[INFO] fetching crate nanbox2 0.1.2...
[INFO] testing nanbox2-0.1.2 against try#b83b707f97d809763b7861afa7638871f3339a33 for pr-145838-1
[INFO] extracting crate nanbox2 0.1.2 into /workspace/builds/worker-5-tc2/source
[INFO] started tweaking crates.io crate nanbox2 0.1.2
[INFO] finished tweaking crates.io crate nanbox2 0.1.2
[INFO] tweaked toml for crates.io crate nanbox2 0.1.2 written to /workspace/builds/worker-5-tc2/source/Cargo.toml
[INFO] validating manifest of crates.io crate nanbox2 0.1.2 on toolchain b83b707f97d809763b7861afa7638871f3339a33
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+b83b707f97d809763b7861afa7638871f3339a33" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate crates.io crate nanbox2 0.1.2 already has a lockfile, it will not be regenerated
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+b83b707f97d809763b7861afa7638871f3339a33" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc2/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@sha256:7ad1b28ee6f5f7f699f6cf7015098d6ccdd96d6f2d78dd06228f5b4c9faf309c" "/opt/rustwide/cargo-home/bin/cargo" "+b83b707f97d809763b7861afa7638871f3339a33" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 46bdea3d7e0343f74db3d9915ffe71dfa0be977d2c9ca3e0ec336b103ae52558
[INFO] running `Command { std: "docker" "start" "-a" "46bdea3d7e0343f74db3d9915ffe71dfa0be977d2c9ca3e0ec336b103ae52558", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "46bdea3d7e0343f74db3d9915ffe71dfa0be977d2c9ca3e0ec336b103ae52558", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "46bdea3d7e0343f74db3d9915ffe71dfa0be977d2c9ca3e0ec336b103ae52558", kill_on_drop: false }`
[INFO] [stdout] 46bdea3d7e0343f74db3d9915ffe71dfa0be977d2c9ca3e0ec336b103ae52558
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc2/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" "RUSTDOCFLAGS=--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" "ghcr.io/rust-lang/crates-build-env/linux@sha256:7ad1b28ee6f5f7f699f6cf7015098d6ccdd96d6f2d78dd06228f5b4c9faf309c" "/opt/rustwide/cargo-home/bin/cargo" "+b83b707f97d809763b7861afa7638871f3339a33" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 258cf44764df63b74ad58130515bcce14d3398b339613799f646cdc80053efa8
[INFO] running `Command { std: "docker" "start" "-a" "258cf44764df63b74ad58130515bcce14d3398b339613799f646cdc80053efa8", kill_on_drop: false }`
[INFO] [stderr]    Compiling spin v0.10.0
[INFO] [stderr]    Compiling nanbox2 v0.1.2 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unnecessary parentheses around assigned value
[INFO] [stdout]    --> src/lib.rs:142:17
[INFO] [stdout]     |
[INFO] [stdout] 142 |         let i = (r & MASK);
[INFO] [stdout]     |                 ^        ^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_parens)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] help: remove these parentheses
[INFO] [stdout]     |
[INFO] [stdout] 142 -         let i = (r & MASK);
[INFO] [stdout] 142 +         let i = r & MASK;
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary `unsafe` block
[INFO] [stdout]   --> src/lib.rs:32:13
[INFO] [stdout]    |
[INFO] [stdout] 32 |             unsafe {
[INFO] [stdout]    |             ^^^^^^ unnecessary `unsafe` block
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_unsafe)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary `unsafe` block
[INFO] [stdout]   --> src/lib.rs:38:13
[INFO] [stdout]    |
[INFO] [stdout] 38 |             unsafe { Self { raw: a } }
[INFO] [stdout]    |             ^^^^^^ unnecessary `unsafe` block
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/lib.rs:50:13
[INFO] [stdout]    |
[INFO] [stdout] 50 |         let mut l = NANS.lock();
[INFO] [stdout]    |             ----^
[INFO] [stdout]    |             |
[INFO] [stdout]    |             help: remove this `mut`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_mut)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary `unsafe` block
[INFO] [stdout]   --> src/lib.rs:67:9
[INFO] [stdout]    |
[INFO] [stdout] 67 |         unsafe {
