[INFO] cloning repository https://github.com/yaahc/exploparse
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/yaahc/exploparse" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fyaahc%2Fexploparse", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fyaahc%2Fexploparse'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] f52a46bf85ca043836e319ed3edc83e420c42c9d
[INFO] testing yaahc/exploparse against 1.45.2 for beta-1.46-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fyaahc%2Fexploparse" "/workspace/builds/worker-8/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-8/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/yaahc/exploparse on toolchain 1.45.2
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.45.2" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/yaahc/exploparse
[INFO] finished tweaking git repo https://github.com/yaahc/exploparse
[INFO] tweaked toml for git repo https://github.com/yaahc/exploparse written to /workspace/builds/worker-8/source/Cargo.toml
[INFO] crate git repo https://github.com/yaahc/exploparse already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.45.2" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/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" "MAP_USER_ID=0" "-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" "--network" "none" "rustops/crates-build-env@sha256:a636fd89d022f18117e1dc8fb37a0a009933cdbbe082814857f0e2024962d47c" "/opt/rustwide/cargo-home/bin/cargo" "+1.45.2" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 75efec67591f7313e5c0f923340de4cb1de0b80a54b57cc22519289f3c145a69
[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" "75efec67591f7313e5c0f923340de4cb1de0b80a54b57cc22519289f3c145a69", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "75efec67591f7313e5c0f923340de4cb1de0b80a54b57cc22519289f3c145a69", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "75efec67591f7313e5c0f923340de4cb1de0b80a54b57cc22519289f3c145a69", kill_on_drop: false }`
[INFO] [stdout] 75efec67591f7313e5c0f923340de4cb1de0b80a54b57cc22519289f3c145a69
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/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" "MAP_USER_ID=0" "-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" "--network" "none" "rustops/crates-build-env@sha256:a636fd89d022f18117e1dc8fb37a0a009933cdbbe082814857f0e2024962d47c" "/opt/rustwide/cargo-home/bin/cargo" "+1.45.2" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 530f559c846c11c46c590233a6a419576bdfea0928e7d28747e21344243e516a
[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" "530f559c846c11c46c590233a6a419576bdfea0928e7d28747e21344243e516a", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.9
[INFO] [stderr]    Compiling unicode-xid v0.2.0
[INFO] [stderr]    Compiling syn v1.0.16
[INFO] [stderr]    Compiling lazy_static v1.4.0
[INFO] [stderr]    Compiling byteorder v1.3.4
[INFO] [stderr]    Compiling libc v0.2.67
[INFO] [stderr]    Compiling cfg-if v0.1.10
[INFO] [stderr]    Compiling memchr v2.3.3
[INFO] [stderr]    Compiling autocfg v1.0.0
[INFO] [stderr]    Compiling serde v1.0.104
[INFO] [stderr]    Compiling log v0.4.8
[INFO] [stderr]    Compiling ryu v1.0.2
[INFO] [stderr]    Compiling regex-syntax v0.6.17
[INFO] [stderr]    Compiling smallvec v1.2.0
[INFO] [stderr]    Compiling utf8-ranges v1.0.4
[INFO] [stderr]    Compiling semver-parser v0.7.0
[INFO] [stderr]    Compiling cc v1.0.50
[INFO] [stderr]    Compiling itoa v0.4.5
[INFO] [stderr]    Compiling stable_deref_trait v1.1.1
[INFO] [stderr]    Compiling fallible-iterator v0.2.0
[INFO] [stderr]    Compiling arrayvec v0.5.1
[INFO] [stderr]    Compiling arrayvec v0.4.12
[INFO] [stderr]    Compiling plain v0.2.3
[INFO] [stderr]    Compiling lazycell v1.2.1
[INFO] [stderr]    Compiling version_check v0.9.1
[INFO] [stderr]    Compiling nodrop v0.1.14
[INFO] [stderr]    Compiling static_assertions v0.3.4
[INFO] [stderr]    Compiling eyre v0.3.5
[INFO] [stderr]    Compiling ansi_term v0.11.0
[INFO] [stderr]    Compiling rustc-demangle v0.1.16
[INFO] [stderr]    Compiling matches v0.1.8
[INFO] [stderr]    Compiling termcolor v1.1.0
[INFO] [stderr]    Compiling indenter v0.1.3
[INFO] [stderr]    Compiling tracing-core v0.1.10
[INFO] [stderr]    Compiling thread_local v1.0.1
[INFO] [stderr]    Compiling sharded-slab v0.0.8
[INFO] [stderr]    Compiling semver v0.9.0
[INFO] [stderr]    Compiling num-traits v0.2.11
[INFO] [stderr]    Compiling num-integer v0.1.42
[INFO] [stderr]    Compiling aho-corasick v0.7.10
[INFO] [stderr]    Compiling csv-core v0.1.10
[INFO] [stderr]    Compiling nom v5.1.1
[INFO] [stderr]    Compiling rustc_version v0.2.3
[INFO] [stderr]    Compiling tracing-log v0.1.1
[INFO] [stderr]    Compiling gimli v0.20.0
[INFO] [stderr]    Compiling quote v1.0.3
[INFO] [stderr]    Compiling lexical-core v0.6.2
[INFO] [stderr]    Compiling time v0.1.42
[INFO] [stderr]    Compiling memmap v0.7.0
[INFO] [stderr]    Compiling findshlibs v0.5.0
[INFO] [stderr]    Compiling atty v0.2.14
[INFO] [stderr]    Compiling backtrace-sys v0.1.34
[INFO] [stderr]    Compiling chrono v0.4.11
[INFO] [stderr]    Compiling regex-automata v0.1.8
[INFO] [stderr]    Compiling regex v1.3.5
[INFO] [stderr]    Compiling matchers v0.0.1
[INFO] [stderr]    Compiling addr2line v0.11.0
[INFO] [stderr]    Compiling serde_derive v1.0.104
[INFO] [stderr]    Compiling scroll_derive v0.10.1
[INFO] [stderr]    Compiling tracing-attributes v0.1.7
[INFO] [stderr]    Compiling spandoc v0.1.2
[INFO] [stderr]    Compiling scroll v0.10.1
[INFO] [stderr]    Compiling goblin v0.2.1
[INFO] [stderr]    Compiling tracing v0.1.13
[INFO] [stderr]    Compiling backtrace v0.3.45
[INFO] [stderr]    Compiling color-backtrace v0.3.0
[INFO] [stderr]    Compiling tracing-serde v0.1.1
[INFO] [stderr]    Compiling serde_json v1.0.48
[INFO] [stderr]    Compiling bstr v0.2.11
[INFO] [stderr]    Compiling csv v1.1.3
[INFO] [stderr]    Compiling tracing-subscriber v0.2.2
[INFO] [stderr]    Compiling tracing-error v0.1.2
[INFO] [stderr]    Compiling exploparse v0.1.0 (/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(backtrace, error_iter)]
[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 `exploparse`.
[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" "530f559c846c11c46c590233a6a419576bdfea0928e7d28747e21344243e516a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "530f559c846c11c46c590233a6a419576bdfea0928e7d28747e21344243e516a", kill_on_drop: false }`
[INFO] [stdout] 530f559c846c11c46c590233a6a419576bdfea0928e7d28747e21344243e516a