[INFO] fetching crate nursery 0.0.1...
[INFO] testing nursery-0.0.1 against 1.49.0 for beta-1.50-1
[INFO] extracting crate nursery 0.0.1 into /workspace/builds/worker-8/source
[INFO] validating manifest of crates.io crate nursery 0.0.1 on toolchain 1.49.0
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.49.0" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking crates.io crate nursery 0.0.1
[INFO] finished tweaking crates.io crate nursery 0.0.1
[INFO] tweaked toml for crates.io crate nursery 0.0.1 written to /workspace/builds/worker-8/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.49.0" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.49.0" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[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" "rustops/crates-build-env@sha256:c8ac004eab7d63a0ad09a2dde3d3353ba464f767bee4de425dc8f74c46a1905e" "/opt/rustwide/cargo-home/bin/cargo" "+1.49.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 68c3e7207344661c3200e5f0cca64eaff05861c2d56f14fb91ec2cf127c7b540
[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" "68c3e7207344661c3200e5f0cca64eaff05861c2d56f14fb91ec2cf127c7b540", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "68c3e7207344661c3200e5f0cca64eaff05861c2d56f14fb91ec2cf127c7b540", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "68c3e7207344661c3200e5f0cca64eaff05861c2d56f14fb91ec2cf127c7b540", kill_on_drop: false }`
[INFO] [stdout] 68c3e7207344661c3200e5f0cca64eaff05861c2d56f14fb91ec2cf127c7b540
[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=warn" "-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:c8ac004eab7d63a0ad09a2dde3d3353ba464f767bee4de425dc8f74c46a1905e" "/opt/rustwide/cargo-home/bin/cargo" "+1.49.0" "build" "--frozen" "--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] 717b0256555a1ef23180772e6a4330124ca62c410f9807cd05ba8b1024afc6fb
[INFO] running `Command { std: "docker" "start" "-a" "717b0256555a1ef23180772e6a4330124ca62c410f9807cd05ba8b1024afc6fb", kill_on_drop: false }`
[INFO] [stderr]    Compiling nursery v0.0.1 (/opt/rustwide/workdir)
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/thread.rs:87:29
[INFO] [stdout]    |
[INFO] [stdout] 87 |     err_handler: Option<Box<FnMut() -> () + 'a>>,
[INFO] [stdout]    |                             ^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn FnMut() -> () + 'a`
[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/lib.rs:109:43
[INFO] [stdout]     |
[INFO] [stdout] 109 |     pub fn schedule(&mut self, mut h: Box<Schedulable>) {
[INFO] [stdout]     |                                           ^^^^^^^^^^^ help: use `dyn`: `dyn Schedulable`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.58s
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "717b0256555a1ef23180772e6a4330124ca62c410f9807cd05ba8b1024afc6fb", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "717b0256555a1ef23180772e6a4330124ca62c410f9807cd05ba8b1024afc6fb", kill_on_drop: false }`
[INFO] [stdout] 717b0256555a1ef23180772e6a4330124ca62c410f9807cd05ba8b1024afc6fb
[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=warn" "-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:c8ac004eab7d63a0ad09a2dde3d3353ba464f767bee4de425dc8f74c46a1905e" "/opt/rustwide/cargo-home/bin/cargo" "+1.49.0" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 3660f7f02c77c4496ce493226e10daf1906e8424e657863f3200d4e9fac990be
[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" "3660f7f02c77c4496ce493226e10daf1906e8424e657863f3200d4e9fac990be", kill_on_drop: false }`
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/thread.rs:87:29
[INFO] [stdout]    |
[INFO] [stdout] 87 |     err_handler: Option<Box<FnMut() -> () + 'a>>,
[INFO] [stdout]    |                             ^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn FnMut() -> () + 'a`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(bare_trait_objects)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]    Compiling nursery v0.0.1 (/opt/rustwide/workdir)
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/lib.rs:109:43
[INFO] [stdout]     |
[INFO] [stdout] 109 |     pub fn schedule(&mut self, mut h: Box<Schedulable>) {
[INFO] [stdout]     |                                           ^^^^^^^^^^^ help: use `dyn`: `dyn Schedulable`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/thread.rs:87:29
