[INFO] cloning repository https://github.com/senicko/crab
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/senicko/crab" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fsenicko%2Fcrab", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fsenicko%2Fcrab'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 1d8ed332cfbaba2e1bafd7e5d2cc44d263db467a
[INFO] checking senicko/crab against try#6db1a6a7ebb2ad243051f3ff949f987dd70cde2b+rustflags=-Dreturn-local-variable-ptr for pr-134218
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fsenicko%2Fcrab" "/workspace/builds/worker-6-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-6-tc2/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/senicko/crab on toolchain 6db1a6a7ebb2ad243051f3ff949f987dd70cde2b
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+6db1a6a7ebb2ad243051f3ff949f987dd70cde2b" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/senicko/crab
[INFO] finished tweaking git repo https://github.com/senicko/crab
[INFO] tweaked toml for git repo https://github.com/senicko/crab written to /workspace/builds/worker-6-tc2/source/Cargo.toml
[INFO] crate git repo https://github.com/senicko/crab 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" "+6db1a6a7ebb2ad243051f3ff949f987dd70cde2b" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-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:f3a9d4ad9d972b27faf3965f35b62e55ba32bbce8f20bc8fe909558a86702fde" "/opt/rustwide/cargo-home/bin/cargo" "+6db1a6a7ebb2ad243051f3ff949f987dd70cde2b" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] d282d71b5fe38f8af9ed55ea78a37d3185d4db272b91010f9621aba1426c031c
[INFO] running `Command { std: "docker" "start" "-a" "d282d71b5fe38f8af9ed55ea78a37d3185d4db272b91010f9621aba1426c031c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "d282d71b5fe38f8af9ed55ea78a37d3185d4db272b91010f9621aba1426c031c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "d282d71b5fe38f8af9ed55ea78a37d3185d4db272b91010f9621aba1426c031c", kill_on_drop: false }`
[INFO] [stdout] d282d71b5fe38f8af9ed55ea78a37d3185d4db272b91010f9621aba1426c031c
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-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 -Dreturn-local-variable-ptr" "-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:f3a9d4ad9d972b27faf3965f35b62e55ba32bbce8f20bc8fe909558a86702fde" "/opt/rustwide/cargo-home/bin/cargo" "+6db1a6a7ebb2ad243051f3ff949f987dd70cde2b" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 6e4a982825b009b2760e088f00f9ddbea9d06c1eb72f7f2133f06d179fc66c01
[INFO] running `Command { std: "docker" "start" "-a" "6e4a982825b009b2760e088f00f9ddbea9d06c1eb72f7f2133f06d179fc66c01", kill_on_drop: false }`
[INFO] [stderr]     Checking crab v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/lexer.rs:76:13
[INFO] [stdout]    |
[INFO] [stdout] 76 |         let mut lexer = Self {
[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: variable does not need to be mutable
[INFO] [stdout]   --> src/lexer.rs:76:13
[INFO] [stdout]    |
[INFO] [stdout] 76 |         let mut lexer = Self {
[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: multiple variants are never constructed
[INFO] [stdout]   --> src/lexer.rs:4:5
[INFO] [stdout]    |
[INFO] [stdout] 2  | pub enum TokenType {
[INFO] [stdout]    |          --------- variants in this enum
[INFO] [stdout] 3  |     // Identifiers + literals
[INFO] [stdout] 4  |     Identifier(String),
[INFO] [stdout]    |     ^^^^^^^^^^
[INFO] [stdout] 5  |     Int(i64),
[INFO] [stdout]    |     ^^^
[INFO] [stdout] ...
