[INFO] cloning repository https://github.com/mordof/rust_opengl_experiment
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/mordof/rust_opengl_experiment" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fmordof%2Frust_opengl_experiment", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fmordof%2Frust_opengl_experiment'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 7c871140b4355606efa465cfe31301cbd3e7f3ca
[INFO] testing mordof/rust_opengl_experiment against 1.55.0 for beta-1.56-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fmordof%2Frust_opengl_experiment" "/workspace/builds/worker-4/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-4/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/mordof/rust_opengl_experiment 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 git repo https://github.com/mordof/rust_opengl_experiment
[INFO] finished tweaking git repo https://github.com/mordof/rust_opengl_experiment
[INFO] tweaked toml for git repo https://github.com/mordof/rust_opengl_experiment written to /workspace/builds/worker-4/source/Cargo.toml
[INFO] crate git repo https://github.com/mordof/rust_opengl_experiment 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 ...
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[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/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] 61f24e3988d98aa4c4da279002563cb71f0fe056af0fce161f8618f28c63c164
[INFO] running `Command { std: "docker" "start" "-a" "61f24e3988d98aa4c4da279002563cb71f0fe056af0fce161f8618f28c63c164", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "61f24e3988d98aa4c4da279002563cb71f0fe056af0fce161f8618f28c63c164", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "61f24e3988d98aa4c4da279002563cb71f0fe056af0fce161f8618f28c63c164", kill_on_drop: false }`
[INFO] [stdout] 61f24e3988d98aa4c4da279002563cb71f0fe056af0fce161f8618f28c63c164
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/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] f88ee7f4c54e0240ae7d4c5181bda31f941350dd03bb2358e9bae0a5236b8081
[INFO] running `Command { std: "docker" "start" "-a" "f88ee7f4c54e0240ae7d4c5181bda31f941350dd03bb2358e9bae0a5236b8081", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.45
[INFO] [stderr]    Compiling cc v1.0.26
[INFO] [stderr]    Compiling lazy_static v1.2.0
[INFO] [stderr]    Compiling byteorder v1.2.7
[INFO] [stderr]    Compiling slab v0.4.1
[INFO] [stderr]    Compiling arrayvec v0.4.9
[INFO] [stderr]    Compiling crc32fast v1.1.2
[INFO] [stderr]    Compiling serde v1.0.82
[INFO] [stderr]    Compiling openssl v0.10.16
[INFO] [stderr]    Compiling string v0.1.2
[INFO] [stderr]    Compiling encoding_rs v0.8.13
[INFO] [stderr]    Compiling unicode-normalization v0.1.7
[INFO] [stderr]    Compiling regex v1.1.0
[INFO] [stderr]    Compiling typenum v1.10.0
[INFO] [stderr]    Compiling num-complex v0.2.1
[INFO] [stderr]    Compiling libm v0.1.2
[INFO] [stderr]    Compiling rawpointer v0.1.0
[INFO] [stderr]    Compiling same-file v1.0.4
[INFO] [stderr]    Compiling libc v0.1.12
[INFO] [stderr]    Compiling log v0.4.6
[INFO] [stderr]    Compiling crossbeam-utils v0.6.3
[INFO] [stderr]    Compiling tokio-executor v0.1.5
[INFO] [stderr]    Compiling rand_isaac v0.1.1
[INFO] [stderr]    Compiling rand_hc v0.1.0
[INFO] [stderr]    Compiling rand_xorshift v0.1.0
[INFO] [stderr]    Compiling unicase v2.2.0
[INFO] [stderr]    Compiling memchr v2.1.2
[INFO] [stderr]    Compiling xml-rs v0.7.0
[INFO] [stderr]    Compiling regex-syntax v0.6.4
[INFO] [stderr]    Compiling backtrace v0.3.13
[INFO] [stderr]    Compiling smallvec v0.6.7
[INFO] [stderr]    Compiling rand_pcg v0.1.1
[INFO] [stderr]    Compiling parking_lot_core v0.3.1
[INFO] [stderr]    Compiling rand_chacha v0.1.0
[INFO] [stderr]    Compiling rand v0.6.1
[INFO] [stderr]    Compiling num-integer v0.1.39
[INFO] [stderr]    Compiling approx v0.3.1
[INFO] [stderr]    Compiling thread_local v0.3.6
[INFO] [stderr]    Compiling matrixmultiply v0.2.2
[INFO] [stderr]    Compiling walkdir v2.2.7
[INFO] [stderr]    Compiling phf_shared v0.7.23
[INFO] [stderr]    Compiling tokio-current-thread v0.1.4
[INFO] [stderr]    Compiling c_string v0.7.0
[INFO] [stderr]    Compiling syn v0.15.26
[INFO] [stderr]    Compiling want v0.0.6
[INFO] [stderr]    Compiling tokio-timer v0.2.8
[INFO] [stderr]    Compiling base64 v0.9.3
[INFO] [stderr]    Compiling num-iter v0.1.37
[INFO] [stdout] error[E0283]: type annotations needed
[INFO] [stdout]    --> /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/c_string-0.7.0/src/c_str.rs:234:84
[INFO] [stdout]     |
[INFO] [stdout] 234 |             format!("invalid data for C string: NUL at position {}", err.position).as_ref())
[INFO] [stdout]     |             -----------------------------------------------------------------------^^^^^^--
[INFO] [stdout]     |             |                                                                      |
[INFO] [stdout]     |             |                                                                      cannot infer type for type parameter `T` declared on the trait `AsRef`
[INFO] [stdout]     |             this method call resolves to `&T`
[INFO] [stdout]     |
[INFO] [stdout]     = note: cannot satisfy `String: AsRef<_>`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to previous error
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0283`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `c_string` due to 2 previous errors
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stderr] error: build failed
[INFO] running `Command { std: "docker" "inspect" "f88ee7f4c54e0240ae7d4c5181bda31f941350dd03bb2358e9bae0a5236b8081", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "f88ee7f4c54e0240ae7d4c5181bda31f941350dd03bb2358e9bae0a5236b8081", kill_on_drop: false }`
[INFO] [stdout] f88ee7f4c54e0240ae7d4c5181bda31f941350dd03bb2358e9bae0a5236b8081