[INFO] fetching crate nop-json 2.0.5... [INFO] testing nop-json-2.0.5 against beta-2022-04-10 for beta-1.61-1 [INFO] extracting crate nop-json 2.0.5 into /workspace/builds/worker-3/source [INFO] validating manifest of crates.io crate nop-json 2.0.5 on toolchain beta-2022-04-10 [INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2022-04-10" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }` [INFO] started tweaking crates.io crate nop-json 2.0.5 [INFO] finished tweaking crates.io crate nop-json 2.0.5 [INFO] tweaked toml for crates.io crate nop-json 2.0.5 written to /workspace/builds/worker-3/source/Cargo.toml [INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2022-04-10" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }` [INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2022-04-10" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }` [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/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:eaef2f80f755933c374d2ae5edccceec0c1312ceb8a4e0b6404e8ab76561e1e5" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2022-04-10" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }` [INFO] [stdout] 60b36951d7f08d651b33f3880f789f2c050cc9ceb6ed54ce828e9d87b7a60f56 [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" "60b36951d7f08d651b33f3880f789f2c050cc9ceb6ed54ce828e9d87b7a60f56", kill_on_drop: false }` [INFO] running `Command { std: "docker" "inspect" "60b36951d7f08d651b33f3880f789f2c050cc9ceb6ed54ce828e9d87b7a60f56", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "60b36951d7f08d651b33f3880f789f2c050cc9ceb6ed54ce828e9d87b7a60f56", kill_on_drop: false }` [INFO] [stdout] 60b36951d7f08d651b33f3880f789f2c050cc9ceb6ed54ce828e9d87b7a60f56 [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/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" "ghcr.io/rust-lang/crates-build-env/linux@sha256:eaef2f80f755933c374d2ae5edccceec0c1312ceb8a4e0b6404e8ab76561e1e5" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2022-04-10" "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] ca071b83aca49fefaf377811bf268bcb7e7eff3da4ab1447697381aea413ef25 [INFO] running `Command { std: "docker" "start" "-a" "ca071b83aca49fefaf377811bf268bcb7e7eff3da4ab1447697381aea413ef25", kill_on_drop: false }` [INFO] [stderr] Compiling numtoa v0.2.4 [INFO] [stderr] Compiling nop-json-derive v2.0.5 [INFO] [stderr] Compiling nop-json v2.0.5 (/opt/rustwide/workdir) [INFO] [stdout] warning: unused borrow that must be used [INFO] [stdout] --> src/nop_json.rs:1169:4 [INFO] [stdout] | [INFO] [stdout] 1169 | &mut buffer[pos+len .. pos+len+e].copy_from_slice(&FORMAT_NUM_WIDTH_Z[0 .. e]); [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ the borrow produces a value [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_must_use)]` on by default [INFO] [stdout] help: use `let _ = ...` to ignore the resulting value [INFO] [stdout] | [INFO] [stdout] 1169 | let _ = &mut buffer[pos+len .. pos+len+e].copy_from_slice(&FORMAT_NUM_WIDTH_Z[0 .. e]); [INFO] [stdout] | +++++++ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused borrow that must be used [INFO] [stdout] --> src/nop_json.rs:1184:4 [INFO] [stdout] | [INFO] [stdout] 1184 | &mut buffer[pos .. pos+e-len+2].copy_from_slice(&FORMAT_NUM_WIDTH_0Z[0 .. e-len+2]); [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ the borrow produces a value [INFO] [stdout] | [INFO] [stdout] help: use `let _ = ...` to ignore the resulting value [INFO] [stdout] | [INFO] [stdout] 1184 | let _ = &mut buffer[pos .. pos+e-len+2].copy_from_slice(&FORMAT_NUM_WIDTH_0Z[0 .. e-len+2]); [INFO] [stdout] | +++++++ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused borrow that must be used [INFO] [stdout] --> src/nop_json.rs:1200:4 [INFO] [stdout] | [INFO] [stdout] 1200 | &mut buffer[len .. len+exponent_str.len()].copy_from_slice(exponent_str); [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ the borrow produces a value [INFO] [stdout] | [INFO] [stdout] help: use `let _ = ...