[INFO] fetching crate liboj-cgroups 0.1.0...
[INFO] checking liboj-cgroups-0.1.0 against try#72f88fc4e9458f89516a0b8b0868f3718aec5b47 for pr-74989
[INFO] extracting crate liboj-cgroups 0.1.0 into /workspace/builds/worker-12/source
[INFO] validating manifest of crates.io crate liboj-cgroups 0.1.0 on toolchain 72f88fc4e9458f89516a0b8b0868f3718aec5b47
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+72f88fc4e9458f89516a0b8b0868f3718aec5b47" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking crates.io crate liboj-cgroups 0.1.0
[INFO] finished tweaking crates.io crate liboj-cgroups 0.1.0
[INFO] tweaked toml for crates.io crate liboj-cgroups 0.1.0 written to /workspace/builds/worker-12/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+72f88fc4e9458f89516a0b8b0868f3718aec5b47" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+72f88fc4e9458f89516a0b8b0868f3718aec5b47" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/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:d92eaeed33fa75130ca1ee6c8a01d1ffb62bac859dfdfb3450e3e5d1c0146529" "/opt/rustwide/cargo-home/bin/cargo" "+72f88fc4e9458f89516a0b8b0868f3718aec5b47" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 9d40e287f3ee80a819e2864ea5e0510e7d9fd78c014aae9442295f25c45aaefe
[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" "9d40e287f3ee80a819e2864ea5e0510e7d9fd78c014aae9442295f25c45aaefe", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "9d40e287f3ee80a819e2864ea5e0510e7d9fd78c014aae9442295f25c45aaefe", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "9d40e287f3ee80a819e2864ea5e0510e7d9fd78c014aae9442295f25c45aaefe", kill_on_drop: false }`
[INFO] [stdout] 9d40e287f3ee80a819e2864ea5e0510e7d9fd78c014aae9442295f25c45aaefe
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/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:d92eaeed33fa75130ca1ee6c8a01d1ffb62bac859dfdfb3450e3e5d1c0146529" "/opt/rustwide/cargo-home/bin/cargo" "+72f88fc4e9458f89516a0b8b0868f3718aec5b47" "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] 5b2aa795a95db50883e75c8d4371da1a0467282278917a989bfc339fc0ac0bca
[INFO] running `Command { std: "docker" "start" "-a" "5b2aa795a95db50883e75c8d4371da1a0467282278917a989bfc339fc0ac0bca", kill_on_drop: false }`
[INFO] [stderr]     Checking getrandom v0.1.15
[INFO] [stderr]     Checking nix v0.17.0
[INFO] [stderr]     Checking rand_core v0.5.1
[INFO] [stderr]     Checking rand_chacha v0.2.2
[INFO] [stderr]     Checking rand v0.7.3
[INFO] [stderr]     Checking uuid v0.8.1
[INFO] [stderr]     Checking liboj-cgroups v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: a method with this name may be added to the standard library in the future
[INFO] [stdout]   --> src/tests.rs:46:23
[INFO] [stdout]    |
[INFO] [stdout] 46 |     assert!(stat.user.is_zero());
[INFO] [stdout]    |                       ^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unstable_name_collisions)]` on by default
[INFO] [stdout]    = warning: once this method is added to the standard library, the ambiguity may cause an error or change in behavior!
[INFO] [stdout]    = note: for more information, see issue #48919 <https://github.com/rust-lang/rust/issues/48919>
[INFO] [stdout]    = help: call with fully qualified syntax `IsZero::is_zero(...)` to keep using the current method
[INFO] [stdout]    = help: add `#![feature(duration_zero)]` to the crate attributes to enable `Duration::is_zero`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: a method with this name may be added to the standard library in the future
[INFO] [stdout]   --> src/tests.rs:47:25
[INFO] [stdout]    |
[INFO] [stdout] 47 |     assert!(stat.system.is_zero());
[INFO] [stdout]    |                         ^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = warning: once this method is added to the standard library, the ambiguity may cause an error or change in behavior!
[INFO] [stdout]    = note: for more information, see issue #48919 <https://github.com/rust-lang/rust/issues/48919>
[INFO] [stdout]    = help: call with fully qualified syntax `IsZero::is_zero(...)` to keep using the current method
[INFO] [stdout]    = help: add `#![feature(duration_zero)]` to the crate attributes to enable `Duration::is_zero`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: a method with this name may be added to the standard library in the future
[INFO] [stdout]   --> src/tests.rs:48:40
[INFO] [stdout]    |
[INFO] [stdout] 48 |     assert!(controller.usage().read()?.is_zero());
[INFO] [stdout]    |                                        ^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = warning: once this method is added to the standard library, the ambiguity may cause an error or change in behavior!
[INFO] [stdout]    = note: for more information, see issue #48919 <https://github.com/rust-lang/rust/issues/48919>
[INFO] [stdout]    = help: call with fully qualified syntax `IsZero::is_zero(...)` to keep using the current method
[INFO] [stdout]    = help: add `#![feature(duration_zero)]` to the crate attributes to enable `Duration::is_zero`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: a method with this name may be added to the standard library in the future
[INFO] [stdout]   --> src/tests.rs:49:45
[INFO] [stdout]    |
[INFO] [stdout] 49 |     assert!(controller.usage_user().read()?.is_zero());
[INFO] [stdout]    |                                             ^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = warning: once this method is added to the standard library, the ambiguity may cause an error or change in behavior!
