[INFO] fetching crate unix-signal 0.1.4...
[INFO] testing unix-signal-0.1.4 against try#722e1797249a965b6335aebd65d777f917e498f1 for pr-91031
[INFO] extracting crate unix-signal 0.1.4 into /workspace/builds/worker-86/source
[INFO] validating manifest of crates.io crate unix-signal 0.1.4 on toolchain 722e1797249a965b6335aebd65d777f917e498f1
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+722e1797249a965b6335aebd65d777f917e498f1" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate unix-signal 0.1.4
[INFO] finished tweaking crates.io crate unix-signal 0.1.4
[INFO] tweaked toml for crates.io crate unix-signal 0.1.4 written to /workspace/builds/worker-86/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+722e1797249a965b6335aebd65d777f917e498f1" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+722e1797249a965b6335aebd65d777f917e498f1" "fetch" "--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-86/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-86/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" "ghcr.io/rust-lang/crates-build-env/linux@sha256:5736fa189c1c60b01babf4b8b698fe57b6ecc41933a7ff2e0b8d7a221459412b" "/opt/rustwide/cargo-home/bin/cargo" "+722e1797249a965b6335aebd65d777f917e498f1" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 6f401c962a8302105e4d962de353c47f838967da7d62100019272c10af9f776b
[INFO] running `Command { std: "docker" "start" "-a" "6f401c962a8302105e4d962de353c47f838967da7d62100019272c10af9f776b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "6f401c962a8302105e4d962de353c47f838967da7d62100019272c10af9f776b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "6f401c962a8302105e4d962de353c47f838967da7d62100019272c10af9f776b", kill_on_drop: false }`
[INFO] [stdout] 6f401c962a8302105e4d962de353c47f838967da7d62100019272c10af9f776b
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-86/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-86/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" "ghcr.io/rust-lang/crates-build-env/linux@sha256:5736fa189c1c60b01babf4b8b698fe57b6ecc41933a7ff2e0b8d7a221459412b" "/opt/rustwide/cargo-home/bin/cargo" "+722e1797249a965b6335aebd65d777f917e498f1" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 7916f9e26a9041ec389d5bcf2688989a321863c72e863d1fde6bb1de767d9d33
[INFO] running `Command { std: "docker" "start" "-a" "7916f9e26a9041ec389d5bcf2688989a321863c72e863d1fde6bb1de767d9d33", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]    Compiling autocfg v0.1.7
[INFO] [stderr]    Compiling rand_core v0.4.2
[INFO] [stderr]    Compiling ptr v0.2.3
[INFO] [stderr]    Compiling hash-table v0.2.5
[INFO] [stderr]    Compiling siphasher v0.2.3
[INFO] [stderr]    Compiling containers v0.9.13
[INFO] [stderr]    Compiling i-o v0.4.7
[INFO] [stderr]    Compiling idem v0.4.0
[INFO] [stderr]    Compiling rel v0.2.0
[INFO] [stderr]    Compiling abort v0.1.3
[INFO] [stderr]    Compiling heap v0.1.0
[INFO] [stderr]    Compiling libc-interface v0.1.2
[INFO] [stderr]    Compiling system-call v0.1.3
[INFO] [stderr]    Compiling flags v0.1.5
[INFO] [stderr]    Compiling null-terminated v0.3.15
[INFO] [stderr]    Compiling unix v0.6.12
[INFO] [stderr]    Compiling idem v0.1.1
[INFO] [stderr]    Compiling rand_core v0.3.1
[INFO] [stderr]    Compiling rand_jitter v0.1.4
[INFO] [stdout] error[E0658]: dereferencing raw mutable pointers in constant functions is unstable
[INFO] [stdout]    --> /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/null-terminated-0.3.15/src/lib.rs:336:72
[INFO] [stdout]     |
[INFO] [stdout] 336 |     pub const unsafe fn new_unchecked(p: *const u8) -> &'static Self { &*(p as *mut Self) }
[INFO] [stdout]     |                                                                        ^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: see issue #57349 <https://github.com/rust-lang/rust/issues/57349> for more information
[INFO] [stdout]     = help: add `#![feature(const_mut_refs)]` to the crate attributes to enable
[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: could not compile `null-terminated` due to 2 previous errors
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stderr] error: build failed
[INFO] running `Command { std: "docker" "inspect" "7916f9e26a9041ec389d5bcf2688989a321863c72e863d1fde6bb1de767d9d33", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "7916f9e26a9041ec389d5bcf2688989a321863c72e863d1fde6bb1de767d9d33", kill_on_drop: false }`
[INFO] [stdout] 7916f9e26a9041ec389d5bcf2688989a321863c72e863d1fde6bb1de767d9d33