[INFO] fetching crate nibbler 0.2.3...
[INFO] testing nibbler-0.2.3 against beta-2021-01-01 for beta-1.50-1
[INFO] extracting crate nibbler 0.2.3 into /workspace/builds/worker-1/source
[INFO] validating manifest of crates.io crate nibbler 0.2.3 on toolchain beta-2021-01-01
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2021-01-01" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking crates.io crate nibbler 0.2.3
[INFO] finished tweaking crates.io crate nibbler 0.2.3
[INFO] tweaked toml for crates.io crate nibbler 0.2.3 written to /workspace/builds/worker-1/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2021-01-01" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2021-01-01" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/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" "rustops/crates-build-env@sha256:b8eeb62f26c39b23691079a6cb6de528d8e88b4d71a8f6b1d30f8ba7d9c16de9" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2021-01-01" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 03d270a2e1723e43949b5f6d1879acb590ca1603a62113e137311969a874ebcc
[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" "03d270a2e1723e43949b5f6d1879acb590ca1603a62113e137311969a874ebcc", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "03d270a2e1723e43949b5f6d1879acb590ca1603a62113e137311969a874ebcc", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "03d270a2e1723e43949b5f6d1879acb590ca1603a62113e137311969a874ebcc", kill_on_drop: false }`
[INFO] [stdout] 03d270a2e1723e43949b5f6d1879acb590ca1603a62113e137311969a874ebcc
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/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" "rustops/crates-build-env@sha256:b8eeb62f26c39b23691079a6cb6de528d8e88b4d71a8f6b1d30f8ba7d9c16de9" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2021-01-01" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 747fe38af5bd46368b5b1bcd2088ad322db281576c8f3905dcf68019571fe64c
[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" "747fe38af5bd46368b5b1bcd2088ad322db281576c8f3905dcf68019571fe64c", kill_on_drop: false }`
[INFO] [stderr]    Compiling nibbler v0.2.3 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.70s
[INFO] running `Command { std: "docker" "inspect" "747fe38af5bd46368b5b1bcd2088ad322db281576c8f3905dcf68019571fe64c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "747fe38af5bd46368b5b1bcd2088ad322db281576c8f3905dcf68019571fe64c", kill_on_drop: false }`
[INFO] [stdout] 747fe38af5bd46368b5b1bcd2088ad322db281576c8f3905dcf68019571fe64c
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/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" "rustops/crates-build-env@sha256:b8eeb62f26c39b23691079a6cb6de528d8e88b4d71a8f6b1d30f8ba7d9c16de9" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2021-01-01" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] cbd7889da3fe6742ec307683686950a6ad6b5776d141f7a4fa7e3dd76d4cca06
[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" "cbd7889da3fe6742ec307683686950a6ad6b5776d141f7a4fa7e3dd76d4cca06", kill_on_drop: false }`
[INFO] [stderr]    Compiling nibbler v0.2.3 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 1.84s
[INFO] running `Command { std: "docker" "inspect" "cbd7889da3fe6742ec307683686950a6ad6b5776d141f7a4fa7e3dd76d4cca06", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "cbd7889da3fe6742ec307683686950a6ad6b5776d141f7a4fa7e3dd76d4cca06", kill_on_drop: false }`
[INFO] [stdout] cbd7889da3fe6742ec307683686950a6ad6b5776d141f7a4fa7e3dd76d4cca06
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/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" "rustops/crates-build-env@sha256:b8eeb62f26c39b23691079a6cb6de528d8e88b4d71a8f6b1d30f8ba7d9c16de9" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2021-01-01" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] 2baf09e64f9dc1ea766e547276d0175c754bd46795c5ebc34fcbd86bf60641a6
[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" "2baf09e64f9dc1ea766e547276d0175c754bd46795c5ebc34fcbd86bf60641a6", kill_on_drop: false }`
