[INFO] fetching crate broker-tokio 0.2.16...
[INFO] checking broker-tokio-0.2.16 against master#4d0dd02ee07bddad9136f95c9f7846ebf3eb3fc5 for pr-81174
[INFO] extracting crate broker-tokio 0.2.16 into /workspace/builds/worker-6/source
[INFO] validating manifest of crates.io crate broker-tokio 0.2.16 on toolchain 4d0dd02ee07bddad9136f95c9f7846ebf3eb3fc5
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+4d0dd02ee07bddad9136f95c9f7846ebf3eb3fc5" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking crates.io crate broker-tokio 0.2.16
[INFO] finished tweaking crates.io crate broker-tokio 0.2.16
[INFO] tweaked toml for crates.io crate broker-tokio 0.2.16 written to /workspace/builds/worker-6/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+4d0dd02ee07bddad9136f95c9f7846ebf3eb3fc5" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+4d0dd02ee07bddad9136f95c9f7846ebf3eb3fc5" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/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@sha256:21f1ed92105a0ef9b0d27ad8bdeb7f36f9f01ac17fffe3a3f3dc5241fc25d8f4" "/opt/rustwide/cargo-home/bin/cargo" "+4d0dd02ee07bddad9136f95c9f7846ebf3eb3fc5" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] d89bf6d5a46c8687cbcec6664ea0bca757a783f2ffeb31dbecd4bc6de7193712
[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" "d89bf6d5a46c8687cbcec6664ea0bca757a783f2ffeb31dbecd4bc6de7193712", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "d89bf6d5a46c8687cbcec6664ea0bca757a783f2ffeb31dbecd4bc6de7193712", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "d89bf6d5a46c8687cbcec6664ea0bca757a783f2ffeb31dbecd4bc6de7193712", kill_on_drop: false }`
[INFO] [stdout] d89bf6d5a46c8687cbcec6664ea0bca757a783f2ffeb31dbecd4bc6de7193712
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/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@sha256:21f1ed92105a0ef9b0d27ad8bdeb7f36f9f01ac17fffe3a3f3dc5241fc25d8f4" "/opt/rustwide/cargo-home/bin/cargo" "+4d0dd02ee07bddad9136f95c9f7846ebf3eb3fc5" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 0690b7c7b8a6597e4398bbd1d3025c27d7e2c35d020122e1604769c5ef29a5e6
[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" "0690b7c7b8a6597e4398bbd1d3025c27d7e2c35d020122e1604769c5ef29a5e6", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.82
[INFO] [stderr]    Compiling proc-macro2 v1.0.24
[INFO] [stderr]    Compiling unicode-xid v0.2.1
[INFO] [stderr]    Compiling autocfg v0.1.7
[INFO] [stderr]     Checking rand_core v0.4.2
[INFO] [stderr]    Compiling proc-macro-hack v0.5.19
[INFO] [stderr]     Checking cfg-if v1.0.0
[INFO] [stderr]     Checking slab v0.4.2
[INFO] [stderr]    Compiling memchr v2.3.4
[INFO] [stderr]    Compiling semver-parser v0.7.0
[INFO] [stderr]     Checking once_cell v1.5.2
[INFO] [stderr]    Compiling serde_derive v1.0.123
[INFO] [stderr]    Compiling autocfg v1.0.1
[INFO] [stderr]    Compiling log v0.4.13
[INFO] [stderr]    Compiling ryu v1.0.5
[INFO] [stderr]    Compiling serde_json v1.0.61
[INFO] [stderr]     Checking cfg-if v0.1.10
[INFO] [stderr]     Checking bit-vec v0.6.3
[INFO] [stderr]     Checking itoa v0.4.7
[INFO] [stderr]     Checking quick-error v1.2.3
[INFO] [stderr]     Checking lazy_static v1.4.0
[INFO] [stderr]     Checking regex-syntax v0.6.22
[INFO] [stderr]     Checking scoped-tls v0.1.2
[INFO] [stderr]     Checking futures-channel v0.3.12
[INFO] [stderr]     Checking tokio v0.2.24
[INFO] [stderr]     Checking broker-tokio v0.2.16 (/opt/rustwide/workdir)
[INFO] [stdout] warning: lint `intra_doc_link_resolution_failure` has been renamed to `broken_intra_doc_links`
[INFO] [stdout]   --> src/lib.rs:13:9
[INFO] [stdout]    |
[INFO] [stdout] 13 | #![deny(intra_doc_link_resolution_failure)]
[INFO] [stdout]    |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: use the new name: `broken_intra_doc_links`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(renamed_and_removed_lints)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Checking rand_core v0.3.1
[INFO] [stderr]     Checking rand_jitter v0.1.4
[INFO] [stderr]     Checking futures-task v0.3.12
[INFO] [stderr]    Compiling semver v0.9.0
[INFO] [stdout] warning: use of deprecated function `std::sync::atomic::spin_loop_hint`: use hint::spin_loop instead
[INFO] [stdout]   --> src/loom/std/mod.rs:49:44
[INFO] [stdout]    |
