[INFO] fetching crate negatable-set 0.1.0...
[INFO] checking negatable-set-0.1.0 against master#7f5a42b073dc2bee2aa625052eb066ee07072048 for pr-78991
[INFO] extracting crate negatable-set 0.1.0 into /workspace/builds/worker-9/source
[INFO] validating manifest of crates.io crate negatable-set 0.1.0 on toolchain 7f5a42b073dc2bee2aa625052eb066ee07072048
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+7f5a42b073dc2bee2aa625052eb066ee07072048" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking crates.io crate negatable-set 0.1.0
[INFO] finished tweaking crates.io crate negatable-set 0.1.0
[INFO] tweaked toml for crates.io crate negatable-set 0.1.0 written to /workspace/builds/worker-9/source/Cargo.toml
[INFO] crate crates.io crate negatable-set 0.1.0 already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+7f5a42b073dc2bee2aa625052eb066ee07072048" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/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@sha256:6eabd152ff4036248d66efda456a36cb33d24b7291b33f25f75140726c88da35" "/opt/rustwide/cargo-home/bin/cargo" "+7f5a42b073dc2bee2aa625052eb066ee07072048" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] e5cabc6f7ef25d51e97a1e9bcb6f8ca52765ed0e9787fc4860ea6298921b1697
[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" "e5cabc6f7ef25d51e97a1e9bcb6f8ca52765ed0e9787fc4860ea6298921b1697", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "e5cabc6f7ef25d51e97a1e9bcb6f8ca52765ed0e9787fc4860ea6298921b1697", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "e5cabc6f7ef25d51e97a1e9bcb6f8ca52765ed0e9787fc4860ea6298921b1697", kill_on_drop: false }`
[INFO] [stdout] e5cabc6f7ef25d51e97a1e9bcb6f8ca52765ed0e9787fc4860ea6298921b1697
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/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@sha256:6eabd152ff4036248d66efda456a36cb33d24b7291b33f25f75140726c88da35" "/opt/rustwide/cargo-home/bin/cargo" "+7f5a42b073dc2bee2aa625052eb066ee07072048" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 3762022063e498008f8d23af20ef86a04e9bc3f36187e9e9612178f5e832e88e
[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" "3762022063e498008f8d23af20ef86a04e9bc3f36187e9e9612178f5e832e88e", kill_on_drop: false }`
[INFO] [stderr]     Checking cfg-if v0.1.10
[INFO] [stderr]    Compiling getrandom v0.1.15
[INFO] [stderr]    Compiling proc-macro2 v1.0.24
[INFO] [stderr]    Compiling serde v1.0.117
[INFO] [stderr]    Compiling unicode-xid v0.2.1
[INFO] [stderr]    Compiling autocfg v1.0.1
[INFO] [stderr]     Checking lazy_static v1.4.0
[INFO] [stderr]    Compiling ryu v1.0.5
[INFO] [stderr]    Compiling serde_json v1.0.59
[INFO] [stderr]     Checking itoa v0.4.6
[INFO] [stderr]     Checking smallvec v1.4.2
[INFO] [stderr]     Checking sorted-iter v0.1.7
[INFO] [stderr]     Checking aho-corasick v0.7.14
[INFO] [stderr]     Checking log v0.4.11
[INFO] [stderr]     Checking thread_local v1.0.1
[INFO] [stderr]    Compiling num-traits v0.2.14
[INFO] [stderr]     Checking rand_core v0.5.1
[INFO] [stderr]     Checking rand_chacha v0.2.2
[INFO] [stderr]    Compiling quote v1.0.7
[INFO] [stderr]     Checking rand v0.7.3
[INFO] [stderr]    Compiling syn v1.0.48
[INFO] [stderr]     Checking regex v1.4.2
[INFO] [stderr]     Checking env_logger v0.7.1
[INFO] [stderr]     Checking quickcheck v0.9.2
[INFO] [stderr]     Checking vec-collections v0.3.3
