[INFO] cloning repository https://github.com/netvl/git-pull-requests
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/netvl/git-pull-requests" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fnetvl%2Fgit-pull-requests", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fnetvl%2Fgit-pull-requests'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 019dad2675523d2fe1eda0bb22cfde7662a12495
[INFO] checking netvl/git-pull-requests against master#cfbc6d4cf1acbac5c025acf8ed68929caa551df3 for pr-75494-beta
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fnetvl%2Fgit-pull-requests" "/workspace/builds/worker-12/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-12/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/netvl/git-pull-requests on toolchain cfbc6d4cf1acbac5c025acf8ed68929caa551df3
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+cfbc6d4cf1acbac5c025acf8ed68929caa551df3" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/netvl/git-pull-requests
[INFO] finished tweaking git repo https://github.com/netvl/git-pull-requests
[INFO] tweaked toml for git repo https://github.com/netvl/git-pull-requests written to /workspace/builds/worker-12/source/Cargo.toml
[INFO] crate git repo https://github.com/netvl/git-pull-requests already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+cfbc6d4cf1acbac5c025acf8ed68929caa551df3" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr] error: the lock file /workspace/builds/worker-12/source/Cargo.lock needs to be updated but --locked was passed to prevent this
[INFO] [stderr] If you want to try to generate the lock file without accessing the network, use the --offline flag.
[INFO] the lockfile is outdated, regenerating it
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+cfbc6d4cf1acbac5c025acf8ed68929caa551df3" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+cfbc6d4cf1acbac5c025acf8ed68929caa551df3" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded fern v0.6.0
[INFO] [stderr]   Downloaded libssh2-sys v0.2.19
[INFO] [stderr]   Downloaded libgit2-sys v0.12.12+1.0.1
[INFO] [stderr]   Downloaded regex_macros v0.2.0
[INFO] [stderr]   Downloaded git2 v0.13.10
[INFO] [stderr]   Downloaded docopt_macros v0.8.1
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/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:a636fd89d022f18117e1dc8fb37a0a009933cdbbe082814857f0e2024962d47c" "/opt/rustwide/cargo-home/bin/cargo" "+cfbc6d4cf1acbac5c025acf8ed68929caa551df3" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 279efbeac19dd3fc6e5b17f2081d02fb99cced0ebc13a21b49fce7106ef54c86
[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" "279efbeac19dd3fc6e5b17f2081d02fb99cced0ebc13a21b49fce7106ef54c86", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "279efbeac19dd3fc6e5b17f2081d02fb99cced0ebc13a21b49fce7106ef54c86", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "279efbeac19dd3fc6e5b17f2081d02fb99cced0ebc13a21b49fce7106ef54c86", kill_on_drop: false }`
[INFO] [stdout] 279efbeac19dd3fc6e5b17f2081d02fb99cced0ebc13a21b49fce7106ef54c86
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/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" "rustops/crates-build-env@sha256:a636fd89d022f18117e1dc8fb37a0a009933cdbbe082814857f0e2024962d47c" "/opt/rustwide/cargo-home/bin/cargo" "+cfbc6d4cf1acbac5c025acf8ed68929caa551df3" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] c4ec7db85acb32212e88638e67dd01f6ec2aec4c5d84fcdf03db4e4f591ddcbd
[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" "c4ec7db85acb32212e88638e67dd01f6ec2aec4c5d84fcdf03db4e4f591ddcbd", kill_on_drop: false }`
[INFO] [stderr]    Compiling pkg-config v0.3.18
[INFO] [stderr]    Compiling proc-macro2 v1.0.19
[INFO] [stderr]    Compiling unicode-xid v0.2.1
[INFO] [stderr]    Compiling autocfg v1.0.1
[INFO] [stderr]    Compiling syn v1.0.39
[INFO] [stderr]    Compiling serde_derive v1.0.115
[INFO] [stderr]    Compiling regex v0.2.11
[INFO] [stderr]    Compiling ucd-util v0.1.8
[INFO] [stderr]    Compiling log v0.4.11
[INFO] [stderr]     Checking tinyvec v0.3.4
[INFO] [stderr]    Compiling strsim v0.6.0
[INFO] [stderr]     Checking strsim v0.9.3
[INFO] [stderr]    Compiling regex-syntax v0.4.2
[INFO] [stderr]     Checking either v1.6.0
[INFO] [stderr]    Compiling memchr v2.3.3
[INFO] [stderr]    Compiling libc v0.2.76
[INFO] [stderr]     Checking aho-corasick v0.7.13
[INFO] [stderr]     Checking itertools v0.9.0
[INFO] [stderr]    Compiling regex-syntax v0.5.6
[INFO] [stderr]    Compiling aho-corasick v0.6.10
[INFO] [stderr]     Checking unicode-normalization v0.1.13
[INFO] [stderr]     Checking fern v0.6.0
[INFO] [stderr]    Compiling jobserver v0.1.21
[INFO] [stderr]     Checking regex v1.3.9
[INFO] [stderr]    Compiling cc v1.0.59
[INFO] [stderr]    Compiling quote v1.0.7
[INFO] [stderr]     Checking idna v0.2.0
[INFO] [stderr]    Compiling libz-sys v1.1.0
[INFO] [stderr]    Compiling openssl-sys v0.9.58
[INFO] [stderr]    Compiling libssh2-sys v0.2.19
[INFO] [stderr]    Compiling libgit2-sys v0.12.12+1.0.1
[INFO] [stderr]     Checking url v2.1.1
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the beta release channel
[INFO] [stdout]    --> /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/regex-0.2.11/src/lib.rs:522:34
[INFO] [stdout]     |
[INFO] [stdout] 522 | #![cfg_attr(feature = "pattern", feature(pattern))]
[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 `regex`.
[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] [stderr] error: build failed
[INFO] running `Command { std: "docker" "inspect" "c4ec7db85acb32212e88638e67dd01f6ec2aec4c5d84fcdf03db4e4f591ddcbd", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "c4ec7db85acb32212e88638e67dd01f6ec2aec4c5d84fcdf03db4e4f591ddcbd", kill_on_drop: false }`
[INFO] [stdout] c4ec7db85acb32212e88638e67dd01f6ec2aec4c5d84fcdf03db4e4f591ddcbd
