[INFO] fetching crate bitfields 0.2.0...
[INFO] testing bitfields-0.2.0 against master#5d5ff84130da0d74c6ece368dbe821d8f83fa526 for pr-79296
[INFO] extracting crate bitfields 0.2.0 into /workspace/builds/worker-5/source
[INFO] validating manifest of crates.io crate bitfields 0.2.0 on toolchain 5d5ff84130da0d74c6ece368dbe821d8f83fa526
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+5d5ff84130da0d74c6ece368dbe821d8f83fa526" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking crates.io crate bitfields 0.2.0
[INFO] finished tweaking crates.io crate bitfields 0.2.0
[INFO] tweaked toml for crates.io crate bitfields 0.2.0 written to /workspace/builds/worker-5/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+5d5ff84130da0d74c6ece368dbe821d8f83fa526" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+5d5ff84130da0d74c6ece368dbe821d8f83fa526" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/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" "+5d5ff84130da0d74c6ece368dbe821d8f83fa526" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] dd284b695b78f5fa8ceb6b3ad31a89a5f3924ea93c2cc02d622eeed400267f43
[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" "dd284b695b78f5fa8ceb6b3ad31a89a5f3924ea93c2cc02d622eeed400267f43", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "dd284b695b78f5fa8ceb6b3ad31a89a5f3924ea93c2cc02d622eeed400267f43", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "dd284b695b78f5fa8ceb6b3ad31a89a5f3924ea93c2cc02d622eeed400267f43", kill_on_drop: false }`
[INFO] [stdout] dd284b695b78f5fa8ceb6b3ad31a89a5f3924ea93c2cc02d622eeed400267f43
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/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" "+5d5ff84130da0d74c6ece368dbe821d8f83fa526" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 112b1840534ce992ddbde4a500d6c6d912f69725f23c3544e6f6f7cadf18e4f5
[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" "112b1840534ce992ddbde4a500d6c6d912f69725f23c3544e6f6f7cadf18e4f5", kill_on_drop: false }`
[INFO] [stderr]    Compiling bitfields v0.2.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unnecessary parentheses around block return value
[INFO] [stdout]    --> src/lib.rs:110:9
[INFO] [stdout]     |
[INFO] [stdout] 110 |         ((target >> pos) & 0b1)
[INFO] [stdout]     |         ^^^^^^^^^^^^^^^^^^^^^^^ help: remove these parentheses
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_parens)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `byte_bit_offset`
[INFO] [stdout]    --> src/lib.rs:105:12
[INFO] [stdout]     |
[INFO] [stdout] 105 |     pub fn byte_bit_offset(idx: usize) -> (usize, usize) {
[INFO] [stdout]     |            ^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `test_bit`
[INFO] [stdout]    --> src/lib.rs:113:12
[INFO] [stdout]     |
[INFO] [stdout] 113 |     pub fn test_bit(target: &u8, pos: usize) -> bool {
[INFO] [stdout]     |            ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `set_bit`
[INFO] [stdout]    --> src/lib.rs:117:12
[INFO] [stdout]     |
[INFO] [stdout] 117 |     pub fn set_bit(target: &mut u8, pos: usize) {
[INFO] [stdout]     |            ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `unset_bit`
[INFO] [stdout]    --> src/lib.rs:125:12
[INFO] [stdout]     |
[INFO] [stdout] 125 |     pub fn unset_bit(target: &mut u8, pos: usize) {
[INFO] [stdout]     |            ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `toggle_bit`
[INFO] [stdout]    --> src/lib.rs:129:12
[INFO] [stdout]     |
[INFO] [stdout] 129 |     pub fn toggle_bit(target: &mut u8, pos: usize) {
[INFO] [stdout]     |            ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 6 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.25s
[INFO] running `Command { std: "docker" "inspect" "112b1840534ce992ddbde4a500d6c6d912f69725f23c3544e6f6f7cadf18e4f5", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "112b1840534ce992ddbde4a500d6c6d912f69725f23c3544e6f6f7cadf18e4f5", kill_on_drop: false }`
[INFO] [stdout] 112b1840534ce992ddbde4a500d6c6d912f69725f23c3544e6f6f7cadf18e4f5
