[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] testing mwglen/llvm-frontend against 1.60.0 for beta-1.61-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fmwglen%2Fllvm-frontend" "/workspace/builds/worker-7/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-7/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/mwglen/llvm-frontend on toolchain 1.60.0
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.60.0" "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-7/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" "+1.60.0" "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] [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-7/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/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:b0c94ce3c1162fcb8e57cac5b65ec2f72eabb1eebea4fcc35e269e823f681646" "/opt/rustwide/cargo-home/bin/cargo" "+1.60.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 091b4c3703b1406877610cb5fc170d653f382e8188413a2e5f2883ecd6c08d8d
[INFO] running `Command { std: "docker" "start" "-a" "091b4c3703b1406877610cb5fc170d653f382e8188413a2e5f2883ecd6c08d8d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "091b4c3703b1406877610cb5fc170d653f382e8188413a2e5f2883ecd6c08d8d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "091b4c3703b1406877610cb5fc170d653f382e8188413a2e5f2883ecd6c08d8d", kill_on_drop: false }`
[INFO] [stdout] 091b4c3703b1406877610cb5fc170d653f382e8188413a2e5f2883ecd6c08d8d
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/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=warn" "-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:b0c94ce3c1162fcb8e57cac5b65ec2f72eabb1eebea4fcc35e269e823f681646" "/opt/rustwide/cargo-home/bin/cargo" "+1.60.0" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 692a2d5708494a0016eae09295666726a3765b57359e72f59ba59dcd581a07d3
[INFO] running `Command { std: "docker" "start" "-a" "692a2d5708494a0016eae09295666726a3765b57359e72f59ba59dcd581a07d3", kill_on_drop: false }`
[INFO] [stderr]    Compiling memchr v2.4.0
[INFO] [stderr]    Compiling libc v0.2.97
[INFO] [stderr]    Compiling cc v1.0.68
[INFO] [stderr]    Compiling unicode-width v0.1.8
[INFO] [stderr]    Compiling strsim v0.8.0
[INFO] [stderr]    Compiling yaml-rust v0.3.5
[INFO] [stderr]    Compiling vec_map v0.8.2
[INFO] [stderr]    Compiling textwrap v0.11.0
[INFO] [stderr]    Compiling aho-corasick v0.7.18
[INFO] [stderr]    Compiling atty v0.2.14
[INFO] [stderr]    Compiling clap v2.33.3
[INFO] [stderr]    Compiling regex v1.5.4
[INFO] [stderr]    Compiling llvm-sys v100.2.1
[INFO] [stderr]    Compiling 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 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: 6 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 10.23s
[INFO] running `Command { std: "docker" "inspect" "692a2d5708494a0016eae09295666726a3765b57359e72f59ba59dcd581a07d3", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "692a2d5708494a0016eae09295666726a3765b57359e72f59ba59dcd581a07d3", kill_on_drop: false }`
[INFO] [stdout] 692a2d5708494a0016eae09295666726a3765b57359e72f59ba59dcd581a07d3
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/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=warn" "-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:b0c94ce3c1162fcb8e57cac5b65ec2f72eabb1eebea4fcc35e269e823f681646" "/opt/rustwide/cargo-home/bin/cargo" "+1.60.0" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 126f5236a94b4b3ecbed3422265039677d63614a71d689215eacd8b775515bc2
[INFO] running `Command { std: "docker" "start" "-a" "126f5236a94b4b3ecbed3422265039677d63614a71d689215eacd8b775515bc2", kill_on_drop: false }`
[INFO] [stderr]    Compiling 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 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: 6 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.71s
[INFO] running `Command { std: "docker" "inspect" "126f5236a94b4b3ecbed3422265039677d63614a71d689215eacd8b775515bc2", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "126f5236a94b4b3ecbed3422265039677d63614a71d689215eacd8b775515bc2", kill_on_drop: false }`
[INFO] [stdout] 126f5236a94b4b3ecbed3422265039677d63614a71d689215eacd8b775515bc2
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/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=warn" "-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:b0c94ce3c1162fcb8e57cac5b65ec2f72eabb1eebea4fcc35e269e823f681646" "/opt/rustwide/cargo-home/bin/cargo" "+1.60.0" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] 1c8d3227e2ae69598a5e63937622e1eeafddf40f08c9fb0ac173f01d3a2c5726
[INFO] running `Command { std: "docker" "start" "-a" "1c8d3227e2ae69598a5e63937622e1eeafddf40f08c9fb0ac173f01d3a2c5726", kill_on_drop: false }`
[INFO] [stderr] warning: unused import: `std::path::Path`
[INFO] [stderr]  --> src/main.rs:8:5
[INFO] [stderr]   |
[INFO] [stderr] 8 | use std::path::Path;
[INFO] [stderr]   |     ^^^^^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `tokens`
[INFO] [stderr]  --> src/parser.rs:5:14
[INFO] [stderr]   |
[INFO] [stderr] 5 | pub fn parse(tokens: Vec::<Token>) -> ParseTree {
[INFO] [stderr]   |              ^^^^^^ help: if this is intentional, prefix it with an underscore: `_tokens`
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(unused_variables)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `tree`
[INFO] [stderr]  --> src/codegen.rs:4:17
[INFO] [stderr]   |
[INFO] [stderr] 4 | pub fn generate(tree: ParseTree) -> String {
[INFO] [stderr]   |                 ^^^^ help: if this is intentional, prefix it with an underscore: `_tree`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `string`
[INFO] [stderr]  --> src/lexer.rs:3:16
[INFO] [stderr]   |
[INFO] [stderr] 3 | pub fn analyze(string: String) -> Vec<Token> {
[INFO] [stderr]   |                ^^^^^^ help: if this is intentional, prefix it with an underscore: `_string`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `code`
[INFO] [stderr]  --> src/preprocessor.rs:1:16
[INFO] [stderr]   |
[INFO] [stderr] 1 | pub fn process(code: String) -> String {
[INFO] [stderr]   |                ^^^^ help: if this is intentional, prefix it with an underscore: `_code`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `string`
[INFO] [stderr]  --> src/ir_compiler.rs:1:16
[INFO] [stderr]   |
[INFO] [stderr] 1 | pub fn compile(string: String) -> String {
[INFO] [stderr]   |                ^^^^^^ help: if this is intentional, prefix it with an underscore: `_string`
[INFO] [stderr] 
[INFO] [stderr] warning: `llvm-frontend` (bin "llvm-frontend" test) generated 6 warnings
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.02s
[INFO] [stderr]      Running unittests (/opt/rustwide/target/debug/deps/llvm_frontend-f9e302f10272da64)
[INFO] [stdout] 
[INFO] [stdout] running 0 tests
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "1c8d3227e2ae69598a5e63937622e1eeafddf40f08c9fb0ac173f01d3a2c5726", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "1c8d3227e2ae69598a5e63937622e1eeafddf40f08c9fb0ac173f01d3a2c5726", kill_on_drop: false }`
[INFO] [stdout] 1c8d3227e2ae69598a5e63937622e1eeafddf40f08c9fb0ac173f01d3a2c5726