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.01s
[INFO] [stderr]      Running /opt/rustwide/target/debug/deps/nibbler-39613f4bb423b1b9
[INFO] [stdout] 
[INFO] [stdout] running 76 tests
[INFO] [stdout] test nibble::tests::new_nibble_1 ... ok
[INFO] [stdout] test nibble::tests::new_nibble ... ok
[INFO] [stdout] test nibble::tests::new_nibble_2 ... ok
[INFO] [stdout] test nibble::tests::new_nibble_2_neq_1 ... ok
[INFO] [stdout] test nibble::tests::new_nibble_4 ... ok
[INFO] [stdout] test nibble::tests::new_nibble_5 ... ok
[INFO] [stdout] test nibble::tests::new_nibble_8 ... ok
[INFO] [stdout] test nibble::tests::new_nibble_a10 ... ok
[INFO] [stdout] test nibble::tests::nibble_from_i64 ... ok
[INFO] [stdout] test nibble::tests::nibble_from_i32 ... ok
[INFO] [stdout] test nibble::tests::nibble_from_i8 ... ok
[INFO] [stdout] test nibble::tests::nibble_from_i16 ... ok
[INFO] [stdout] test nibble::tests::nibble_be_str ... ok
[INFO] [stdout] test nibble::tests::new_nibble_f15 ... ok
[INFO] [stdout] test nibble::tests::nibble_from_u32 ... ok
[INFO] [stdout] test nibble::tests::nibble_from_u16 ... ok
[INFO] [stdout] test nibble::tests::nibble_from_u64 ... ok
[INFO] [stdout] test nibble::tests::nibble_from_u8 ... ok
[INFO] [stdout] test nibble::tests::nibble_ops_add_assign ... ok
[INFO] [stdout] test nibble::tests::nibble_ops_add ... ok
[INFO] [stdout] test nibble::tests::nibble_ops_div ... ok
[INFO] [stdout] test nibble::tests::nibble_ops_div_assign ... ok
[INFO] [stdout] test nibble::tests::nibble_ops_mul_assign ... ok
[INFO] [stdout] test nibble::tests::nibble_ops_mul ... ok
[INFO] [stdout] test nibble::tests::nibble_le_str ... ok
[INFO] [stdout] test nibble::tests::nibble_ops_shl ... ok
[INFO] [stdout] test nibble::tests::nibble_from_invalid_i32_should_panic ... ok
[INFO] [stdout] test nibble::tests::nibble_ops_shr ... ok
[INFO] [stdout] test nibble::tests::nibble_from_invalid_i64_should_panic ... ok
[INFO] [stdout] test nibble::tests::nibble_ops_sub ... ok
[INFO] [stdout] test nibble::tests::nibble_from_invalid_i16_should_panic ... ok
[INFO] [stdout] test nibble::tests::nibble_ops_sub_assign ... ok
[INFO] [stdout] test nibble::tests::nibble_from_invalid_u32_should_panic ... ok
[INFO] [stdout] test nibble::tests::nibble_to_i16 ... ok
[INFO] [stdout] test nibble::tests::nibble_to_i32 ... ok
[INFO] [stdout] test nibble::tests::nibble_to_i64 ... ok
[INFO] [stdout] test nibble::tests::nibble_to_i8 ... ok
[INFO] [stdout] test nibble::tests::nibble_to_u16 ... ok
[INFO] [stdout] test nibble::tests::nibble_to_u32 ... ok
[INFO] [stdout] test nibble::tests::nibble_from_invalid_u16_should_panic ... ok
[INFO] [stdout] test nibble::tests::nibble_to_u64 ... ok
[INFO] [stdout] test nibble::tests::nibble_to_u8 ... ok
[INFO] [stdout] test nibbles::tests::nibbles_fits_u16 ... ok
[INFO] [stdout] test nibbles::tests::nibbles_from_u16_into_u32 ... ok
[INFO] [stdout] test nibble::tests::nibble_from_invalid_i8_should_panic ... ok
[INFO] [stdout] test nibbles::tests::nibbles_from_u32_into_u64 ... ok
[INFO] [stdout] test nibbles::tests::nibbles_from_u8_into_u16 ... ok
[INFO] [stdout] test nibbles::tests::nibbles_is_bignum ... ok
[INFO] [stdout] test nibbles::tests::nibbles_new_from_bin_str ... ok
[INFO] [stdout] test nibble::tests::nibble_from_invalid_u64_should_panic ... ok
[INFO] [stdout] test nibbles::tests::nibbles_new_from_nib_vec_raw ... ok
[INFO] [stdout] test nibbles::tests::nibbles_new_from_self ... ok
[INFO] [stdout] test nibble::tests::nibble_from_invalid_u8_should_panic ... ok
[INFO] [stdout] test nibbles::tests::nibbles_new_from_u32 ... ok
[INFO] [stdout] test nibbles::tests::nibbles_new_from_u64 ... ok
[INFO] [stdout] test nibble::tests::nibble_ops_add_assign_overflow_panic ... ok
[INFO] [stdout] test nibbles::tests::nibbles_shrink ... ok
[INFO] [stdout] test nibbles::tests::nibbles_new_from_u16 ... ok
[INFO] [stdout] test nibbles::tests::nibbles_to_bin_str ... ok
[INFO] [stdout] test nibbles::tests::nibbles_new_from_u8 ... ok
[INFO] [stdout] test nibbles::tests::nibbles_new ... ok
