[INFO] fetching crate jobsteal 0.5.1...
[INFO] checking jobsteal-0.5.1 against master#cfbc6d4cf1acbac5c025acf8ed68929caa551df3 for pr-75494-beta
[INFO] extracting crate jobsteal 0.5.1 into /workspace/builds/worker-0/source
[INFO] validating manifest of crates.io crate jobsteal 0.5.1 on toolchain cfbc6d4cf1acbac5c025acf8ed68929caa551df3
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+cfbc6d4cf1acbac5c025acf8ed68929caa551df3" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking crates.io crate jobsteal 0.5.1
[INFO] finished tweaking crates.io crate jobsteal 0.5.1
[INFO] tweaked toml for crates.io crate jobsteal 0.5.1 written to /workspace/builds/worker-0/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+cfbc6d4cf1acbac5c025acf8ed68929caa551df3" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+cfbc6d4cf1acbac5c025acf8ed68929caa551df3" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/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:a636fd89d022f18117e1dc8fb37a0a009933cdbbe082814857f0e2024962d47c" "/opt/rustwide/cargo-home/bin/cargo" "+cfbc6d4cf1acbac5c025acf8ed68929caa551df3" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 9de16f16264af833fca5222a9396a1699a3b8ae4e9ba1f02eece8b1c54f09f19
[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" "9de16f16264af833fca5222a9396a1699a3b8ae4e9ba1f02eece8b1c54f09f19", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "9de16f16264af833fca5222a9396a1699a3b8ae4e9ba1f02eece8b1c54f09f19", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "9de16f16264af833fca5222a9396a1699a3b8ae4e9ba1f02eece8b1c54f09f19", kill_on_drop: false }`
[INFO] [stdout] 9de16f16264af833fca5222a9396a1699a3b8ae4e9ba1f02eece8b1c54f09f19
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/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:a636fd89d022f18117e1dc8fb37a0a009933cdbbe082814857f0e2024962d47c" "/opt/rustwide/cargo-home/bin/cargo" "+cfbc6d4cf1acbac5c025acf8ed68929caa551df3" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 2ed5d3ae56dff0c80d22ebfa90560b3bdfc2418b35effc0a691857bef36c7b38
[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" "2ed5d3ae56dff0c80d22ebfa90560b3bdfc2418b35effc0a691857bef36c7b38", kill_on_drop: false }`
[INFO] [stderr]     Checking rand v0.4.6
[INFO] [stderr]     Checking rand v0.3.23
[INFO] [stderr]     Checking jobsteal v0.5.1 (/opt/rustwide/workdir)
[INFO] [stdout] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stdout]    --> src/lib.rs:319:26
[INFO] [stdout]     |
[INFO] [stdout] 319 |             let handle = try!(builder.spawn(move || worker_main(worker)));
[INFO] [stdout]     |                          ^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(deprecated)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/job.rs:63:14
[INFO] [stdout]    |
[INFO] [stdout] 63 |     Heap(Box<Thunk>),
[INFO] [stdout]    |              ^^^^^ help: use `dyn`: `dyn Thunk`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(bare_trait_objects)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/job.rs:88:34
[INFO] [stdout]    |
[INFO] [stdout] 88 |             let static_code: Box<Thunk> = unsafe { mem::transmute(Box::new(code) as Box<Thunk + 'a>) };
[INFO] [stdout]    |                                  ^^^^^ help: use `dyn`: `dyn Thunk`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/job.rs:88:89
[INFO] [stdout]    |
[INFO] [stdout] 88 |             let static_code: Box<Thunk> = unsafe { mem::transmute(Box::new(code) as Box<Thunk + 'a>) };
[INFO] [stdout]    |                                                                                         ^^^^^^^^^^ help: use `dyn`: `dyn Thunk + 'a`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/job.rs:101:31
[INFO] [stdout]     |
[INFO] [stdout] 101 |             let fat_ptr: *mut Thunk = code_ptr;
[INFO] [stdout]     |                               ^^^^^ help: use `dyn`: `dyn Thunk`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/job.rs:129:36
[INFO] [stdout]     |
[INFO] [stdout] 129 |                 let code_ptr: *mut Thunk = mem::transmute(t_obj);
[INFO] [stdout]     |                                    ^^^^^ help: use `dyn`: `dyn Thunk`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around type
[INFO] [stdout]   --> src/iter/map.rs:86:30
[INFO] [stdout]    |
[INFO] [stdout] 86 |     fn call<I: Iterator<Item=(&'a U)>>(self, iter: I) -> Self::Out {
[INFO] [stdout]    |                              ^^^^^^^ help: remove these parentheses
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_parens)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around type
