[INFO] fetching crate nibbler 0.2.3...
[INFO] testing nibbler-0.2.3 against 1.49.0 for beta-1.50-1
[INFO] extracting crate nibbler 0.2.3 into /workspace/builds/worker-12/source
[INFO] validating manifest of crates.io crate nibbler 0.2.3 on toolchain 1.49.0
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.49.0" "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-12/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.49.0" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.49.0" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/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" "+1.49.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 29d3de43ac8bd40cc94a4b826f07754af4df3a239eabe9b64d678875b07896b5
[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" "29d3de43ac8bd40cc94a4b826f07754af4df3a239eabe9b64d678875b07896b5", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "29d3de43ac8bd40cc94a4b826f07754af4df3a239eabe9b64d678875b07896b5", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "29d3de43ac8bd40cc94a4b826f07754af4df3a239eabe9b64d678875b07896b5", kill_on_drop: false }`
[INFO] [stdout] 29d3de43ac8bd40cc94a4b826f07754af4df3a239eabe9b64d678875b07896b5
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/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" "+1.49.0" "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] bf6d0ef6ebc4180f95e11e736c129a81c2a600264523c94b2cad887a76c5b5ef
[INFO] running `Command { std: "docker" "start" "-a" "bf6d0ef6ebc4180f95e11e736c129a81c2a600264523c94b2cad887a76c5b5ef", kill_on_drop: false }`
[INFO] [stderr]    Compiling nibbler v0.2.3 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.97s
[INFO] running `Command { std: "docker" "inspect" "bf6d0ef6ebc4180f95e11e736c129a81c2a600264523c94b2cad887a76c5b5ef", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "bf6d0ef6ebc4180f95e11e736c129a81c2a600264523c94b2cad887a76c5b5ef", kill_on_drop: false }`
[INFO] [stdout] bf6d0ef6ebc4180f95e11e736c129a81c2a600264523c94b2cad887a76c5b5ef
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/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" "+1.49.0" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] b3cfa151b0d43c35a6fcce5e5fb2f2ba98d0a538acde5be3189a27108547109e
[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" "b3cfa151b0d43c35a6fcce5e5fb2f2ba98d0a538acde5be3189a27108547109e", kill_on_drop: false }`
[INFO] [stderr]    Compiling nibbler v0.2.3 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 1.56s
[INFO] running `Command { std: "docker" "inspect" "b3cfa151b0d43c35a6fcce5e5fb2f2ba98d0a538acde5be3189a27108547109e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "b3cfa151b0d43c35a6fcce5e5fb2f2ba98d0a538acde5be3189a27108547109e", kill_on_drop: false }`
[INFO] [stdout] b3cfa151b0d43c35a6fcce5e5fb2f2ba98d0a538acde5be3189a27108547109e
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/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" "+1.49.0" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] 1dc72acfea4d9754406f083fb94604813447f455561c97e50ced6bc20cf2e0fa
[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" "1dc72acfea4d9754406f083fb94604813447f455561c97e50ced6bc20cf2e0fa", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stdout] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.17s
[INFO] [stdout] running 76 tests
[INFO] [stderr]      Running /opt/rustwide/target/debug/deps/nibbler-9c89562cc09ed1ed
[INFO] [stdout] test nibble::tests::new_nibble ... ok
[INFO] [stdout] test nibble::tests::new_nibble_1 ... ok
[INFO] [stdout] test nibble::tests::new_nibble_2_neq_1 ... ok
[INFO] [stdout] test nibble::tests::new_nibble_2 ... ok
[INFO] [stdout] test nibble::tests::new_nibble_8 ... ok
[INFO] [stdout] test nibble::tests::new_nibble_a10 ... ok
[INFO] [stdout] test nibble::tests::new_nibble_5 ... ok
[INFO] [stdout] test nibble::tests::new_nibble_4 ... ok
[INFO] [stdout] test nibble::tests::nibble_from_i32 ... ok
[INFO] [stdout] test nibble::tests::nibble_from_i64 ... 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_i8 ... ok
[INFO] [stdout] test nibble::tests::nibble_from_u16 ... 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_add_assign ... ok
[INFO] [stdout] test nibble::tests::nibble_le_str ... ok
[INFO] [stdout] test nibble::tests::nibble_from_u32 ... ok
[INFO] [stdout] test nibble::tests::nibble_from_u8 ... ok
[INFO] [stdout] test nibble::tests::nibble_from_u64 ... ok
[INFO] [stdout] test nibble::tests::nibble_ops_div_assign ... ok
[INFO] [stdout] test nibble::tests::nibble_ops_mul ... ok
[INFO] [stdout] test nibble::tests::nibble_ops_mul_assign ... ok
[INFO] [stdout] test nibble::tests::nibble_ops_shl ... ok
[INFO] [stdout] test nibble::tests::nibble_from_invalid_i16_should_panic ... ok
[INFO] [stdout] test nibble::tests::nibble_from_invalid_i8_should_panic ... ok
[INFO] [stdout] test nibble::tests::nibble_from_invalid_i64_should_panic ... ok
[INFO] [stdout] test nibble::tests::nibble_from_invalid_u32_should_panic ... ok