[INFO] [stdout]    |         ^^^^^^ unnecessary `unsafe` block
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/lib.rs:82:13
[INFO] [stdout]    |
[INFO] [stdout] 82 |         let mut l = NANS.lock();
[INFO] [stdout]    |             ----^
[INFO] [stdout]    |             |
[INFO] [stdout]    |             help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/lib.rs:97:13
[INFO] [stdout]    |
[INFO] [stdout] 97 |         let mut l = NANS.lock();
[INFO] [stdout]    |             ----^
[INFO] [stdout]    |             |
[INFO] [stdout]    |             help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/lib.rs:112:13
[INFO] [stdout]     |
[INFO] [stdout] 112 |         let mut l = NANS.lock();
[INFO] [stdout]     |             ----^
[INFO] [stdout]     |             |
[INFO] [stdout]     |             help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/lib.rs:127:13
[INFO] [stdout]     |
[INFO] [stdout] 127 |         let mut l = NANS.lock();
[INFO] [stdout]     |             ----^
[INFO] [stdout]     |             |
[INFO] [stdout]     |             help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary `unsafe` block
[INFO] [stdout]    --> src/lib.rs:137:13
[INFO] [stdout]     |
[INFO] [stdout] 137 |             unsafe {
[INFO] [stdout]     |             ^^^^^^ unnecessary `unsafe` block
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary `unsafe` block
[INFO] [stdout]    --> src/lib.rs:151:17
[INFO] [stdout]     |
[INFO] [stdout] 151 |                 unsafe {
[INFO] [stdout]     |                 ^^^^^^ unnecessary `unsafe` block
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `float`
[INFO] [stdout]    --> src/lib.rs:184:34
[INFO] [stdout]     |
[INFO] [stdout] 184 |                     Entry::F64 { float, refc } => {
[INFO] [stdout]     |                                  ^^^^^ help: try ignoring the field: `float: _`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 0.43s
[INFO] running `Command { std: "docker" "inspect" "258cf44764df63b74ad58130515bcce14d3398b339613799f646cdc80053efa8", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "258cf44764df63b74ad58130515bcce14d3398b339613799f646cdc80053efa8", kill_on_drop: false }`
[INFO] [stdout] 258cf44764df63b74ad58130515bcce14d3398b339613799f646cdc80053efa8
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc2/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" "RUSTDOCFLAGS=--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" "ghcr.io/rust-lang/crates-build-env/linux@sha256:7ad1b28ee6f5f7f699f6cf7015098d6ccdd96d6f2d78dd06228f5b4c9faf309c" "/opt/rustwide/cargo-home/bin/cargo" "+b83b707f97d809763b7861afa7638871f3339a33" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] ae21e44aa017cc3d91b21b806f043b0c9614e263fe2234dc0e44c100e9ca25d4
[INFO] running `Command { std: "docker" "start" "-a" "ae21e44aa017cc3d91b21b806f043b0c9614e263fe2234dc0e44c100e9ca25d4", kill_on_drop: false }`
[INFO] [stderr]    Compiling nanbox2 v0.1.2 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unnecessary parentheses around assigned value
[INFO] [stdout]    --> src/lib.rs:142:17
[INFO] [stdout]     |
[INFO] [stdout] 142 |         let i = (r & MASK);
[INFO] [stdout]     |                 ^        ^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_parens)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] help: remove these parentheses
[INFO] [stdout]     |
[INFO] [stdout] 142 -         let i = (r & MASK);
[INFO] [stdout] 142 +         let i = r & MASK;
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary `unsafe` block
[INFO] [stdout]   --> src/lib.rs:32:13
[INFO] [stdout]    |
[INFO] [stdout] 32 |             unsafe {
[INFO] [stdout]    |             ^^^^^^ unnecessary `unsafe` block
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_unsafe)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary `unsafe` block
[INFO] [stdout]   --> src/lib.rs:38:13
[INFO] [stdout]    |
[INFO] [stdout] 38 |             unsafe { Self { raw: a } }
[INFO] [stdout]    |             ^^^^^^ unnecessary `unsafe` block
