[INFO] crate assertx 0.1.2 is already in cache
[INFO] testing assertx-0.1.2 against beta-2020-06-03 for beta-1.45-1
[INFO] extracting crate assertx 0.1.2 into /workspace/builds/worker-10/source
[INFO] validating manifest of crates.io crate assertx 0.1.2 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 assertx 0.1.2
[INFO] finished tweaking crates.io crate assertx 0.1.2
[INFO] tweaked toml for crates.io crate assertx 0.1.2 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] [stderr]     Blocking waiting for file lock on package cache
[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] ee47b4fc3c5df832df5c8b238ef08239d9eda89d771d21f7462e544a60fe1f1f
[INFO] running `"docker" "start" "-a" "ee47b4fc3c5df832df5c8b238ef08239d9eda89d771d21f7462e544a60fe1f1f"`
[INFO] [stderr] sudo: setrlimit(RLIMIT_CORE): Operation not permitted
[INFO] [stderr]    Compiling assertx v0.1.2 (/opt/rustwide/workdir)
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]  --> src/collections.rs:6:9
[INFO] [stderr]   |
[INFO] [stderr] 6 |     let mut actual_iterator = &mut actual.clone().into_iter();
[INFO] [stderr]   |         ----^^^^^^^^^^^^^^^
[INFO] [stderr]   |         |
[INFO] [stderr]   |         help: remove this `mut`
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(unused_mut)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]  --> src/collections.rs:7:9
[INFO] [stderr]   |
[INFO] [stderr] 7 |     let mut expected_iterator = &mut expected.clone().into_iter();
[INFO] [stderr]   |         ----^^^^^^^^^^^^^^^^^
[INFO] [stderr]   |         |
[INFO] [stderr]   |         help: remove this `mut`
[INFO] [stderr] 
[INFO] [stderr] warning: 2 warnings emitted
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.23s
[INFO] running `"docker" "inspect" "ee47b4fc3c5df832df5c8b238ef08239d9eda89d771d21f7462e544a60fe1f1f"`
[INFO] running `"docker" "rm" "-f" "ee47b4fc3c5df832df5c8b238ef08239d9eda89d771d21f7462e544a60fe1f1f"`
[INFO] [stdout] ee47b4fc3c5df832df5c8b238ef08239d9eda89d771d21f7462e544a60fe1f1f
[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] 6805f9c2a91638465762a87b9a6b77685608818bcbb4c2609e174af1aa5bdde6
[INFO] running `"docker" "start" "-a" "6805f9c2a91638465762a87b9a6b77685608818bcbb4c2609e174af1aa5bdde6"`
[INFO] [stderr] sudo: setrlimit(RLIMIT_CORE): Operation not permitted
[INFO] [stderr]    Compiling assertx v0.1.2 (/opt/rustwide/workdir)
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]  --> src/collections.rs:6:9
[INFO] [stderr]   |
[INFO] [stderr] 6 |     let mut actual_iterator = &mut actual.clone().into_iter();
[INFO] [stderr]   |         ----^^^^^^^^^^^^^^^
[INFO] [stderr]   |         |
[INFO] [stderr]   |         help: remove this `mut`
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(unused_mut)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]  --> src/collections.rs:7:9
[INFO] [stderr]   |
[INFO] [stderr] 7 |     let mut expected_iterator = &mut expected.clone().into_iter();
[INFO] [stderr]   |         ----^^^^^^^^^^^^^^^^^
[INFO] [stderr]   |         |
[INFO] [stderr]   |         help: remove this `mut`
[INFO] [stderr] 
[INFO] [stderr] warning: 2 warnings emitted
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]  --> src/collections.rs:6:9
[INFO] [stderr]   |
[INFO] [stderr] 6 |     let mut actual_iterator = &mut actual.clone().into_iter();
[INFO] [stderr]   |         ----^^^^^^^^^^^^^^^
[INFO] [stderr]   |         |
[INFO] [stderr]   |         help: remove this `mut`
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(unused_mut)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]  --> src/collections.rs:7:9
[INFO] [stderr]   |
[INFO] [stderr] 7 |     let mut expected_iterator = &mut expected.clone().into_iter();
