[INFO] cloning repository https://github.com/iamzko/rust_study1
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/iamzko/rust_study1" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fiamzko%2Frust_study1", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fiamzko%2Frust_study1'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] b45adddbf82b679f6b07e532a331a32e77ef8de2
[INFO] testing iamzko/rust_study1 against 1.59.0 for beta-1.60-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fiamzko%2Frust_study1" "/workspace/builds/worker-87/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-87/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/iamzko/rust_study1 on toolchain 1.59.0
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.59.0" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/iamzko/rust_study1
[INFO] finished tweaking git repo https://github.com/iamzko/rust_study1
[INFO] tweaked toml for git repo https://github.com/iamzko/rust_study1 written to /workspace/builds/worker-87/source/Cargo.toml
[INFO] crate git repo https://github.com/iamzko/rust_study1 already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.59.0" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-87/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-87/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@sha256:0cd99ca24d8e8c98e67c542213511d985b8778b5bdcbb160e038429496686047" "/opt/rustwide/cargo-home/bin/cargo" "+1.59.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 8dd2baff6355493f807eb3cc614e1f7ee598283e92ebf21e9966cfbcf09e27e3
[INFO] running `Command { std: "docker" "start" "-a" "8dd2baff6355493f807eb3cc614e1f7ee598283e92ebf21e9966cfbcf09e27e3", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "8dd2baff6355493f807eb3cc614e1f7ee598283e92ebf21e9966cfbcf09e27e3", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "8dd2baff6355493f807eb3cc614e1f7ee598283e92ebf21e9966cfbcf09e27e3", kill_on_drop: false }`
[INFO] [stdout] 8dd2baff6355493f807eb3cc614e1f7ee598283e92ebf21e9966cfbcf09e27e3
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-87/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-87/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@sha256:0cd99ca24d8e8c98e67c542213511d985b8778b5bdcbb160e038429496686047" "/opt/rustwide/cargo-home/bin/cargo" "+1.59.0" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] cb9e12283ffe9a724f92a03f0ce2ff494045c5ec1dada491dd26ea8d4a14a453
[INFO] running `Command { std: "docker" "start" "-a" "cb9e12283ffe9a724f92a03f0ce2ff494045c5ec1dada491dd26ea8d4a14a453", kill_on_drop: false }`
[INFO] [stderr]    Compiling autocfg v1.0.1
[INFO] [stderr]    Compiling libc v0.2.82
[INFO] [stderr]    Compiling cfg-if v1.0.0
[INFO] [stderr]    Compiling libm v0.2.1
[INFO] [stderr]    Compiling cfg-if v0.1.10
[INFO] [stderr]    Compiling lazy_static v1.4.0
[INFO] [stderr]    Compiling bitflags v1.2.1
[INFO] [stderr]    Compiling pkg-config v0.3.19
[INFO] [stderr]    Compiling proc-macro2 v1.0.24
[INFO] [stderr]    Compiling unicode-xid v0.2.1
[INFO] [stderr]    Compiling log v0.4.13
[INFO] [stderr]    Compiling version_check v0.9.2
[INFO] [stderr]    Compiling scopeguard v1.1.0
[INFO] [stderr]    Compiling byteorder v1.4.2
[INFO] [stderr]    Compiling proc-macro2 v0.4.30
[INFO] [stderr]    Compiling unicode-xid v0.1.0
[INFO] [stderr]    Compiling maybe-uninit v2.0.0
[INFO] [stderr]    Compiling getrandom v0.1.16
[INFO] [stderr]    Compiling xml-rs v0.8.3
[INFO] [stderr]    Compiling syn v1.0.60
[INFO] [stderr]    Compiling memchr v2.3.4
[INFO] [stderr]    Compiling ppv-lite86 v0.2.10
[INFO] [stderr]    Compiling slab v0.4.2
[INFO] [stderr]    Compiling cc v1.0.66
[INFO] [stderr]    Compiling once_cell v1.5.2
[INFO] [stderr]    Compiling smallvec v1.6.1
[INFO] [stderr]    Compiling const_fn v0.4.5
[INFO] [stderr]    Compiling syn v0.15.44
[INFO] [stderr]    Compiling downcast-rs v1.2.0
[INFO] [stderr]    Compiling rayon-core v1.9.0
[INFO] [stderr]    Compiling adler32 v1.2.0
[INFO] [stderr]    Compiling semver-parser v0.7.0
[INFO] [stderr]    Compiling typenum v1.12.0
[INFO] [stderr]    Compiling rustc-hash v1.1.0
[INFO] [stderr]    Compiling nix v0.18.0
[INFO] [stderr]    Compiling crc32fast v1.2.1
[INFO] [stderr]    Compiling either v1.6.1
[INFO] [stderr]    Compiling proc-macro-hack v0.5.19
[INFO] [stderr]    Compiling linked-hash-map v0.5.4