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/lib.rs:50:13
[INFO] [stdout]    |
[INFO] [stdout] 50 |         let mut l = NANS.lock();
[INFO] [stdout]    |             ----^
[INFO] [stdout]    |             |
[INFO] [stdout]    |             help: remove this `mut`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_mut)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary `unsafe` block
[INFO] [stdout]   --> src/lib.rs:67:9
[INFO] [stdout]    |
[INFO] [stdout] 67 |         unsafe {
[INFO] [stdout]    |         ^^^^^^ unnecessary `unsafe` block
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/lib.rs:82:13
[INFO] [stdout]    |
[INFO] [stdout] 82 |         let mut l = NANS.lock();
[INFO] [stdout]    |             ----^
[INFO] [stdout]    |             |
[INFO] [stdout]    |             help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/lib.rs:97:13
[INFO] [stdout]    |
[INFO] [stdout] 97 |         let mut l = NANS.lock();
[INFO] [stdout]    |             ----^
[INFO] [stdout]    |             |
[INFO] [stdout]    |             help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/lib.rs:112:13
[INFO] [stdout]     |
[INFO] [stdout] 112 |         let mut l = NANS.lock();
[INFO] [stdout]     |             ----^
[INFO] [stdout]     |             |
[INFO] [stdout]     |             help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/lib.rs:127:13
[INFO] [stdout]     |
[INFO] [stdout] 127 |         let mut l = NANS.lock();
[INFO] [stdout]     |             ----^
[INFO] [stdout]     |             |
[INFO] [stdout]     |             help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary `unsafe` block
[INFO] [stdout]    --> src/lib.rs:137:13
[INFO] [stdout]     |
[INFO] [stdout] 137 |             unsafe {
[INFO] [stdout]     |             ^^^^^^ unnecessary `unsafe` block
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary `unsafe` block
[INFO] [stdout]    --> src/lib.rs:151:17
[INFO] [stdout]     |
[INFO] [stdout] 151 |                 unsafe {
[INFO] [stdout]     |                 ^^^^^^ unnecessary `unsafe` block
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `float`
[INFO] [stdout]    --> src/lib.rs:184:34
[INFO] [stdout]     |
[INFO] [stdout] 184 |                     Entry::F64 { float, refc } => {
[INFO] [stdout]     |                                  ^^^^^ help: try ignoring the field: `float: _`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around assigned value
[INFO] [stdout]    --> src/lib.rs:142:17
[INFO] [stdout]     |
[INFO] [stdout] 142 |         let i = (r & MASK);
[INFO] [stdout]     |                 ^        ^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_parens)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] help: remove these parentheses
[INFO] [stdout]     |
[INFO] [stdout] 142 -         let i = (r & MASK);
[INFO] [stdout] 142 +         let i = r & MASK;
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary `unsafe` block
[INFO] [stdout]   --> src/lib.rs:32:13
[INFO] [stdout]    |
[INFO] [stdout] 32 |             unsafe {
[INFO] [stdout]    |             ^^^^^^ unnecessary `unsafe` block
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_unsafe)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary `unsafe` block
[INFO] [stdout]   --> src/lib.rs:38:13
[INFO] [stdout]    |
[INFO] [stdout] 38 |             unsafe { Self { raw: a } }
[INFO] [stdout]    |             ^^^^^^ unnecessary `unsafe` block
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/lib.rs:50:13
[INFO] [stdout]    |
[INFO] [stdout] 50 |         let mut l = NANS.lock();
[INFO] [stdout]    |             ----^
[INFO] [stdout]    |             |
[INFO] [stdout]    |             help: remove this `mut`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_mut)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary `unsafe` block
[INFO] [stdout]   --> src/lib.rs:67:9
[INFO] [stdout]    |
[INFO] [stdout] 67 |         unsafe {
[INFO] [stdout]    |         ^^^^^^ unnecessary `unsafe` block
