[INFO] fetching crate selfstack 0.3.0...
[INFO] checking selfstack-0.3.0 against try#9c1dcf141bc0875407c4eb36972857bd3db713e2 for pr-81863
[INFO] extracting crate selfstack 0.3.0 into /workspace/builds/worker-1/source
[INFO] validating manifest of crates.io crate selfstack 0.3.0 on toolchain 9c1dcf141bc0875407c4eb36972857bd3db713e2
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+9c1dcf141bc0875407c4eb36972857bd3db713e2" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate selfstack 0.3.0
[INFO] finished tweaking crates.io crate selfstack 0.3.0
[INFO] tweaked toml for crates.io crate selfstack 0.3.0 written to /workspace/builds/worker-1/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+9c1dcf141bc0875407c4eb36972857bd3db713e2" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+9c1dcf141bc0875407c4eb36972857bd3db713e2" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/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:ce6408862c0f4858e6cd2b85b2cf085ff7d0d6323904d0a94b71664a228554ab" "/opt/rustwide/cargo-home/bin/cargo" "+9c1dcf141bc0875407c4eb36972857bd3db713e2" "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] 51712d29514722f7d692e35fed467970ceeeee1da8e6aa22134efa0462e87b80
[INFO] running `Command { std: "docker" "start" "-a" "51712d29514722f7d692e35fed467970ceeeee1da8e6aa22134efa0462e87b80", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "51712d29514722f7d692e35fed467970ceeeee1da8e6aa22134efa0462e87b80", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "51712d29514722f7d692e35fed467970ceeeee1da8e6aa22134efa0462e87b80", kill_on_drop: false }`
[INFO] [stdout] 51712d29514722f7d692e35fed467970ceeeee1da8e6aa22134efa0462e87b80
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/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:ce6408862c0f4858e6cd2b85b2cf085ff7d0d6323904d0a94b71664a228554ab" "/opt/rustwide/cargo-home/bin/cargo" "+9c1dcf141bc0875407c4eb36972857bd3db713e2" "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] 51bbb6b9c772a6c66b854b9dd6d7f30085fce066e3d989badf51e4d972901c5c
[INFO] running `Command { std: "docker" "start" "-a" "51bbb6b9c772a6c66b854b9dd6d7f30085fce066e3d989badf51e4d972901c5c", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v0.4.30
[INFO] [stderr]    Compiling syn v0.15.44
[INFO] [stderr]    Compiling unicode-xid v0.1.0
[INFO] [stderr]    Compiling quote v0.6.13
[INFO] [stderr]     Checking selfstack v0.3.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unnecessary trailing semicolon
[INFO] [stdout]    --> src/lib.rs:436:10
[INFO] [stdout]     |
[INFO] [stdout] 436 |         };
[INFO] [stdout]     |          ^ help: remove this semicolon
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(redundant_semicolons)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary trailing semicolon
[INFO] [stdout]    --> src/lib.rs:436:10
[INFO] [stdout]     |
[INFO] [stdout] 436 |         };
[INFO] [stdout]     |          ^ help: remove this semicolon
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(redundant_semicolons)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary trailing semicolon
[INFO] [stdout]    --> src/lib.rs:436:10
[INFO] [stdout]     |
[INFO] [stdout] 436 |         };
[INFO] [stdout]     |          ^ help: remove this semicolon
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(redundant_semicolons)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `a`
[INFO] [stdout]   --> tests/test_mut_ref.rs:9:9
[INFO] [stdout]    |
[INFO] [stdout] 9  | /         pub(super) struct Store<'a> {
[INFO] [stdout] 10 | |             a: A<'a>,
[INFO] [stdout]    | |____________________^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `a`
[INFO] [stdout]  --> tests/test_mut.rs:8:9
[INFO] [stdout]   |
[INFO] [stdout] 8 | /         pub(super) struct Store {
[INFO] [stdout] 9 | |             a: A,
[INFO] [stdout]   | |________________^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 25.76s
[INFO] running `Command { std: "docker" "inspect" "51bbb6b9c772a6c66b854b9dd6d7f30085fce066e3d989badf51e4d972901c5c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "51bbb6b9c772a6c66b854b9dd6d7f30085fce066e3d989badf51e4d972901c5c", kill_on_drop: false }`
[INFO] [stdout] 51bbb6b9c772a6c66b854b9dd6d7f30085fce066e3d989badf51e4d972901c5c