[INFO] fetching crate evcxr 0.5.1...
[INFO] testing evcxr-0.5.1 against try#03a1ea71b075ab964b5278bc6e74cd6c52c36ee0 for pr-74409
[INFO] extracting crate evcxr 0.5.1 into /workspace/builds/worker-2/source
[INFO] validating manifest of crates.io crate evcxr 0.5.1 on toolchain 03a1ea71b075ab964b5278bc6e74cd6c52c36ee0
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+03a1ea71b075ab964b5278bc6e74cd6c52c36ee0" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking crates.io crate evcxr 0.5.1
[INFO] finished tweaking crates.io crate evcxr 0.5.1
[INFO] tweaked toml for crates.io crate evcxr 0.5.1 written to /workspace/builds/worker-2/source/Cargo.toml
[INFO] crate crates.io crate evcxr 0.5.1 already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+03a1ea71b075ab964b5278bc6e74cd6c52c36ee0" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/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" "+03a1ea71b075ab964b5278bc6e74cd6c52c36ee0" "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] f6755049ae1eb7c1660128fe3cfbac87065f1515cceb5a71653f788cc153e5c0
[INFO] running `Command { std: "docker" "start" "-a" "f6755049ae1eb7c1660128fe3cfbac87065f1515cceb5a71653f788cc153e5c0", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "f6755049ae1eb7c1660128fe3cfbac87065f1515cceb5a71653f788cc153e5c0", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "f6755049ae1eb7c1660128fe3cfbac87065f1515cceb5a71653f788cc153e5c0", kill_on_drop: false }`
[INFO] [stdout] f6755049ae1eb7c1660128fe3cfbac87065f1515cceb5a71653f788cc153e5c0
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/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" "+03a1ea71b075ab964b5278bc6e74cd6c52c36ee0" "build" "--frozen" "--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] 3166465f8da8632b4bc7d130e1f82d4022a2bf25b08c7a2bf0889494da39dd61
[INFO] running `Command { std: "docker" "start" "-a" "3166465f8da8632b4bc7d130e1f82d4022a2bf25b08c7a2bf0889494da39dd61", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.69
[INFO] [stderr]    Compiling cfg-if v0.1.10
[INFO] [stderr]    Compiling cc v1.0.50
[INFO] [stderr]    Compiling getrandom v0.1.14
[INFO] [stderr]    Compiling proc-macro2 v1.0.10
[INFO] [stderr]    Compiling unicode-xid v0.2.0
[INFO] [stderr]    Compiling rustc-demangle v0.1.16
[INFO] [stderr]    Compiling ppv-lite86 v0.2.6
[INFO] [stderr]    Compiling syn v1.0.17
[INFO] [stderr]    Compiling regex-syntax v0.6.17
[INFO] [stderr]    Compiling remove_dir_all v0.5.2
[INFO] [stderr]    Compiling lazy_static v1.4.0
[INFO] [stderr]    Compiling json v0.11.15
[INFO] [stderr]    Compiling quote v1.0.3
[INFO] [stderr]    Compiling dirs-sys v0.3.4
[INFO] [stderr]    Compiling sig v1.0.0
[INFO] [stderr]    Compiling dirs v2.0.2
[INFO] [stderr]    Compiling rand_core v0.5.1
[INFO] [stderr]    Compiling backtrace-sys v0.1.35
[INFO] [stderr]    Compiling libloading v0.5.2
[INFO] [stderr]    Compiling rand_chacha v0.2.2
[INFO] [stderr]    Compiling rand v0.7.3
[INFO] [stderr]    Compiling backtrace v0.3.46
[INFO] [stderr]    Compiling regex v1.3.6
[INFO] [stderr]    Compiling failure v0.1.7
[INFO] [stderr]    Compiling which v2.0.1
[INFO] [stderr]    Compiling tempfile v3.1.0
[INFO] [stderr]    Compiling evcxr v0.5.1 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused return value of `std::mem::replace` that must be used
[INFO] [stdout]   --> src/code_block.rs:90:9
[INFO] [stdout]    |
[INFO] [stdout] 90 |         std::mem::replace(self, block);
[INFO] [stdout]    |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_must_use)]` on by default
