[INFO] cloning repository https://github.com/migouche/lambda-calculus-compiler
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/migouche/lambda-calculus-compiler" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fmigouche%2Flambda-calculus-compiler", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fmigouche%2Flambda-calculus-compiler'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] e6d3fd66d1d41ba9c60ee65b1a2d61b5aca8f285
[INFO] checking migouche/lambda-calculus-compiler against master#ecb170afc878648c3ae355dbd596c8e4b6f7ebdc for pr-139022
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fmigouche%2Flambda-calculus-compiler" "/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/migouche/lambda-calculus-compiler on toolchain ecb170afc878648c3ae355dbd596c8e4b6f7ebdc
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+ecb170afc878648c3ae355dbd596c8e4b6f7ebdc" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/migouche/lambda-calculus-compiler
[INFO] finished tweaking git repo https://github.com/migouche/lambda-calculus-compiler
[INFO] tweaked toml for git repo https://github.com/migouche/lambda-calculus-compiler written to /workspace/builds/worker-3-tc1/source/Cargo.toml
[INFO] crate git repo https://github.com/migouche/lambda-calculus-compiler 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" "+ecb170afc878648c3ae355dbd596c8e4b6f7ebdc" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[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@sha256:4b26683ee3c49f365255c425c23003cbf4366de097804722c29c5bbbee3624d2" "/opt/rustwide/cargo-home/bin/cargo" "+ecb170afc878648c3ae355dbd596c8e4b6f7ebdc" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 17c35bc855e1be80adc6eb04dd6e3d6e06e1257c556e5cc63d12aa1168c7eaef
[INFO] running `Command { std: "docker" "start" "-a" "17c35bc855e1be80adc6eb04dd6e3d6e06e1257c556e5cc63d12aa1168c7eaef", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "17c35bc855e1be80adc6eb04dd6e3d6e06e1257c556e5cc63d12aa1168c7eaef", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "17c35bc855e1be80adc6eb04dd6e3d6e06e1257c556e5cc63d12aa1168c7eaef", kill_on_drop: false }`
[INFO] [stdout] 17c35bc855e1be80adc6eb04dd6e3d6e06e1257c556e5cc63d12aa1168c7eaef
[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" "-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@sha256:4b26683ee3c49f365255c425c23003cbf4366de097804722c29c5bbbee3624d2" "/opt/rustwide/cargo-home/bin/cargo" "+ecb170afc878648c3ae355dbd596c8e4b6f7ebdc" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 5119233d2165ec0474ad0dde375dba4e6e83259bb086380c06e316992013def4
[INFO] running `Command { std: "docker" "start" "-a" "5119233d2165ec0474ad0dde375dba4e6e83259bb086380c06e316992013def4", kill_on_drop: false }`
[INFO] [stderr]     Checking lambda-compiler v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `std::str::Split`
[INFO] [stdout]  --> src/keepsplit.rs:1:5
[INFO] [stdout]   |
[INFO] [stdout] 1 | use std::str::Split;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::str::Split`
[INFO] [stdout]  --> src/keepsplit.rs:1:5
[INFO] [stdout]   |
[INFO] [stdout] 1 | use std::str::Split;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: enum `Value` is never used
[INFO] [stdout]  --> src/ast.rs:3:17
[INFO] [stdout]   |
[INFO] [stdout] 3 | pub(crate) enum Value {
[INFO] [stdout]   |                 ^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `AST` is never constructed
[INFO] [stdout]  --> src/ast.rs:9:19
[INFO] [stdout]   |
[INFO] [stdout] 9 | pub(crate) struct AST {
[INFO] [stdout]   |                   ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated items `new` and `add` are never used
[INFO] [stdout]   --> src/ast.rs:32:12
[INFO] [stdout]    |
[INFO] [stdout] 31 | impl AST {
[INFO] [stdout]    | -------- associated items in this implementation
[INFO] [stdout] 32 |     pub fn new() -> AST {
[INFO] [stdout]    |            ^^^
[INFO] [stdout] ...