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/lib.rs:82:13
[INFO] [stdout]    |
[INFO] [stdout] 82 |         let mut l = NANS.lock();
[INFO] [stdout]    |             ----^
[INFO] [stdout]    |             |
[INFO] [stdout]    |             help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/lib.rs:97:13
[INFO] [stdout]    |
[INFO] [stdout] 97 |         let mut l = NANS.lock();
[INFO] [stdout]    |             ----^
[INFO] [stdout]    |             |
[INFO] [stdout]    |             help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/lib.rs:112:13
[INFO] [stdout]     |
[INFO] [stdout] 112 |         let mut l = NANS.lock();
[INFO] [stdout]     |             ----^
[INFO] [stdout]     |             |
[INFO] [stdout]     |             help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/lib.rs:127:13
[INFO] [stdout]     |
[INFO] [stdout] 127 |         let mut l = NANS.lock();
[INFO] [stdout]     |             ----^
[INFO] [stdout]     |             |
[INFO] [stdout]     |             help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary `unsafe` block
[INFO] [stdout]    --> src/lib.rs:137:13
[INFO] [stdout]     |
[INFO] [stdout] 137 |             unsafe {
[INFO] [stdout]     |             ^^^^^^ unnecessary `unsafe` block
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary `unsafe` block
[INFO] [stdout]    --> src/lib.rs:151:17
[INFO] [stdout]     |
[INFO] [stdout] 151 |                 unsafe {
[INFO] [stdout]     |                 ^^^^^^ unnecessary `unsafe` block
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `float`
[INFO] [stdout]    --> src/lib.rs:184:34
[INFO] [stdout]     |
[INFO] [stdout] 184 |                     Entry::F64 { float, refc } => {
[INFO] [stdout]     |                                  ^^^^^ help: try ignoring the field: `float: _`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.50s
[INFO] running `Command { std: "docker" "inspect" "ae21e44aa017cc3d91b21b806f043b0c9614e263fe2234dc0e44c100e9ca25d4", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "ae21e44aa017cc3d91b21b806f043b0c9614e263fe2234dc0e44c100e9ca25d4", kill_on_drop: false }`
[INFO] [stdout] ae21e44aa017cc3d91b21b806f043b0c9614e263fe2234dc0e44c100e9ca25d4
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc2/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" "RUSTDOCFLAGS=--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" "ghcr.io/rust-lang/crates-build-env/linux@sha256:7ad1b28ee6f5f7f699f6cf7015098d6ccdd96d6f2d78dd06228f5b4c9faf309c" "/opt/rustwide/cargo-home/bin/cargo" "+b83b707f97d809763b7861afa7638871f3339a33" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] d50c4a1251c55f23865607b96c7fed8b62723c396db8ba1d30148891995e1b95
[INFO] running `Command { std: "docker" "start" "-a" "d50c4a1251c55f23865607b96c7fed8b62723c396db8ba1d30148891995e1b95", kill_on_drop: false }`
[INFO] [stderr] warning: unnecessary parentheses around assigned value
[INFO] [stderr]    --> src/lib.rs:142:17
[INFO] [stderr]     |
[INFO] [stderr] 142 |         let i = (r & MASK);
[INFO] [stderr]     |                 ^        ^
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(unused_parens)]` (part of `#[warn(unused)]`) on by default
[INFO] [stderr] help: remove these parentheses
[INFO] [stderr]     |
[INFO] [stderr] 142 -         let i = (r & MASK);
[INFO] [stderr] 142 +         let i = r & MASK;
[INFO] [stderr]     |
[INFO] [stderr] 
[INFO] [stderr] warning: unnecessary `unsafe` block
[INFO] [stderr]   --> src/lib.rs:32:13
[INFO] [stderr]    |
[INFO] [stderr] 32 |             unsafe {
[INFO] [stderr]    |             ^^^^^^ unnecessary `unsafe` block
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_unsafe)]` (part of `#[warn(unused)]`) on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unnecessary `unsafe` block
[INFO] [stderr]   --> src/lib.rs:38:13
[INFO] [stderr]    |
[INFO] [stderr] 38 |             unsafe { Self { raw: a } }
[INFO] [stderr]    |             ^^^^^^ unnecessary `unsafe` block
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]   --> src/lib.rs:50:13
