[INFO] cloning repository https://github.com/ray33ee/mylang_template
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/ray33ee/mylang_template" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fray33ee%2Fmylang_template", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fray33ee%2Fmylang_template'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 149fa75e734be010dda6d7553ffbc40c4e231f6d
[INFO] checking ray33ee/mylang_template against try#7424ce9ff9baac3e9d9f5dd3c85828cddea0134d for pr-136776-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fray33ee%2Fmylang_template" "/workspace/builds/worker-3-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-3-tc2/source'...
[INFO] [stderr] done.
[INFO] started tweaking git repo https://github.com/ray33ee/mylang_template
[INFO] finished tweaking git repo https://github.com/ray33ee/mylang_template
[INFO] tweaked toml for git repo https://github.com/ray33ee/mylang_template written to /workspace/builds/worker-3-tc2/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/ray33ee/mylang_template on toolchain 7424ce9ff9baac3e9d9f5dd3c85828cddea0134d
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+7424ce9ff9baac3e9d9f5dd3c85828cddea0134d" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/ray33ee/mylang_template already has a lockfile, it will not be regenerated
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+7424ce9ff9baac3e9d9f5dd3c85828cddea0134d" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Updating git repository `https://github.com/ray33ee/dumpster`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[ERROR] error running command: no output for 300 seconds
[INFO] checking ray33ee/mylang_template against try#7424ce9ff9baac3e9d9f5dd3c85828cddea0134d for pr-136776-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fray33ee%2Fmylang_template" "/workspace/builds/worker-3-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-3-tc2/source'...
[INFO] [stderr] done.
[INFO] started tweaking git repo https://github.com/ray33ee/mylang_template
[INFO] finished tweaking git repo https://github.com/ray33ee/mylang_template
[INFO] tweaked toml for git repo https://github.com/ray33ee/mylang_template written to /workspace/builds/worker-3-tc2/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/ray33ee/mylang_template on toolchain 7424ce9ff9baac3e9d9f5dd3c85828cddea0134d
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+7424ce9ff9baac3e9d9f5dd3c85828cddea0134d" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/ray33ee/mylang_template already has a lockfile, it will not be regenerated
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+7424ce9ff9baac3e9d9f5dd3c85828cddea0134d" "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] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc2/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@sha256:94a0c148923f5b2b52a63ef0eeb1882ad339ab61bce784c8077cbe41c61feb6c" "/opt/rustwide/cargo-home/bin/cargo" "+7424ce9ff9baac3e9d9f5dd3c85828cddea0134d" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 30414c930ce91f419ef352771e34acff20cc0fbe640e9241c4f9dd994892214e
[INFO] running `Command { std: "docker" "start" "-a" "30414c930ce91f419ef352771e34acff20cc0fbe640e9241c4f9dd994892214e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "30414c930ce91f419ef352771e34acff20cc0fbe640e9241c4f9dd994892214e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "30414c930ce91f419ef352771e34acff20cc0fbe640e9241c4f9dd994892214e", kill_on_drop: false }`
[INFO] [stdout] 30414c930ce91f419ef352771e34acff20cc0fbe640e9241c4f9dd994892214e
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc2/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" "RUSTDOCFLAGS=--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@sha256:94a0c148923f5b2b52a63ef0eeb1882ad339ab61bce784c8077cbe41c61feb6c" "/opt/rustwide/cargo-home/bin/cargo" "+7424ce9ff9baac3e9d9f5dd3c85828cddea0134d" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 4fb77e251d6a293ff5b93f3eab43e41d2fdc7edc8323f3a8017b58cc6c46ad1b
