[INFO] fetching crate parking_lot_mpsc 0.1.5...
[INFO] checking parking_lot_mpsc-0.1.5 against try#b2c2190fa7bf856bb0ed5e8806266e3a2135c6f8 for pr-78363
[INFO] extracting crate parking_lot_mpsc 0.1.5 into /workspace/builds/worker-7/source
[INFO] validating manifest of crates.io crate parking_lot_mpsc 0.1.5 on toolchain b2c2190fa7bf856bb0ed5e8806266e3a2135c6f8
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+b2c2190fa7bf856bb0ed5e8806266e3a2135c6f8" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking crates.io crate parking_lot_mpsc 0.1.5
[INFO] finished tweaking crates.io crate parking_lot_mpsc 0.1.5
[INFO] tweaked toml for crates.io crate parking_lot_mpsc 0.1.5 written to /workspace/builds/worker-7/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+b2c2190fa7bf856bb0ed5e8806266e3a2135c6f8" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+b2c2190fa7bf856bb0ed5e8806266e3a2135c6f8" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/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" "+b2c2190fa7bf856bb0ed5e8806266e3a2135c6f8" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] cc1a8c38ae3c6fc6addaa7f9c32bc47de8741b0752055dba8dc34991236a1695
[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" "cc1a8c38ae3c6fc6addaa7f9c32bc47de8741b0752055dba8dc34991236a1695", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "cc1a8c38ae3c6fc6addaa7f9c32bc47de8741b0752055dba8dc34991236a1695", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "cc1a8c38ae3c6fc6addaa7f9c32bc47de8741b0752055dba8dc34991236a1695", kill_on_drop: false }`
[INFO] [stdout] cc1a8c38ae3c6fc6addaa7f9c32bc47de8741b0752055dba8dc34991236a1695
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/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" "+b2c2190fa7bf856bb0ed5e8806266e3a2135c6f8" "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] e975415a0c9afdcfc58593bc0d1fab2f3d3479b7d170438b115b4313c9242f36
[INFO] running `Command { std: "docker" "start" "-a" "e975415a0c9afdcfc58593bc0d1fab2f3d3479b7d170438b115b4313c9242f36", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]    Compiling libc v0.2.80
[INFO] [stderr]     Checking owning_ref v0.3.3
[INFO] [stderr]     Checking rand v0.4.6
[INFO] [stderr]     Checking parking_lot_core v0.2.14
[INFO] [stderr]     Checking parking_lot v0.4.8
[INFO] [stderr]     Checking parking_lot_mpsc v0.1.5 (/opt/rustwide/workdir)
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/select.rs:108:19
[INFO] [stdout]     |
[INFO] [stdout] 108 |     packet: &'rx (Packet+'rx),
[INFO] [stdout]     |                   ^^^^^^^^^^ help: use `dyn`: `dyn Packet+'rx`
[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:1538:32
[INFO] [stdout]      |
[INFO] [stdout] 1538 |     fn cause(&self) -> Option<&error::Error> {
[INFO] [stdout]      |                                ^^^^^^^^^^^^ help: use `dyn`: `dyn error::Error`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]     --> src/lib.rs:1578:32
[INFO] [stdout]      |
[INFO] [stdout] 1578 |     fn cause(&self) -> Option<&error::Error> {
[INFO] [stdout]      |                                ^^^^^^^^^^^^ help: use `dyn`: `dyn error::Error`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]     --> src/lib.rs:1595:32
[INFO] [stdout]      |
[INFO] [stdout] 1595 |     fn cause(&self) -> Option<&error::Error> {
[INFO] [stdout]      |                                ^^^^^^^^^^^^ help: use `dyn`: `dyn error::Error`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]     --> src/lib.rs:1626:32
[INFO] [stdout]      |
[INFO] [stdout] 1626 |     fn cause(&self) -> Option<&error::Error> {
[INFO] [stdout]      |                                ^^^^^^^^^^^^ help: use `dyn`: `dyn error::Error`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]     --> src/lib.rs:1656:32
[INFO] [stdout]      |
[INFO] [stdout] 1656 |     fn cause(&self) -> Option<&error::Error> {
[INFO] [stdout]      |                                ^^^^^^^^^^^^ help: use `dyn`: `dyn error::Error`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/select.rs:108:19
[INFO] [stdout]     |
[INFO] [stdout] 108 |     packet: &'rx (Packet+'rx),
[INFO] [stdout]     |                   ^^^^^^^^^^ help: use `dyn`: `dyn Packet+'rx`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(bare_trait_objects)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary braces around block return value
[INFO] [stdout]    --> src/select.rs:390:34
[INFO] [stdout]     |
[INFO] [stdout] 390 |             _bar = rx2.recv() => { panic!() }
[INFO] [stdout]     |                                  ^^^^^^^^^^^^ help: remove these braces
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_braces)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary braces around block return value
[INFO] [stdout]    --> src/select.rs:394:34
[INFO] [stdout]     |
[INFO] [stdout] 394 |             _foo = rx1.recv() => { panic!() },
[INFO] [stdout]     |                                  ^^^^^^^^^^^^ help: remove these braces
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary braces around block return value
[INFO] [stdout]    --> src/select.rs:395:33
[INFO] [stdout]     |
[INFO] [stdout] 395 |             bar = rx2.recv() => { assert_eq!(bar.unwrap(), 2) }
[INFO] [stdout]     |                                 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: remove these braces
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary braces around block return value
[INFO] [stdout]    --> src/select.rs:400:34