[INFO] [stdout] 49 |         pub(crate) use std::sync::atomic::{spin_loop_hint, AtomicBool};
[INFO] [stdout]    |                                            ^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(deprecated)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Checking bit-set v0.5.2
[INFO] [stderr]     Checking rand_isaac v0.1.1
[INFO] [stderr]     Checking rand_xorshift v0.1.1
[INFO] [stderr]     Checking rand_hc v0.1.0
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]    Compiling rustc_version v0.2.3
[INFO] [stderr]    Compiling num-traits v0.2.14
[INFO] [stderr]    Compiling rand_pcg v0.1.2
[INFO] [stderr]    Compiling rand_chacha v0.1.1
[INFO] [stderr]    Compiling rand v0.6.5
[INFO] [stderr]    Compiling generator v0.6.23
[INFO] [stderr]    Compiling quote v1.0.8
[INFO] [stderr]    Compiling syn v1.0.60
[INFO] [stderr]     Checking getrandom v0.2.2
[INFO] [stderr]     Checking rand_os v0.1.3
[INFO] [stderr]     Checking wait-timeout v0.2.0
[INFO] [stderr]     Checking rand_core v0.6.1
[INFO] [stderr]     Checking rand_chacha v0.3.0
[INFO] [stderr]     Checking rand v0.8.3
[INFO] [stderr]     Checking tokio-test v0.2.1
[INFO] [stderr]     Checking tempfile v3.2.0
[INFO] [stderr]     Checking rusty-fork v0.2.2
[INFO] [stderr]     Checking proptest v0.9.6
[INFO] [stderr]    Compiling futures-macro v0.3.12
[INFO] [stderr]     Checking futures-util v0.3.12
[INFO] [stderr]     Checking futures-executor v0.3.12
[INFO] [stderr]     Checking futures v0.3.12
[INFO] [stderr]     Checking serde v1.0.123
[INFO] [stderr]     Checking loom v0.2.15
[INFO] [stdout] warning: lint `intra_doc_link_resolution_failure` has been renamed to `broken_intra_doc_links`
[INFO] [stdout]   --> src/lib.rs:13:9
[INFO] [stdout]    |
[INFO] [stdout] 13 | #![deny(intra_doc_link_resolution_failure)]
[INFO] [stdout]    |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: use the new name: `broken_intra_doc_links`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(renamed_and_removed_lints)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated function `std::sync::atomic::spin_loop_hint`: use hint::spin_loop instead
[INFO] [stdout]   --> src/loom/std/mod.rs:49:44
[INFO] [stdout]    |
[INFO] [stdout] 49 |         pub(crate) use std::sync::atomic::{spin_loop_hint, AtomicBool};
[INFO] [stdout]    |                                            ^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(deprecated)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `backoff`
[INFO] [stdout]  --> src/tests/backoff.rs:7:15
[INFO] [stdout]   |
[INFO] [stdout] 7 | pub(crate) fn backoff(n: usize) -> impl Future<Output = ()> {
[INFO] [stdout]   |               ^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `backoff_clone`
[INFO] [stdout]   --> src/tests/backoff.rs:12:15
[INFO] [stdout]    |
[INFO] [stdout] 12 | pub(crate) fn backoff_clone(n: usize) -> impl Future<Output = ()> {
[INFO] [stdout]    |               ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `track_drop`
[INFO] [stdout]   --> src/tests/track_drop.rs:14:15
[INFO] [stdout]    |
[INFO] [stdout] 14 | pub(crate) fn track_drop<T: Future>(
[INFO] [stdout]    |               ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `get_ref`
[INFO] [stdout]   --> src/tests/track_drop.rs:29:19
[INFO] [stdout]    |
[INFO] [stdout] 29 |     pub(crate) fn get_ref(&self) -> &T {
[INFO] [stdout]    |                   ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `did_drop_future`
[INFO] [stdout]   --> src/tests/track_drop.rs:50:19
[INFO] [stdout]    |
[INFO] [stdout] 50 |     pub(crate) fn did_drop_future(&self) -> bool {
[INFO] [stdout]    |                   ^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `did_drop_output`
[INFO] [stdout]   --> src/tests/track_drop.rs:54:19
[INFO] [stdout]    |
[INFO] [stdout] 54 |     pub(crate) fn did_drop_output(&self) -> bool {
[INFO] [stdout]    |                   ^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 8 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1m 10s
[INFO] running `Command { std: "docker" "inspect" "0690b7c7b8a6597e4398bbd1d3025c27d7e2c35d020122e1604769c5ef29a5e6", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "0690b7c7b8a6597e4398bbd1d3025c27d7e2c35d020122e1604769c5ef29a5e6", kill_on_drop: false }`
[INFO] [stdout] 0690b7c7b8a6597e4398bbd1d3025c27d7e2c35d020122e1604769c5ef29a5e6