[INFO] fetching crate backtrace 0.3.54...
[INFO] checking backtrace-0.3.54 against beta for pr-78714
[INFO] extracting crate backtrace 0.3.54 into /workspace/builds/worker-2/source
[INFO] validating manifest of crates.io crate backtrace 0.3.54 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 backtrace 0.3.54
[INFO] removed 0 missing examples
[INFO] removed 1 missing tests
[INFO] finished tweaking crates.io crate backtrace 0.3.54
[INFO] tweaked toml for crates.io crate backtrace 0.3.54 written to /workspace/builds/worker-2/source/Cargo.toml
[INFO] crate crates.io crate backtrace 0.3.54 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] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded cpp_demangle v0.3.1
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/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] e68e71beaa6eddc1d27cceda8486ea6180d5afea9abc695ebe07a7056e0fda4e
[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" "e68e71beaa6eddc1d27cceda8486ea6180d5afea9abc695ebe07a7056e0fda4e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "e68e71beaa6eddc1d27cceda8486ea6180d5afea9abc695ebe07a7056e0fda4e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "e68e71beaa6eddc1d27cceda8486ea6180d5afea9abc695ebe07a7056e0fda4e", kill_on_drop: false }`
[INFO] [stdout] e68e71beaa6eddc1d27cceda8486ea6180d5afea9abc695ebe07a7056e0fda4e
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/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] c110696c8e63dd45f14f56c1593a7eb41a07b2584c7236510e89a50f2f14dfb4
[INFO] running `Command { std: "docker" "start" "-a" "c110696c8e63dd45f14f56c1593a7eb41a07b2584c7236510e89a50f2f14dfb4", kill_on_drop: false }`
[INFO] [stderr]    Compiling autocfg v1.0.1
[INFO] [stderr]     Checking cfg-if v1.0.0
[INFO] [stderr]     Checking gimli v0.23.0
[INFO] [stderr]     Checking adler v0.2.3
[INFO] [stderr]     Checking rustc-demangle v0.1.18
[INFO] [stderr]     Checking object v0.22.0
[INFO] [stderr]     Checking libloading v0.6.5
[INFO] [stderr]    Compiling miniz_oxide v0.4.3
[INFO] [stderr]     Checking addr2line v0.14.0
[INFO] [stderr]     Checking backtrace v0.3.54 (/opt/rustwide/workdir)
[INFO] [stdout] warning: hidden lifetime parameters in types are deprecated
[INFO] [stdout]    --> src/symbolize/gimli/elf.rs:164:68
[INFO] [stdout]     |
[INFO] [stdout] 164 |     pub(super) fn search_object_map(&self, _addr: u64) -> Option<(&Context, u64)> {
[INFO] [stdout]     |                                                                    ^^^^^^^- help: indicate the anonymous lifetime: `<'_>`
[INFO] [stdout]     |
[INFO] [stdout] note: the lint level is defined here
[INFO] [stdout]    --> src/lib.rs:51:9
[INFO] [stdout]     |
[INFO] [stdout] 51  | #![warn(rust_2018_idioms)]
[INFO] [stdout]     |         ^^^^^^^^^^^^^^^^
[INFO] [stdout]     = note: `#[warn(elided_lifetimes_in_paths)]` implied by `#[warn(rust_2018_idioms)]`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: hidden lifetime parameters in types are deprecated
[INFO] [stdout]    --> src/symbolize/gimli/elf.rs:164:68
[INFO] [stdout]     |
[INFO] [stdout] 164 |     pub(super) fn search_object_map(&self, _addr: u64) -> Option<(&Context, u64)> {
[INFO] [stdout]     |                                                                    ^^^^^^^- help: indicate the anonymous lifetime: `<'_>`
[INFO] [stdout]     |
[INFO] [stdout] note: the lint level is defined here
[INFO] [stdout]    --> src/lib.rs:51:9
[INFO] [stdout]     |
[INFO] [stdout] 51  | #![warn(rust_2018_idioms)]
[INFO] [stdout]     |         ^^^^^^^^^^^^^^^^
[INFO] [stdout]     = note: `#[warn(elided_lifetimes_in_paths)]` implied by `#[warn(rust_2018_idioms)]`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the beta release channel
[INFO] [stdout]  --> benches/benchmarks.rs:1:1
[INFO] [stdout]   |
[INFO] [stdout] 1 | #![feature(test)]
[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 `backtrace`
[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" "c110696c8e63dd45f14f56c1593a7eb41a07b2584c7236510e89a50f2f14dfb4", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "c110696c8e63dd45f14f56c1593a7eb41a07b2584c7236510e89a50f2f14dfb4", kill_on_drop: false }`
[INFO] [stdout] c110696c8e63dd45f14f56c1593a7eb41a07b2584c7236510e89a50f2f14dfb4