[INFO] crate marksweep 0.1.0 is already in cache
[INFO] testing marksweep-0.1.0 against beta-2020-06-03 for beta-1.45-1
[INFO] extracting crate marksweep 0.1.0 into /workspace/builds/worker-10/source
[INFO] validating manifest of crates.io crate marksweep 0.1.0 on toolchain beta-2020-06-03
[INFO] running `"/workspace/cargo-home/bin/cargo" "+beta-2020-06-03" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started tweaking crates.io crate marksweep 0.1.0
[INFO] finished tweaking crates.io crate marksweep 0.1.0
[INFO] tweaked toml for crates.io crate marksweep 0.1.0 written to /workspace/builds/worker-10/source/Cargo.toml
[INFO] running `"/workspace/cargo-home/bin/cargo" "+beta-2020-06-03" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"`
[INFO] running `"/workspace/cargo-home/bin/cargo" "+beta-2020-06-03" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-10/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-10/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=warn" "-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" "+beta-2020-06-03" "build" "--frozen"`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] 03cc0375333d1cfae387a3667c81c2ee5a1df1400110c2d54a2d815d0f15ac01
[INFO] running `"docker" "start" "-a" "03cc0375333d1cfae387a3667c81c2ee5a1df1400110c2d54a2d815d0f15ac01"`
[INFO] [stderr] sudo: setrlimit(RLIMIT_CORE): Operation not permitted
[INFO] [stderr]    Compiling marksweep v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr] warning: unused variable: `x`
[INFO] [stderr]   --> src/lib.rs:17:38
[INFO] [stderr]    |
[INFO] [stderr] 17 | pub fn is_root_changes<T: MarkSweep>(x: &T) {
[INFO] [stderr]    |                                      ^ help: if this is intentional, prefix it with an underscore: `_x`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `x`
[INFO] [stderr]   --> src/lib.rs:21:27
[INFO] [stderr]    |
[INFO] [stderr] 21 | pub fn init<T: MarkSweep>(x: &T) {
[INFO] [stderr]    |                           ^ help: if this is intentional, prefix it with an underscore: `_x`
[INFO] [stderr] 
[INFO] [stderr] warning: static variable `root_set` should have an upper case name
[INFO] [stderr]   --> src/lib.rs:65:16
[INFO] [stderr]    |
[INFO] [stderr] 65 |     static ref root_set: Mutex<HashSet<Element>> = Mutex::new(HashSet::new());
[INFO] [stderr]    |                ^^^^^^^^ help: convert the identifier to upper case: `ROOT_SET`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(non_upper_case_globals)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: static variable `not_root_set` should have an upper case name
[INFO] [stderr]   --> src/lib.rs:66:16
[INFO] [stderr]    |
[INFO] [stderr] 66 |     static ref not_root_set: Mutex<HashSet<Element>> = Mutex::new(HashSet::new());
[INFO] [stderr]    |                ^^^^^^^^^^^^ help: convert the identifier to upper case: `NOT_ROOT_SET`
[INFO] [stderr] 
[INFO] [stderr] warning: 4 warnings emitted
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.61s
[INFO] running `"docker" "inspect" "03cc0375333d1cfae387a3667c81c2ee5a1df1400110c2d54a2d815d0f15ac01"`
[INFO] running `"docker" "rm" "-f" "03cc0375333d1cfae387a3667c81c2ee5a1df1400110c2d54a2d815d0f15ac01"`
[INFO] [stdout] 03cc0375333d1cfae387a3667c81c2ee5a1df1400110c2d54a2d815d0f15ac01
[INFO] running `"docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-10/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-10/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=warn" "-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" "+beta-2020-06-03" "test" "--frozen" "--no-run"`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] bc38084de0380e002269b195b3cd762e17a818410378f897a5168d9decda7d9d
[INFO] running `"docker" "start" "-a" "bc38084de0380e002269b195b3cd762e17a818410378f897a5168d9decda7d9d"`
