[INFO] cloning repository https://github.com/MOZGIII/netsound
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/MOZGIII/netsound" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FMOZGIII%2Fnetsound", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FMOZGIII%2Fnetsound'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 4be69407a2286d8c74aaf2e5e88127cee566325c
[INFO] checking MOZGIII/netsound against master#dfd7b8d03fb93d0e03147d28b3be6d93260fa94d for pr-87050
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FMOZGIII%2Fnetsound" "/workspace/builds/worker-2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-2/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/MOZGIII/netsound on toolchain dfd7b8d03fb93d0e03147d28b3be6d93260fa94d
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+dfd7b8d03fb93d0e03147d28b3be6d93260fa94d" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] removed /workspace/builds/worker-2/source/rust-toolchain
[INFO] started tweaking git repo https://github.com/MOZGIII/netsound
[INFO] finished tweaking git repo https://github.com/MOZGIII/netsound
[INFO] tweaked toml for git repo https://github.com/MOZGIII/netsound written to /workspace/builds/worker-2/source/Cargo.toml
[INFO] crate git repo https://github.com/MOZGIII/netsound already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+dfd7b8d03fb93d0e03147d28b3be6d93260fa94d" "fetch" "--manifest-path" "Cargo.toml", 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] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/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@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+dfd7b8d03fb93d0e03147d28b3be6d93260fa94d" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 46e2d701c5e9271edc38d0978077b28ec0d8e32ec3bcd08254b330cec329bfcc
[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" "46e2d701c5e9271edc38d0978077b28ec0d8e32ec3bcd08254b330cec329bfcc", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "46e2d701c5e9271edc38d0978077b28ec0d8e32ec3bcd08254b330cec329bfcc", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "46e2d701c5e9271edc38d0978077b28ec0d8e32ec3bcd08254b330cec329bfcc", kill_on_drop: false }`
[INFO] [stdout] 46e2d701c5e9271edc38d0978077b28ec0d8e32ec3bcd08254b330cec329bfcc
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/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=forbid" "-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@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+dfd7b8d03fb93d0e03147d28b3be6d93260fa94d" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 76395a6345cc232fa724a766c1899fb7bff1d8384df4540d2d1b4524ce310a3a
[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" "76395a6345cc232fa724a766c1899fb7bff1d8384df4540d2d1b4524ce310a3a", kill_on_drop: false }`
[INFO] [stderr]    Compiling unicode-xid v0.2.1
[INFO] [stderr]    Compiling autocfg v1.0.1
[INFO] [stderr]     Checking cfg-if v1.0.0
[INFO] [stderr]     Checking lazy_static v1.4.0
[INFO] [stderr]     Checking dasp_sample v0.11.0
[INFO] [stderr]    Compiling pkg-config v0.3.19
[INFO] [stderr]     Checking arc-swap v1.2.0
[INFO] [stderr]     Checking futures-core v0.3.13
[INFO] [stderr]    Compiling ryu v1.0.5
[INFO] [stderr]     Checking futures-io v0.3.13
[INFO] [stderr]     Checking futures-task v0.3.13
[INFO] [stderr]     Checking pin-utils v0.1.0
[INFO] [stderr]     Checking slab v0.4.2
[INFO] [stderr]     Checking dasp_ring_buffer v0.11.0
[INFO] [stderr]    Compiling bitflags v1.2.1
[INFO] [stderr]     Checking itoa v0.4.7
[INFO] [stderr]    Compiling version_check v0.9.2
[INFO] [stderr]     Checking bytes v1.0.1
[INFO] [stderr]     Checking void v1.0.2
[INFO] [stderr]     Checking cfg-if v0.1.10
[INFO] [stderr]     Checking unicode-width v0.1.8
[INFO] [stderr]    Compiling proc-macro2 v1.0.24
[INFO] [stderr]     Checking log v0.4.14
[INFO] [stderr]     Checking dirs-sys-next v0.1.2
[INFO] [stderr]     Checking futures-channel v0.3.13
[INFO] [stderr]     Checking slog-scope v4.4.0
[INFO] [stderr]     Checking regex v1.4.3
