[INFO] cloning repository https://github.com/Aetf/InferSim
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/Aetf/InferSim" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FAetf%2FInferSim", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FAetf%2FInferSim'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] f274154ad0cbafd29914331fffd0c10bd96247d0
[INFO] testing Aetf/InferSim against 1.60.0 for beta-1.61-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FAetf%2FInferSim" "/workspace/builds/worker-13/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-13/source'...
[INFO] [stderr] done.
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[INFO] validating manifest of git repo https://github.com/Aetf/InferSim on toolchain 1.60.0
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.60.0" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] removed /workspace/builds/worker-13/source/.cargo/config.toml
[INFO] removed /workspace/builds/worker-13/source/rust-toolchain
[INFO] started tweaking git repo https://github.com/Aetf/InferSim
[INFO] finished tweaking git repo https://github.com/Aetf/InferSim
[INFO] tweaked toml for git repo https://github.com/Aetf/InferSim written to /workspace/builds/worker-13/source/Cargo.toml
[INFO] crate git repo https://github.com/Aetf/InferSim already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.60.0" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded tracing-appender v0.1.2
[INFO] [stderr]   Downloaded structmeta-derive v0.1.3
[INFO] [stderr]   Downloaded assert_cmd v1.0.3
[INFO] [stderr]   Downloaded color-backtrace v0.5.1
[INFO] [stderr]   Downloaded backtrace v0.3.58
[INFO] [stderr]   Downloaded statrs v0.14.0
[INFO] [stderr]   Downloaded rand_seeder v0.2.2
[INFO] [stderr]   Downloaded rand_distr v0.4.0
[INFO] [stderr]   Downloaded structmeta v0.1.3
[INFO] [stderr]   Downloaded nuts v0.2.1
[INFO] [stderr]   Downloaded gen-iter v0.2.0
[INFO] [stderr]   Downloaded parse-display-derive v0.5.0
[INFO] [stderr]   Downloaded parse-display v0.5.0
[INFO] [stderr]   Downloaded simba v0.4.0
[INFO] [stderr]   Downloaded predicates v1.0.7
[INFO] [stderr]   Downloaded educe v0.4.16
[INFO] [stderr]   Downloaded nalgebra v0.26.2
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-13/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-13/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:b0c94ce3c1162fcb8e57cac5b65ec2f72eabb1eebea4fcc35e269e823f681646" "/opt/rustwide/cargo-home/bin/cargo" "+1.60.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] ce8c0da06963eaeb1f8da267a7992ce81051600683f7efc033e3a4b4e617c063
[INFO] running `Command { std: "docker" "start" "-a" "ce8c0da06963eaeb1f8da267a7992ce81051600683f7efc033e3a4b4e617c063", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "ce8c0da06963eaeb1f8da267a7992ce81051600683f7efc033e3a4b4e617c063", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "ce8c0da06963eaeb1f8da267a7992ce81051600683f7efc033e3a4b4e617c063", kill_on_drop: false }`
[INFO] [stdout] ce8c0da06963eaeb1f8da267a7992ce81051600683f7efc033e3a4b4e617c063
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-13/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-13/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:b0c94ce3c1162fcb8e57cac5b65ec2f72eabb1eebea4fcc35e269e823f681646" "/opt/rustwide/cargo-home/bin/cargo" "+1.60.0" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] e34362b372240938f822d28cafe6077fe0cdd2837d4459406fa3dc3dcbafa9b0
[INFO] running `Command { std: "docker" "start" "-a" "e34362b372240938f822d28cafe6077fe0cdd2837d4459406fa3dc3dcbafa9b0", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]    Compiling syn v1.0.70
[INFO] [stderr]    Compiling serde_derive v1.0.125
[INFO] [stderr]    Compiling serde v1.0.125
[INFO] [stderr]    Compiling regex-syntax v0.6.23
[INFO] [stderr]    Compiling getrandom v0.2.2
[INFO] [stderr]    Compiling lexical-core v0.7.6
[INFO] [stderr]    Compiling arrayvec v0.5.2
[INFO] [stderr]    Compiling gimli v0.23.0
[INFO] [stderr]    Compiling unicode-segmentation v1.7.1
[INFO] [stderr]    Compiling paste v1.0.5
[INFO] [stderr]    Compiling object v0.23.0
[INFO] [stderr]    Compiling anyhow v1.0.40
[INFO] [stderr]    Compiling rustc-demangle v0.1.18
[INFO] [stderr]    Compiling nuts v0.2.1
[INFO] [stderr]    Compiling gen-iter v0.2.0
[INFO] [stderr]    Compiling num-traits v0.2.14
[INFO] [stderr]    Compiling crossbeam-utils v0.8.3
[INFO] [stderr]    Compiling num-bigint v0.4.0
[INFO] [stderr]    Compiling tracing-core v0.1.17
[INFO] [stderr]    Compiling matrixmultiply v0.3.1
[INFO] [stderr]    Compiling backtrace v0.3.58
[INFO] [stderr]    Compiling nom v5.1.2
[INFO] [stderr]    Compiling thread_local v1.1.3
[INFO] [stderr]    Compiling sharded-slab v0.1.1
[INFO] [stderr]    Compiling itertools v0.10.0
[INFO] [stderr]    Compiling proc-macro2 v1.0.26
[INFO] [stderr]    Compiling atty v0.2.14
[INFO] [stderr]    Compiling time v0.1.43
[INFO] [stderr]    Compiling csv-core v0.1.10
[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/gen-iter-0.2.0/src/lib.rs:33:1
[INFO] [stdout]    |
[INFO] [stdout] 33 | #![feature(generators, generator_trait)]
[INFO] [stdout]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]    Compiling clap v2.33.3
[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 `gen-iter` 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" "e34362b372240938f822d28cafe6077fe0cdd2837d4459406fa3dc3dcbafa9b0", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "e34362b372240938f822d28cafe6077fe0cdd2837d4459406fa3dc3dcbafa9b0", kill_on_drop: false }`
[INFO] [stdout] e34362b372240938f822d28cafe6077fe0cdd2837d4459406fa3dc3dcbafa9b0