[INFO] cloning repository https://github.com/firephyz/MetaMacroMachine
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/firephyz/MetaMacroMachine" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Ffirephyz%2FMetaMacroMachine", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Ffirephyz%2FMetaMacroMachine'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 3f081648e2383fbe37998f8fcf7afd574b774e3c
[INFO] checking firephyz/MetaMacroMachine against master#cfe9ffcd7c2d63fd3e0fc33a8d23ac4f0d50efe9 for pr-136968
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Ffirephyz%2FMetaMacroMachine" "/workspace/builds/worker-2-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-2-tc1/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/firephyz/MetaMacroMachine on toolchain cfe9ffcd7c2d63fd3e0fc33a8d23ac4f0d50efe9
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+cfe9ffcd7c2d63fd3e0fc33a8d23ac4f0d50efe9" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/firephyz/MetaMacroMachine
[INFO] finished tweaking git repo https://github.com/firephyz/MetaMacroMachine
[INFO] tweaked toml for git repo https://github.com/firephyz/MetaMacroMachine written to /workspace/builds/worker-2-tc1/source/Cargo.toml
[INFO] crate git repo https://github.com/firephyz/MetaMacroMachine 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" "+cfe9ffcd7c2d63fd3e0fc33a8d23ac4f0d50efe9" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc1/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@sha256:3959728d45483eb673ba100a951a6b9f5012970368db2a9e08e0ac9b67c8a5ad" "/opt/rustwide/cargo-home/bin/cargo" "+cfe9ffcd7c2d63fd3e0fc33a8d23ac4f0d50efe9" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 52f269cd24509ea90bbd22a319b6e53731178cf4f187c8760d359b25eb84e9d0
[INFO] running `Command { std: "docker" "start" "-a" "52f269cd24509ea90bbd22a319b6e53731178cf4f187c8760d359b25eb84e9d0", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "52f269cd24509ea90bbd22a319b6e53731178cf4f187c8760d359b25eb84e9d0", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "52f269cd24509ea90bbd22a319b6e53731178cf4f187c8760d359b25eb84e9d0", kill_on_drop: false }`
[INFO] [stdout] 52f269cd24509ea90bbd22a319b6e53731178cf4f187c8760d359b25eb84e9d0
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc1/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@sha256:3959728d45483eb673ba100a951a6b9f5012970368db2a9e08e0ac9b67c8a5ad" "/opt/rustwide/cargo-home/bin/cargo" "+cfe9ffcd7c2d63fd3e0fc33a8d23ac4f0d50efe9" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 0400d35ab49ba31837d3604c455be3590bd89cf8ca821162a67a2ad908f7aba8
[INFO] running `Command { std: "docker" "start" "-a" "0400d35ab49ba31837d3604c455be3590bd89cf8ca821162a67a2ad908f7aba8", kill_on_drop: false }`
[INFO] [stderr]    Compiling memchr v2.4.1
[INFO] [stderr]     Checking regex-syntax v0.6.25
[INFO] [stderr]     Checking aho-corasick v0.7.18
[INFO] [stderr]     Checking regex v1.5.5
[INFO] [stderr]     Checking syms v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] error[E0603]: trait `MetaElement` is private
[INFO] [stdout]  --> src/primitives/mod.rs:6:14
[INFO] [stdout]   |
[INFO] [stdout] 6 | pub use new::MetaElement;
[INFO] [stdout]   |              ^^^^^^^^^^^ private trait
[INFO] [stdout]   |
[INFO] [stdout] note: the trait `MetaElement` is defined here
[INFO] [stdout]  --> src/primitives/new.rs:1:1
[INFO] [stdout]   |
[INFO] [stdout] 1 | trait MetaElement {
[INFO] [stdout]   | ^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0603]: trait `MetaElement` is private
[INFO] [stdout]  --> src/primitives/mod.rs:6:14
[INFO] [stdout]   |
[INFO] [stdout] 6 | pub use new::MetaElement;
[INFO] [stdout]   |              ^^^^^^^^^^^ private trait
[INFO] [stdout]   |
[INFO] [stdout] note: the trait `MetaElement` is defined here
[INFO] [stdout]  --> src/primitives/new.rs:1:1
[INFO] [stdout]   |
[INFO] [stdout] 1 | trait MetaElement {
[INFO] [stdout]   | ^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `SymAtom`
[INFO] [stdout]  --> src/primitives/element.rs:2:38
[INFO] [stdout]   |
[INFO] [stdout] 2 | use crate::parse::{SymItem, SymList, SymAtom};
[INFO] [stdout]   |                                      ^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `SymAtom`
[INFO] [stdout]  --> src/primitives/element.rs:2:38
[INFO] [stdout]   |
[INFO] [stdout] 2 | use crate::parse::{SymItem, SymList, SymAtom};
[INFO] [stdout]   |                                      ^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::slice::Iter`
[INFO] [stdout]   --> src/main.rs:12:5
[INFO] [stdout]    |
[INFO] [stdout] 12 | use std::slice::Iter;
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::slice::Iter`
[INFO] [stdout]   --> src/main.rs:12:5
[INFO] [stdout]    |
[INFO] [stdout] 12 | use std::slice::Iter;
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0603`.
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0603`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `syms` (bin "syms" test) due to 1 previous error; 2 warnings emitted
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stderr] error: could not compile `syms` (bin "syms") due to 1 previous error; 2 warnings emitted
[INFO] running `Command { std: "docker" "inspect" "0400d35ab49ba31837d3604c455be3590bd89cf8ca821162a67a2ad908f7aba8", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "0400d35ab49ba31837d3604c455be3590bd89cf8ca821162a67a2ad908f7aba8", kill_on_drop: false }`
[INFO] [stdout] 0400d35ab49ba31837d3604c455be3590bd89cf8ca821162a67a2ad908f7aba8