` to ignore the resulting value [INFO] [stdout] | [INFO] [stdout] 1200 | let _ = &mut buffer[len .. len+exponent_str.len()].copy_from_slice(exponent_str); [INFO] [stdout] | +++++++ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused borrow that must be used [INFO] [stdout] --> src/nop_json.rs:2035:6 [INFO] [stdout] | [INFO] [stdout] 2035 | { &mut self.buffer[0 .. 4].copy_from_slice(b"null"); [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ the borrow produces a value [INFO] [stdout] | [INFO] [stdout] help: use `let _ = ...` to ignore the resulting value [INFO] [stdout] | [INFO] [stdout] 2035 | { let _ = &mut self.buffer[0 .. 4].copy_from_slice(b"null"); [INFO] [stdout] | +++++++ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused borrow that must be used [INFO] [stdout] --> src/nop_json.rs:2039:6 [INFO] [stdout] | [INFO] [stdout] 2039 | { &mut self.buffer[0 .. 5].copy_from_slice(b"false"); [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ the borrow produces a value [INFO] [stdout] | [INFO] [stdout] help: use `let _ = ...` to ignore the resulting value [INFO] [stdout] | [INFO] [stdout] 2039 | { let _ = &mut self.buffer[0 .. 5].copy_from_slice(b"false"); [INFO] [stdout] | +++++++ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused borrow that must be used [INFO] [stdout] --> src/nop_json.rs:2043:6 [INFO] [stdout] | [INFO] [stdout] 2043 | { &mut self.buffer[0 .. 4].copy_from_slice(b"true"); [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ the borrow produces a value [INFO] [stdout] | [INFO] [stdout] help: use `let _ = ...` to ignore the resulting value [INFO] [stdout] | [INFO] [stdout] 2043 | { let _ = &mut self.buffer[0 .. 4].copy_from_slice(b"true"); [INFO] [stdout] | +++++++ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused borrow that must be used [INFO] [stdout] --> src/debug_to_json.rs:176:5 [INFO] [stdout] | [INFO] [stdout] 176 | &mut buffer[0 .. mantissa.len()].copy_from_slice(&mantissa); [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ the borrow produces a value [INFO] [stdout] | [INFO] [stdout] help: use `let _ = ...` to ignore the resulting value [INFO] [stdout] | [INFO] [stdout] 176 | let _ = &mut buffer[0 .. mantissa.len()].copy_from_slice(&mantissa); [INFO] [stdout] | +++++++ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: 7 warnings emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stderr] Finished dev [unoptimized + debuginfo] target(s) in 6.61s [INFO] running `Command { std: "docker" "inspect" "ca071b83aca49fefaf377811bf268bcb7e7eff3da4ab1447697381aea413ef25", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "ca071b83aca49fefaf377811bf268bcb7e7eff3da4ab1447697381aea413ef25", kill_on_drop: false }` [INFO] [stdout] ca071b83aca49fefaf377811bf268bcb7e7eff3da4ab1447697381aea413ef25 [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/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" "ghcr.io/rust-lang/crates-build-env/linux@sha256:eaef2f80f755933c374d2ae5edccceec0c1312ceb8a4e0b6404e8ab76561e1e5" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2022-04-10" "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] 6bd09a8b1fe2c0a0278ca55fa6b6aa987757f5ccd51c03e6d47cfe5abb0be89a [INFO] running `Command { std: "docker" "start" "-a" "6bd09a8b1fe2c0a0278ca55fa6b6aa987757f5ccd51c03e6d47cfe5abb0be89a", kill_on_drop: false }` [INFO] [stderr] Compiling read_iter v0.1.2 [INFO] [stdout] warning: unused borrow that must be used [INFO] [stdout] --> src/nop_json.rs:1169:4 [INFO] [stdout] | [INFO] [stdout] 1169 | &mut buffer[pos+len .. pos+len+e].copy_from_slice(&FORMAT_NUM_WIDTH_Z[0 .. e]); [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ the borrow produces a value [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_must_use)]` on by default [INFO] [stdout] help: use `let _ = ...