[INFO] fetching crate pubsub 0.2.3...
[INFO] testing pubsub-0.2.3 against 1.54.0 for beta-1.55-1
[INFO] extracting crate pubsub 0.2.3 into /workspace/builds/worker-58/source
[INFO] validating manifest of crates.io crate pubsub 0.2.3 on toolchain 1.54.0
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.54.0" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate pubsub 0.2.3
[INFO] finished tweaking crates.io crate pubsub 0.2.3
[INFO] tweaked toml for crates.io crate pubsub 0.2.3 written to /workspace/builds/worker-58/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.54.0" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.54.0" "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-58/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-58/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@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+1.54.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] a3a8c55777a3d25f221890ec4932a03a7e65658e272e29a539f951b8d8b3c737
[INFO] running `Command { std: "docker" "start" "-a" "a3a8c55777a3d25f221890ec4932a03a7e65658e272e29a539f951b8d8b3c737", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "a3a8c55777a3d25f221890ec4932a03a7e65658e272e29a539f951b8d8b3c737", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "a3a8c55777a3d25f221890ec4932a03a7e65658e272e29a539f951b8d8b3c737", kill_on_drop: false }`
[INFO] [stdout] a3a8c55777a3d25f221890ec4932a03a7e65658e272e29a539f951b8d8b3c737
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-58/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-58/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" "ghcr.io/rust-lang/crates-build-env/linux@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+1.54.0" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 43f8d1378e84473eb229aa29bb29a40d2fe02e20001bbc104cbaa254d58f940a
[INFO] running `Command { std: "docker" "start" "-a" "43f8d1378e84473eb229aa29bb29a40d2fe02e20001bbc104cbaa254d58f940a", kill_on_drop: false }`
[INFO] [stderr]    Compiling threadpool v0.1.4
[INFO] [stderr]    Compiling pubsub v0.2.3 (/opt/rustwide/workdir)
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/lib.rs:52:29
[INFO] [stdout]    |
[INFO] [stdout] 52 |     func: Option<Arc<Mutex<Box<FnMut(String) + Send>>>>
[INFO] [stdout]    |                                ^^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn FnMut(String) + Send`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(bare_trait_objects)]` on by default
[INFO] [stdout]    = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in the 2021 edition!
[INFO] [stdout]    = note: for more information, see issue #80165 <https://github.com/rust-lang/rust/issues/80165>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/lib.rs:192:10
[INFO] [stdout]     |
[INFO] [stdout] 192 |                     let mut func = guard.deref_mut();
[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: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 3.13s
[INFO] running `Command { std: "docker" "inspect" "43f8d1378e84473eb229aa29bb29a40d2fe02e20001bbc104cbaa254d58f940a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "43f8d1378e84473eb229aa29bb29a40d2fe02e20001bbc104cbaa254d58f940a", kill_on_drop: false }`
[INFO] [stdout] 43f8d1378e84473eb229aa29bb29a40d2fe02e20001bbc104cbaa254d58f940a
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-58/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-58/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" "ghcr.io/rust-lang/crates-build-env/linux@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+1.54.0" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 70e4d0ba7e725cd2cf419626c61f6e2df1681248effead8373aa51d8aee35773
[INFO] running `Command { std: "docker" "start" "-a" "70e4d0ba7e725cd2cf419626c61f6e2df1681248effead8373aa51d8aee35773", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]    Compiling pubsub v0.2.3 (/opt/rustwide/workdir)
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/lib.rs:52:29
[INFO] [stdout]    |
[INFO] [stdout] 52 |     func: Option<Arc<Mutex<Box<FnMut(String) + Send>>>>
[INFO] [stdout]    |                                ^^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn FnMut(String) + Send`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(bare_trait_objects)]` on by default
[INFO] [stdout]    = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in the 2021 edition!
[INFO] [stdout]    = note: for more information, see issue #80165 <https://github.com/rust-lang/rust/issues/80165>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/lib.rs:192:10
[INFO] [stdout]     |
[INFO] [stdout] 192 |                     let mut func = guard.deref_mut();
[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: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/lib.rs:52:29
[INFO] [stdout]    |
[INFO] [stdout] 52 |     func: Option<Arc<Mutex<Box<FnMut(String) + Send>>>>
[INFO] [stdout]    |                                ^^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn FnMut(String) + Send`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(bare_trait_objects)]` on by default
[INFO] [stdout]    = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in the 2021 edition!