[INFO] [stdout] 38 |     pub fn add(&mut self, Value: Value) {
[INFO] [stdout]    |            ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: enum `ParserError` is never used
[INFO] [stdout]  --> src/parser.rs:5:6
[INFO] [stdout]   |
[INFO] [stdout] 5 | enum ParserError {
[INFO] [stdout]   |      ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Parser` is never constructed
[INFO] [stdout]   --> src/parser.rs:11:8
[INFO] [stdout]    |
[INFO] [stdout] 11 | struct Parser {
[INFO] [stdout]    |        ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated items `new`, `parse_block`, and `parse` are never used
[INFO] [stdout]   --> src/parser.rs:16:8
[INFO] [stdout]    |
[INFO] [stdout] 15 | impl Parser {
[INFO] [stdout]    | ----------- associated items in this implementation
[INFO] [stdout] 16 |     fn new(path: &str) -> Self {
[INFO] [stdout]    |        ^^^
[INFO] [stdout] ...
[INFO] [stdout] 40 |     fn parse_block(&mut self) -> Result<Value, ParserError> {
[INFO] [stdout]    |        ^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 44 |     fn parse(&mut self) -> AST {
[INFO] [stdout]    |        ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable `Value` should have a snake case name
[INFO] [stdout]   --> src/ast.rs:38:27
[INFO] [stdout]    |
[INFO] [stdout] 38 |     pub fn add(&mut self, Value: Value) {
[INFO] [stdout]    |                           ^^^^^ help: convert the identifier to snake case (notice the capitalization): `value`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(non_snake_case)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: enum `Value` is never used
[INFO] [stdout]  --> src/ast.rs:3:17
[INFO] [stdout]   |
[INFO] [stdout] 3 | pub(crate) enum Value {
[INFO] [stdout]   |                 ^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `AST` is never constructed
[INFO] [stdout]  --> src/ast.rs:9:19
[INFO] [stdout]   |
[INFO] [stdout] 9 | pub(crate) struct AST {
[INFO] [stdout]   |                   ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated items `new` and `add` are never used
[INFO] [stdout]   --> src/ast.rs:32:12
[INFO] [stdout]    |
[INFO] [stdout] 31 | impl AST {
[INFO] [stdout]    | -------- associated items in this implementation
[INFO] [stdout] 32 |     pub fn new() -> AST {
[INFO] [stdout]    |            ^^^
[INFO] [stdout] ...
[INFO] [stdout] 38 |     pub fn add(&mut self, Value: Value) {
[INFO] [stdout]    |            ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: enum `ParserError` is never used
[INFO] [stdout]  --> src/parser.rs:5:6
[INFO] [stdout]   |
[INFO] [stdout] 5 | enum ParserError {
[INFO] [stdout]   |      ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Parser` is never constructed
[INFO] [stdout]   --> src/parser.rs:11:8
[INFO] [stdout]    |
[INFO] [stdout] 11 | struct Parser {
[INFO] [stdout]    |        ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated items `new`, `parse_block`, and `parse` are never used
[INFO] [stdout]   --> src/parser.rs:16:8
[INFO] [stdout]    |
[INFO] [stdout] 15 | impl Parser {
[INFO] [stdout]    | ----------- associated items in this implementation
[INFO] [stdout] 16 |     fn new(path: &str) -> Self {
[INFO] [stdout]    |        ^^^
[INFO] [stdout] ...
[INFO] [stdout] 40 |     fn parse_block(&mut self) -> Result<Value, ParserError> {
[INFO] [stdout]    |        ^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 44 |     fn parse(&mut self) -> AST {
[INFO] [stdout]    |        ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable `Value` should have a snake case name
[INFO] [stdout]   --> src/ast.rs:38:27
[INFO] [stdout]    |
[INFO] [stdout] 38 |     pub fn add(&mut self, Value: Value) {
[INFO] [stdout]    |                           ^^^^^ help: convert the identifier to snake case (notice the capitalization): `value`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(non_snake_case)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 0.16s
[INFO] running `Command { std: "docker" "inspect" "5119233d2165ec0474ad0dde375dba4e6e83259bb086380c06e316992013def4", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "5119233d2165ec0474ad0dde375dba4e6e83259bb086380c06e316992013def4", kill_on_drop: false }`
[INFO] [stdout] 5119233d2165ec0474ad0dde375dba4e6e83259bb086380c06e316992013def4