[INFO] cloning repository https://github.com/pdckxd/mips-uclibc-hello-rust
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/pdckxd/mips-uclibc-hello-rust" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fpdckxd%2Fmips-uclibc-hello-rust", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fpdckxd%2Fmips-uclibc-hello-rust'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 987b750dad375b109dd15b7b2a4102bfd447e625
[INFO] checking pdckxd/mips-uclibc-hello-rust against 1.55.0 for beta-1.56-3
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fpdckxd%2Fmips-uclibc-hello-rust" "/workspace/builds/worker-91/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-91/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/pdckxd/mips-uclibc-hello-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] removed /workspace/builds/worker-91/source/.cargo/config.toml
[INFO] started tweaking git repo https://github.com/pdckxd/mips-uclibc-hello-rust
[INFO] finished tweaking git repo https://github.com/pdckxd/mips-uclibc-hello-rust
[INFO] tweaked toml for git repo https://github.com/pdckxd/mips-uclibc-hello-rust written to /workspace/builds/worker-91/source/Cargo.toml
[INFO] crate git repo https://github.com/pdckxd/mips-uclibc-hello-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] [stderr]     Updating crates.io index
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-91/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-91/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] ad35737e9b36813a541d2f40f4f48c3ffa77bdb14c38d49cbbf949d4280e8374
[INFO] running `Command { std: "docker" "start" "-a" "ad35737e9b36813a541d2f40f4f48c3ffa77bdb14c38d49cbbf949d4280e8374", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "ad35737e9b36813a541d2f40f4f48c3ffa77bdb14c38d49cbbf949d4280e8374", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "ad35737e9b36813a541d2f40f4f48c3ffa77bdb14c38d49cbbf949d4280e8374", kill_on_drop: false }`
[INFO] [stdout] ad35737e9b36813a541d2f40f4f48c3ffa77bdb14c38d49cbbf949d4280e8374
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-91/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-91/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" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 2f940d86541cf1b20bcef3bcb91a11f72658501450e17c22a1bea9b0a26dfc2f
[INFO] running `Command { std: "docker" "start" "-a" "2f940d86541cf1b20bcef3bcb91a11f72658501450e17c22a1bea9b0a26dfc2f", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]    Compiling cc v1.0.71
[INFO] [stderr]    Compiling pkg-config v0.3.20
[INFO] [stderr]    Compiling libc v0.2.104
[INFO] [stderr]    Compiling openssl v0.10.36
[INFO] [stderr]     Checking foreign-types-shared v0.1.1
[INFO] [stderr]     Checking bitflags v1.3.2
[INFO] [stderr]     Checking foreign-types v0.3.2
[INFO] [stderr]    Compiling openssl-sys v0.9.67
[INFO] [stderr]     Checking mips-uclibc-hello-rust v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the stable release channel
[INFO] [stdout]  --> src/main.rs:1:1
[INFO] [stdout]   |
[INFO] [stdout] 1 | #![feature(rustc_private)]
[INFO] [stdout]   | ^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::process::Command`
[INFO] [stdout]  --> src/main.rs:3:5
[INFO] [stdout]   |
[INFO] [stdout] 3 | use std::process::Command;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `strlen`
[INFO] [stdout]  --> src/main.rs:4:20
[INFO] [stdout]   |
[INFO] [stdout] 4 | use libc::{c_char, strlen};
[INFO] [stdout]   |                    ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `slice`, `str`
[INFO] [stdout]  --> src/main.rs:5:11
[INFO] [stdout]   |
[INFO] [stdout] 5 | use std::{slice, str};
[INFO] [stdout]   |           ^^^^^  ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::ffi::CStr`
[INFO] [stdout]  --> src/main.rs:6:5
[INFO] [stdout]   |
[INFO] [stdout] 6 | use std::ffi::CStr;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to previous error; 4 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0554`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `mips-uclibc-hello-rust` due to 2 previous errors; 4 warnings emitted
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the stable release channel
[INFO] [stdout]  --> src/main.rs:1:1
[INFO] [stdout]   |
[INFO] [stdout] 1 | #![feature(rustc_private)]
[INFO] [stdout]   | ^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::process::Command`
[INFO] [stdout]  --> src/main.rs:3:5
[INFO] [stdout]   |
[INFO] [stdout] 3 | use std::process::Command;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `strlen`
[INFO] [stdout]  --> src/main.rs:4:20
[INFO] [stdout]   |
[INFO] [stdout] 4 | use libc::{c_char, strlen};
[INFO] [stdout]   |                    ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `slice`, `str`
[INFO] [stdout]  --> src/main.rs:5:11
[INFO] [stdout]   |
[INFO] [stdout] 5 | use std::{slice, str};
[INFO] [stdout]   |           ^^^^^  ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::ffi::CStr`
[INFO] [stdout]  --> src/main.rs:6:5
[INFO] [stdout]   |
[INFO] [stdout] 6 | use std::ffi::CStr;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to previous error; 4 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0554`.
[INFO] [stdout] 
[INFO] [stderr] error: build failed
[INFO] running `Command { std: "docker" "inspect" "2f940d86541cf1b20bcef3bcb91a11f72658501450e17c22a1bea9b0a26dfc2f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "2f940d86541cf1b20bcef3bcb91a11f72658501450e17c22a1bea9b0a26dfc2f", kill_on_drop: false }`
[INFO] [stdout] 2f940d86541cf1b20bcef3bcb91a11f72658501450e17c22a1bea9b0a26dfc2f