[INFO] [stderr]    |
[INFO] [stderr] 50 |         let mut l = NANS.lock();
[INFO] [stderr]    |             ----^
[INFO] [stderr]    |             |
[INFO] [stderr]    |             help: remove this `mut`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_mut)]` (part of `#[warn(unused)]`) on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unnecessary `unsafe` block
[INFO] [stderr]   --> src/lib.rs:67:9
[INFO] [stderr]    |
[INFO] [stderr] 67 |         unsafe {
[INFO] [stderr]    |         ^^^^^^ unnecessary `unsafe` block
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]   --> src/lib.rs:82:13
[INFO] [stderr]    |
[INFO] [stderr] 82 |         let mut l = NANS.lock();
[INFO] [stderr]    |             ----^
[INFO] [stderr]    |             |
[INFO] [stderr]    |             help: remove this `mut`
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]   --> src/lib.rs:97:13
[INFO] [stderr]    |
[INFO] [stderr] 97 |         let mut l = NANS.lock();
[INFO] [stderr]    |             ----^
[INFO] [stderr]    |             |
[INFO] [stderr]    |             help: remove this `mut`
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]    --> src/lib.rs:112:13
[INFO] [stderr]     |
[INFO] [stderr] 112 |         let mut l = NANS.lock();
[INFO] [stderr]     |             ----^
[INFO] [stderr]     |             |
[INFO] [stderr]     |             help: remove this `mut`
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]    --> src/lib.rs:127:13
[INFO] [stderr]     |
[INFO] [stderr] 127 |         let mut l = NANS.lock();
[INFO] [stderr]     |             ----^
[INFO] [stderr]     |             |
[INFO] [stderr]     |             help: remove this `mut`
[INFO] [stderr] 
[INFO] [stderr] warning: unnecessary `unsafe` block
[INFO] [stderr]    --> src/lib.rs:137:13
[INFO] [stderr]     |
[INFO] [stderr] 137 |             unsafe {
[INFO] [stderr]     |             ^^^^^^ unnecessary `unsafe` block
[INFO] [stderr] 
[INFO] [stderr] warning: unnecessary `unsafe` block
[INFO] [stderr]    --> src/lib.rs:151:17
[INFO] [stderr]     |
[INFO] [stderr] 151 |                 unsafe {
[INFO] [stderr]     |                 ^^^^^^ unnecessary `unsafe` block
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `float`
[INFO] [stderr]    --> src/lib.rs:184:34
[INFO] [stderr]     |
[INFO] [stderr] 184 |                     Entry::F64 { float, refc } => {
[INFO] [stderr]     |                                  ^^^^^ help: try ignoring the field: `float: _`
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default
[INFO] [stderr] 
[INFO] [stderr] warning: `nanbox2` (lib) generated 12 warnings (run `cargo fix --lib -p nanbox2` to apply 6 suggestions)
[INFO] [stderr] warning: `nanbox2` (lib test) generated 12 warnings (12 duplicates)
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.05s
[INFO] [stdout] 
[INFO] [stderr]      Running unittests src/lib.rs (/opt/rustwide/target/debug/deps/nanbox2-fea267b5d6a81c71)
[INFO] [stdout] running 0 tests
[INFO] [stderr]    Doc-tests nanbox2
[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] [stderr] warning: unnecessary parentheses around assigned value
[INFO] [stderr]    --> src/lib.rs:142:17
[INFO] [stderr]     |
[INFO] [stderr] 142 |         let i = (r & MASK);
[INFO] [stderr]     |                 ^        ^
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(unused_parens)]` (part of `#[warn(unused)]`) on by default
[INFO] [stderr] help: remove these parentheses
[INFO] [stderr]     |
[INFO] [stderr] 142 -         let i = (r & MASK);
[INFO] [stderr] 142 +         let i = r & MASK;
[INFO] [stderr]     |
[INFO] [stderr] 
[INFO] [stderr] warning: 1 warning emitted
[INFO] [stderr] 
[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" "d50c4a1251c55f23865607b96c7fed8b62723c396db8ba1d30148891995e1b95", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "d50c4a1251c55f23865607b96c7fed8b62723c396db8ba1d30148891995e1b95", kill_on_drop: false }`
[INFO] [stdout] d50c4a1251c55f23865607b96c7fed8b62723c396db8ba1d30148891995e1b95