[INFO] [stderr]   |         ----^^^^^^^^^^^^^^^^^
[INFO] [stderr]   |         |
[INFO] [stderr]   |         help: remove this `mut`
[INFO] [stderr] 
[INFO] [stderr] warning: 2 warnings emitted
[INFO] [stderr] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 1.27s
[INFO] running `"docker" "inspect" "6805f9c2a91638465762a87b9a6b77685608818bcbb4c2609e174af1aa5bdde6"`
[INFO] running `"docker" "rm" "-f" "6805f9c2a91638465762a87b9a6b77685608818bcbb4c2609e174af1aa5bdde6"`
[INFO] [stdout] 6805f9c2a91638465762a87b9a6b77685608818bcbb4c2609e174af1aa5bdde6
[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] 20087f171f35bb5bc854499a0dfb1f2c24fdcd019849b56e9c2071a3900759d7
[INFO] running `"docker" "start" "-a" "20087f171f35bb5bc854499a0dfb1f2c24fdcd019849b56e9c2071a3900759d7"`
[INFO] [stderr] sudo: setrlimit(RLIMIT_CORE): Operation not permitted
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]  --> src/collections.rs:6:9
[INFO] [stderr]   |
[INFO] [stderr] 6 |     let mut actual_iterator = &mut actual.clone().into_iter();
[INFO] [stderr]   |         ----^^^^^^^^^^^^^^^
[INFO] [stderr]   |         |
[INFO] [stderr]   |         help: remove this `mut`
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(unused_mut)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]  --> src/collections.rs:7:9
[INFO] [stderr]   |
[INFO] [stderr] 7 |     let mut expected_iterator = &mut expected.clone().into_iter();
[INFO] [stderr]   |         ----^^^^^^^^^^^^^^^^^
[INFO] [stderr]   |         |
[INFO] [stderr]   |         help: remove this `mut`
[INFO] [stderr] 
[INFO] [stderr] warning: 2 warnings emitted
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]  --> src/collections.rs:6:9
[INFO] [stderr]   |
[INFO] [stderr] 6 |     let mut actual_iterator = &mut actual.clone().into_iter();
[INFO] [stderr]   |         ----^^^^^^^^^^^^^^^
[INFO] [stderr]   |         |
[INFO] [stderr]   |         help: remove this `mut`
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(unused_mut)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]  --> src/collections.rs:7:9
[INFO] [stderr]   |
[INFO] [stderr] 7 |     let mut expected_iterator = &mut expected.clone().into_iter();
[INFO] [stderr]   |         ----^^^^^^^^^^^^^^^^^
[INFO] [stderr]   |         |
[INFO] [stderr]   |         help: remove this `mut`
[INFO] [stderr] 
[INFO] [stderr] warning: 2 warnings emitted
[INFO] [stderr] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.04s
[INFO] [stderr]      Running /opt/rustwide/target/debug/deps/assertx-05cac5e53fb0c90a
[INFO] [stdout] 
[INFO] [stdout] running 7 tests
[INFO] [stdout] test collections::tests::should_succeed_if_both_sides_empty ... ok
[INFO] [stdout] test collections::tests::should_succeed_if_same_elements_in_same_order ... ok
[INFO] [stdout] test variants::tests::should_not_panic_if_same_variant ... ok
[INFO] [stdout] test collections::tests::should_fail_if_different_number_of_elements ... ok
[INFO] [stdout] test collections::tests::should_fail_if_same_elements_but_different_order ... ok
[INFO] [stdout] test collections::tests::should_fail_if_elements_are_not_the_same ... ok
[INFO] [stdout] test variants::tests::should_panic_if_not_same_variant ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 7 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
[INFO] [stdout] 
[INFO] [stderr]    Doc-tests assertx
[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" "20087f171f35bb5bc854499a0dfb1f2c24fdcd019849b56e9c2071a3900759d7"`
[INFO] running `"docker" "rm" "-f" "20087f171f35bb5bc854499a0dfb1f2c24fdcd019849b56e9c2071a3900759d7"`
[INFO] [stdout] 20087f171f35bb5bc854499a0dfb1f2c24fdcd019849b56e9c2071a3900759d7