[INFO] cloning repository https://github.com/icostin/halfbit
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/icostin/halfbit" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Ficostin%2Fhalfbit", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Ficostin%2Fhalfbit'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 3322535dcd432e9ebcd0281d3b4511ecf227c643
[INFO] testing icostin/halfbit against try#eafdee2dfae8c2233b74f98b123308be7ccefcc6 for pr-79296
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Ficostin%2Fhalfbit" "/workspace/builds/worker-6/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-6/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/icostin/halfbit on toolchain eafdee2dfae8c2233b74f98b123308be7ccefcc6
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+eafdee2dfae8c2233b74f98b123308be7ccefcc6" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/icostin/halfbit
[INFO] removed 0 missing examples
[INFO] finished tweaking git repo https://github.com/icostin/halfbit
[INFO] tweaked toml for git repo https://github.com/icostin/halfbit written to /workspace/builds/worker-6/source/Cargo.toml
[INFO] crate git repo https://github.com/icostin/halfbit already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+eafdee2dfae8c2233b74f98b123308be7ccefcc6" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/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@sha256:6eabd152ff4036248d66efda456a36cb33d24b7291b33f25f75140726c88da35" "/opt/rustwide/cargo-home/bin/cargo" "+eafdee2dfae8c2233b74f98b123308be7ccefcc6" "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] d6e714fcee72a48873828ef8bfabe6575600718d79db10c35371768e364dbce3
[INFO] running `Command { std: "docker" "start" "-a" "d6e714fcee72a48873828ef8bfabe6575600718d79db10c35371768e364dbce3", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "d6e714fcee72a48873828ef8bfabe6575600718d79db10c35371768e364dbce3", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "d6e714fcee72a48873828ef8bfabe6575600718d79db10c35371768e364dbce3", kill_on_drop: false }`
[INFO] [stdout] d6e714fcee72a48873828ef8bfabe6575600718d79db10c35371768e364dbce3
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/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=forbid" "-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@sha256:6eabd152ff4036248d66efda456a36cb33d24b7291b33f25f75140726c88da35" "/opt/rustwide/cargo-home/bin/cargo" "+eafdee2dfae8c2233b74f98b123308be7ccefcc6" "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] 2f2a99a0e30d16c5436f9faf7fa00fa45f62bd4ba5634c4aa2526db831284efe
[INFO] running `Command { std: "docker" "start" "-a" "2f2a99a0e30d16c5436f9faf7fa00fa45f62bd4ba5634c4aa2526db831284efe", kill_on_drop: false }`
[INFO] [stderr]    Compiling num-traits v0.2.12
[INFO] [stderr]    Compiling num-integer v0.1.43
[INFO] [stderr]    Compiling num-bigint v0.3.0
[INFO] [stderr]    Compiling num-rational v0.3.0
[INFO] [stderr]    Compiling num-iter v0.1.41
[INFO] [stderr]    Compiling num-complex v0.3.0
[INFO] [stderr]    Compiling num v0.3.0
[INFO] [stderr]    Compiling halfbit v0.0.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 11.98s
[INFO] running `Command { std: "docker" "inspect" "2f2a99a0e30d16c5436f9faf7fa00fa45f62bd4ba5634c4aa2526db831284efe", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "2f2a99a0e30d16c5436f9faf7fa00fa45f62bd4ba5634c4aa2526db831284efe", kill_on_drop: false }`
[INFO] [stdout] 2f2a99a0e30d16c5436f9faf7fa00fa45f62bd4ba5634c4aa2526db831284efe
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/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=forbid" "-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@sha256:6eabd152ff4036248d66efda456a36cb33d24b7291b33f25f75140726c88da35" "/opt/rustwide/cargo-home/bin/cargo" "+eafdee2dfae8c2233b74f98b123308be7ccefcc6" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 5c4fa243592f603c02dd0cbbb18e0a7ff23a6871ee5412528c41451f4a32b3ae
[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" "5c4fa243592f603c02dd0cbbb18e0a7ff23a6871ee5412528c41451f4a32b3ae", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.79
[INFO] [stderr]    Compiling bitflags v1.2.1
[INFO] [stderr]    Compiling unicode-width v0.1.8
[INFO] [stderr]    Compiling strsim v0.8.0
[INFO] [stderr]    Compiling ansi_term v0.11.0
[INFO] [stderr]    Compiling vec_map v0.8.2
[INFO] [stderr]    Compiling textwrap v0.11.0
[INFO] [stderr]    Compiling atty v0.2.14
[INFO] [stderr]    Compiling clap v2.33.3
[INFO] [stderr]    Compiling halfbit v0.0.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/mm/alloc/bump.rs:236:13
[INFO] [stdout]     |
[INFO] [stdout] 236 |         let mut s = unsafe { core::slice::from_raw_parts_mut(p1, 2usize) };
[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] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 13.77s
