[INFO] cloning repository https://github.com/Andrepuel/icepipe
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/Andrepuel/icepipe" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FAndrepuel%2Ficepipe", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FAndrepuel%2Ficepipe'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 5b7cfa13306d78342a007fa04ebbcb91e9d08f61
[INFO] checking Andrepuel/icepipe against beta-2021-10-15 for beta-1.56-3
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FAndrepuel%2Ficepipe" "/workspace/builds/worker-3/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-3/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/Andrepuel/icepipe on toolchain beta-2021-10-15
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2021-10-15" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/Andrepuel/icepipe
[INFO] finished tweaking git repo https://github.com/Andrepuel/icepipe
[INFO] tweaked toml for git repo https://github.com/Andrepuel/icepipe written to /workspace/builds/worker-3/source/Cargo.toml
[INFO] crate git repo https://github.com/Andrepuel/icepipe already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2021-10-15" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded tokio-macros v1.3.0
[INFO] [stderr]   Downloaded untrusted v0.7.1
[INFO] [stderr]   Downloaded tokio-rustls v0.22.0
[INFO] [stderr]   Downloaded md-5 v0.9.1
[INFO] [stderr]   Downloaded rustls-native-certs v0.5.0
[INFO] [stderr]   Downloaded rustls v0.19.1
[INFO] [stderr]   Downloaded security-framework v2.3.1
[INFO] [stderr]   Downloaded env_logger v0.9.0
[INFO] [stderr]   Downloaded ipnet v2.3.1
[INFO] [stderr]   Downloaded crc-catalog v1.1.1
[INFO] [stderr]   Downloaded uuid v0.8.2
[INFO] [stderr]   Downloaded webrtc-mdns v0.2.14
[INFO] [stderr]   Downloaded nix v0.8.1
[INFO] [stderr]   Downloaded webrtc-sctp v0.2.3
[INFO] [stderr]   Downloaded crc v2.0.0
[INFO] [stderr]   Downloaded bitflags v0.7.0
[INFO] [stderr]   Downloaded waitgroup v0.1.2
[INFO] [stderr]   Downloaded webrtc-ice v0.2.4
[INFO] [stderr]   Downloaded turn v0.2.4
[INFO] [stderr]   Downloaded webrtc-util v0.2.4
[INFO] [stderr]   Downloaded tungstenite v0.14.0
[INFO] [stderr]   Downloaded security-framework-sys v2.3.0
[INFO] [stderr]   Downloaded sha-1 v0.9.7
[INFO] [stderr]   Downloaded tokio-tungstenite v0.15.0
[INFO] [stderr]   Downloaded ring v0.16.20
[INFO] [stderr]   Downloaded stun v0.2.4
[INFO] [stderr]   Downloaded utf-8 v0.7.6
[INFO] [stderr]   Downloaded spin v0.5.2
[INFO] [stderr]   Downloaded openssl-probe v0.1.4
[INFO] [stderr]   Downloaded sct v0.6.1
[INFO] [stderr]   Downloaded schannel v0.1.19
[INFO] [stderr]   Downloaded webpki v0.21.4
[INFO] [stderr]   Downloaded webpki-roots v0.21.1
[INFO] [stderr]   Downloaded subtle v2.4.1
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/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-2021-10-15" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 72743136c6df096239c2dded6cbc2268c7ba1130179ae7ef9e78f3cf4e7b3bde
[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" "72743136c6df096239c2dded6cbc2268c7ba1130179ae7ef9e78f3cf4e7b3bde", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "72743136c6df096239c2dded6cbc2268c7ba1130179ae7ef9e78f3cf4e7b3bde", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "72743136c6df096239c2dded6cbc2268c7ba1130179ae7ef9e78f3cf4e7b3bde", kill_on_drop: false }`
[INFO] [stdout] 72743136c6df096239c2dded6cbc2268c7ba1130179ae7ef9e78f3cf4e7b3bde
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/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-2021-10-15" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] 454677bab840f647c428316f0a9a2ae74f709fd75310672c967fd68409208569
[INFO] running `Command { std: "docker" "start" "-a" "454677bab840f647c428316f0a9a2ae74f709fd75310672c967fd68409208569", kill_on_drop: false }`
[INFO] [stderr]    Compiling futures-core v0.3.15
[INFO] [stderr]     Checking futures-sink v0.3.15
[INFO] [stderr]     Checking waitgroup v0.1.2
[INFO] [stderr]     Checking nix v0.8.1
[INFO] [stderr]     Checking socket2 v0.4.0
[INFO] [stderr]     Checking uuid v0.8.2
[INFO] [stderr]    Compiling async-trait v0.1.50
[INFO] [stderr]     Checking rustls v0.19.1
[INFO] [stderr]     Checking tokio v1.8.1
[INFO] [stderr]     Checking sha-1 v0.9.7
[INFO] [stderr]     Checking futures-util v0.3.15
[INFO] [stderr]     Checking rustls-native-certs v0.5.0
[INFO] [stderr]     Checking tungstenite v0.14.0
[INFO] [stderr]     Checking webrtc-util v0.2.4
[INFO] [stderr]     Checking tokio-rustls v0.22.0
[INFO] [stderr]     Checking tokio-tungstenite v0.15.0
[INFO] [stderr]     Checking stun v0.2.4
[INFO] [stderr]     Checking webrtc-mdns v0.2.14
[INFO] [stderr]     Checking webrtc-sctp v0.2.3
[INFO] [stderr]     Checking turn v0.2.4
[INFO] [stderr]     Checking webrtc-ice v0.2.4
[INFO] [stderr]     Checking icepipe v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the beta release channel
[INFO] [stdout]  --> src/main.rs:1:1
[INFO] [stdout]   |
[INFO] [stdout] 1 | #![feature(backtrace)]
[INFO] [stdout]   | ^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the beta release channel
[INFO] [stdout]  --> src/main.rs:1:1
[INFO] [stdout]   |
[INFO] [stdout] 1 | #![feature(backtrace)]
[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 `icepipe` due to 2 previous errors
[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 E0554`.
[INFO] [stdout] 
[INFO] [stderr] error: build failed
[INFO] running `Command { std: "docker" "inspect" "454677bab840f647c428316f0a9a2ae74f709fd75310672c967fd68409208569", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "454677bab840f647c428316f0a9a2ae74f709fd75310672c967fd68409208569", kill_on_drop: false }`
[INFO] [stdout] 454677bab840f647c428316f0a9a2ae74f709fd75310672c967fd68409208569