[INFO] fetching crate rexpr 1.0.7...
[INFO] testing rexpr-1.0.7 against 1.55.0 for beta-1.56-1
[INFO] extracting crate rexpr 1.0.7 into /workspace/builds/worker-0/source
[INFO] validating manifest of crates.io crate rexpr 1.0.7 on toolchain 1.55.0
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.55.0" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate rexpr 1.0.7
[INFO] finished tweaking crates.io crate rexpr 1.0.7
[INFO] tweaked toml for crates.io crate rexpr 1.0.7 written to /workspace/builds/worker-0/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.55.0" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.55.0" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/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" "ghcr.io/rust-lang/crates-build-env/linux@sha256:a89201d6b5b9fd45c15d5952ece0a0129e7e80cb26ec023fd59cf09bc26f1604" "/opt/rustwide/cargo-home/bin/cargo" "+1.55.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 51e268794a8332a65d950e8c2f28f18d60444a45c12237e39b292f7f1b0bd6c3
[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" "51e268794a8332a65d950e8c2f28f18d60444a45c12237e39b292f7f1b0bd6c3", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "51e268794a8332a65d950e8c2f28f18d60444a45c12237e39b292f7f1b0bd6c3", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "51e268794a8332a65d950e8c2f28f18d60444a45c12237e39b292f7f1b0bd6c3", kill_on_drop: false }`
[INFO] [stdout] 51e268794a8332a65d950e8c2f28f18d60444a45c12237e39b292f7f1b0bd6c3
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/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=warn" "-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" "ghcr.io/rust-lang/crates-build-env/linux@sha256:a89201d6b5b9fd45c15d5952ece0a0129e7e80cb26ec023fd59cf09bc26f1604" "/opt/rustwide/cargo-home/bin/cargo" "+1.55.0" "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] d1ffe429ac495d05199213eb4797a83e39b73ef9a3fe210e248038646bf6c912
[INFO] running `Command { std: "docker" "start" "-a" "d1ffe429ac495d05199213eb4797a83e39b73ef9a3fe210e248038646bf6c912", kill_on_drop: false }`
[INFO] [stderr]    Compiling dashmap v4.0.2
[INFO] [stderr]    Compiling serde v1.0.130
[INFO] [stderr]    Compiling serde_json v1.0.67
[INFO] [stderr]    Compiling rexpr v1.0.7 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `crate::cache::RWLockMapCache`
[INFO] [stdout]  --> src/runtime.rs:2:5
[INFO] [stdout]   |
[INFO] [stdout] 2 | use crate::cache::RWLockMapCache;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `#[macro_use]` import
[INFO] [stdout]   --> src/lib.rs:15:1
[INFO] [stdout]    |
[INFO] [stdout] 15 | #[macro_use]
[INFO] [stdout]    | ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `try_read`
[INFO] [stdout]   --> src/cache.rs:12:12
[INFO] [stdout]    |
[INFO] [stdout] 12 |     pub fn try_read(
[INFO] [stdout]    |            ^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `try_write`
[INFO] [stdout]   --> src/cache.rs:17:12
[INFO] [stdout]    |
[INFO] [stdout] 17 |     pub fn try_write(
[INFO] [stdout]    |            ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 4 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 10.44s
[INFO] running `Command { std: "docker" "inspect" "d1ffe429ac495d05199213eb4797a83e39b73ef9a3fe210e248038646bf6c912", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "d1ffe429ac495d05199213eb4797a83e39b73ef9a3fe210e248038646bf6c912", kill_on_drop: false }`
[INFO] [stdout] d1ffe429ac495d05199213eb4797a83e39b73ef9a3fe210e248038646bf6c912
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/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=warn" "-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" "ghcr.io/rust-lang/crates-build-env/linux@sha256:a89201d6b5b9fd45c15d5952ece0a0129e7e80cb26ec023fd59cf09bc26f1604" "/opt/rustwide/cargo-home/bin/cargo" "+1.55.0" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] bcd0ed1b2726fa43532350e50576196c081b9d6c3ad6e3cf2a9d0c394231f9c0
[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" "bcd0ed1b2726fa43532350e50576196c081b9d6c3ad6e3cf2a9d0c394231f9c0", kill_on_drop: false }`
[INFO] [stderr]    Compiling rexpr v1.0.7 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `crate::cache::RWLockMapCache`
[INFO] [stdout]  --> src/runtime.rs:2:5
[INFO] [stdout]   |
[INFO] [stdout] 2 | use crate::cache::RWLockMapCache;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `#[macro_use]` import
[INFO] [stdout]   --> src/lib.rs:15:1
[INFO] [stdout]    |
[INFO] [stdout] 15 | #[macro_use]
[INFO] [stdout]    | ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `try_read`
[INFO] [stdout]   --> src/cache.rs:12:12
[INFO] [stdout]    |
[INFO] [stdout] 12 |     pub fn try_read(
[INFO] [stdout]    |            ^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `try_write`
[INFO] [stdout]   --> src/cache.rs:17:12
[INFO] [stdout]    |
[INFO] [stdout] 17 |     pub fn try_write(
[INFO] [stdout]    |            ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 4 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `crate::cache::RWLockMapCache`