[INFO] [stderr]    Compiling nix v0.14.1
[INFO] [stderr]    Compiling proc-macro-nested v0.1.7
[INFO] [stderr]    Compiling color_quant v1.1.0
[INFO] [stderr]    Compiling futures-core v0.3.12
[INFO] [stderr]    Compiling void v1.0.2
[INFO] [stderr]    Compiling scoped-tls v1.0.0
[INFO] [stderr]    Compiling futures-sink v0.3.12
[INFO] [stderr]    Compiling pin-utils v0.1.0
[INFO] [stderr]    Compiling paste v1.0.4
[INFO] [stderr]    Compiling futures-io v0.3.12
[INFO] [stderr]    Compiling lazycell v1.3.0
[INFO] [stderr]    Compiling pin-project-lite v0.2.4
[INFO] [stderr]    Compiling same-file v1.0.6
[INFO] [stderr]    Compiling scoped_threadpool v0.1.9
[INFO] [stderr]    Compiling vec_map v0.8.2
[INFO] [stderr]    Compiling static_assertions v1.1.0
[INFO] [stderr]    Compiling atom v0.3.6
[INFO] [stderr]    Compiling float-ord v0.2.0
[INFO] [stderr]    Compiling unicode-segmentation v1.7.1
[INFO] [stderr]    Compiling arrayvec v0.4.12
[INFO] [stderr]    Compiling arrayvec v0.5.2
[INFO] [stderr]    Compiling adler v0.2.3
[INFO] [stderr]    Compiling sample-consensus v1.0.1
[INFO] [stderr]    Compiling weezl v0.1.3
[INFO] [stderr]    Compiling colorful v0.2.1
[INFO] [stderr]    Compiling num-derive v0.2.5
[INFO] [stderr]    Compiling nodrop v0.1.14
[INFO] [stderr]    Compiling ucd-trie v0.1.3
[INFO] [stderr]    Compiling lzw v0.10.0
[INFO] [stderr]    Compiling copyless v0.1.5
[INFO] [stderr]    Compiling xdg v2.2.0
[INFO] [stderr]    Compiling xi-unicode v0.2.1
[INFO] [stderr]    Compiling iced_core v0.2.1
[INFO] [stderr]    Compiling glam v0.8.7
[INFO] [stderr]    Compiling bytemuck v1.5.0
[INFO] [stderr]    Compiling hamming v0.1.3
[INFO] [stderr]    Compiling percent-encoding v2.1.0
[INFO] [stderr]    Compiling rawpointer v0.2.1
[INFO] [stderr]    Compiling unicode-width v0.1.8
[INFO] [stderr]    Compiling svg_fmt v0.2.1
[INFO] [stderr]    Compiling ndarray v0.13.1
[INFO] [stderr]    Compiling matrixmultiply v0.1.15
[INFO] [stderr]    Compiling ansi_term v0.11.0
[INFO] [stderr]    Compiling primal-estimate v0.3.1
[INFO] [stderr]    Compiling serde v1.0.123
[INFO] [stderr]    Compiling space v0.10.3
[INFO] [stderr]    Compiling strsim v0.8.0
[INFO] [stderr]    Compiling ttf-parser v0.6.2
[INFO] [stderr]    Compiling rawpointer v0.1.0
[INFO] [stderr]    Compiling ahash v0.3.8
[INFO] [stderr]    Compiling ryu v1.0.5
[INFO] [stderr]    Compiling custom_derive v0.1.7
[INFO] [stderr]    Compiling regex-automata v0.1.10
[INFO] [stderr]    Compiling ab_glyph_rasterizer v0.1.4
[INFO] [stderr]    Compiling itoa v0.4.8
[INFO] [stderr]    Compiling libloading v0.6.7
[INFO] [stderr]    Compiling instant v0.1.9
[INFO] [stderr]    Compiling lock_api v0.3.4
[INFO] [stderr]    Compiling futures-task v0.3.12
[INFO] [stderr]    Compiling bitarray v0.2.6
[INFO] [stderr] error: could not compile `pkg-config`
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   process didn't exit successfully: `rustc --crate-name pkg_config /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/pkg-config-0.3.19/src/lib.rs --error-format=json --json=diagnostic-rendered-ansi,future-incompat --crate-type lib --emit=dep-info,metadata,link -C embed-bitcode=no -C debuginfo=2 -C metadata=7224430b2212367e -C extra-filename=-7224430b2212367e --out-dir /opt/rustwide/target/debug/deps -L dependency=/opt/rustwide/target/debug/deps --cap-lints allow --cap-lints=warn` (signal: 9, SIGKILL: kill)
[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]  --> /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/bitarray-0.2.6/src/lib.rs:2:1
[INFO] [stdout]   |
[INFO] [stdout] 2 | #![feature(min_const_generics)]
[INFO] [stdout]   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: remove the attribute
[INFO] [stdout]   |
[INFO] [stdout]   = help: the feature `min_const_generics` has been stable since 1.51.0 and no longer requires an attribute to enable
[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 E0554`.
[INFO] [stdout] 
[INFO] [stderr] error: build failed
[INFO] running `Command { std: "docker" "inspect" "cb9e12283ffe9a724f92a03f0ce2ff494045c5ec1dada491dd26ea8d4a14a453", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "cb9e12283ffe9a724f92a03f0ce2ff494045c5ec1dada491dd26ea8d4a14a453", kill_on_drop: false }`
[INFO] [stdout] cb9e12283ffe9a724f92a03f0ce2ff494045c5ec1dada491dd26ea8d4a14a453