[INFO] [stderr] sudo: setrlimit(RLIMIT_CORE): Operation not permitted
[INFO] [stderr]    Compiling marksweep v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr] warning: unused variable: `x`
[INFO] [stderr]   --> src/lib.rs:17:38
[INFO] [stderr]    |
[INFO] [stderr] 17 | pub fn is_root_changes<T: MarkSweep>(x: &T) {
[INFO] [stderr]    |                                      ^ help: if this is intentional, prefix it with an underscore: `_x`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `x`
[INFO] [stderr]   --> src/lib.rs:21:27
[INFO] [stderr]    |
[INFO] [stderr] 21 | pub fn init<T: MarkSweep>(x: &T) {
[INFO] [stderr]    |                           ^ help: if this is intentional, prefix it with an underscore: `_x`
[INFO] [stderr] 
[INFO] [stderr] warning: static variable `root_set` should have an upper case name
[INFO] [stderr]   --> src/lib.rs:65:16
[INFO] [stderr]    |
[INFO] [stderr] 65 |     static ref root_set: Mutex<HashSet<Element>> = Mutex::new(HashSet::new());
[INFO] [stderr]    |                ^^^^^^^^ help: convert the identifier to upper case: `ROOT_SET`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(non_upper_case_globals)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: static variable `not_root_set` should have an upper case name
[INFO] [stderr]   --> src/lib.rs:66:16
[INFO] [stderr]    |
[INFO] [stderr] 66 |     static ref not_root_set: Mutex<HashSet<Element>> = Mutex::new(HashSet::new());
[INFO] [stderr]    |                ^^^^^^^^^^^^ help: convert the identifier to upper case: `NOT_ROOT_SET`
[INFO] [stderr] 
[INFO] [stderr] warning: 4 warnings emitted
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `x`
[INFO] [stderr]   --> src/lib.rs:17:38
[INFO] [stderr]    |
[INFO] [stderr] 17 | pub fn is_root_changes<T: MarkSweep>(x: &T) {
[INFO] [stderr]    |                                      ^ help: if this is intentional, prefix it with an underscore: `_x`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `x`
[INFO] [stderr]   --> src/lib.rs:21:27
[INFO] [stderr]    |
[INFO] [stderr] 21 | pub fn init<T: MarkSweep>(x: &T) {
[INFO] [stderr]    |                           ^ help: if this is intentional, prefix it with an underscore: `_x`
[INFO] [stderr] 
[INFO] [stderr] warning: static variable `root_set` should have an upper case name
[INFO] [stderr]   --> src/lib.rs:65:16
[INFO] [stderr]    |
[INFO] [stderr] 65 |     static ref root_set: Mutex<HashSet<Element>> = Mutex::new(HashSet::new());
[INFO] [stderr]    |                ^^^^^^^^ help: convert the identifier to upper case: `ROOT_SET`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(non_upper_case_globals)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: static variable `not_root_set` should have an upper case name
[INFO] [stderr]   --> src/lib.rs:66:16
[INFO] [stderr]    |
[INFO] [stderr] 66 |     static ref not_root_set: Mutex<HashSet<Element>> = Mutex::new(HashSet::new());
[INFO] [stderr]    |                ^^^^^^^^^^^^ help: convert the identifier to upper case: `NOT_ROOT_SET`
[INFO] [stderr] 
[INFO] [stderr] warning: 4 warnings emitted
[INFO] [stderr] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.66s
[INFO] running `"docker" "inspect" "bc38084de0380e002269b195b3cd762e17a818410378f897a5168d9decda7d9d"`
[INFO] running `"docker" "rm" "-f" "bc38084de0380e002269b195b3cd762e17a818410378f897a5168d9decda7d9d"`
[INFO] [stdout] bc38084de0380e002269b195b3cd762e17a818410378f897a5168d9decda7d9d
[INFO] running `"docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-10/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-10/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=warn" "-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" "+beta-2020-06-03" "test" "--frozen"`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] 20d2eb8fb8e054beaefc55b98ac55ff52e6036c19a0e6ce4c38de614fd1cce89
