[INFO] cloning repository https://github.com/mwglen/llvm-frontend
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/mwglen/llvm-frontend" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fmwglen%2Fllvm-frontend", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fmwglen%2Fllvm-frontend'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] f9ac8db7e5dd8b4b46b8421f88a2c427dbf11552
[INFO] checking mwglen/llvm-frontend against try#3e59a8c2f14152ccc92a6c079f592dc2dc6fa93f for pr-87248
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fmwglen%2Fllvm-frontend" "/workspace/builds/worker-4/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-4/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/mwglen/llvm-frontend on toolchain 3e59a8c2f14152ccc92a6c079f592dc2dc6fa93f
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+3e59a8c2f14152ccc92a6c079f592dc2dc6fa93f" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/mwglen/llvm-frontend
[INFO] finished tweaking git repo https://github.com/mwglen/llvm-frontend
[INFO] tweaked toml for git repo https://github.com/mwglen/llvm-frontend written to /workspace/builds/worker-4/source/Cargo.toml
[INFO] crate git repo https://github.com/mwglen/llvm-frontend already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+3e59a8c2f14152ccc92a6c079f592dc2dc6fa93f" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded llvm-sys v100.2.1
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/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@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+3e59a8c2f14152ccc92a6c079f592dc2dc6fa93f" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 0747ebd46b840f1141a34cb8d703e14cdeb0caf9fedf6681382c9749ada0fdb5
[INFO] running `Command { std: "docker" "start" "-a" "0747ebd46b840f1141a34cb8d703e14cdeb0caf9fedf6681382c9749ada0fdb5", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "0747ebd46b840f1141a34cb8d703e14cdeb0caf9fedf6681382c9749ada0fdb5", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "0747ebd46b840f1141a34cb8d703e14cdeb0caf9fedf6681382c9749ada0fdb5", kill_on_drop: false }`
[INFO] [stdout] 0747ebd46b840f1141a34cb8d703e14cdeb0caf9fedf6681382c9749ada0fdb5
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/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" "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@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+3e59a8c2f14152ccc92a6c079f592dc2dc6fa93f" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] bdecd445f33e897cd254ed235690077cdc3f82d481a89da140007c44f4c61cb2
[INFO] running `Command { std: "docker" "start" "-a" "bdecd445f33e897cd254ed235690077cdc3f82d481a89da140007c44f4c61cb2", kill_on_drop: false }`
[INFO] [stderr]    Compiling memchr v2.4.0
[INFO] [stderr]    Compiling libc v0.2.97
[INFO] [stderr]    Compiling semver-parser v0.7.0
[INFO] [stderr]    Compiling regex-syntax v0.6.25
[INFO] [stderr]    Compiling cc v1.0.68
[INFO] [stderr]    Compiling bitflags v1.2.1
[INFO] [stderr]     Checking yaml-rust v0.3.5
[INFO] [stderr]     Checking strsim v0.8.0
[INFO] [stderr]     Checking textwrap v0.11.0
[INFO] [stderr]    Compiling semver v0.9.0
[INFO] [stderr]    Compiling aho-corasick v0.7.18
[INFO] [stderr]     Checking atty v0.2.14
[INFO] [stderr]     Checking clap v2.33.3
[INFO] [stderr]    Compiling regex v1.5.4
[INFO] [stderr]    Compiling llvm-sys v100.2.1
[INFO] [stderr]     Checking llvm-frontend v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `std::path::Path`
[INFO] [stdout]  --> src/main.rs:8:5
[INFO] [stdout]   |
[INFO] [stdout] 8 | use std::path::Path;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::path::Path`
[INFO] [stdout]  --> src/main.rs:8:5
[INFO] [stdout]   |
[INFO] [stdout] 8 | use std::path::Path;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `tokens`
[INFO] [stdout]  --> src/parser.rs:5:14
[INFO] [stdout]   |
[INFO] [stdout] 5 | pub fn parse(tokens: Vec::<Token>) -> ParseTree {
[INFO] [stdout]   |              ^^^^^^ help: if this is intentional, prefix it with an underscore: `_tokens`
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `tree`
[INFO] [stdout]  --> src/codegen.rs:4:17
[INFO] [stdout]   |
[INFO] [stdout] 4 | pub fn generate(tree: ParseTree) -> String {
[INFO] [stdout]   |                 ^^^^ help: if this is intentional, prefix it with an underscore: `_tree`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `string`
[INFO] [stdout]  --> src/lexer.rs:3:16
[INFO] [stdout]   |
[INFO] [stdout] 3 | pub fn analyze(string: String) -> Vec<Token> {
[INFO] [stdout]   |                ^^^^^^ help: if this is intentional, prefix it with an underscore: `_string`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `code`
[INFO] [stdout]  --> src/preprocessor.rs:1:16
[INFO] [stdout]   |
[INFO] [stdout] 1 | pub fn process(code: String) -> String {
[INFO] [stdout]   |                ^^^^ help: if this is intentional, prefix it with an underscore: `_code`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `string`
[INFO] [stdout]  --> src/ir_compiler.rs:1:16
[INFO] [stdout]   |
[INFO] [stdout] 1 | pub fn compile(string: String) -> String {
[INFO] [stdout]   |                ^^^^^^ help: if this is intentional, prefix it with an underscore: `_string`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `tokens`
[INFO] [stdout]  --> src/parser.rs:5:14
[INFO] [stdout]   |
[INFO] [stdout] 5 | pub fn parse(tokens: Vec::<Token>) -> ParseTree {
[INFO] [stdout]   |              ^^^^^^ help: if this is intentional, prefix it with an underscore: `_tokens`
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 6 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `tree`
[INFO] [stdout]  --> src/codegen.rs:4:17
[INFO] [stdout]   |
[INFO] [stdout] 4 | pub fn generate(tree: ParseTree) -> String {
[INFO] [stdout]   |                 ^^^^ help: if this is intentional, prefix it with an underscore: `_tree`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `string`
[INFO] [stdout]  --> src/lexer.rs:3:16
[INFO] [stdout]   |
[INFO] [stdout] 3 | pub fn analyze(string: String) -> Vec<Token> {
[INFO] [stdout]   |                ^^^^^^ help: if this is intentional, prefix it with an underscore: `_string`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `code`
[INFO] [stdout]  --> src/preprocessor.rs:1:16
[INFO] [stdout]   |
[INFO] [stdout] 1 | pub fn process(code: String) -> String {
[INFO] [stdout]   |                ^^^^ help: if this is intentional, prefix it with an underscore: `_code`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `string`
[INFO] [stdout]  --> src/ir_compiler.rs:1:16
[INFO] [stdout]   |
[INFO] [stdout] 1 | pub fn compile(string: String) -> String {
[INFO] [stdout]   |                ^^^^^^ help: if this is intentional, prefix it with an underscore: `_string`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 6 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 16.42s
[INFO] running `Command { std: "docker" "inspect" "bdecd445f33e897cd254ed235690077cdc3f82d481a89da140007c44f4c61cb2", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "bdecd445f33e897cd254ed235690077cdc3f82d481a89da140007c44f4c61cb2", kill_on_drop: false }`
[INFO] [stdout] bdecd445f33e897cd254ed235690077cdc3f82d481a89da140007c44f4c61cb2