[INFO] fetching crate rand-facade 0.2.0...
[INFO] checking rand-facade-0.2.0 against master#0a8629bff642c3c3b84bb644c0099194f063b627 for pr-86231
[INFO] extracting crate rand-facade 0.2.0 into /workspace/builds/worker-8/source
[INFO] validating manifest of crates.io crate rand-facade 0.2.0 on toolchain 0a8629bff642c3c3b84bb644c0099194f063b627
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+0a8629bff642c3c3b84bb644c0099194f063b627" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate rand-facade 0.2.0
[INFO] finished tweaking crates.io crate rand-facade 0.2.0
[INFO] tweaked toml for crates.io crate rand-facade 0.2.0 written to /workspace/builds/worker-8/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+0a8629bff642c3c3b84bb644c0099194f063b627" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+0a8629bff642c3c3b84bb644c0099194f063b627" "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-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" "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@sha256:20528e8c29e4536546f0102ce88568b16ea7538393a33fcca951030f7af10457" "/opt/rustwide/cargo-home/bin/cargo" "+0a8629bff642c3c3b84bb644c0099194f063b627" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 7e3be3b22d4a823565e857553c12d67372511bdfbd1175e53b61e5772f723e23
[INFO] running `Command { std: "docker" "start" "-a" "7e3be3b22d4a823565e857553c12d67372511bdfbd1175e53b61e5772f723e23", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "7e3be3b22d4a823565e857553c12d67372511bdfbd1175e53b61e5772f723e23", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "7e3be3b22d4a823565e857553c12d67372511bdfbd1175e53b61e5772f723e23", kill_on_drop: false }`
[INFO] [stdout] 7e3be3b22d4a823565e857553c12d67372511bdfbd1175e53b61e5772f723e23
[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" "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@sha256:20528e8c29e4536546f0102ce88568b16ea7538393a33fcca951030f7af10457" "/opt/rustwide/cargo-home/bin/cargo" "+0a8629bff642c3c3b84bb644c0099194f063b627" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 1c4e3bbcbc989cf1b51de9d43cf118cccf573b2515068151a00133dbc200de5e
[INFO] running `Command { std: "docker" "start" "-a" "1c4e3bbcbc989cf1b51de9d43cf118cccf573b2515068151a00133dbc200de5e", kill_on_drop: false }`
[INFO] [stderr]     Checking rand_core v0.5.1
[INFO] [stderr]     Checking ppv-lite86 v0.2.10
[INFO] [stderr]     Checking rand-facade v0.2.0 (/opt/rustwide/workdir)
[INFO] [stdout] error: One of 'os_rng', 'std', 'cortex_m' features must be enabled
[INFO] [stdout]   --> src/lib.rs:51:1
[INFO] [stdout]    |
[INFO] [stdout] 51 | compile_error!("One of 'os_rng', 'std', 'cortex_m' features must be enabled");
[INFO] [stdout]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0433]: failed to resolve: use of undeclared type `Mutex`
[INFO] [stdout]   --> src/lib.rs:56:91
[INFO] [stdout]    |
[INFO] [stdout] 56 |     static ref GLOBAL_RNG: Mutex<RefCell<Option<&'static mut (dyn Rng + Sync + Send)>>> = Mutex::new(RefCell::new(None));
[INFO] [stdout]    |                                                                                           ^^^^^ use of undeclared type `Mutex`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0412]: cannot find type `Mutex` in this scope
[INFO] [stdout]   --> src/lib.rs:56:28
[INFO] [stdout]    |
[INFO] [stdout] 56 |     static ref GLOBAL_RNG: Mutex<RefCell<Option<&'static mut (dyn Rng + Sync + Send)>>> = Mutex::new(RefCell::new(None));
[INFO] [stdout]    |                            ^^^^^ not found in this scope
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `Error`
[INFO] [stdout]   --> src/lib.rs:27:37
[INFO] [stdout]    |
[INFO] [stdout] 27 | use rand_core::{RngCore, CryptoRng, Error};
[INFO] [stdout]    |                                     ^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 3 previous errors; 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] Some errors have detailed explanations: E0412, E0433.
[INFO] [stdout] 
[INFO] [stdout] For more information about an error, try `rustc --explain E0412`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `rand-facade`
[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" "1c4e3bbcbc989cf1b51de9d43cf118cccf573b2515068151a00133dbc200de5e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "1c4e3bbcbc989cf1b51de9d43cf118cccf573b2515068151a00133dbc200de5e", kill_on_drop: false }`
[INFO] [stdout] 1c4e3bbcbc989cf1b51de9d43cf118cccf573b2515068151a00133dbc200de5e