[INFO] fetching crate one2html 1.0.0...
[INFO] checking one2html-1.0.0 against beta for pr-78714
[INFO] extracting crate one2html 1.0.0 into /workspace/builds/worker-1/source
[INFO] validating manifest of crates.io crate one2html 1.0.0 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 crates.io crate one2html 1.0.0
[INFO] finished tweaking crates.io crate one2html 1.0.0
[INFO] tweaked toml for crates.io crate one2html 1.0.0 written to /workspace/builds/worker-1/source/Cargo.toml
[INFO] crate crates.io crate one2html 1.0.0 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-1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/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] [stdout] 52bdda208cc185e36b74a812a67b2c6b21fe8c455b8f195e498e31e6e407ab3c
[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" "52bdda208cc185e36b74a812a67b2c6b21fe8c455b8f195e498e31e6e407ab3c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "52bdda208cc185e36b74a812a67b2c6b21fe8c455b8f195e498e31e6e407ab3c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "52bdda208cc185e36b74a812a67b2c6b21fe8c455b8f195e498e31e6e407ab3c", kill_on_drop: false }`
[INFO] [stdout] 52bdda208cc185e36b74a812a67b2c6b21fe8c455b8f195e498e31e6e407ab3c
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/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] bf02e9a224e38bd36a72041cbfee65ca5939b1452f1bcc291303fe02fb9f2692
[INFO] running `Command { std: "docker" "start" "-a" "bf02e9a224e38bd36a72041cbfee65ca5939b1452f1bcc291303fe02fb9f2692", kill_on_drop: false }`
[INFO] [stderr]    Compiling ppv-lite86 v0.2.10
[INFO] [stderr]    Compiling siphasher v0.3.3
[INFO] [stderr]    Compiling eyre v0.6.2
[INFO] [stderr]    Compiling askama_escape v0.10.1
[INFO] [stderr]    Compiling percent-encoding v2.1.0
[INFO] [stderr]    Compiling humansize v1.1.0
[INFO] [stderr]     Checking indenter v0.3.0
[INFO] [stderr]     Checking number_prefix v0.3.0
[INFO] [stderr]     Checking uuid v0.8.1
[INFO] [stderr]    Compiling paste v1.0.2
[INFO] [stderr]     Checking owo-colors v1.1.3
[INFO] [stderr]     Checking widestring v0.4.3
[INFO] [stderr]     Checking tracing-subscriber v0.2.15
[INFO] [stderr]    Compiling getrandom v0.1.15
[INFO] [stderr]     Checking terminal_size v0.1.13
[INFO] [stderr]    Compiling num-traits v0.2.14
[INFO] [stderr]     Checking nom v5.1.2
[INFO] [stderr]     Checking syn v1.0.48
[INFO] [stderr]     Checking approx v0.3.2
[INFO] [stderr]    Compiling phf_shared v0.8.0
[INFO] [stderr]     Checking backtrace v0.3.54
[INFO] [stderr]    Compiling palette_derive v0.5.0
[INFO] [stderr]    Compiling proc-macro-error v1.0.4
[INFO] [stderr]    Compiling rand_core v0.5.1
[INFO] [stderr]     Checking console v0.13.0
[INFO] [stderr]     Checking sanitize-filename v0.3.0
[INFO] [stderr]     Checking tracing v0.1.21
[INFO] [stderr]     Checking phf v0.8.0
[INFO] [stderr]    Compiling toml v0.5.7
[INFO] [stderr]    Compiling rand_chacha v0.2.2
[INFO] [stderr]    Compiling rand_pcg v0.2.1
[INFO] [stderr]    Compiling structopt-derive v0.4.13
[INFO] [stderr]     Checking indicatif v0.15.0
[INFO] [stderr]    Compiling rand v0.7.3
[INFO] [stderr]     Checking tracing-error v0.1.2
[INFO] [stderr]     Checking color-spantrace v0.1.4
[INFO] [stderr]     Checking color-eyre v0.5.7
[INFO] [stderr]    Compiling enum-primitive-derive v0.2.1
[INFO] [stderr]    Compiling phf_generator v0.8.0
[INFO] [stderr]    Compiling phf_codegen v0.8.0
[INFO] [stderr]    Compiling palette v0.5.0
[INFO] [stderr]    Compiling askama_shared v0.10.4
[INFO] [stderr]     Checking onenote_parser v0.2.1
[INFO] [stderr]     Checking structopt v0.3.20
[INFO] [stderr]     Checking happylog v0.1.0
[INFO] [stderr]    Compiling askama_derive v0.10.3
[INFO] [stderr]     Checking askama v0.10.3
[INFO] [stderr]     Checking one2html v1.0.0 (/opt/rustwide/workdir)
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the beta release channel
[INFO] [stdout]  --> src/main.rs:1:36
[INFO] [stdout]   |
[INFO] [stdout] 1 | #![cfg_attr(feature = "backtrace", 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:1:36
[INFO] [stdout]   |
[INFO] [stdout] 1 | #![cfg_attr(feature = "backtrace", 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] [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 `one2html`
[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" "bf02e9a224e38bd36a72041cbfee65ca5939b1452f1bcc291303fe02fb9f2692", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "bf02e9a224e38bd36a72041cbfee65ca5939b1452f1bcc291303fe02fb9f2692", kill_on_drop: false }`
[INFO] [stdout] bf02e9a224e38bd36a72041cbfee65ca5939b1452f1bcc291303fe02fb9f2692