[INFO] [stderr]     Checking negatable-set v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr]    Compiling quickcheck_macros v0.9.1
[INFO] [stdout] warning: unused macro definition
[INFO] [stdout]   --> src/test_macros.rs:2:1
[INFO] [stdout]    |
[INFO] [stdout] 2  | / macro_rules! bitop_symmetry {
[INFO] [stdout] 3  | |     ($test:ty) => {
[INFO] [stdout] 4  | |         #[quickcheck]
[INFO] [stdout] 5  | |         fn bitor_symmetric(a: $test, b: $test) -> bool {
[INFO] [stdout] ...  |
[INFO] [stdout] 18 | |     };
[INFO] [stdout] 19 | | }
[INFO] [stdout]    | |_^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_macros)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused macro definition
[INFO] [stdout]   --> src/test_macros.rs:22:1
[INFO] [stdout]    |
[INFO] [stdout] 22 | / macro_rules! bitop_empty {
[INFO] [stdout] 23 | |     ($test:ty) => {
[INFO] [stdout] 24 | |         #[quickcheck]
[INFO] [stdout] 25 | |         fn bitand_empty_neutral(a: $test) -> bool {
[INFO] [stdout] ...  |
[INFO] [stdout] 47 | |     };
[INFO] [stdout] 48 | | }
[INFO] [stdout]    | |_^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused macro definition
[INFO] [stdout]   --> src/test_macros.rs:51:1
[INFO] [stdout]    |
[INFO] [stdout] 51 | / macro_rules! bitop_sub_not_all {
[INFO] [stdout] 52 | |     ($test:ty) => {
[INFO] [stdout] 53 | |         #[quickcheck]
[INFO] [stdout] 54 | |         fn bitand_all_neutral(x: $test) -> bool {
[INFO] [stdout] ...  |
[INFO] [stdout] 93 | |     };
[INFO] [stdout] 94 | | }
[INFO] [stdout]    | |_^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused macro definition
[INFO] [stdout]    --> src/test_macros.rs:97:1
[INFO] [stdout]     |
[INFO] [stdout] 97  | / macro_rules! bitop_assign_consistent {
[INFO] [stdout] 98  | |     ($test:ty) => {
[INFO] [stdout] 99  | |         #[quickcheck]
[INFO] [stdout] 100 | |         fn bitand_assign_consistent(a: $test, b: $test) -> bool {
[INFO] [stdout] ...   |
[INFO] [stdout] 127 | |     };
[INFO] [stdout] 128 | | }
[INFO] [stdout]     | |_^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused macro definition
[INFO] [stdout]    --> src/test_macros.rs:131:1
[INFO] [stdout]     |
[INFO] [stdout] 131 | / macro_rules! set_predicate_consistent {
[INFO] [stdout] 132 | |     ($test:ty) => {
[INFO] [stdout] 133 | |         #[quickcheck]
[INFO] [stdout] 134 | |         fn is_disjoint_bitand_consistent(a: $test, b: $test) -> bool {
[INFO] [stdout] ...   |
[INFO] [stdout] 160 | |     };
[INFO] [stdout] 161 | | }
[INFO] [stdout]     | |_^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `quickcheck_macros::quickcheck`
[INFO] [stdout]    --> src/lib.rs:520:9
[INFO] [stdout]     |
[INFO] [stdout] 520 |     use quickcheck_macros::quickcheck;
[INFO] [stdout]     |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `vec_collections::VecSet`
[INFO] [stdout]    --> src/lib.rs:521:9
[INFO] [stdout]     |
[INFO] [stdout] 521 |     use vec_collections::VecSet;
[INFO] [stdout]     |         ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 7 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 31.33s
[INFO] running `Command { std: "docker" "inspect" "3762022063e498008f8d23af20ef86a04e9bc3f36187e9e9612178f5e832e88e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "3762022063e498008f8d23af20ef86a04e9bc3f36187e9e9612178f5e832e88e", kill_on_drop: false }`
[INFO] [stdout] 3762022063e498008f8d23af20ef86a04e9bc3f36187e9e9612178f5e832e88e