[INFO] cloning repository https://github.com/1000teslas/sparse_matrix
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/1000teslas/sparse_matrix" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2F1000teslas%2Fsparse_matrix", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2F1000teslas%2Fsparse_matrix'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 330c7c725f97f63f95546d66b4599c3fa1a73ea5
[INFO] testing 1000teslas/sparse_matrix against beta-2021-09-08 for beta-1.56-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2F1000teslas%2Fsparse_matrix" "/workspace/builds/worker-40/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-40/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/1000teslas/sparse_matrix on toolchain beta-2021-09-08
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2021-09-08" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] removed /workspace/builds/worker-40/source/rust-toolchain.toml
[INFO] started tweaking git repo https://github.com/1000teslas/sparse_matrix
[INFO] finished tweaking git repo https://github.com/1000teslas/sparse_matrix
[INFO] tweaked toml for git repo https://github.com/1000teslas/sparse_matrix written to /workspace/builds/worker-40/source/Cargo.toml
[INFO] crate git repo https://github.com/1000teslas/sparse_matrix already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2021-09-08" "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/Andlon/mkl-sys`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded rusty-fork v0.3.0
[INFO] [stderr]   Downloaded fastrand v1.5.0
[INFO] [stderr]   Downloaded arbitrary v1.0.1
[INFO] [stderr]   Downloaded cap-std v0.16.3
[INFO] [stderr]   Downloaded unsafe-io v0.7.1
[INFO] [stderr]   Downloaded num_enum_derive v0.5.4
[INFO] [stderr]   Downloaded winx v0.27.0
[INFO] [stderr]   Downloaded maybe-owned v0.3.4
[INFO] [stderr]   Downloaded unsafe-io v0.8.2
[INFO] [stderr]   Downloaded ambient-authority v0.0.1
[INFO] [stderr]   Downloaded io-lifetimes v0.2.4
[INFO] [stderr]   Downloaded rsix v0.18.0
[INFO] [stderr]   Downloaded cap-primitives v0.17.0
[INFO] [stderr]   Downloaded cap-rand v0.17.0
[INFO] [stderr]   Downloaded cstr v0.2.8
[INFO] [stderr]   Downloaded num_enum v0.5.4
[INFO] [stderr]   Downloaded fs-set-times v0.7.1
[INFO] [stderr]   Downloaded winx v0.28.0
[INFO] [stderr]   Downloaded cap-std v0.17.0
[INFO] [stderr]   Downloaded linux-raw-sys v0.0.19
[INFO] [stderr]   Downloaded fs-set-times v0.6.0
[INFO] [stderr]   Downloaded linux-raw-sys v0.0.12
[INFO] [stderr]   Downloaded posish v0.16.0
[INFO] [stderr]   Downloaded cap-primitives v0.16.3
[INFO] [stderr]   Downloaded open-ambient v0.0.1
[INFO] [stderr]   Downloaded fuzzcheck_common v0.7.0
[INFO] [stderr]   Downloaded proptest v1.0.0
[INFO] [stderr]   Downloaded decent-synquote-alternative v0.4.0
[INFO] [stderr]   Downloaded fuzzcheck_mutators_derive v0.7.0
[INFO] [stderr]   Downloaded fuzzcheck v0.7.4
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-40/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-40/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" "+beta-2021-09-08" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 8114b4e4434f90f888d9e0c065394e7057988e7dc47f65716ab8d500c4d82512
[INFO] running `Command { std: "docker" "start" "-a" "8114b4e4434f90f888d9e0c065394e7057988e7dc47f65716ab8d500c4d82512", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "8114b4e4434f90f888d9e0c065394e7057988e7dc47f65716ab8d500c4d82512", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "8114b4e4434f90f888d9e0c065394e7057988e7dc47f65716ab8d500c4d82512", kill_on_drop: false }`
[INFO] [stdout] 8114b4e4434f90f888d9e0c065394e7057988e7dc47f65716ab8d500c4d82512
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-40/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-40/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" "+beta-2021-09-08" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] b72bdfce5eb99a43bc451727827b82c03e71b1f6bac25368f3b29e79ea97b451
[INFO] running `Command { std: "docker" "start" "-a" "b72bdfce5eb99a43bc451727827b82c03e71b1f6bac25368f3b29e79ea97b451", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]    Compiling libc v0.2.100
[INFO] [stderr]    Compiling proc-macro2 v1.0.28
[INFO] [stderr]    Compiling unicode-xid v0.2.2
[INFO] [stderr]    Compiling syn v1.0.75
[INFO] [stderr]    Compiling crossbeam-utils v0.8.5
[INFO] [stderr]    Compiling remove_dir_all v0.5.3
[INFO] [stderr]    Compiling crossbeam-epoch v0.9.5
[INFO] [stderr]    Compiling quick-error v1.2.3
[INFO] [stderr]    Compiling bit-vec v0.6.3
[INFO] [stderr]    Compiling fnv v1.0.7
[INFO] [stderr]    Compiling quick-error v2.0.1
[INFO] [stderr]    Compiling rayon-core v1.9.1
[INFO] [stderr]    Compiling byteorder v1.4.3
[INFO] [stderr]    Compiling regex-syntax v0.6.25
[INFO] [stderr]    Compiling scopeguard v1.1.0
[INFO] [stderr]    Compiling version_check v0.9.3
[INFO] [stderr]    Compiling memchr v2.4.1
[INFO] [stderr]    Compiling minimal-lexical v0.1.2
[INFO] [stderr]    Compiling bitflags v1.3.2
[INFO] [stderr]    Compiling either v1.6.1
[INFO] [stderr]    Compiling convert_case v0.4.0
[INFO] [stderr]    Compiling custom_derive v0.1.7
[INFO] [stderr]    Compiling ambient-authority v0.0.1
[INFO] [stderr]    Compiling linprobe v0.1.0 (/opt/rustwide/workdir/linprobe)
[INFO] [stderr]    Compiling num-traits v0.2.14
[INFO] [stderr]    Compiling memoffset v0.6.4
[INFO] [stderr]    Compiling num-integer v0.1.44
[INFO] [stderr]    Compiling rayon v1.5.1
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the beta release channel
[INFO] [stdout]  --> linprobe/src/lib.rs:1:1
[INFO] [stdout]   |
[INFO] [stdout] 1 | #![feature(allocator_api)]
[INFO] [stdout]   | ^^^^^^^^^^^^^^^^^^^^^^^^^^
[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: could not compile `linprobe` 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" "b72bdfce5eb99a43bc451727827b82c03e71b1f6bac25368f3b29e79ea97b451", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "b72bdfce5eb99a43bc451727827b82c03e71b1f6bac25368f3b29e79ea97b451", kill_on_drop: false }`
[INFO] [stdout] b72bdfce5eb99a43bc451727827b82c03e71b1f6bac25368f3b29e79ea97b451