[INFO] crate assertx 0.1.2 is already in cache
[INFO] testing assertx-0.1.2 against master#8534be72fc3b9c5f2f2dc4e4ee7b651a008e9a3e for pr-74409
[INFO] extracting crate assertx 0.1.2 into /workspace/builds/worker-13/source
[INFO] validating manifest of crates.io crate assertx 0.1.2 on toolchain 8534be72fc3b9c5f2f2dc4e4ee7b651a008e9a3e
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+8534be72fc3b9c5f2f2dc4e4ee7b651a008e9a3e" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[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-13/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+8534be72fc3b9c5f2f2dc4e4ee7b651a008e9a3e" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+8534be72fc3b9c5f2f2dc4e4ee7b651a008e9a3e" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-13/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-13/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_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--network" "none" "rustops/crates-build-env@sha256:38e1b949b06cde1964af550a6e548bd9b2b2ea170003ae122f8fc0886596cc07" "/opt/rustwide/cargo-home/bin/cargo" "+8534be72fc3b9c5f2f2dc4e4ee7b651a008e9a3e" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 62f64048181ca4da1c1d40050e5eae8068e335b9de075ceadc6ea87c18dff721
[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" "62f64048181ca4da1c1d40050e5eae8068e335b9de075ceadc6ea87c18dff721", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "62f64048181ca4da1c1d40050e5eae8068e335b9de075ceadc6ea87c18dff721", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "62f64048181ca4da1c1d40050e5eae8068e335b9de075ceadc6ea87c18dff721", kill_on_drop: false }`
[INFO] [stdout] 62f64048181ca4da1c1d40050e5eae8068e335b9de075ceadc6ea87c18dff721
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-13/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-13/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=forbid" "-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@sha256:38e1b949b06cde1964af550a6e548bd9b2b2ea170003ae122f8fc0886596cc07" "/opt/rustwide/cargo-home/bin/cargo" "+8534be72fc3b9c5f2f2dc4e4ee7b651a008e9a3e" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] f54e5869cddee69b239ea30d3df4cea68c4f2c36fe4160f6d7244fda737c4334
[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" "f54e5869cddee69b239ea30d3df4cea68c4f2c36fe4160f6d7244fda737c4334", kill_on_drop: false }`
[INFO] [stderr]    Compiling assertx v0.1.2 (/opt/rustwide/workdir)
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]  --> src/collections.rs:6:9
[INFO] [stdout]   |
[INFO] [stdout] 6 |     let mut actual_iterator = &mut actual.clone().into_iter();
[INFO] [stdout]   |         ----^^^^^^^^^^^^^^^
[INFO] [stdout]   |         |
[INFO] [stdout]   |         help: remove this `mut`
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_mut)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]  --> src/collections.rs:7:9
[INFO] [stdout]   |
[INFO] [stdout] 7 |     let mut expected_iterator = &mut expected.clone().into_iter();
[INFO] [stdout]   |         ----^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |         |
[INFO] [stdout]   |         help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.17s
[INFO] running `Command { std: "docker" "inspect" "f54e5869cddee69b239ea30d3df4cea68c4f2c36fe4160f6d7244fda737c4334", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "f54e5869cddee69b239ea30d3df4cea68c4f2c36fe4160f6d7244fda737c4334", kill_on_drop: false }`
[INFO] [stdout] f54e5869cddee69b239ea30d3df4cea68c4f2c36fe4160f6d7244fda737c4334
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-13/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-13/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=forbid" "-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@sha256:38e1b949b06cde1964af550a6e548bd9b2b2ea170003ae122f8fc0886596cc07" "/opt/rustwide/cargo-home/bin/cargo" "+8534be72fc3b9c5f2f2dc4e4ee7b651a008e9a3e" "test" "--frozen" "--no-run" "--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] 389743ed5dde092857fa7cff52977301ebd11e2fd5e0df0217d9e8d07e306e44
[INFO] running `Command { std: "docker" "start" "-a" "389743ed5dde092857fa7cff52977301ebd11e2fd5e0df0217d9e8d07e306e44", kill_on_drop: false }`
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]  --> src/collections.rs:6:9
[INFO] [stdout]   |
[INFO] [stdout] 6 |     let mut actual_iterator = &mut actual.clone().into_iter();
[INFO] [stdout]   |         ----^^^^^^^^^^^^^^^
[INFO] [stdout]   |         |
[INFO] [stdout]   |         help: remove this `mut`
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_mut)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]  --> src/collections.rs:7:9
[INFO] [stdout]   |
[INFO] [stdout] 7 |     let mut expected_iterator = &mut expected.clone().into_iter();
[INFO] [stdout]   |         ----^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |         |
[INFO] [stdout]   |         help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]    Compiling assertx v0.1.2 (/opt/rustwide/workdir)
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]  --> src/collections.rs:6:9
[INFO] [stdout]   |
[INFO] [stdout] 6 |     let mut actual_iterator = &mut actual.clone().into_iter();
[INFO] [stdout]   |         ----^^^^^^^^^^^^^^^
[INFO] [stdout]   |         |
[INFO] [stdout]   |         help: remove this `mut`
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_mut)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]  --> src/collections.rs:7:9
[INFO] [stdout]   |
[INFO] [stdout] 7 |     let mut expected_iterator = &mut expected.clone().into_iter();
[INFO] [stdout]   |         ----^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |         |
[INFO] [stdout]   |         help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 1.15s
[INFO] running `Command { std: "docker" "inspect" "389743ed5dde092857fa7cff52977301ebd11e2fd5e0df0217d9e8d07e306e44", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "389743ed5dde092857fa7cff52977301ebd11e2fd5e0df0217d9e8d07e306e44", kill_on_drop: false }`
[INFO] [stdout] 389743ed5dde092857fa7cff52977301ebd11e2fd5e0df0217d9e8d07e306e44
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-13/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-13/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=forbid" "-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@sha256:38e1b949b06cde1964af550a6e548bd9b2b2ea170003ae122f8fc0886596cc07" "/opt/rustwide/cargo-home/bin/cargo" "+8534be72fc3b9c5f2f2dc4e4ee7b651a008e9a3e" "test" "--frozen", 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] 9bd37bfc07e6fb7e829c309e3b5f7d2cf79037b36f1144bbfa33a17210b66916
[INFO] running `Command { std: "docker" "start" "-a" "9bd37bfc07e6fb7e829c309e3b5f7d2cf79037b36f1144bbfa33a17210b66916", kill_on_drop: false }`
[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 0.01s
[INFO] [stderr]      Running /opt/rustwide/target/debug/deps/assertx-22f0f99497aac73e
[INFO] [stdout] 
[INFO] [stdout] running 7 tests
[INFO] [stdout] test variants::tests::should_not_panic_if_same_variant ... ok
[INFO] [stdout] test collections::tests::should_succeed_if_same_elements_in_same_order ... ok
[INFO] [stdout] test collections::tests::should_succeed_if_both_sides_empty ... ok
[INFO] [stdout] test collections::tests::should_fail_if_different_number_of_elements ... 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] test collections::tests::should_fail_if_same_elements_but_different_order ... 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 `Command { std: "docker" "inspect" "9bd37bfc07e6fb7e829c309e3b5f7d2cf79037b36f1144bbfa33a17210b66916", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "9bd37bfc07e6fb7e829c309e3b5f7d2cf79037b36f1144bbfa33a17210b66916", kill_on_drop: false }`
[INFO] [stdout] 9bd37bfc07e6fb7e829c309e3b5f7d2cf79037b36f1144bbfa33a17210b66916