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/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" "+5d5ff84130da0d74c6ece368dbe821d8f83fa526" "test" "--frozen" "--no-run" "--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] 1339cd8cd894ee16c485b2054d1086fd8dd696d3812c541e953c2a9b31a58cd0
[INFO] running `Command { std: "docker" "start" "-a" "1339cd8cd894ee16c485b2054d1086fd8dd696d3812c541e953c2a9b31a58cd0", kill_on_drop: false }`
[INFO] [stderr]    Compiling bitfields v0.2.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unnecessary parentheses around block return value
[INFO] [stdout]    --> src/lib.rs:110:9
[INFO] [stdout]     |
[INFO] [stdout] 110 |         ((target >> pos) & 0b1)
[INFO] [stdout]     |         ^^^^^^^^^^^^^^^^^^^^^^^ help: remove these parentheses
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_parens)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `byte_bit_offset`
[INFO] [stdout]    --> src/lib.rs:105:12
[INFO] [stdout]     |
[INFO] [stdout] 105 |     pub fn byte_bit_offset(idx: usize) -> (usize, usize) {
[INFO] [stdout]     |            ^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `test_bit`
[INFO] [stdout]    --> src/lib.rs:113:12
[INFO] [stdout]     |
[INFO] [stdout] 113 |     pub fn test_bit(target: &u8, pos: usize) -> bool {
[INFO] [stdout]     |            ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `set_bit`
[INFO] [stdout]    --> src/lib.rs:117:12
[INFO] [stdout]     |
[INFO] [stdout] 117 |     pub fn set_bit(target: &mut u8, pos: usize) {
[INFO] [stdout]     |            ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `unset_bit`
[INFO] [stdout]    --> src/lib.rs:125:12
[INFO] [stdout]     |
[INFO] [stdout] 125 |     pub fn unset_bit(target: &mut u8, pos: usize) {
[INFO] [stdout]     |            ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `toggle_bit`
[INFO] [stdout]    --> src/lib.rs:129:12
[INFO] [stdout]     |
[INFO] [stdout] 129 |     pub fn toggle_bit(target: &mut u8, pos: usize) {
[INFO] [stdout]     |            ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 6 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around block return value
[INFO] [stdout]    --> src/lib.rs:110:9
[INFO] [stdout]     |
[INFO] [stdout] 110 |         ((target >> pos) & 0b1)
[INFO] [stdout]     |         ^^^^^^^^^^^^^^^^^^^^^^^ help: remove these parentheses
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_parens)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/lib.rs:394:13
[INFO] [stdout]     |
[INFO] [stdout] 394 |         let mut storage = vec![0u8];
[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] [stdout] warning: function is never used: `byte_bit_offset`
[INFO] [stdout]    --> src/lib.rs:105:12
[INFO] [stdout]     |
[INFO] [stdout] 105 |     pub fn byte_bit_offset(idx: usize) -> (usize, usize) {
[INFO] [stdout]     |            ^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 3 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 1.06s
[INFO] running `Command { std: "docker" "inspect" "1339cd8cd894ee16c485b2054d1086fd8dd696d3812c541e953c2a9b31a58cd0", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "1339cd8cd894ee16c485b2054d1086fd8dd696d3812c541e953c2a9b31a58cd0", kill_on_drop: false }`
[INFO] [stdout] 1339cd8cd894ee16c485b2054d1086fd8dd696d3812c541e953c2a9b31a58cd0
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/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" "+5d5ff84130da0d74c6ece368dbe821d8f83fa526" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] 5c431ca6be37a562ffd98e3b678248cc85e651b1c24becf5c2369183a02e4330
[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" "5c431ca6be37a562ffd98e3b678248cc85e651b1c24becf5c2369183a02e4330", kill_on_drop: false }`
[INFO] [stderr] warning: unnecessary parentheses around block return value
[INFO] [stderr]    --> src/lib.rs:110:9
[INFO] [stderr]     |
[INFO] [stderr] 110 |         ((target >> pos) & 0b1)
[INFO] [stderr]     |         ^^^^^^^^^^^^^^^^^^^^^^^ help: remove these parentheses
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(unused_parens)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `byte_bit_offset`
[INFO] [stderr]    --> src/lib.rs:105:12
[INFO] [stderr]     |
[INFO] [stderr] 105 |     pub fn byte_bit_offset(idx: usize) -> (usize, usize) {