[INFO] running `Command { std: "docker" "start" "-a" "4fb77e251d6a293ff5b93f3eab43e41d2fdc7edc8323f3a8017b58cc6c46ad1b", kill_on_drop: false }`
[INFO] [stderr]    Compiling syn v2.0.66
[INFO] [stderr]     Checking parking_lot_core v0.9.10
[INFO] [stderr]     Checking parking_lot v0.12.3
[INFO] [stderr]    Compiling dumpster_derive v0.1.2 (https://github.com/ray33ee/dumpster#0a50ec75)
[INFO] [stderr]     Checking dumpster v0.1.2 (https://github.com/ray33ee/dumpster#0a50ec75)
[INFO] [stderr]     Checking mylang_template v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `std::hash::Hasher`
[INFO] [stdout]  --> src/built_ins/Integer.rs:6:5
[INFO] [stdout]   |
[INFO] [stdout] 6 | use std::hash::Hasher;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `CellRc`
[INFO] [stdout]   --> src/built_ins/Integer.rs:10:27
[INFO] [stdout]    |
[INFO] [stdout] 10 | use crate::heap::{CellGc, CellRc};
[INFO] [stdout]    |                           ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `crate::built_ins::Bytes::Bytes`
[INFO] [stdout]  --> src/built_ins/Float.rs:6:5
[INFO] [stdout]   |
[INFO] [stdout] 6 | use crate::built_ins::Bytes::Bytes;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::hash::Hasher`
[INFO] [stdout]  --> src/built_ins/Integer.rs:6:5
[INFO] [stdout]   |
[INFO] [stdout] 6 | use std::hash::Hasher;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `CellRc`
[INFO] [stdout]   --> src/built_ins/Integer.rs:10:27
[INFO] [stdout]    |
[INFO] [stdout] 10 | use crate::heap::{CellGc, CellRc};
[INFO] [stdout]    |                           ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `crate::built_ins::Bytes::Bytes`
[INFO] [stdout]  --> src/built_ins/Float.rs:6:5
[INFO] [stdout]   |
[INFO] [stdout] 6 | use crate::built_ins::Bytes::Bytes;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0601]: `main` function not found in crate `mylang_template`
[INFO] [stdout]   --> src/main.rs:19:2
[INFO] [stdout]    |
[INFO] [stdout] 19 | }
[INFO] [stdout]    |  ^ consider adding a `main` function to `src/main.rs`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `append` is never used
[INFO] [stdout]   --> src/built_ins/List.rs:23:12
[INFO] [stdout]    |
[INFO] [stdout] 10 | impl<T: Clone + Collectable> List<T> /*START PARSE HERE*/ {
[INFO] [stdout]    | ------------------------------------ method in this implementation
[INFO] [stdout] ...
[INFO] [stdout] 23 |     pub fn append(& mut self, item: T) {
[INFO] [stdout]    |            ^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Option` is never constructed
[INFO] [stdout]  --> src/built_ins/Option.rs:7:12
[INFO] [stdout]   |
[INFO] [stdout] 7 | pub struct Option<O: Collectable + Clone + 'static> {
[INFO] [stdout]   |            ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function `new` is never used
[INFO] [stdout]   --> src/built_ins/Option.rs:25:12
[INFO] [stdout]    |
[INFO] [stdout] 24 | impl<O: Collectable + Clone> Option<O> /*START PARSE HERE*/ {
[INFO] [stdout]    | -------------------------------------- associated function in this implementation
[INFO] [stdout] 25 |     pub fn new(item: std::option::Option<O>) -> Option<O> {
[INFO] [stdout]    |            ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `StdOut` is never constructed
[INFO] [stdout]  --> src/classes/StdOut.rs:4:12
[INFO] [stdout]   |
[INFO] [stdout] 4 | pub struct StdOut {
[INFO] [stdout]   |            ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0601`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `mylang_template` (bin "mylang_template") due to 1 previous error; 3 warnings emitted
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] running `Command { std: "docker" "inspect" "4fb77e251d6a293ff5b93f3eab43e41d2fdc7edc8323f3a8017b58cc6c46ad1b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "4fb77e251d6a293ff5b93f3eab43e41d2fdc7edc8323f3a8017b58cc6c46ad1b", kill_on_drop: false }`
[INFO] [stdout] 4fb77e251d6a293ff5b93f3eab43e41d2fdc7edc8323f3a8017b58cc6c46ad1b