[INFO] crate bollard 0.4.0-alpha.1 is already in cache
[INFO] checking bollard-0.4.0-alpha.1 against try#1a608893c03d7722effeb0058e82770bd36b4b3c for pr-66504-1
[INFO] extracting crate bollard 0.4.0-alpha.1 into /workspace/builds/worker-0/source
[INFO] validating manifest of crates.io crate bollard 0.4.0-alpha.1 on toolchain 1a608893c03d7722effeb0058e82770bd36b4b3c
[INFO] running `"/workspace/cargo-home/bin/cargo" "+1a608893c03d7722effeb0058e82770bd36b4b3c" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started tweaking crates.io crate bollard 0.4.0-alpha.1
[INFO] finished tweaking crates.io crate bollard 0.4.0-alpha.1
[INFO] tweaked toml for crates.io crate bollard 0.4.0-alpha.1 written to /workspace/builds/worker-0/source/Cargo.toml
[INFO] crate crates.io crate bollard 0.4.0-alpha.1 already has a lockfile, it will not be regenerated
[INFO] running `"/workspace/cargo-home/bin/cargo" "+1a608893c03d7722effeb0058e82770bd36b4b3c" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `"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" "MAP_USER_ID=0" "-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" "--network" "none" "rustops/crates-build-env" "/opt/rustwide/cargo-home/bin/cargo" "+1a608893c03d7722effeb0058e82770bd36b4b3c" "check" "--frozen" "--all" "--all-targets"`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] ad870de162745907ea44881829d32469b28b4f54a9ed83e4d0948d468e886087
[INFO] running `"docker" "start" "-a" "ad870de162745907ea44881829d32469b28b4f54a9ed83e4d0948d468e886087"`
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[INFO] [stderr] warning: unused macro definition
[INFO] [stderr]    --> src/lib.rs:325:1
[INFO] [stderr]     |
[INFO] [stderr] 325 | / macro_rules! chain_stream {
[INFO] [stderr] 326 | |     ($self:ident, $invoc:expr) => {{
[INFO] [stderr] 327 | |         use futures_util::stream;
[INFO] [stderr] 328 | |         use futures_util::stream::StreamExt;
[INFO] [stderr] ...   |
[INFO] [stderr] 347 | |     }};
[INFO] [stderr] 348 | | }
[INFO] [stderr]     | |_^
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(unused_macros)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused macro definition
[INFO] [stderr]    --> src/lib.rs:325:1
[INFO] [stderr]     |
[INFO] [stderr] 325 | / macro_rules! chain_stream {
[INFO] [stderr] 326 | |     ($self:ident, $invoc:expr) => {{
[INFO] [stderr] 327 | |         use futures_util::stream;
[INFO] [stderr] 328 | |         use futures_util::stream::StreamExt;
[INFO] [stderr] ...   |
[INFO] [stderr] 347 | |     }};
[INFO] [stderr] 348 | | }
[INFO] [stderr]     | |_^
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(unused_macros)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `futures_util::stream`
[INFO] [stderr]   --> examples/stats.rs:10:5
[INFO] [stderr]    |
[INFO] [stderr] 10 | use futures_util::stream;
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_imports)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unreachable call
[INFO] [stderr]   --> examples/stats.rs:35:20
[INFO] [stderr]    |
[INFO] [stderr] 35 |             return Err(bail!("no running containers"));
[INFO] [stderr]    |                    ^^^ ------------------------------ any code following this expression is unreachable
[INFO] [stderr]    |                    |
[INFO] [stderr]    |                    unreachable call
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unreachable_code)]` on by default
[INFO] [stderr]    = note: this warning originates in a macro outside of the current crate (in Nightly builds, run with -Z external-macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `std::future::Future`
[INFO] [stderr]  --> tests/version_test.rs:3:5
[INFO] [stderr]   |
[INFO] [stderr] 3 | use std::future::Future;
[INFO] [stderr]   |     ^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `tokio::future::ok`
[INFO] [stderr]   --> tests/system_test.rs:11:5
[INFO] [stderr]    |
[INFO] [stderr] 11 | use tokio::future::ok;
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_imports)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `t`
[INFO] [stderr]   --> tests/system_test.rs:68:59
[INFO] [stderr]    |
[INFO] [stderr] 68 |             Results::EventsResults(EventsResults { type_: t, .. }) => true,
[INFO] [stderr]    |                                                           ^ help: consider prefixing with an underscore: `_t`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `futures_util::stream::StreamExt`
[INFO] [stderr]  --> tests/exec_test.rs:8:5
[INFO] [stderr]   |
[INFO] [stderr] 8 | use futures_util::stream::StreamExt;
[INFO] [stderr]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused `std::result::Result` that must be used
[INFO] [stderr]   --> examples/error.rs:18:5
[INFO] [stderr]    |
[INFO] [stderr] 18 |     run();
[INFO] [stderr]    |     ^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_must_use)]` on by default
[INFO] [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1m 33s
[INFO] running `"docker" "inspect" "ad870de162745907ea44881829d32469b28b4f54a9ed83e4d0948d468e886087"`
[INFO] running `"docker" "rm" "-f" "ad870de162745907ea44881829d32469b28b4f54a9ed83e4d0948d468e886087"`
[INFO] [stdout] ad870de162745907ea44881829d32469b28b4f54a9ed83e4d0948d468e886087