[INFO] cloning repository https://github.com/jcbalcita/learn-rust
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/jcbalcita/learn-rust" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fjcbalcita%2Flearn-rust", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fjcbalcita%2Flearn-rust'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 134571cd9288dbc1616682c62fba60c82d8f9016
[INFO] testing jcbalcita/learn-rust against 1.55.0 for beta-1.56-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fjcbalcita%2Flearn-rust" "/workspace/builds/worker-117/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-117/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/jcbalcita/learn-rust on toolchain 1.55.0
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.55.0" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/jcbalcita/learn-rust
[INFO] finished tweaking git repo https://github.com/jcbalcita/learn-rust
[INFO] tweaked toml for git repo https://github.com/jcbalcita/learn-rust written to /workspace/builds/worker-117/source/Cargo.toml
[INFO] crate git repo https://github.com/jcbalcita/learn-rust already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.55.0" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-117/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-117/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:a89201d6b5b9fd45c15d5952ece0a0129e7e80cb26ec023fd59cf09bc26f1604" "/opt/rustwide/cargo-home/bin/cargo" "+1.55.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] ecabc58e0b7cd716f6e60f6ef8e14ba816dbb17c8e3558c1d61c4446bc3bc308
[INFO] running `Command { std: "docker" "start" "-a" "ecabc58e0b7cd716f6e60f6ef8e14ba816dbb17c8e3558c1d61c4446bc3bc308", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "ecabc58e0b7cd716f6e60f6ef8e14ba816dbb17c8e3558c1d61c4446bc3bc308", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "ecabc58e0b7cd716f6e60f6ef8e14ba816dbb17c8e3558c1d61c4446bc3bc308", kill_on_drop: false }`
[INFO] [stdout] ecabc58e0b7cd716f6e60f6ef8e14ba816dbb17c8e3558c1d61c4446bc3bc308
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-117/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-117/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:a89201d6b5b9fd45c15d5952ece0a0129e7e80cb26ec023fd59cf09bc26f1604" "/opt/rustwide/cargo-home/bin/cargo" "+1.55.0" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] facf9833142afd4587098c9b7d71c35d7d4e4025b93c578ac638e3941cc4fb02
[INFO] running `Command { std: "docker" "start" "-a" "facf9833142afd4587098c9b7d71c35d7d4e4025b93c578ac638e3941cc4fb02", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]    Compiling hello v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] error: format argument must be a string literal
[INFO] [stdout]   --> src/main.rs:15:14
[INFO] [stdout]    |
[INFO] [stdout] 15 |     println!(HELLO_WORLD);
[INFO] [stdout]    |              ^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout] help: you might be missing a string literal to format with
[INFO] [stdout]    |
[INFO] [stdout] 15 |     println!("{}", HELLO_WORLD);
[INFO] [stdout]    |              ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0106]: missing lifetime specifier
[INFO] [stdout]   --> src/main.rs:13:21
[INFO] [stdout]    |
[INFO] [stdout] 13 | fn hello_world() -> &str {
[INFO] [stdout]    |                     ^ expected named lifetime parameter
[INFO] [stdout]    |
[INFO] [stdout]    = help: this function's return type contains a borrowed value, but there is no value for it to be borrowed from
[INFO] [stdout] help: consider using the `'static` lifetime
[INFO] [stdout]    |
[INFO] [stdout] 13 | fn hello_world() -> &'static str {
[INFO] [stdout]    |                     ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 2 previous errors
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0106`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `hello` due to 3 previous errors
[INFO] running `Command { std: "docker" "inspect" "facf9833142afd4587098c9b7d71c35d7d4e4025b93c578ac638e3941cc4fb02", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "facf9833142afd4587098c9b7d71c35d7d4e4025b93c578ac638e3941cc4fb02", kill_on_drop: false }`
[INFO] [stdout] facf9833142afd4587098c9b7d71c35d7d4e4025b93c578ac638e3941cc4fb02