[INFO] [stdout] 20 |     Fn,
[INFO] [stdout]    |     ^^
[INFO] [stdout] 21 |     Let,
[INFO] [stdout]    |     ^^^
[INFO] [stdout] 22 |     True,
[INFO] [stdout]    |     ^^^^
[INFO] [stdout] 23 |     False,
[INFO] [stdout]    |     ^^^^^
[INFO] [stdout] 24 |     If,
[INFO] [stdout]    |     ^^
[INFO] [stdout] 25 |     Else,
[INFO] [stdout]    |     ^^^^
[INFO] [stdout] 26 |     Return,
[INFO] [stdout]    |     ^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 29 |     Comma,
[INFO] [stdout]    |     ^^^^^
[INFO] [stdout] 30 |     Semicolon,
[INFO] [stdout]    |     ^^^^^^^^^
[INFO] [stdout] 31 |     LParen,
[INFO] [stdout]    |     ^^^^^^
[INFO] [stdout] 32 |     RParen,
[INFO] [stdout]    |     ^^^^^^
[INFO] [stdout] 33 |     LBrace,
[INFO] [stdout]    |     ^^^^^^
[INFO] [stdout] 34 |     RBrace,
[INFO] [stdout]    |     ^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `TokenType` 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: multiple variants are never constructed
[INFO] [stdout]   --> src/lexer.rs:4:5
[INFO] [stdout]    |
[INFO] [stdout] 2  | pub enum TokenType {
[INFO] [stdout]    |          --------- variants in this enum
[INFO] [stdout] 3  |     // Identifiers + literals
[INFO] [stdout] 4  |     Identifier(String),
[INFO] [stdout]    |     ^^^^^^^^^^
[INFO] [stdout] 5  |     Int(i64),
[INFO] [stdout]    |     ^^^
[INFO] [stdout] ...
[INFO] [stdout] 20 |     Fn,
[INFO] [stdout]    |     ^^
[INFO] [stdout] 21 |     Let,
[INFO] [stdout]    |     ^^^
[INFO] [stdout] 22 |     True,
[INFO] [stdout]    |     ^^^^
[INFO] [stdout] 23 |     False,
[INFO] [stdout]    |     ^^^^^
[INFO] [stdout] 24 |     If,
[INFO] [stdout]    |     ^^
[INFO] [stdout] 25 |     Else,
[INFO] [stdout]    |     ^^^^
[INFO] [stdout] 26 |     Return,
[INFO] [stdout]    |     ^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 29 |     Comma,
[INFO] [stdout]    |     ^^^^^
[INFO] [stdout] 30 |     Semicolon,
[INFO] [stdout]    |     ^^^^^^^^^
[INFO] [stdout] 31 |     LParen,
[INFO] [stdout]    |     ^^^^^^
[INFO] [stdout] 32 |     RParen,
[INFO] [stdout]    |     ^^^^^^
[INFO] [stdout] 33 |     LBrace,
[INFO] [stdout]    |     ^^^^^^
[INFO] [stdout] 34 |     RBrace,
[INFO] [stdout]    |     ^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `TokenType` 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: fields `token_type`, `lexeme`, and `offset` are never read
[INFO] [stdout]   --> src/lexer.rs:43:9
[INFO] [stdout]    |
[INFO] [stdout] 42 | pub struct Token {
[INFO] [stdout]    |            ----- fields in this struct
[INFO] [stdout] 43 |     pub token_type: TokenType,
[INFO] [stdout]    |         ^^^^^^^^^^
[INFO] [stdout] 44 |     pub lexeme: String,
[INFO] [stdout]    |         ^^^^^^
[INFO] [stdout] 45 |     pub offset: usize,
[INFO] [stdout]    |         ^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `Token` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: fields `token_type`, `lexeme`, and `offset` are never read
[INFO] [stdout]   --> src/lexer.rs:43:9
[INFO] [stdout]    |
[INFO] [stdout] 42 | pub struct Token {
[INFO] [stdout]    |            ----- fields in this struct
[INFO] [stdout] 43 |     pub token_type: TokenType,
[INFO] [stdout]    |         ^^^^^^^^^^
[INFO] [stdout] 44 |     pub lexeme: String,
[INFO] [stdout]    |         ^^^^^^
[INFO] [stdout] 45 |     pub offset: usize,
[INFO] [stdout]    |         ^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `Token` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 0.09s
[INFO] running `Command { std: "docker" "inspect" "6e4a982825b009b2760e088f00f9ddbea9d06c1eb72f7f2133f06d179fc66c01", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "6e4a982825b009b2760e088f00f9ddbea9d06c1eb72f7f2133f06d179fc66c01", kill_on_drop: false }`
[INFO] [stdout] 6e4a982825b009b2760e088f00f9ddbea9d06c1eb72f7f2133f06d179fc66c01