[INFO] [stdout]    = note: if you don't need the old value, you can just assign the new value directly
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 40.48s
[INFO] running `Command { std: "docker" "inspect" "3166465f8da8632b4bc7d130e1f82d4022a2bf25b08c7a2bf0889494da39dd61", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "3166465f8da8632b4bc7d130e1f82d4022a2bf25b08c7a2bf0889494da39dd61", kill_on_drop: false }`
[INFO] [stdout] 3166465f8da8632b4bc7d130e1f82d4022a2bf25b08c7a2bf0889494da39dd61
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/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" "+03a1ea71b075ab964b5278bc6e74cd6c52c36ee0" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] bdac4c0c3a813d41e27cd8f3edbb0c690ada87f6c29fdf9a630e973a4f3608cc
[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" "bdac4c0c3a813d41e27cd8f3edbb0c690ada87f6c29fdf9a630e973a4f3608cc", kill_on_drop: false }`
[INFO] [stderr]    Compiling evcxr v0.5.1 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused return value of `std::mem::replace` that must be used
[INFO] [stdout]   --> src/code_block.rs:90:9
[INFO] [stdout]    |
[INFO] [stdout] 90 |         std::mem::replace(self, block);
[INFO] [stdout]    |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_must_use)]` on by default
[INFO] [stdout]    = note: if you don't need the old value, you can just assign the new value directly
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused return value of `std::mem::replace` that must be used
[INFO] [stdout]   --> src/code_block.rs:90:9
[INFO] [stdout]    |
[INFO] [stdout] 90 |         std::mem::replace(self, block);
[INFO] [stdout]    |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_must_use)]` on by default
[INFO] [stdout]    = note: if you don't need the old value, you can just assign the new value directly
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 4.81s
[INFO] running `Command { std: "docker" "inspect" "bdac4c0c3a813d41e27cd8f3edbb0c690ada87f6c29fdf9a630e973a4f3608cc", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "bdac4c0c3a813d41e27cd8f3edbb0c690ada87f6c29fdf9a630e973a4f3608cc", kill_on_drop: false }`
[INFO] [stdout] bdac4c0c3a813d41e27cd8f3edbb0c690ada87f6c29fdf9a630e973a4f3608cc
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/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" "+03a1ea71b075ab964b5278bc6e74cd6c52c36ee0" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] 869d8ec5ad18bdddbb3902a2eda651755c47c1103cb5530c3002c3524f22d6fa
[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" "869d8ec5ad18bdddbb3902a2eda651755c47c1103cb5530c3002c3524f22d6fa", kill_on_drop: false }`
[INFO] [stderr] warning: unused return value of `std::mem::replace` that must be used
[INFO] [stderr]   --> src/code_block.rs:90:9
[INFO] [stderr]    |
[INFO] [stderr] 90 |         std::mem::replace(self, block);
[INFO] [stderr]    |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_must_use)]` on by default
[INFO] [stderr]    = note: if you don't need the old value, you can just assign the new value directly
[INFO] [stderr] 
[INFO] [stderr] warning: 1 warning emitted
[INFO] [stderr] 
[INFO] [stderr] warning: unused return value of `std::mem::replace` that must be used
[INFO] [stderr]   --> src/code_block.rs:90:9
[INFO] [stderr]    |
[INFO] [stderr] 90 |         std::mem::replace(self, block);
[INFO] [stderr]    |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_must_use)]` on by default
[INFO] [stderr]    = note: if you don't need the old value, you can just assign the new value directly