[INFO] [stdout]    |
[INFO] [stdout] 87 |     err_handler: Option<Box<FnMut() -> () + 'a>>,
[INFO] [stdout]    |                             ^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn FnMut() -> () + 'a`
[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/lib.rs:109:43
[INFO] [stdout]     |
[INFO] [stdout] 109 |     pub fn schedule(&mut self, mut h: Box<Schedulable>) {
[INFO] [stdout]     |                                           ^^^^^^^^^^^ help: use `dyn`: `dyn Schedulable`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 1.47s
[INFO] running `Command { std: "docker" "inspect" "3660f7f02c77c4496ce493226e10daf1906e8424e657863f3200d4e9fac990be", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "3660f7f02c77c4496ce493226e10daf1906e8424e657863f3200d4e9fac990be", kill_on_drop: false }`
[INFO] [stdout] 3660f7f02c77c4496ce493226e10daf1906e8424e657863f3200d4e9fac990be
[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=warn" "-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:c8ac004eab7d63a0ad09a2dde3d3353ba464f767bee4de425dc8f74c46a1905e" "/opt/rustwide/cargo-home/bin/cargo" "+1.49.0" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] 93960963112f38effb0fe36834a685a0325bb2cdf754813d818ddebd9f19f7cf
[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" "93960963112f38effb0fe36834a685a0325bb2cdf754813d818ddebd9f19f7cf", kill_on_drop: false }`
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/thread.rs:87:29
[INFO] [stderr]    |
[INFO] [stderr] 87 |     err_handler: Option<Box<FnMut() -> () + 'a>>,
[INFO] [stderr]    |                             ^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn FnMut() -> () + 'a`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(bare_trait_objects)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]    --> src/lib.rs:109:43
[INFO] [stderr]     |
[INFO] [stderr] 109 |     pub fn schedule(&mut self, mut h: Box<Schedulable>) {
[INFO] [stderr]     |                                           ^^^^^^^^^^^ help: use `dyn`: `dyn Schedulable`
[INFO] [stderr] 
[INFO] [stderr] warning: 2 warnings emitted
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/thread.rs:87:29
[INFO] [stderr]    |
[INFO] [stderr] 87 |     err_handler: Option<Box<FnMut() -> () + 'a>>,
[INFO] [stderr]    |                             ^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn FnMut() -> () + 'a`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(bare_trait_objects)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]    --> src/lib.rs:109:43
[INFO] [stderr]     |
[INFO] [stderr] 109 |     pub fn schedule(&mut self, mut h: Box<Schedulable>) {
[INFO] [stderr]     |                                           ^^^^^^^^^^^ help: use `dyn`: `dyn Schedulable`
[INFO] [stderr] 
[INFO] [stderr] warning: 2 warnings emitted
[INFO] [stderr] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.01s
[INFO] [stdout] 
[INFO] [stderr]      Running /opt/rustwide/target/debug/deps/nursery-845ce7b73fdf2529
[INFO] [stdout] running 8 tests
[INFO] [stdout] test test::child_nursery_wait_is_idempotent ... ok
[INFO] [stdout] test test::nursery_wait_is_idempotent ... ok
[INFO] [stdout] test test::dropped_nurseries_wait_on_all_children ... ok
[INFO] [stdout] test test::child_nursery_runs_handles ... ok
[INFO] [stdout] test test::thread_handle_wait_is_idempotent ... ok
[INFO] [stdout] test test::thread_handle_runs ... ok
[INFO] [stdout] test test::nursery_runs_handles ... ok
[INFO] [stderr]    Doc-tests nursery
[INFO] [stdout] test test::thread_handle_runs_failure_handler ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 8 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] running 2 tests
[INFO] [stdout] test src/thread.rs - thread::Handle (line 59) ... ok
[INFO] [stdout] test src/lib.rs - (line 25) ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 2 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "93960963112f38effb0fe36834a685a0325bb2cdf754813d818ddebd9f19f7cf", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "93960963112f38effb0fe36834a685a0325bb2cdf754813d818ddebd9f19f7cf", kill_on_drop: false }`
[INFO] [stdout] 93960963112f38effb0fe36834a685a0325bb2cdf754813d818ddebd9f19f7cf