[INFO] fetching crate khaki 0.2.0...
[INFO] testing khaki-0.2.0 against 1.55.0 for beta-1.56-1
[INFO] extracting crate khaki 0.2.0 into /workspace/builds/worker-107/source
[INFO] validating manifest of crates.io crate khaki 0.2.0 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 crates.io crate khaki 0.2.0
[INFO] finished tweaking crates.io crate khaki 0.2.0
[INFO] tweaked toml for crates.io crate khaki 0.2.0 written to /workspace/builds/worker-107/source/Cargo.toml
[INFO] crate crates.io crate khaki 0.2.0 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] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded hmac-sha256 v0.1.2
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-107/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-107/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] f1be4f7da23692ff5da91bb855de631b81e11d853c4be9a17d380f9b509330c2
[INFO] running `Command { std: "docker" "start" "-a" "f1be4f7da23692ff5da91bb855de631b81e11d853c4be9a17d380f9b509330c2", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "f1be4f7da23692ff5da91bb855de631b81e11d853c4be9a17d380f9b509330c2", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "f1be4f7da23692ff5da91bb855de631b81e11d853c4be9a17d380f9b509330c2", kill_on_drop: false }`
[INFO] [stdout] f1be4f7da23692ff5da91bb855de631b81e11d853c4be9a17d380f9b509330c2
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-107/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-107/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] 297a1604cdc75af505e68d8092634102b57a087532b7b24e2c2c7b065e1267e4
[INFO] running `Command { std: "docker" "start" "-a" "297a1604cdc75af505e68d8092634102b57a087532b7b24e2c2c7b065e1267e4", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.74
[INFO] [stderr]    Compiling hmac-sha256 v0.1.2
[INFO] [stderr]    Compiling dirs-sys v0.3.5
[INFO] [stderr]    Compiling dirs v3.0.1
[INFO] [stderr]    Compiling khaki v0.2.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 3.19s
[INFO] running `Command { std: "docker" "inspect" "297a1604cdc75af505e68d8092634102b57a087532b7b24e2c2c7b065e1267e4", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "297a1604cdc75af505e68d8092634102b57a087532b7b24e2c2c7b065e1267e4", kill_on_drop: false }`
[INFO] [stdout] 297a1604cdc75af505e68d8092634102b57a087532b7b24e2c2c7b065e1267e4
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-107/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-107/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" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 3e048df022490940e344e7a9e9358ec4910c4072d6faaf907aa5e0f214d3baf5
[INFO] running `Command { std: "docker" "start" "-a" "3e048df022490940e344e7a9e9358ec4910c4072d6faaf907aa5e0f214d3baf5", kill_on_drop: false }`
[INFO] [stderr]    Compiling khaki v0.2.0 (/opt/rustwide/workdir)
[INFO] [stdout] error: expected item, found keyword `for`
[INFO] [stdout]  --> examples/args.rs:3:1
[INFO] [stdout]   |
[INFO] [stdout] 3 | for arg in args().skip(1) {
[INFO] [stdout]   | ^^^ expected item
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to previous error
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `khaki` due to 2 previous errors
[INFO] [stdout] error: expected item, found keyword `let`
[INFO] [stdout]  --> examples/echo.rs:3:1
[INFO] [stdout]   |
[INFO] [stdout] 3 | let stdin = stdin();
[INFO] [stdout]   | ^^^ expected item
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stdout] error: aborting due to previous error
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: build failed
[INFO] running `Command { std: "docker" "inspect" "3e048df022490940e344e7a9e9358ec4910c4072d6faaf907aa5e0f214d3baf5", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "3e048df022490940e344e7a9e9358ec4910c4072d6faaf907aa5e0f214d3baf5", kill_on_drop: false }`
[INFO] [stdout] 3e048df022490940e344e7a9e9358ec4910c4072d6faaf907aa5e0f214d3baf5