored during dead code analysis
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `0` is never read
[INFO] [stdout]   --> src/parser.rs:77:23
[INFO] [stdout]    |
[INFO] [stdout] 77 | pub struct VarCounter(pub HashMap<String, usize>);
[INFO] [stdout]    |            ---------- ^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |            |
[INFO] [stdout]    |            field in this struct
[INFO] [stdout]    |
[INFO] [stdout]    = help: consider removing this field
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 0.23s
[INFO] running `Command { std: "docker" "inspect" "6bf9811e52ba84045ab5b93c36a3feb9d56eb4c9127f10c8715ae4b3325a50d9", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "6bf9811e52ba84045ab5b93c36a3feb9d56eb4c9127f10c8715ae4b3325a50d9", kill_on_drop: false }`
[INFO] [stdout] 6bf9811e52ba84045ab5b93c36a3feb9d56eb4c9127f10c8715ae4b3325a50d9