[INFO] [stdout]    = note: for more information, see issue #48919 <https://github.com/rust-lang/rust/issues/48919>
[INFO] [stdout]    = help: call with fully qualified syntax `IsZero::is_zero(...)` to keep using the current method
[INFO] [stdout]    = help: add `#![feature(duration_zero)]` to the crate attributes to enable `Duration::is_zero`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: a method with this name may be added to the standard library in the future
[INFO] [stdout]   --> src/tests.rs:50:44
[INFO] [stdout]    |
[INFO] [stdout] 50 |     assert!(controller.usage_sys().read()?.is_zero());
[INFO] [stdout]    |                                            ^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = warning: once this method is added to the standard library, the ambiguity may cause an error or change in behavior!
[INFO] [stdout]    = note: for more information, see issue #48919 <https://github.com/rust-lang/rust/issues/48919>
[INFO] [stdout]    = help: call with fully qualified syntax `IsZero::is_zero(...)` to keep using the current method
[INFO] [stdout]    = help: add `#![feature(duration_zero)]` to the crate attributes to enable `Duration::is_zero`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: a method with this name may be added to the standard library in the future
[INFO] [stdout]   --> src/tests.rs:57:27
[INFO] [stdout]    |
[INFO] [stdout] 57 |             && usage.user.is_zero()
[INFO] [stdout]    |                           ^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = warning: once this method is added to the standard library, the ambiguity may cause an error or change in behavior!
[INFO] [stdout]    = note: for more information, see issue #48919 <https://github.com/rust-lang/rust/issues/48919>
[INFO] [stdout]    = help: call with fully qualified syntax `IsZero::is_zero(...)` to keep using the current method
[INFO] [stdout]    = help: add `#![feature(duration_zero)]` to the crate attributes to enable `Duration::is_zero`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: a method with this name may be added to the standard library in the future
[INFO] [stdout]   --> src/tests.rs:58:29
[INFO] [stdout]    |
[INFO] [stdout] 58 |             && usage.system.is_zero()));
[INFO] [stdout]    |                             ^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = warning: once this method is added to the standard library, the ambiguity may cause an error or change in behavior!
[INFO] [stdout]    = note: for more information, see issue #48919 <https://github.com/rust-lang/rust/issues/48919>
[INFO] [stdout]    = help: call with fully qualified syntax `IsZero::is_zero(...)` to keep using the current method
[INFO] [stdout]    = help: add `#![feature(duration_zero)]` to the crate attributes to enable `Duration::is_zero`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: a method with this name may be added to the standard library in the future
[INFO] [stdout]   --> src/tests.rs:63:39
[INFO] [stdout]    |
[INFO] [stdout] 63 |         .for_each(|time| assert!(time.is_zero()));
[INFO] [stdout]    |                                       ^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = warning: once this method is added to the standard library, the ambiguity may cause an error or change in behavior!
[INFO] [stdout]    = note: for more information, see issue #48919 <https://github.com/rust-lang/rust/issues/48919>
[INFO] [stdout]    = help: call with fully qualified syntax `IsZero::is_zero(...)` to keep using the current method
[INFO] [stdout]    = help: add `#![feature(duration_zero)]` to the crate attributes to enable `Duration::is_zero`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: a method with this name may be added to the standard library in the future
[INFO] [stdout]   --> src/tests.rs:68:39
[INFO] [stdout]    |
[INFO] [stdout] 68 |         .for_each(|time| assert!(time.is_zero()));
[INFO] [stdout]    |                                       ^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = warning: once this method is added to the standard library, the ambiguity may cause an error or change in behavior!
[INFO] [stdout]    = note: for more information, see issue #48919 <https://github.com/rust-lang/rust/issues/48919>
[INFO] [stdout]    = help: call with fully qualified syntax `IsZero::is_zero(...)` to keep using the current method
[INFO] [stdout]    = help: add `#![feature(duration_zero)]` to the crate attributes to enable `Duration::is_zero`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: a method with this name may be added to the standard library in the future
[INFO] [stdout]   --> src/tests.rs:73:39
[INFO] [stdout]    |
[INFO] [stdout] 73 |         .for_each(|time| assert!(time.is_zero()));
[INFO] [stdout]    |                                       ^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = warning: once this method is added to the standard library, the ambiguity may cause an error or change in behavior!
[INFO] [stdout]    = note: for more information, see issue #48919 <https://github.com/rust-lang/rust/issues/48919>
[INFO] [stdout]    = help: call with fully qualified syntax `IsZero::is_zero(...)` to keep using the current method
[INFO] [stdout]    = help: add `#![feature(duration_zero)]` to the crate attributes to enable `Duration::is_zero`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 10 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 11.06s
[INFO] running `Command { std: "docker" "inspect" "5b2aa795a95db50883e75c8d4371da1a0467282278917a989bfc339fc0ac0bca", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "5b2aa795a95db50883e75c8d4371da1a0467282278917a989bfc339fc0ac0bca", kill_on_drop: false }`
[INFO] [stdout] 5b2aa795a95db50883e75c8d4371da1a0467282278917a989bfc339fc0ac0bca