` to ignore the resulting value [INFO] [stdout] | [INFO] [stdout] 1169 | let _ = &mut buffer[pos+len .. pos+len+e].copy_from_slice(&FORMAT_NUM_WIDTH_Z[0 .. e]); [INFO] [stdout] | +++++++ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused borrow that must be used [INFO] [stdout] --> src/nop_json.rs:1184:4 [INFO] [stdout] | [INFO] [stdout] 1184 | &mut buffer[pos .. pos+e-len+2].copy_from_slice(&FORMAT_NUM_WIDTH_0Z[0 .. e-len+2]); [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ the borrow produces a value [INFO] [stdout] | [INFO] [stdout] help: use `let _ = ...` to ignore the resulting value [INFO] [stdout] | [INFO] [stdout] 1184 | let _ = &mut buffer[pos .. pos+e-len+2].copy_from_slice(&FORMAT_NUM_WIDTH_0Z[0 .. e-len+2]); [INFO] [stdout] | +++++++ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused borrow that must be used [INFO] [stdout] --> src/nop_json.rs:1200:4 [INFO] [stdout] | [INFO] [stdout] 1200 | &mut buffer[len .. len+exponent_str.len()].copy_from_slice(exponent_str); [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ the borrow produces a value [INFO] [stdout] | [INFO] [stdout] help: use `let _ = ...` to ignore the resulting value [INFO] [stdout] | [INFO] [stdout] 1200 | let _ = &mut buffer[len .. len+exponent_str.len()].copy_from_slice(exponent_str); [INFO] [stdout] | +++++++ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused borrow that must be used [INFO] [stdout] --> src/nop_json.rs:2035:6 [INFO] [stdout] | [INFO] [stdout] 2035 | { &mut self.buffer[0 .. 4].copy_from_slice(b"null"); [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ the borrow produces a value [INFO] [stdout] | [INFO] [stdout] help: use `let _ = ...` to ignore the resulting value [INFO] [stdout] | [INFO] [stdout] 2035 | { let _ = &mut self.buffer[0 .. 4].copy_from_slice(b"null"); [INFO] [stdout] | +++++++ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused borrow that must be used [INFO] [stdout] --> src/nop_json.rs:2039:6 [INFO] [stdout] | [INFO] [stdout] 2039 | { &mut self.buffer[0 .. 5].copy_from_slice(b"false"); [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ the borrow produces a value [INFO] [stdout] | [INFO] [stdout] help: use `let _ = ...` to ignore the resulting value [INFO] [stdout] | [INFO] [stdout] 2039 | { let _ = &mut self.buffer[0 .. 5].copy_from_slice(b"false"); [INFO] [stdout] | +++++++ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused borrow that must be used [INFO] [stdout] --> src/nop_json.rs:2043:6 [INFO] [stdout] | [INFO] [stdout] 2043 | { &mut self.buffer[0 .. 4].copy_from_slice(b"true"); [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ the borrow produces a value [INFO] [stdout] | [INFO] [stdout] help: use `let _ = ...` to ignore the resulting value [INFO] [stdout] | [INFO] [stdout] 2043 | { let _ = &mut self.buffer[0 .. 4].copy_from_slice(b"true"); [INFO] [stdout] | +++++++ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused borrow that must be used [INFO] [stdout] --> src/debug_to_json.rs:176:5 [INFO] [stdout] | [INFO] [stdout] 176 | &mut buffer[0 .. mantissa.len()].copy_from_slice(&mantissa); [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ the borrow produces a value [INFO] [stdout] | [INFO] [stdout] help: use `let _ = ...` to ignore the resulting value [INFO] [stdout] | [INFO] [stdout] 176 | let _ = &mut buffer[0 .. mantissa.len()].copy_from_slice(&mantissa); [INFO] [stdout] | +++++++ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: 7 warnings emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stderr] Compiling nop-json v2.0.5 (/opt/rustwide/workdir) [INFO] [stdout] warning: unused borrow that must be used [INFO] [stdout] --> src/nop_json.rs:1169:4 [INFO] [stdout] | [INFO] [stdout] 1169 | &mut buffer[pos+len .. pos+len+e].copy_from_slice(&FORMAT_NUM_WIDTH_Z[0 .. e]); [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ the borrow produces a value [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_must_use)]` on by default [INFO] [stdout] help: use `let _ = ...