[INFO] [stderr]     |            ^^^^^^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `test_bit`
[INFO] [stderr]    --> src/lib.rs:113:12
[INFO] [stderr]     |
[INFO] [stderr] 113 |     pub fn test_bit(target: &u8, pos: usize) -> bool {
[INFO] [stderr]     |            ^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `set_bit`
[INFO] [stderr]    --> src/lib.rs:117:12
[INFO] [stderr]     |
[INFO] [stderr] 117 |     pub fn set_bit(target: &mut u8, pos: usize) {
[INFO] [stderr]     |            ^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `unset_bit`
[INFO] [stderr]    --> src/lib.rs:125:12
[INFO] [stderr]     |
[INFO] [stderr] 125 |     pub fn unset_bit(target: &mut u8, pos: usize) {
[INFO] [stderr]     |            ^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `toggle_bit`
[INFO] [stderr]    --> src/lib.rs:129:12
[INFO] [stderr]     |
[INFO] [stderr] 129 |     pub fn toggle_bit(target: &mut u8, pos: usize) {
[INFO] [stderr]     |            ^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: 6 warnings emitted
[INFO] [stderr] 
[INFO] [stderr] warning: unnecessary parentheses around block return value
[INFO] [stderr]    --> src/lib.rs:110:9
[INFO] [stderr]     |
[INFO] [stderr] 110 |         ((target >> pos) & 0b1)
[INFO] [stderr]     |         ^^^^^^^^^^^^^^^^^^^^^^^ help: remove these parentheses
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(unused_parens)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]    --> src/lib.rs:394:13
[INFO] [stderr]     |
[INFO] [stderr] 394 |         let mut storage = vec![0u8];
[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: function is never used: `byte_bit_offset`
[INFO] [stderr]    --> src/lib.rs:105:12
[INFO] [stderr]     |
[INFO] [stderr] 105 |     pub fn byte_bit_offset(idx: usize) -> (usize, usize) {
[INFO] [stderr]     |            ^^^^^^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: 3 warnings emitted
[INFO] [stderr] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.03s
[INFO] [stderr]      Running /opt/rustwide/target/debug/deps/bitfields-583b11e74a1545fc
[INFO] [stdout] 
[INFO] [stdout] running 16 tests
[INFO] [stdout] test bit_twiddles::twiddle_tests::set ... ok
[INFO] [stdout] test bit_twiddles::twiddle_tests::set_to ... ok
[INFO] [stdout] test bit_twiddles::twiddle_tests::unset ... ok
[INFO] [stdout] test tests::overwrite ... ok
[INFO] [stdout] test bit_twiddles::twiddle_tests::test ... ok
[INFO] [stdout] test tests::store_and_retrieve ... ok
[INFO] [stdout] test bit_twiddles::twiddle_tests::get ... ok
[INFO] [stdout] test bit_twiddles::twiddle_tests::toggle ... ok
[INFO] [stdout] test tests::corrupted_read ... ok
[INFO] [stdout] test tests::invalid_field ... ok
[INFO] [stdout] test tests::store_too_wide ... ok
[INFO] [stdout] test bit_twiddles::twiddle_tests::set_to_with_large_pos ... ok
[INFO] [stdout] test bit_twiddles::twiddle_tests::get_with_large_pos ... ok
[INFO] [stderr]    Doc-tests bitfields
[INFO] [stdout] test bit_twiddles::twiddle_tests::toggle_with_large_pos ... ok
[INFO] [stdout] test bit_twiddles::twiddle_tests::unset_with_large_pos ... ok
[INFO] [stdout] test bit_twiddles::twiddle_tests::set_with_large_pos ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 16 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
[INFO] [stdout] 
[INFO] [stderr] warning: unnecessary parentheses around block return value
[INFO] [stderr]    --> /opt/rustwide/workdir/src/lib.rs:110:9
[INFO] [stderr]     |
[INFO] [stderr] 110 |         ((target >> pos) & 0b1)
[INFO] [stderr]     |         ^^^^^^^^^^^^^^^^^^^^^^^ help: remove these parentheses
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(unused_parens)]` on by default
[INFO] [stderr] 
[INFO] [stdout] 
[INFO] [stderr] warning: 1 warning emitted
[INFO] [stdout] running 0 tests
[INFO] [stderr] 
[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" "5c431ca6be37a562ffd98e3b678248cc85e651b1c24becf5c2369183a02e4330", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "5c431ca6be37a562ffd98e3b678248cc85e651b1c24becf5c2369183a02e4330", kill_on_drop: false }`
[INFO] [stdout] 5c431ca6be37a562ffd98e3b678248cc85e651b1c24becf5c2369183a02e4330