[INFO] [stdout] test nibble::tests::nibble_from_invalid_u64_should_panic ... ok
[INFO] [stdout] test nibble::tests::nibble_ops_sub_assign ... ok
[INFO] [stdout] test nibble::tests::nibble_ops_sub ... ok
[INFO] [stdout] test nibble::tests::nibble_from_invalid_i32_should_panic ... ok
[INFO] [stdout] test nibble::tests::nibble_from_invalid_u16_should_panic ... ok
[INFO] [stdout] test nibble::tests::nibble_from_invalid_u8_should_panic ... ok
[INFO] [stdout] test nibble::tests::nibble_ops_div0_assign_panic ... ok
[INFO] [stdout] test nibble::tests::nibble_ops_add_assign_overflow_panic ... ok
[INFO] [stdout] test nibble::tests::nibble_to_u32 ... 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 nibble::tests::nibble_ops_div0_panic ... ok
[INFO] [stdout] test nibble::tests::nibble_ops_shr ... ok
[INFO] [stdout] test nibbles::tests::nibbles_from_u32_into_u64 ... ok
[INFO] [stdout] test nibbles::tests::nibbles_from_u16_into_u32 ... ok
[INFO] [stdout] test nibble::tests::nibble_to_u16 ... ok
[INFO] [stdout] test nibbles::tests::nibbles_from_u8_into_u16 ... ok
[INFO] [stdout] test nibbles::tests::nibbles_new_from_bin_str ... ok
[INFO] [stdout] test nibbles::tests::nibbles_is_bignum ... ok
[INFO] [stdout] test nibbles::tests::nibbles_new ... ok
[INFO] [stdout] test nibbles::tests::nibbles_new_from_u32 ... ok
[INFO] [stdout] test nibbles::tests::nibbles_new_from_u16 ... ok
[INFO] [stdout] test nibbles::tests::nibbles_new_from_u8 ... ok
[INFO] [stdout] test nibbles::tests::nibbles_new_with_capacity_push_pop_get_set_remove ... ok
[INFO] [stdout] test nibbles::tests::nibbles_shrink ... ok
[INFO] [stdout] test nibbles::tests::nibbles_to_bin_str ... ok
[INFO] [stdout] test nibbles::tests::nibbles_to_hex_str ... ok
[INFO] [stdout] test nibbles::tests::nibbles_new_from_u64 ... ok
[INFO] [stdout] test nibbles::tests::nibbles_u16_into_u8_should_panic ... ok
[INFO] [stdout] test nibble::tests::nibble_to_i64 ... ok
[INFO] [stdout] test nibbles::tests::nibbles_new_from_nib_vec_raw ... ok
[INFO] [stdout] test nibble::tests::nibble_to_i32 ... ok
[INFO] [stdout] test nibble::tests::nibble_to_i16 ... ok
[INFO] [stdout] test nibble::tests::nibble_to_i8 ... ok
[INFO] [stderr]    Doc-tests nibbler
[INFO] [stdout] test nibbles::tests::nibbles_new_from_self ... ok
[INFO] [stdout] test nibble::tests::nibble_ops_add_overflow_panic ... ok
[INFO] [stdout] test nibble::tests::nibble_ops_neg ... ok
[INFO] [stdout] test nibble::tests::nibble_ops_mul_assign_overflow_panic ... 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_mul_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_u64_into_u32_should_panic ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 76 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] running 28 tests
[INFO] [stdout] test src/nibble.rs - nibble::Nibble::not (line 663) ... ok
[INFO] [stdout] test src/nibble.rs - nibble::Nibble::new (line 40) ... ok
[INFO] [stdout] test src/nibbles.rs - nibbles::Nibbles::fits_u32 (line 419) ... ok
[INFO] [stdout] test src/nibbles.rs - nibbles::Nibbles::editable (line 546) ... ok
[INFO] [stdout] test src/nibbles.rs - nibbles::Nibbles::new_from_bin_str (line 211) ... ok
[INFO] [stdout] test src/nibbles.rs - nibbles::Nibbles::get (line 585) ... 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::fits_u64 (line 458) ... ok
[INFO] [stdout] test src/nibbles.rs - nibbles::Nibbles::new (line 23) ... ok
[INFO] [stdout] test src/nibbles.rs - nibbles::Nibbles::is_bignum (line 505) ... ok
[INFO] [stdout] test src/nibbles.rs - nibbles::Nibbles::editable (line 569) ... ok
[INFO] [stdout] test src/nibbles.rs - nibbles::Nibbles::capacity (line 325) ... 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::new_from_hex_str (line 135) ... ok
[INFO] [stdout] test src/nibbles.rs - nibbles::Nibbles::remove (line 674) ... ok
[INFO] [stdout] test src/nibbles.rs - nibbles::Nibbles::to_bin_str (line 267) ... ok
[INFO] [stdout] test src/nibbles.rs - nibbles::Nibbles::raw_vec (line 528) ... ok
[INFO] [stdout] test src/nibbles.rs - nibbles::Nibbles::with_capacity (line 97) ... 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::shrink (line 697) ... ok
[INFO] [stdout] test src/nibbles.rs - nibbles::Nibbles::set (line 601) ... ok
[INFO] [stdout] test src/nibbles.rs - nibbles::Nibbles::set_static (line 291) ... ok
[INFO] [stdout] test src/nibbles.rs - nibbles::Nibbles::push (line 624) ... ok
[INFO] [stdout] test src/nibbles.rs - nibbles::Nibbles::to_hex_str (line 184) ... ok
[INFO] [stdout] test src/nibbles.rs - nibbles::Nibbles::new_from_nib_vec (line 39) ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 28 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "1dc72acfea4d9754406f083fb94604813447f455561c97e50ced6bc20cf2e0fa", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "1dc72acfea4d9754406f083fb94604813447f455561c97e50ced6bc20cf2e0fa", kill_on_drop: false }`
[INFO] [stdout] 1dc72acfea4d9754406f083fb94604813447f455561c97e50ced6bc20cf2e0fa