[INFO] fetching crate lossyq 0.1.19...
[INFO] checking lossyq-0.1.19 against master#7b3a7819371cef92a187e9bac8f7810ccde15216 for pr-74846
[INFO] extracting crate lossyq 0.1.19 into /workspace/builds/worker-4/source
[INFO] validating manifest of crates.io crate lossyq 0.1.19 on toolchain 7b3a7819371cef92a187e9bac8f7810ccde15216
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+7b3a7819371cef92a187e9bac8f7810ccde15216" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking crates.io crate lossyq 0.1.19
[INFO] finished tweaking crates.io crate lossyq 0.1.19
[INFO] tweaked toml for crates.io crate lossyq 0.1.19 written to /workspace/builds/worker-4/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+7b3a7819371cef92a187e9bac8f7810ccde15216" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+7b3a7819371cef92a187e9bac8f7810ccde15216" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/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:a636fd89d022f18117e1dc8fb37a0a009933cdbbe082814857f0e2024962d47c" "/opt/rustwide/cargo-home/bin/cargo" "+7b3a7819371cef92a187e9bac8f7810ccde15216" "metadata" "--no-deps" "--format-version=1", 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] b2150faaf431075cf568a59dea60338ac6de8340cada8e9e4d2f5753c4cbd9b0
[INFO] running `Command { std: "docker" "start" "-a" "b2150faaf431075cf568a59dea60338ac6de8340cada8e9e4d2f5753c4cbd9b0", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "b2150faaf431075cf568a59dea60338ac6de8340cada8e9e4d2f5753c4cbd9b0", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "b2150faaf431075cf568a59dea60338ac6de8340cada8e9e4d2f5753c4cbd9b0", kill_on_drop: false }`
[INFO] [stdout] b2150faaf431075cf568a59dea60338ac6de8340cada8e9e4d2f5753c4cbd9b0
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/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:a636fd89d022f18117e1dc8fb37a0a009933cdbbe082814857f0e2024962d47c" "/opt/rustwide/cargo-home/bin/cargo" "+7b3a7819371cef92a187e9bac8f7810ccde15216" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 7e9e28a5893d2ced3832c9a53aad413f366004838f5b6443fe7c236c360a017d
[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" "7e9e28a5893d2ced3832c9a53aad413f366004838f5b6443fe7c236c360a017d", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.74
[INFO] [stderr]     Checking lossyq v0.1.19 (/opt/rustwide/workdir)
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/spsc/noloss.rs:16:37
[INFO] [stdout]    |
[INFO] [stdout] 16 |                      overflow: &mut Overflow<Input=T>)
[INFO] [stdout]    |                                     ^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn Overflow<Input=T>`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(bare_trait_objects)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Checking time v0.1.43
[INFO] [stdout] warning: unnecessary parentheses around block return value
[INFO] [stdout]    --> src/cb/tests.rs:144:71
[INFO] [stdout]     |
[INFO] [stdout] 144 |   let c = x.iter().fold(String::new(), |mut acc,x| { acc.push_str(x); (acc) } );
[INFO] [stdout]     |                                                                       ^^^^^ help: remove these parentheses
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_parens)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/spsc/noloss.rs:16:37
[INFO] [stdout]    |
[INFO] [stdout] 16 |                      overflow: &mut Overflow<Input=T>)
[INFO] [stdout]    |                                     ^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn Overflow<Input=T>`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(bare_trait_objects)]` 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 3.18s
[INFO] running `Command { std: "docker" "inspect" "7e9e28a5893d2ced3832c9a53aad413f366004838f5b6443fe7c236c360a017d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "7e9e28a5893d2ced3832c9a53aad413f366004838f5b6443fe7c236c360a017d", kill_on_drop: false }`
[INFO] [stdout] 7e9e28a5893d2ced3832c9a53aad413f366004838f5b6443fe7c236c360a017d