[INFO] [stderr]     Checking textwrap v0.11.0
[INFO] [stderr]     Checking dasp_frame v0.11.0
[INFO] [stderr]     Checking dasp_window v0.11.0
[INFO] [stderr]     Checking dirs-next v2.0.0
[INFO] [stderr]     Checking mio v0.7.9
[INFO] [stderr]     Checking slog-stdlog v4.1.0
[INFO] [stderr]     Checking slog-scope-futures v0.1.1
[INFO] [stderr]     Checking nix v0.15.0
[INFO] [stderr]     Checking clap v2.33.3
[INFO] [stderr]    Compiling num-traits v0.2.14
[INFO] [stderr]    Compiling num-integer v0.1.44
[INFO] [stderr]    Compiling crossbeam-utils v0.8.3
[INFO] [stderr]    Compiling tokio v1.2.0
[INFO] [stderr]    Compiling proc-macro-error-attr v1.0.4
[INFO] [stderr]    Compiling proc-macro-error v1.0.4
[INFO] [stderr]     Checking term v0.7.0
[INFO] [stderr]    Compiling quote v1.0.9
[INFO] [stderr]    Compiling alsa-sys v0.3.1
[INFO] [stderr]    Compiling audiopus_sys v0.1.8
[INFO] [stderr]    Compiling syn v1.0.60
[INFO] [stderr]     Checking dasp_rms v0.11.0
[INFO] [stderr]     Checking dasp_peak v0.11.0
[INFO] [stderr]     Checking dasp_interpolate v0.11.0
[INFO] [stderr]     Checking dasp_envelope v0.11.0
[INFO] [stderr]     Checking audiopus v0.2.0
[INFO] [stderr]     Checking crossbeam-channel v0.5.0
[INFO] [stderr]     Checking dasp_signal v0.11.0
[INFO] [stderr]     Checking slog-async v2.6.0
[INFO] [stderr]     Checking chrono v0.4.19
[INFO] [stderr]     Checking alsa v0.4.3
[INFO] [stderr]     Checking slog-term v2.8.0
[INFO] [stderr]     Checking slog-envlogger v2.2.0
[INFO] [stderr]    Compiling futures-macro v0.3.13
[INFO] [stderr]    Compiling serde_derive v1.0.123
[INFO] [stderr]    Compiling thiserror-impl v1.0.24
[INFO] [stderr]    Compiling async-trait v0.1.42
[INFO] [stderr]    Compiling derivative v2.2.0
[INFO] [stderr]    Compiling slog_derive v0.2.0
[INFO] [stderr]    Compiling paw-attributes v1.0.2
[INFO] [stderr]    Compiling pin-project-internal v1.0.5
[INFO] [stderr]    Compiling structopt-derive v0.4.14
[INFO] [stderr]     Checking paw v1.0.0
[INFO] [stderr]     Checking futures-util v0.3.13
[INFO] [stderr]     Checking thiserror v1.0.24
[INFO] [stderr]     Checking pin-project v1.0.5
[INFO] [stderr]     Checking cpal v0.13.1
[INFO] [stderr]     Checking structopt v0.3.21
[INFO] [stderr]     Checking futures-executor v0.3.13
[INFO] [stderr]     Checking futures v0.3.13
[INFO] [stderr]     Checking futures-test v0.3.13
[INFO] [stderr]     Checking serde v1.0.123
[INFO] [stderr]     Checking serde_json v1.0.63
[INFO] [stderr]     Checking slog-json v2.3.0
[INFO] [stderr]     Checking slog-env-cfg v0.6.0
[INFO] [stderr]     Checking netsound-core v0.1.0 (/opt/rustwide/workdir/netsound-core)
[INFO] [stdout] error[E0557]: feature has been removed
[INFO] [stdout]  --> netsound-core/src/lib.rs:2:12
[INFO] [stdout]   |
[INFO] [stdout] 2 | #![feature(const_fn)]
[INFO] [stdout]   |            ^^^^^^^^ feature has been removed
[INFO] [stdout]   |
[INFO] [stdout]   = note: split into finer-grained feature gates
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0557]: feature has been removed
[INFO] [stdout]  --> netsound-core/src/lib.rs:2:12
[INFO] [stdout]   |
[INFO] [stdout] 2 | #![feature(const_fn)]
[INFO] [stdout]   |            ^^^^^^^^ feature has been removed
[INFO] [stdout]   |
[INFO] [stdout]   = note: split into finer-grained feature gates
[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 E0557`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `netsound-core`
[INFO] [stderr] 
[INFO] [stderr] To learn more, run the command again with --verbose.
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stdout] error: aborting due to previous error
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0557`.
[INFO] [stdout] 
[INFO] [stderr] error: build failed
[INFO] running `Command { std: "docker" "inspect" "76395a6345cc232fa724a766c1899fb7bff1d8384df4540d2d1b4524ce310a3a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "76395a6345cc232fa724a766c1899fb7bff1d8384df4540d2d1b4524ce310a3a", kill_on_drop: false }`
[INFO] [stdout] 76395a6345cc232fa724a766c1899fb7bff1d8384df4540d2d1b4524ce310a3a