[INFO] [stdout]     |
[INFO] [stdout] 400 |             _bar = rx2.recv() => { panic!() }
[INFO] [stdout]     |                                  ^^^^^^^^^^^^ help: remove these braces
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary braces around block return value
[INFO] [stdout]    --> src/select.rs:417:34
[INFO] [stdout]     |
[INFO] [stdout] 417 |             _foo = rx1.recv() => { panic!("1") },
[INFO] [stdout]     |                                  ^^^^^^^^^^^^^^^ help: remove these braces
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary braces around block return value
[INFO] [stdout]    --> src/select.rs:418:34
[INFO] [stdout]     |
[INFO] [stdout] 418 |             _foo = rx2.recv() => { panic!("2") },
[INFO] [stdout]     |                                  ^^^^^^^^^^^^^^^ help: remove these braces
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary braces around block return value
[INFO] [stdout]    --> src/select.rs:419:34
[INFO] [stdout]     |
[INFO] [stdout] 419 |             _foo = rx3.recv() => { panic!("3") },
[INFO] [stdout]     |                                  ^^^^^^^^^^^^^^^ help: remove these braces
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary braces around block return value
[INFO] [stdout]    --> src/select.rs:420:34
[INFO] [stdout]     |
[INFO] [stdout] 420 |             _foo = rx4.recv() => { panic!("4") },
[INFO] [stdout]     |                                  ^^^^^^^^^^^^^^^ help: remove these braces
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary braces around block return value
[INFO] [stdout]    --> src/select.rs:432:33
[INFO] [stdout]     |
[INFO] [stdout] 432 |             _a1 = rx1.recv() => { panic!() },
[INFO] [stdout]     |                                 ^^^^^^^^^^^^ help: remove these braces
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary braces around block return value
[INFO] [stdout]    --> src/select.rs:452:32
[INFO] [stdout]     |
[INFO] [stdout] 452 |             _b = rx2.recv() => { panic!() }
[INFO] [stdout]     |                                ^^^^^^^^^^^^ help: remove these braces
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary braces around block return value
[INFO] [stdout]    --> src/select.rs:456:31
[INFO] [stdout]     |
[INFO] [stdout] 456 |             a = rx1.recv() => { assert!(a.is_err()) },
[INFO] [stdout]     |                               ^^^^^^^^^^^^^^^^^^^^^^^ help: remove these braces
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary braces around block return value
[INFO] [stdout]    --> src/select.rs:457:32
[INFO] [stdout]     |
[INFO] [stdout] 457 |             _b = rx2.recv() => { panic!() }
[INFO] [stdout]     |                                ^^^^^^^^^^^^ help: remove these braces
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]     --> src/lib.rs:1538:32
[INFO] [stdout]      |
[INFO] [stdout] 1538 |     fn cause(&self) -> Option<&error::Error> {
[INFO] [stdout]      |                                ^^^^^^^^^^^^ help: use `dyn`: `dyn error::Error`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]     --> src/lib.rs:1578:32
[INFO] [stdout]      |
[INFO] [stdout] 1578 |     fn cause(&self) -> Option<&error::Error> {
[INFO] [stdout]      |                                ^^^^^^^^^^^^ help: use `dyn`: `dyn error::Error`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]     --> src/lib.rs:1595:32
[INFO] [stdout]      |
[INFO] [stdout] 1595 |     fn cause(&self) -> Option<&error::Error> {
[INFO] [stdout]      |                                ^^^^^^^^^^^^ help: use `dyn`: `dyn error::Error`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]     --> src/lib.rs:1626:32
[INFO] [stdout]      |
[INFO] [stdout] 1626 |     fn cause(&self) -> Option<&error::Error> {
[INFO] [stdout]      |                                ^^^^^^^^^^^^ help: use `dyn`: `dyn error::Error`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]     --> src/lib.rs:1656:32
[INFO] [stdout]      |
[INFO] [stdout] 1656 |     fn cause(&self) -> Option<&error::Error> {
[INFO] [stdout]      |                                ^^^^^^^^^^^^ help: use `dyn`: `dyn error::Error`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 6 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused return value of `clone` that must be used
[INFO] [stdout]    --> src/select.rs:522:13
[INFO] [stdout]     |
[INFO] [stdout] 522 |             tx1.clone();
[INFO] [stdout]     |             ^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_must_use)]` on by default
[INFO] [stdout]     = note: cloning is often expensive and is not expected to have side effects
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused return value of `clone` that must be used
[INFO] [stdout]    --> src/select.rs:544:13
[INFO] [stdout]     |
[INFO] [stdout] 544 |             tx1.clone();
[INFO] [stdout]     |             ^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: cloning is often expensive and is not expected to have side effects
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 20 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 8.21s
[INFO] running `Command { std: "docker" "inspect" "e975415a0c9afdcfc58593bc0d1fab2f3d3479b7d170438b115b4313c9242f36", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "e975415a0c9afdcfc58593bc0d1fab2f3d3479b7d170438b115b4313c9242f36", kill_on_drop: false }`
[INFO] [stdout] e975415a0c9afdcfc58593bc0d1fab2f3d3479b7d170438b115b4313c9242f36