[INFO] [stdout]   --> src/iter/map.rs:92:28
[INFO] [stdout]    |
[INFO] [stdout] 92 | where T: Consumer<In, Item=(&'a U)> {
[INFO] [stdout]    |                            ^^^^^^^ help: remove these parentheses
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around type
[INFO] [stdout]    --> src/iter/map.rs:100:80
[INFO] [stdout]     |
[INFO] [stdout] 100 | impl<'a, T, U: Clone + 'a> Spliterator for Cloned<T> where T: Spliterator<Item=(&'a U)> {
[INFO] [stdout]     |                                                                                ^^^^^^^ help: remove these parentheses
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stdout]    --> src/lib.rs:319:26
[INFO] [stdout]     |
[INFO] [stdout] 319 |             let handle = try!(builder.spawn(move || worker_main(worker)));
[INFO] [stdout]     |                          ^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(deprecated)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/job.rs:63:14
[INFO] [stdout]    |
[INFO] [stdout] 63 |     Heap(Box<Thunk>),
[INFO] [stdout]    |              ^^^^^ help: use `dyn`: `dyn Thunk`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(bare_trait_objects)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/job.rs:88:34
[INFO] [stdout]    |
[INFO] [stdout] 88 |             let static_code: Box<Thunk> = unsafe { mem::transmute(Box::new(code) as Box<Thunk + 'a>) };
[INFO] [stdout]    |                                  ^^^^^ help: use `dyn`: `dyn Thunk`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/job.rs:88:89
[INFO] [stdout]    |
[INFO] [stdout] 88 |             let static_code: Box<Thunk> = unsafe { mem::transmute(Box::new(code) as Box<Thunk + 'a>) };
[INFO] [stdout]    |                                                                                         ^^^^^^^^^^ help: use `dyn`: `dyn Thunk + 'a`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/job.rs:101:31
[INFO] [stdout]     |
[INFO] [stdout] 101 |             let fat_ptr: *mut Thunk = code_ptr;
[INFO] [stdout]     |                               ^^^^^ help: use `dyn`: `dyn Thunk`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/job.rs:129:36
[INFO] [stdout]     |
[INFO] [stdout] 129 |                 let code_ptr: *mut Thunk = mem::transmute(t_obj);
[INFO] [stdout]     |                                    ^^^^^ help: use `dyn`: `dyn Thunk`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around type
[INFO] [stdout]   --> src/iter/map.rs:86:30
[INFO] [stdout]    |
[INFO] [stdout] 86 |     fn call<I: Iterator<Item=(&'a U)>>(self, iter: I) -> Self::Out {
[INFO] [stdout]    |                              ^^^^^^^ help: remove these parentheses
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_parens)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around type
[INFO] [stdout]   --> src/iter/map.rs:92:28
[INFO] [stdout]    |
[INFO] [stdout] 92 | where T: Consumer<In, Item=(&'a U)> {
[INFO] [stdout]    |                            ^^^^^^^ help: remove these parentheses
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around type
[INFO] [stdout]    --> src/iter/map.rs:100:80
[INFO] [stdout]     |
[INFO] [stdout] 100 | impl<'a, T, U: Clone + 'a> Spliterator for Cloned<T> where T: Spliterator<Item=(&'a U)> {
[INFO] [stdout]     |                                                                                ^^^^^^^ help: remove these parentheses
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/arena.rs:62:13
[INFO] [stdout]    |
[INFO] [stdout] 62 |         let mut buf = self.buf.get();
[INFO] [stdout]    |             ----^^^
[INFO] [stdout]    |             |
[INFO] [stdout]    |             help: remove this `mut`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_mut)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/arena.rs:62:13
[INFO] [stdout]    |
[INFO] [stdout] 62 |         let mut buf = self.buf.get();
[INFO] [stdout]    |             ----^^^
[INFO] [stdout]    |             |
[INFO] [stdout]    |             help: remove this `mut`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_mut)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 10 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 10 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 2.47s
[INFO] running `Command { std: "docker" "inspect" "2ed5d3ae56dff0c80d22ebfa90560b3bdfc2418b35effc0a691857bef36c7b38", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "2ed5d3ae56dff0c80d22ebfa90560b3bdfc2418b35effc0a691857bef36c7b38", kill_on_drop: false }`
[INFO] [stdout] 2ed5d3ae56dff0c80d22ebfa90560b3bdfc2418b35effc0a691857bef36c7b38
