[INFO] fetching crate ocron 0.2.0...
[INFO] building ocron-0.2.0 against master#881c1ac408d93bb7adaa3a51dabab9266e82eee8 for issue-85264
[INFO] extracting crate ocron 0.2.0 into /workspace/builds/worker-2/source
[INFO] validating manifest of crates.io crate ocron 0.2.0 on toolchain 881c1ac408d93bb7adaa3a51dabab9266e82eee8
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+881c1ac408d93bb7adaa3a51dabab9266e82eee8" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate ocron 0.2.0
[INFO] finished tweaking crates.io crate ocron 0.2.0
[INFO] tweaked toml for crates.io crate ocron 0.2.0 written to /workspace/builds/worker-2/source/Cargo.toml
[INFO] crate crates.io crate ocron 0.2.0 already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+881c1ac408d93bb7adaa3a51dabab9266e82eee8" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[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" "ghcr.io/rust-lang/crates-build-env/linux@sha256:20528e8c29e4536546f0102ce88568b16ea7538393a33fcca951030f7af10457" "/opt/rustwide/cargo-home/bin/cargo" "+881c1ac408d93bb7adaa3a51dabab9266e82eee8" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 5519dc22f08dce96d3f976f9912ef5e1e6fb3674e42b5fb63fdae90391c664ca
[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" "5519dc22f08dce96d3f976f9912ef5e1e6fb3674e42b5fb63fdae90391c664ca", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "5519dc22f08dce96d3f976f9912ef5e1e6fb3674e42b5fb63fdae90391c664ca", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "5519dc22f08dce96d3f976f9912ef5e1e6fb3674e42b5fb63fdae90391c664ca", kill_on_drop: false }`
[INFO] [stdout] 5519dc22f08dce96d3f976f9912ef5e1e6fb3674e42b5fb63fdae90391c664ca
[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" "ghcr.io/rust-lang/crates-build-env/linux@sha256:20528e8c29e4536546f0102ce88568b16ea7538393a33fcca951030f7af10457" "/opt/rustwide/cargo-home/bin/cargo" "+881c1ac408d93bb7adaa3a51dabab9266e82eee8" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 6ba67b96290907852d98174a2a0f4a97f238917535dbdf92bacb137459b4e4b4
[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" "6ba67b96290907852d98174a2a0f4a97f238917535dbdf92bacb137459b4e4b4", kill_on_drop: false }`
[INFO] [stderr]    Compiling autocfg v1.0.1
[INFO] [stderr]    Compiling serde v1.0.117
[INFO] [stderr]    Compiling anyhow v1.0.34
[INFO] [stderr]    Compiling time v0.1.44
[INFO] [stderr]    Compiling num-traits v0.2.14
[INFO] [stderr]    Compiling num-integer v0.1.44
[INFO] [stderr]    Compiling chrono v0.4.19
[INFO] [stderr]    Compiling toml v0.5.8
[INFO] [stderr]    Compiling ocron v0.2.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 11.17s
[INFO] running `Command { std: "docker" "inspect" "6ba67b96290907852d98174a2a0f4a97f238917535dbdf92bacb137459b4e4b4", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "6ba67b96290907852d98174a2a0f4a97f238917535dbdf92bacb137459b4e4b4", kill_on_drop: false }`
[INFO] [stdout] 6ba67b96290907852d98174a2a0f4a97f238917535dbdf92bacb137459b4e4b4
[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" "ghcr.io/rust-lang/crates-build-env/linux@sha256:20528e8c29e4536546f0102ce88568b16ea7538393a33fcca951030f7af10457" "/opt/rustwide/cargo-home/bin/cargo" "+881c1ac408d93bb7adaa3a51dabab9266e82eee8" "test" "--frozen" "--no-run" "--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] fec8f59b3379ce5953c73c33f7b51bd9fc3fcf59f014bb78593b46a5356fafb1
[INFO] running `Command { std: "docker" "start" "-a" "fec8f59b3379ce5953c73c33f7b51bd9fc3fcf59f014bb78593b46a5356fafb1", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]    Compiling ocron v0.2.0 (/opt/rustwide/workdir)
[INFO] [stdout] error[E0658]: use of unstable library feature 'bench_black_box'
[INFO] [stdout]    --> src/task.rs:156:13
[INFO] [stdout]     |
[INFO] [stdout] 156 |             black_box(now),
[INFO] [stdout]     |             ^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: see issue #64102 <https://github.com/rust-lang/rust/issues/64102> for more information
[INFO] [stdout]     = help: add `#![feature(bench_black_box)]` to the crate attributes to enable
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0658]: use of unstable library feature 'bench_black_box'
[INFO] [stdout]    --> src/task.rs:157:13
[INFO] [stdout]     |
[INFO] [stdout] 157 |             black_box(&(0..60).collect::<Vec<u32>>()),
[INFO] [stdout]     |             ^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: see issue #64102 <https://github.com/rust-lang/rust/issues/64102> for more information