[INFO] [stderr] 
[INFO] [stderr] warning: 1 warning emitted
[INFO] [stderr] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.10s
[INFO] [stderr]      Running /opt/rustwide/target/debug/deps/evcxr-56c772e8225588d2
[INFO] [stdout] 
[INFO] [stdout] running 8 tests
[INFO] [stdout] test code_block::test::basic_usage ... ok
[INFO] [stdout] test crate_config::tests::make_paths_absolute ... ok
[INFO] [stdout] test cargo_metadata::tests::test_library_names_from_metadata ... ok
[INFO] [stdout] test eval_context::tests::test_replace_reserved_words_in_type ... ok
[INFO] [stdout] test statement_splitter::test::multiple_lines ... ok
[INFO] [stdout] test statement_splitter::test::single_line ... ok
[INFO] [stdout] test statement_splitter::test::else_statements ... ok
[INFO] [stdout] test statement_splitter::test::statement_ends_with_brace ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 8 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
[INFO] [stdout] 
[INFO] [stderr]      Running /opt/rustwide/target/debug/deps/testing_runtime-5553e652cc21b4cc
[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 30 tests
[INFO] [stderr]      Running /opt/rustwide/target/debug/deps/integration_tests-c0844e49442c60d0
[INFO] [stdout] test crate_name_with_hyphens ... ignored
[INFO] [stdout] test multiple_identical_use_statements ... ok
[INFO] [stdout] test error_from_macro_expansion ... ok
[INFO] [stdout] test define_then_call_function ... ok
[INFO] [stdout] test non_semi_statements ... ok
[INFO] [stdout] test continue_execution_after_bad_use_statement ... ok
[INFO] [stdout] test crate_deps ... ok
[INFO] [stdout] test non_concrete_types ... ok
[INFO] [stdout] test printing ... ok
[INFO] [stderr] No such file or directory (os error 2)
[INFO] [stdout] test print_then_assign_variable ... ok
[INFO] [stdout] test partial_destructuring ... ok
[INFO] [stdout] test int_array ... ok
[INFO] [stdout] test moved_value ... ok
[INFO] [stdout] test tls_implementing_drop ... ignored
[INFO] [stdout] test reserved_words ... ok
[INFO] [stdout] test format ... ok
[INFO] [stdout] test partially_inferred_variable_type ... ok
[INFO] [stdout] test unnamable_type_impl_trait ... ok
[INFO] [stdout] test unnamable_type_closure ... ok
[INFO] [stdout] test single_statement ... ok
[INFO] [stdout] test abort_and_restart ... ok
[INFO] [stderr] The type of the variable f1 was redefined, so was lost.
[INFO] [stderr] The type of the variable f2 was redefined, so was lost.
[INFO] [stdout] test function_panics_without_variable_preserving ... ok
[INFO] [stdout] test statement_and_expression ... ok
[INFO] [stdout] test variable_assignment_compile_fail_then_use_statement ... ok
[INFO] [stderr] Os { code: 2, kind: NotFound, message: "No such file or directory" }
[INFO] [stdout] test question_mark_operator ... ok
[INFO] [stdout] test redefine_type_with_existing_var ... ok
[INFO] [stdout] test save_and_restore_variables ... ok
[INFO] [stdout] test function_panics_with_variable_preserving ... ok
[INFO] [stdout] test rc_refcell_etc ... ok
[INFO] [stdout] test struct_type_inference ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 28 passed; 0 failed; 2 ignored; 0 measured; 0 filtered out
[INFO] [stdout] 
[INFO] [stderr]    Doc-tests evcxr
[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" "869d8ec5ad18bdddbb3902a2eda651755c47c1103cb5530c3002c3524f22d6fa", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "869d8ec5ad18bdddbb3902a2eda651755c47c1103cb5530c3002c3524f22d6fa", kill_on_drop: false }`
[INFO] [stdout] 869d8ec5ad18bdddbb3902a2eda651755c47c1103cb5530c3002c3524f22d6fa