[INFO] [stdout] test nibbles::tests::nibbles_new_with_capacity_push_pop_get_set_remove ... ok
[INFO] [stdout] test nibbles::tests::nibbles_to_hex_str ... ok
[INFO] [stdout] test nibble::tests::nibble_ops_add_overflow_panic ... ok
[INFO] [stdout] test nibble::tests::nibble_ops_div0_panic ... ok
[INFO] [stdout] test nibble::tests::nibble_ops_mul_assign_overflow_panic ... ok
[INFO] [stdout] test nibble::tests::nibble_ops_div0_assign_panic ... ok
[INFO] [stdout] test nibble::tests::nibble_ops_mul_overflow_panic ... ok
[INFO] [stdout] test nibble::tests::nibble_ops_neg ... ok
[INFO] [stdout] test nibble::tests::nibble_ops_shl_overflow_panic ... ok
[INFO] [stdout] test nibble::tests::nibble_ops_shr_overflow_panic ... ok
[INFO] [stdout] test nibble::tests::nibble_ops_sub_assign_overflow_panic ... ok
[INFO] [stdout] test nibble::tests::nibble_ops_sub_overflow_panic ... ok
[INFO] [stdout] test nibbles::tests::nibbles_u32_into_u16_should_panic ... ok
[INFO] [stdout] test nibbles::tests::nibbles_u16_into_u8_should_panic ... ok
[INFO] [stdout] test nibbles::tests::nibbles_u64_into_u32_should_panic ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 76 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.03s
[INFO] [stdout] 
[INFO] [stderr]    Doc-tests nibbler
[INFO] [stdout] 
[INFO] [stdout] running 28 tests
[INFO] [stdout] test src/nibble.rs - nibble::Nibble::new (line 40) ... ok
[INFO] [stdout] test src/nibbles.rs - nibbles::Nibbles::fits_u64 (line 458) ... ok
[INFO] [stdout] test src/nibbles.rs - nibbles::Nibbles::is_bignum (line 505) ... ok
[INFO] [stdout] test src/nibbles.rs - nibbles::Nibbles::fits_u8 (line 361) ... ok
[INFO] [stdout] test src/nibble.rs - nibble::Nibble::new (line 82) ... ok
[INFO] [stdout] test src/nibbles.rs - nibbles::Nibbles::editable (line 546) ... ok
[INFO] [stdout] test src/nibble.rs - nibble::Nibble::not (line 663) ... ok
[INFO] [stdout] test src/nibbles.rs - nibbles::Nibbles::get (line 585) ... ok
[INFO] [stdout] test src/nibbles.rs - nibbles::Nibbles::new_from_bin_str (line 211) ... ok
[INFO] [stdout] test src/nibbles.rs - nibbles::Nibbles::new (line 23) ... ok
[INFO] [stdout] test src/nibbles.rs - nibbles::Nibbles::fits_u16 (line 387) ... ok
[INFO] [stdout] test src/nibbles.rs - nibbles::Nibbles::len (line 310) ... ok
[INFO] [stdout] test src/nibbles.rs - nibbles::Nibbles::capacity (line 325) ... ok
[INFO] [stdout] test src/nibbles.rs - nibbles::Nibbles::editable (line 569) ... ok
[INFO] [stdout] test src/nibbles.rs - nibbles::Nibbles::fits_u32 (line 419) ... ok
[INFO] [stdout] test src/nibbles.rs - nibbles::Nibbles::new_from_hex_str (line 135) ... ok
[INFO] [stdout] test src/nibbles.rs - nibbles::Nibbles::new_from_nib_vec (line 39) ... ok
[INFO] [stdout] test src/nibbles.rs - nibbles::Nibbles::remove (line 674) ... ok
[INFO] [stdout] test src/nibbles.rs - nibbles::Nibbles::to_hex_str (line 184) ... ok
[INFO] [stdout] test src/nibbles.rs - nibbles::Nibbles::pop (line 653) ... ok
[INFO] [stdout] test src/nibbles.rs - nibbles::Nibbles::new_from_self (line 68) ... ok
[INFO] [stdout] test src/nibbles.rs - nibbles::Nibbles::set (line 601) ... ok
[INFO] [stdout] test src/nibbles.rs - nibbles::Nibbles::with_capacity (line 97) ... ok
[INFO] [stdout] test src/nibbles.rs - nibbles::Nibbles::shrink (line 697) ... ok
[INFO] [stdout] test src/nibbles.rs - nibbles::Nibbles::push (line 624) ... ok
[INFO] [stdout] test src/nibbles.rs - nibbles::Nibbles::raw_vec (line 528) ... ok
[INFO] [stdout] test src/nibbles.rs - nibbles::Nibbles::set_static (line 291) ... ok
[INFO] [stdout] test src/nibbles.rs - nibbles::Nibbles::to_bin_str (line 267) ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 28 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 5.15s
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "2baf09e64f9dc1ea766e547276d0175c754bd46795c5ebc34fcbd86bf60641a6", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "2baf09e64f9dc1ea766e547276d0175c754bd46795c5ebc34fcbd86bf60641a6", kill_on_drop: false }`
[INFO] [stdout] 2baf09e64f9dc1ea766e547276d0175c754bd46795c5ebc34fcbd86bf60641a6