[INFO] running `"docker" "start" "-a" "20d2eb8fb8e054beaefc55b98ac55ff52e6036c19a0e6ce4c38de614fd1cce89"`
[INFO] [stderr] sudo: setrlimit(RLIMIT_CORE): Operation not permitted
[INFO] [stderr] warning: unused variable: `x`
[INFO] [stderr]   --> src/lib.rs:17:38
[INFO] [stderr]    |
[INFO] [stderr] 17 | pub fn is_root_changes<T: MarkSweep>(x: &T) {
[INFO] [stderr]    |                                      ^ help: if this is intentional, prefix it with an underscore: `_x`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `x`
[INFO] [stderr]   --> src/lib.rs:21:27
[INFO] [stderr]    |
[INFO] [stderr] 21 | pub fn init<T: MarkSweep>(x: &T) {
[INFO] [stderr]    |                           ^ help: if this is intentional, prefix it with an underscore: `_x`
[INFO] [stderr] 
[INFO] [stderr] warning: static variable `root_set` should have an upper case name
[INFO] [stderr]   --> src/lib.rs:65:16
[INFO] [stderr]    |
[INFO] [stderr] 65 |     static ref root_set: Mutex<HashSet<Element>> = Mutex::new(HashSet::new());
[INFO] [stderr]    |                ^^^^^^^^ help: convert the identifier to upper case: `ROOT_SET`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(non_upper_case_globals)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: static variable `not_root_set` should have an upper case name
[INFO] [stderr]   --> src/lib.rs:66:16
[INFO] [stderr]    |
[INFO] [stderr] 66 |     static ref not_root_set: Mutex<HashSet<Element>> = Mutex::new(HashSet::new());
[INFO] [stderr]    |                ^^^^^^^^^^^^ help: convert the identifier to upper case: `NOT_ROOT_SET`
[INFO] [stderr] 
[INFO] [stderr] warning: 4 warnings emitted
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `x`
[INFO] [stderr]   --> src/lib.rs:17:38
[INFO] [stderr]    |
[INFO] [stderr] 17 | pub fn is_root_changes<T: MarkSweep>(x: &T) {
[INFO] [stderr]    |                                      ^ help: if this is intentional, prefix it with an underscore: `_x`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `x`
[INFO] [stderr]   --> src/lib.rs:21:27
[INFO] [stderr]    |
[INFO] [stderr] 21 | pub fn init<T: MarkSweep>(x: &T) {
[INFO] [stderr]    |                           ^ help: if this is intentional, prefix it with an underscore: `_x`
[INFO] [stderr] 
[INFO] [stderr] warning: static variable `root_set` should have an upper case name
[INFO] [stderr]   --> src/lib.rs:65:16
[INFO] [stderr]    |
[INFO] [stderr] 65 |     static ref root_set: Mutex<HashSet<Element>> = Mutex::new(HashSet::new());
[INFO] [stderr]    |                ^^^^^^^^ help: convert the identifier to upper case: `ROOT_SET`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(non_upper_case_globals)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: static variable `not_root_set` should have an upper case name
[INFO] [stderr]   --> src/lib.rs:66:16
[INFO] [stderr]    |
[INFO] [stderr] 66 |     static ref not_root_set: Mutex<HashSet<Element>> = Mutex::new(HashSet::new());
[INFO] [stderr]    |                ^^^^^^^^^^^^ help: convert the identifier to upper case: `NOT_ROOT_SET`
[INFO] [stderr] 
[INFO] [stderr] warning: 4 warnings emitted
[INFO] [stderr] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.02s
[INFO] [stderr]      Running /opt/rustwide/target/debug/deps/marksweep-17031dbf4b02af81
[INFO] [stderr]    Doc-tests marksweep
[INFO] [stdout] 
[INFO] [stdout] running 0 tests
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] running 0 tests
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
[INFO] [stdout] 
[INFO] running `"docker" "inspect" "20d2eb8fb8e054beaefc55b98ac55ff52e6036c19a0e6ce4c38de614fd1cce89"`
[INFO] running `"docker" "rm" "-f" "20d2eb8fb8e054beaefc55b98ac55ff52e6036c19a0e6ce4c38de614fd1cce89"`
[INFO] [stdout] 20d2eb8fb8e054beaefc55b98ac55ff52e6036c19a0e6ce4c38de614fd1cce89