[INFO] [stdout]     = help: add `#![feature(bench_black_box)]` to the crate attributes to enable
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0658]: use of unstable library feature 'bench_black_box'
[INFO] [stdout]    --> src/task.rs:158:13
[INFO] [stdout]     |
[INFO] [stdout] 158 |             black_box(&(0..60).collect::<Vec<u32>>()),
[INFO] [stdout]     |             ^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: see issue #64102 <https://github.com/rust-lang/rust/issues/64102> for more information
[INFO] [stdout]     = help: add `#![feature(bench_black_box)]` to the crate attributes to enable
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0658]: use of unstable library feature 'bench_black_box'
[INFO] [stdout]    --> src/task.rs:159:13
[INFO] [stdout]     |
[INFO] [stdout] 159 |             black_box(&(0..24).collect::<Vec<u32>>()),
[INFO] [stdout]     |             ^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: see issue #64102 <https://github.com/rust-lang/rust/issues/64102> for more information
[INFO] [stdout]     = help: add `#![feature(bench_black_box)]` to the crate attributes to enable
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0658]: use of unstable library feature 'bench_black_box'
[INFO] [stdout]    --> src/task.rs:160:13
[INFO] [stdout]     |
[INFO] [stdout] 160 |             black_box(&[Weekday::Mon, Weekday::Tue, Weekday::Wed, Weekday::Thu, Weekday::Fri, Weekday::Sat, Weekday::Sun]),
[INFO] [stdout]     |             ^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: see issue #64102 <https://github.com/rust-lang/rust/issues/64102> for more information
[INFO] [stdout]     = help: add `#![feature(bench_black_box)]` to the crate attributes to enable
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0658]: use of unstable library feature 'bench_black_box'
[INFO] [stdout]    --> src/task.rs:161:13
[INFO] [stdout]     |
[INFO] [stdout] 161 |             black_box(&(0..50).collect::<Vec<u32>>()),
[INFO] [stdout]     |             ^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: see issue #64102 <https://github.com/rust-lang/rust/issues/64102> for more information
[INFO] [stdout]     = help: add `#![feature(bench_black_box)]` to the crate attributes to enable
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0658]: use of unstable library feature 'bench_black_box'
[INFO] [stdout]    --> src/task.rs:162:13
[INFO] [stdout]     |
[INFO] [stdout] 162 |             black_box(&(13..30).collect::<Vec<u32>>()),
[INFO] [stdout]     |             ^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: see issue #64102 <https://github.com/rust-lang/rust/issues/64102> for more information
[INFO] [stdout]     = help: add `#![feature(bench_black_box)]` to the crate attributes to enable
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0658]: use of unstable library feature 'bench_black_box'
[INFO] [stdout]    --> src/task.rs:164:17
[INFO] [stdout]     |
[INFO] [stdout] 164 |         let _ = black_box(out);
[INFO] [stdout]     |                 ^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: see issue #64102 <https://github.com/rust-lang/rust/issues/64102> for more information
[INFO] [stdout]     = help: add `#![feature(bench_black_box)]` to the crate attributes to enable
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0658]: use of unstable library feature 'bench_black_box'
[INFO] [stdout]    --> src/task.rs:145:9
[INFO] [stdout]     |
[INFO] [stdout] 145 |     use std::hint::black_box;
[INFO] [stdout]     |         ^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: see issue #64102 <https://github.com/rust-lang/rust/issues/64102> for more information
[INFO] [stdout]     = help: add `#![feature(bench_black_box)]` to the crate attributes to enable
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 9 previous errors
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0658`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `ocron`
[INFO] [stderr] 
[INFO] [stderr] To learn more, run the command again with --verbose.
[INFO] running `Command { std: "docker" "inspect" "fec8f59b3379ce5953c73c33f7b51bd9fc3fcf59f014bb78593b46a5356fafb1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "fec8f59b3379ce5953c73c33f7b51bd9fc3fcf59f014bb78593b46a5356fafb1", kill_on_drop: false }`
[INFO] [stdout] fec8f59b3379ce5953c73c33f7b51bd9fc3fcf59f014bb78593b46a5356fafb1