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "5c4fa243592f603c02dd0cbbb18e0a7ff23a6871ee5412528c41451f4a32b3ae", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "5c4fa243592f603c02dd0cbbb18e0a7ff23a6871ee5412528c41451f4a32b3ae", kill_on_drop: false }`
[INFO] [stdout] 5c4fa243592f603c02dd0cbbb18e0a7ff23a6871ee5412528c41451f4a32b3ae
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/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=forbid" "-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@sha256:6eabd152ff4036248d66efda456a36cb33d24b7291b33f25f75140726c88da35" "/opt/rustwide/cargo-home/bin/cargo" "+eafdee2dfae8c2233b74f98b123308be7ccefcc6" "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] de39e79ade7c77c7e4ecd15b8fad2dfa67860cac2e8c80d88051fbcddf6f0d93
[INFO] running `Command { std: "docker" "start" "-a" "de39e79ade7c77c7e4ecd15b8fad2dfa67860cac2e8c80d88051fbcddf6f0d93", kill_on_drop: false }`
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]    --> src/mm/alloc/bump.rs:236:13
[INFO] [stderr]     |
[INFO] [stderr] 236 |         let mut s = unsafe { core::slice::from_raw_parts_mut(p1, 2usize) };
[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: 1 warning emitted
[INFO] [stderr] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.05s
[INFO] [stderr]      Running /opt/rustwide/target/debug/deps/halfbit-ffd7d4e61397564b
[INFO] [stdout] 
[INFO] [stdout] running 38 tests
[INFO] [stdout] test mm::alloc::bump::tests::alloc_1_byte_in_a_1_byte_buffer_works ... ok
[INFO] [stdout] test mm::alloc::bump::tests::dropping_last_allocation_reclaims_memory ... ok
[INFO] [stdout] test mm::alloc::bump::tests::raw_alloc_2_bytes_in_a_1_byte_buffer_fails ... ok
[INFO] [stdout] test mm::alloc::bump::tests::relevant_name ... ok
[INFO] [stdout] test mm::layout::tests::array_layout_too_large_when_aligned ... ok
[INFO] [stdout] test mm::alloc::bump::tests::raw_alloc_1_byte_in_a_1_byte_buffer_works ... ok
[INFO] [stdout] test mm::alloc::tests::layout_error_converts_to_alloc_error ... ok
[INFO] [stdout] test mm::alloc::bump::tests::shrink_non_last_allocation ... ok
[INFO] [stdout] test mm::alloc::bump::tests::grow_last_allocation_fails ... ok
[INFO] [stdout] test mm::alloc::bump::tests::fail_to_grow_by_reallocation ... ok
[INFO] [stdout] test mm::layout::tests::non_zero_layout_from_non_zero_size ... ok
[INFO] [stdout] test mm::alloc::bump::tests::shrink_last_allocation_reclaims_memory ... ok
[INFO] [stdout] test mm::alloc::bump::tests::grow_last_allocation_succeeds ... ok
[INFO] [stdout] test mm::layout::tests::unaligned_struct_size_is_multiplied_aligned_for_array_layout ... ok
[INFO] [stdout] test mm::alloc::null::tests::alloc_1_byte_fails ... ok
[INFO] [stdout] test mm::layout::tests::array_layout_at_max_size ... ok
[INFO] [stdout] test mm::alloc::bump::tests::grow_by_doing_a_new_allocation_succeeds ... ok
[INFO] [stdout] test mm::layout::tests::zero_items_array_layout ... ok
[INFO] [stdout] test mm::layout::tests::zero_sized_layout ... ok
[INFO] [stdout] test num::tests::is_power_of_2_checks ... ok
[INFO] [stdout] test num::tests::pow2usize_1_next ... ok
[INFO] [stdout] test mm::layout::tests::size_too_big_mem_layout ... ok
[INFO] [stdout] test mm::alloc::null::tests::relevant_name ... ok
[INFO] [stdout] test num::tests::pow2usize_1_prev ... ok
[INFO] [stdout] test num::tests::pow2usize_1_shl_non_overflowing ... ok
[INFO] [stdout] test mm::layout::tests::zero_sized_layout_with_large_alignment_converts_to_zero_sized_array_layout ... ok
[INFO] [stdout] test num::tests::pow2usize_1_shr_underflow_value ... ok
[INFO] [stdout] test num::tests::pow2usize_max ... ok
[INFO] [stdout] test num::tests::pow2usize_max_next ... ok
[INFO] [stdout] test mm::layout::tests::non_zero_layout_from_zero_size ... ok
[INFO] [stdout] test num::tests::pow2usize_max_prev ... ok
[INFO] [stdout] test mm::layout::tests::array_of_1_copies_layout ... ok
[INFO] [stdout] test mm::alloc::null::tests::raw_alloc_1_byte_fails ... ok
[INFO] [stdout] test num::tests::pow2usize_1_shr_overflow_counter ... ok
[INFO] [stdout] test tests::lib_name_compliant ... ok
[INFO] [stdout] test num::tests::pow2usize_1_shl_overflow_counter ... ok
[INFO] [stdout] test mm::layout::tests::bad_alignment_mem_layout ... ok
[INFO] [stdout] test mm::alloc::null::tests::raw_free_panics ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 38 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
[INFO] [stdout] 
[INFO] [stderr]    Doc-tests halfbit
[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" "de39e79ade7c77c7e4ecd15b8fad2dfa67860cac2e8c80d88051fbcddf6f0d93", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "de39e79ade7c77c7e4ecd15b8fad2dfa67860cac2e8c80d88051fbcddf6f0d93", kill_on_drop: false }`
[INFO] [stdout] de39e79ade7c77c7e4ecd15b8fad2dfa67860cac2e8c80d88051fbcddf6f0d93