[INFO] fetching crate slam-cv 0.1.3...
[INFO] testing slam-cv-0.1.3 against 1.47.0 for beta-1.48-1
[INFO] extracting crate slam-cv 0.1.3 into /workspace/builds/worker-14/source
[INFO] validating manifest of crates.io crate slam-cv 0.1.3 on toolchain 1.47.0
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.47.0" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking crates.io crate slam-cv 0.1.3
[INFO] finished tweaking crates.io crate slam-cv 0.1.3
[INFO] tweaked toml for crates.io crate slam-cv 0.1.3 written to /workspace/builds/worker-14/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.47.0" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.47.0" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-14/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-14/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" "rustops/crates-build-env@sha256:d92eaeed33fa75130ca1ee6c8a01d1ffb62bac859dfdfb3450e3e5d1c0146529" "/opt/rustwide/cargo-home/bin/cargo" "+1.47.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 16825dc9509e79b4b53e4d2571420ed27ff0a9f1c2e24d563e769ed87fc3f95f
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "16825dc9509e79b4b53e4d2571420ed27ff0a9f1c2e24d563e769ed87fc3f95f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "16825dc9509e79b4b53e4d2571420ed27ff0a9f1c2e24d563e769ed87fc3f95f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "16825dc9509e79b4b53e4d2571420ed27ff0a9f1c2e24d563e769ed87fc3f95f", kill_on_drop: false }`
[INFO] [stdout] 16825dc9509e79b4b53e4d2571420ed27ff0a9f1c2e24d563e769ed87fc3f95f
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-14/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-14/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" "rustops/crates-build-env@sha256:d92eaeed33fa75130ca1ee6c8a01d1ffb62bac859dfdfb3450e3e5d1c0146529" "/opt/rustwide/cargo-home/bin/cargo" "+1.47.0" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] df948ff9ac3fbf18bb9d97c7cd59cae0b6cfab61d0362dc25f1817b2291b3ac0
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "df948ff9ac3fbf18bb9d97c7cd59cae0b6cfab61d0362dc25f1817b2291b3ac0", kill_on_drop: false }`
[INFO] [stderr]    Compiling syn v1.0.44
[INFO] [stderr]    Compiling weezl v0.1.1
[INFO] [stderr]    Compiling bytemuck v1.4.1
[INFO] [stderr]    Compiling sample-consensus v0.2.0
[INFO] [stderr]    Compiling float-ord v0.2.0
[INFO] [stderr]    Compiling num-traits v0.2.12
[INFO] [stderr]    Compiling num-rational v0.3.0
[INFO] [stderr]    Compiling paste-impl v0.1.18
[INFO] [stderr]    Compiling miniz_oxide v0.3.7
[INFO] [stderr]    Compiling num-bigint v0.2.6
[INFO] [stderr]    Compiling deflate v0.8.6
[INFO] [stderr]    Compiling rand_distr v0.2.2
[INFO] [stderr]    Compiling jpeg-decoder v0.1.20
[INFO] [stderr]    Compiling gif v0.11.1
[INFO] [stderr]    Compiling paste v0.1.18
[INFO] [stderr]    Compiling tiff v0.5.0
[INFO] [stderr]    Compiling png v0.16.7
[INFO] [stderr]    Compiling num-integer v0.1.43
[INFO] [stderr]    Compiling num-complex v0.2.4
[INFO] [stderr]    Compiling approx v0.3.2
[INFO] [stderr]    Compiling num-iter v0.1.41
[INFO] [stderr]    Compiling simba v0.1.5
[INFO] [stderr]    Compiling image v0.23.10
[INFO] [stderr]    Compiling num-rational v0.2.4
[INFO] [stderr]    Compiling nalgebra v0.21.1
[INFO] [stderr]    Compiling num v0.2.1
[INFO] [stderr]    Compiling derive_more v0.99.11
[INFO] [stderr]    Compiling cv-core v0.10.0
[INFO] [stderr]    Compiling slam-cv v0.1.3 (/opt/rustwide/workdir)
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the stable release channel
[INFO] [stdout]  --> src/lib.rs:1:1
[INFO] [stdout]   |
[INFO] [stdout] 1 | #![feature(associated_type_defaults)]
[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 `slam-cv`.
[INFO] [stderr] 
[INFO] [stderr] To learn more, run the command again with --verbose.
[INFO] running `Command { std: "docker" "inspect" "df948ff9ac3fbf18bb9d97c7cd59cae0b6cfab61d0362dc25f1817b2291b3ac0", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "df948ff9ac3fbf18bb9d97c7cd59cae0b6cfab61d0362dc25f1817b2291b3ac0", kill_on_drop: false }`
[INFO] [stdout] df948ff9ac3fbf18bb9d97c7cd59cae0b6cfab61d0362dc25f1817b2291b3ac0