[INFO] [stdout]  --> src/runtime.rs:2:5
[INFO] [stdout]   |
[INFO] [stdout] 2 | use crate::cache::RWLockMapCache;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `try_read`
[INFO] [stdout]   --> src/cache.rs:12:12
[INFO] [stdout]    |
[INFO] [stdout] 12 |     pub fn try_read(
[INFO] [stdout]    |            ^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `try_write`
[INFO] [stdout]   --> src/cache.rs:17:12
[INFO] [stdout]    |
[INFO] [stdout] 17 |     pub fn try_write(
[INFO] [stdout]    |            ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 3 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 3.15s
[INFO] running `Command { std: "docker" "inspect" "bcd0ed1b2726fa43532350e50576196c081b9d6c3ad6e3cf2a9d0c394231f9c0", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "bcd0ed1b2726fa43532350e50576196c081b9d6c3ad6e3cf2a9d0c394231f9c0", kill_on_drop: false }`
[INFO] [stdout] bcd0ed1b2726fa43532350e50576196c081b9d6c3ad6e3cf2a9d0c394231f9c0
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/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=warn" "-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" "ghcr.io/rust-lang/crates-build-env/linux@sha256:a89201d6b5b9fd45c15d5952ece0a0129e7e80cb26ec023fd59cf09bc26f1604" "/opt/rustwide/cargo-home/bin/cargo" "+1.55.0" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] 4076781a557811087532b6fcdc2c39e2d9ee65f49756ae5426c2803a9ffcef0f
[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" "4076781a557811087532b6fcdc2c39e2d9ee65f49756ae5426c2803a9ffcef0f", kill_on_drop: false }`
[INFO] [stderr] warning: unused import: `crate::cache::RWLockMapCache`
[INFO] [stderr]  --> src/runtime.rs:2:5
[INFO] [stderr]   |
[INFO] [stderr] 2 | use crate::cache::RWLockMapCache;
[INFO] [stderr]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused `#[macro_use]` import
[INFO] [stderr]   --> src/lib.rs:15:1
[INFO] [stderr]    |
[INFO] [stderr] 15 | #[macro_use]
[INFO] [stderr]    | ^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: associated function is never used: `try_read`
[INFO] [stderr]   --> src/cache.rs:12:12
[INFO] [stderr]    |
[INFO] [stderr] 12 |     pub fn try_read(
[INFO] [stderr]    |            ^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: associated function is never used: `try_write`
[INFO] [stderr]   --> src/cache.rs:17:12
[INFO] [stderr]    |
[INFO] [stderr] 17 |     pub fn try_write(
[INFO] [stderr]    |            ^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: `rexpr` (lib) generated 4 warnings
[INFO] [stderr] warning: `rexpr` (lib test) generated 3 warnings (3 duplicates)
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.03s
[INFO] [stdout] 
[INFO] [stderr]      Running unittests (/opt/rustwide/target/debug/deps/rexpr-04687259cd357c72)
[INFO] [stdout] running 26 tests
[INFO] [stdout] test error::test_json_error ... ok
[INFO] [stdout] test ast::test::test_parse ... ok
[INFO] [stdout] test eval::test::test_object_eq ... ok
[INFO] [stdout] test eval::test::test_take_value ... ok
[INFO] [stdout] test eval_test::test::test_arg_node ... ok
[INFO] [stdout] test eval::test::test_array_eq ... ok
[INFO] [stdout] test eval_test::test::test_eval_arg ... ok
[INFO] [stdout] test ast::test::test_parse_arg ... ok
[INFO] [stdout] test eval_test::test::test_string_node ... ok
[INFO] [stdout] test eval_test::test::test_number_node ... ok
[INFO] [stdout] test lexer::test::test_fill ... ok
[INFO] [stdout] test parser_test::test::test_lexer ... ok
[INFO] [stdout] test lexer::test::test_fill_center ... ok
[INFO] [stdout] test lexer::test::test_fill_center_n ... ok
[INFO] [stdout] test lexer::test::test_fill_first ... ok
[INFO] [stdout] test eval_test::test::test_gen ... ok
[INFO] [stdout] test lexer::test::test_fill_last ... ok
[INFO] [stdout] test eval::test::test_lexer ... ok
[INFO] [stdout] test eval_test::test::test_node_run ... ok
[INFO] [stdout] test eval_test::test::benchmark_arg_node ... ok
[INFO] [stdout] test parser_test::test::test_benchmark_parse ... ok
[INFO] [stdout] test runtime::test::test_bench ... ok
[INFO] [stdout] test runtime::test::test_thread_race ... ok
[INFO] [stdout] test parser_test::test::test_benchmark ... ok
[INFO] [stdout] test lexer::test::test_bench_lexer ... ok
[INFO] [stdout] test eval_test::test::test_mem_gc has been running for over 60 seconds
[INFO] [stderr]    Doc-tests rexpr
[INFO] [stdout] test eval_test::test::test_mem_gc ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 26 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 99.51s
[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; finished in 0.00s
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "4076781a557811087532b6fcdc2c39e2d9ee65f49756ae5426c2803a9ffcef0f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "4076781a557811087532b6fcdc2c39e2d9ee65f49756ae5426c2803a9ffcef0f", kill_on_drop: false }`
[INFO] [stdout] 4076781a557811087532b6fcdc2c39e2d9ee65f49756ae5426c2803a9ffcef0f