[INFO] [stdout]    = note: for more information, see issue #80165 <https://github.com/rust-lang/rust/issues/80165>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/lib.rs:192:10
[INFO] [stdout]     |
[INFO] [stdout] 192 |                     let mut func = guard.deref_mut();
[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: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 4.48s
[INFO] running `Command { std: "docker" "inspect" "70e4d0ba7e725cd2cf419626c61f6e2df1681248effead8373aa51d8aee35773", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "70e4d0ba7e725cd2cf419626c61f6e2df1681248effead8373aa51d8aee35773", kill_on_drop: false }`
[INFO] [stdout] 70e4d0ba7e725cd2cf419626c61f6e2df1681248effead8373aa51d8aee35773
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-58/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-58/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" "ghcr.io/rust-lang/crates-build-env/linux@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+1.54.0" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] 92ab64169119b9b81c326ca02372c08782f23adb2cb6e903f0f9f5e62aa5f32c
[INFO] running `Command { std: "docker" "start" "-a" "92ab64169119b9b81c326ca02372c08782f23adb2cb6e903f0f9f5e62aa5f32c", kill_on_drop: false }`
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/lib.rs:52:29
[INFO] [stderr]    |
[INFO] [stderr] 52 |     func: Option<Arc<Mutex<Box<FnMut(String) + Send>>>>
[INFO] [stderr]    |                                ^^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn FnMut(String) + Send`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(bare_trait_objects)]` on by default
[INFO] [stderr]    = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in the 2021 edition!
[INFO] [stderr]    = note: for more information, see issue #80165 <https://github.com/rust-lang/rust/issues/80165>
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]    --> src/lib.rs:192:10
[INFO] [stderr]     |
[INFO] [stderr] 192 |                     let mut func = guard.deref_mut();
[INFO] [stderr]     |                         ----^^^^
[INFO] [stderr]     |                         |
[INFO] [stderr]     |                         help: remove this `mut`
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(unused_mut)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: 2 warnings emitted
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/lib.rs:52:29
[INFO] [stderr]    |
[INFO] [stderr] 52 |     func: Option<Arc<Mutex<Box<FnMut(String) + Send>>>>
[INFO] [stderr]    |                                ^^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn FnMut(String) + Send`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(bare_trait_objects)]` on by default
[INFO] [stderr]    = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in the 2021 edition!
[INFO] [stderr]    = note: for more information, see issue #80165 <https://github.com/rust-lang/rust/issues/80165>
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]    --> src/lib.rs:192:10
[INFO] [stderr]     |
[INFO] [stderr] 192 |                     let mut func = guard.deref_mut();
[INFO] [stderr]     |                         ----^^^^
[INFO] [stderr]     |                         |
[INFO] [stderr]     |                         help: remove this `mut`
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(unused_mut)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: 2 warnings emitted
[INFO] [stderr] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.05s
[INFO] [stderr]      Running unittests (/opt/rustwide/target/debug/deps/pubsub-612db533792d53d4)
[INFO] [stdout] 
[INFO] [stdout] running 3 tests
[INFO] [stdout] test test::lazy_subscribe ... ok
[INFO] [stdout] test test::notify_exception ... ok
[INFO] [stdout] test test::basic_test ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 3 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 2.50s
[INFO] [stdout] 
[INFO] [stderr]    Doc-tests pubsub
[INFO] [stdout] 
[INFO] [stdout] running 0 tests
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "92ab64169119b9b81c326ca02372c08782f23adb2cb6e903f0f9f5e62aa5f32c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "92ab64169119b9b81c326ca02372c08782f23adb2cb6e903f0f9f5e62aa5f32c", kill_on_drop: false }`
[INFO] [stdout] 92ab64169119b9b81c326ca02372c08782f23adb2cb6e903f0f9f5e62aa5f32c
