[INFO] cloning repository https://github.com/yczhangsjtu/dart2csharp
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/yczhangsjtu/dart2csharp" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fyczhangsjtu%2Fdart2csharp", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fyczhangsjtu%2Fdart2csharp'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 1f069ec804ae63ac2b3209514a788391b5639558
[INFO] checking yczhangsjtu/dart2csharp against try#81275a1445c7502a974118e0c69b795ab60be991 for pr-80243
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fyczhangsjtu%2Fdart2csharp" "/workspace/builds/worker-6/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-6/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/yczhangsjtu/dart2csharp on toolchain 81275a1445c7502a974118e0c69b795ab60be991
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+81275a1445c7502a974118e0c69b795ab60be991" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/yczhangsjtu/dart2csharp
[INFO] finished tweaking git repo https://github.com/yczhangsjtu/dart2csharp
[INFO] tweaked toml for git repo https://github.com/yczhangsjtu/dart2csharp written to /workspace/builds/worker-6/source/Cargo.toml
[INFO] crate git repo https://github.com/yczhangsjtu/dart2csharp already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+81275a1445c7502a974118e0c69b795ab60be991" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/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" "rustops/crates-build-env@sha256:b8eeb62f26c39b23691079a6cb6de528d8e88b4d71a8f6b1d30f8ba7d9c16de9" "/opt/rustwide/cargo-home/bin/cargo" "+81275a1445c7502a974118e0c69b795ab60be991" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] d9d17fcb1c449caa8b7eaf8482df1925069ffe530e8d5c4ccff176804fe12609
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "d9d17fcb1c449caa8b7eaf8482df1925069ffe530e8d5c4ccff176804fe12609", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "d9d17fcb1c449caa8b7eaf8482df1925069ffe530e8d5c4ccff176804fe12609", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "d9d17fcb1c449caa8b7eaf8482df1925069ffe530e8d5c4ccff176804fe12609", kill_on_drop: false }`
[INFO] [stdout] d9d17fcb1c449caa8b7eaf8482df1925069ffe530e8d5c4ccff176804fe12609
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/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" "rustops/crates-build-env@sha256:b8eeb62f26c39b23691079a6cb6de528d8e88b4d71a8f6b1d30f8ba7d9c16de9" "/opt/rustwide/cargo-home/bin/cargo" "+81275a1445c7502a974118e0c69b795ab60be991" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] f4e0ffcf679dabbe45b0b5d892c84f5c22692ef9d9eb839d35e07d7b66595d1d
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "f4e0ffcf679dabbe45b0b5d892c84f5c22692ef9d9eb839d35e07d7b66595d1d", kill_on_drop: false }`
[INFO] [stderr]    Compiling memchr v2.3.2
[INFO] [stderr]     Checking regex-syntax v0.6.14
[INFO] [stderr]     Checking aho-corasick v0.7.8
[INFO] [stderr]     Checking regex v1.3.4
[INFO] [stderr]     Checking dart2csharp v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: associated function is never used: `new`
[INFO] [stdout]   --> src/eregex/mod.rs:26:9
[INFO] [stdout]    |
[INFO] [stdout] 26 |     pub fn new(regex : Regex) -> BasicElement {
[INFO] [stdout]    |            ^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `new`
[INFO] [stdout]   --> src/tokens/mod.rs:11:5
[INFO] [stdout]    |
[INFO] [stdout] 11 |     fn new() -> Word {
[INFO] [stdout]    |        ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 9.76s
[INFO] running `Command { std: "docker" "inspect" "f4e0ffcf679dabbe45b0b5d892c84f5c22692ef9d9eb839d35e07d7b66595d1d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "f4e0ffcf679dabbe45b0b5d892c84f5c22692ef9d9eb839d35e07d7b66595d1d", kill_on_drop: false }`
[INFO] [stdout] f4e0ffcf679dabbe45b0b5d892c84f5c22692ef9d9eb839d35e07d7b66595d1d