[INFO] cloning repository https://github.com/rdelfin/rust-bcc-tools
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/rdelfin/rust-bcc-tools" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Frdelfin%2Frust-bcc-tools", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Frdelfin%2Frust-bcc-tools'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 518fc204883e4717dbedf145ddd42770053fa1f7
[INFO] checking rdelfin/rust-bcc-tools against beta for pr-78714
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Frdelfin%2Frust-bcc-tools" "/workspace/builds/worker-0/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-0/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/rdelfin/rust-bcc-tools on toolchain beta
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/rdelfin/rust-bcc-tools
[INFO] finished tweaking git repo https://github.com/rdelfin/rust-bcc-tools
[INFO] tweaked toml for git repo https://github.com/rdelfin/rust-bcc-tools written to /workspace/builds/worker-0/source/Cargo.toml
[INFO] crate git repo https://github.com/rdelfin/rust-bcc-tools already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/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@sha256:6eabd152ff4036248d66efda456a36cb33d24b7291b33f25f75140726c88da35" "/opt/rustwide/cargo-home/bin/cargo" "+beta" "metadata" "--no-deps" "--format-version=1", 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] 9c8f0110364f8dbd6d35edf36406be220fc85bbc5c94c9e5ce9f35518d5cf70a
[INFO] running `Command { std: "docker" "start" "-a" "9c8f0110364f8dbd6d35edf36406be220fc85bbc5c94c9e5ce9f35518d5cf70a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "9c8f0110364f8dbd6d35edf36406be220fc85bbc5c94c9e5ce9f35518d5cf70a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "9c8f0110364f8dbd6d35edf36406be220fc85bbc5c94c9e5ce9f35518d5cf70a", kill_on_drop: false }`
[INFO] [stdout] 9c8f0110364f8dbd6d35edf36406be220fc85bbc5c94c9e5ce9f35518d5cf70a
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/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@sha256:6eabd152ff4036248d66efda456a36cb33d24b7291b33f25f75140726c88da35" "/opt/rustwide/cargo-home/bin/cargo" "+beta" "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] a7d89adf83e3296ea031a8e065d91bc2f3e424525c6736d43684487febdcd0d0
[INFO] running `Command { std: "docker" "start" "-a" "a7d89adf83e3296ea031a8e065d91bc2f3e424525c6736d43684487febdcd0d0", kill_on_drop: false }`
[INFO] [stderr]    Compiling bcc-sys v0.16.1
[INFO] [stderr]     Checking aho-corasick v0.7.8
[INFO] [stderr]     Checking ctrlc v3.1.3
[INFO] [stderr]    Compiling proc-macro-error-attr v1.0.4
[INFO] [stderr]    Compiling thiserror-impl v1.0.21
[INFO] [stderr]    Compiling proc-macro-error v1.0.4
[INFO] [stderr]     Checking regex v1.4.1
[INFO] [stderr]    Compiling structopt-derive v0.4.13
[INFO] [stderr]     Checking thiserror v1.0.21
[INFO] [stderr]     Checking bcc v0.0.29
[INFO] [stderr]     Checking structopt v0.3.20
[INFO] [stderr]     Checking rust-bcc-tools v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] error[E0658]: use of unstable library feature 'backtrace'
[INFO] [stdout]    --> src/bin/execsnoop.rs:119:33
[INFO] [stdout]     |
[INFO] [stdout] 119 |             eprintln!("{:?}", x.backtrace());
[INFO] [stdout]     |                                 ^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: see issue #53487 <https://github.com/rust-lang/rust/issues/53487> for more information
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0658]: use of unstable library feature 'backtrace'
[INFO] [stdout]    --> src/bin/execsnoop.rs:119:33
[INFO] [stdout]     |
[INFO] [stdout] 119 |             eprintln!("{:?}", x.backtrace());
[INFO] [stdout]     |                                 ^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: see issue #53487 <https://github.com/rust-lang/rust/issues/53487> for more information
[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 E0658`.
[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 E0658`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `rust-bcc-tools`
[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[E0658]: use of unstable library feature 'backtrace'
[INFO] [stdout]    --> src/bin/opensnoop.rs:111:33
[INFO] [stdout]     |
[INFO] [stdout] 111 |             eprintln!("{:?}", x.backtrace());
[INFO] [stdout]     |                                 ^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: see issue #53487 <https://github.com/rust-lang/rust/issues/53487> for more information
[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 E0658`.
[INFO] [stdout] 
[INFO] [stdout] error[E0658]: use of unstable library feature 'backtrace'
[INFO] [stdout]    --> src/bin/opensnoop.rs:111:33
[INFO] [stdout]     |
[INFO] [stdout] 111 |             eprintln!("{:?}", x.backtrace());
[INFO] [stdout]     |                                 ^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: see issue #53487 <https://github.com/rust-lang/rust/issues/53487> for more information
[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 E0658`.
[INFO] [stdout] 
[INFO] [stderr] error: build failed
[INFO] running `Command { std: "docker" "inspect" "a7d89adf83e3296ea031a8e065d91bc2f3e424525c6736d43684487febdcd0d0", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "a7d89adf83e3296ea031a8e065d91bc2f3e424525c6736d43684487febdcd0d0", kill_on_drop: false }`
[INFO] [stdout] a7d89adf83e3296ea031a8e065d91bc2f3e424525c6736d43684487febdcd0d0