` to ignore the resulting value [INFO] [stdout] | [INFO] [stdout] 1169 | let _ = &mut buffer[pos+len .. pos+len+e].copy_from_slice(&FORMAT_NUM_WIDTH_Z[0 .. e]); [INFO] [stdout] | +++++++ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused borrow that must be used [INFO] [stdout] --> src/nop_json.rs:1184:4 [INFO] [stdout] | [INFO] [stdout] 1184 | &mut buffer[pos .. pos+e-len+2].copy_from_slice(&FORMAT_NUM_WIDTH_0Z[0 .. e-len+2]); [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ the borrow produces a value [INFO] [stdout] | [INFO] [stdout] help: use `let _ = ...` to ignore the resulting value [INFO] [stdout] | [INFO] [stdout] 1184 | let _ = &mut buffer[pos .. pos+e-len+2].copy_from_slice(&FORMAT_NUM_WIDTH_0Z[0 .. e-len+2]); [INFO] [stdout] | +++++++ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused borrow that must be used [INFO] [stdout] --> src/nop_json.rs:1200:4 [INFO] [stdout] | [INFO] [stdout] 1200 | &mut buffer[len .. len+exponent_str.len()].copy_from_slice(exponent_str); [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ the borrow produces a value [INFO] [stdout] | [INFO] [stdout] help: use `let _ = ...` to ignore the resulting value [INFO] [stdout] | [INFO] [stdout] 1200 | let _ = &mut buffer[len .. len+exponent_str.len()].copy_from_slice(exponent_str); [INFO] [stdout] | +++++++ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused borrow that must be used [INFO] [stdout] --> src/nop_json.rs:2035:6 [INFO] [stdout] | [INFO] [stdout] 2035 | { &mut self.buffer[0 .. 4].copy_from_slice(b"null"); [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ the borrow produces a value [INFO] [stdout] | [INFO] [stdout] help: use `let _ = ...` to ignore the resulting value [INFO] [stdout] | [INFO] [stdout] 2035 | { let _ = &mut self.buffer[0 .. 4].copy_from_slice(b"null"); [INFO] [stdout] | +++++++ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused borrow that must be used [INFO] [stdout] --> src/nop_json.rs:2039:6 [INFO] [stdout] | [INFO] [stdout] 2039 | { &mut self.buffer[0 .. 5].copy_from_slice(b"false"); [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ the borrow produces a value [INFO] [stdout] | [INFO] [stdout] help: use `let _ = ...` to ignore the resulting value [INFO] [stdout] | [INFO] [stdout] 2039 | { let _ = &mut self.buffer[0 .. 5].copy_from_slice(b"false"); [INFO] [stdout] | +++++++ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused borrow that must be used [INFO] [stdout] --> src/nop_json.rs:2043:6 [INFO] [stdout] | [INFO] [stdout] 2043 | { &mut self.buffer[0 .. 4].copy_from_slice(b"true"); [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ the borrow produces a value [INFO] [stdout] | [INFO] [stdout] help: use `let _ = ...` to ignore the resulting value [INFO] [stdout] | [INFO] [stdout] 2043 | { let _ = &mut self.buffer[0 .. 4].copy_from_slice(b"true"); [INFO] [stdout] | +++++++ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused borrow that must be used [INFO] [stdout] --> src/debug_to_json.rs:176:5 [INFO] [stdout] | [INFO] [stdout] 176 | &mut buffer[0 .. mantissa.len()].copy_from_slice(&mantissa); [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ the borrow produces a value [INFO] [stdout] | [INFO] [stdout] help: use `let _ = ...` to ignore the resulting value [INFO] [stdout] | [INFO] [stdout] 176 | let _ = &mut buffer[0 .. mantissa.len()].copy_from_slice(&mantissa); [INFO] [stdout] | +++++++ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: 7 warnings emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stderr] Finished test [unoptimized + debuginfo] target(s) in 3.89s [INFO] [stderr] Executable unittests src/lib.rs (/opt/rustwide/target/debug/deps/nop_json-6e5e6ad15c798502) [INFO] [stderr] Executable tests/all.rs (/opt/rustwide/target/debug/deps/all-6ba48330412b3011) [INFO] running `Command { std: "docker" "inspect" "6bd09a8b1fe2c0a0278ca55fa6b6aa987757f5ccd51c03e6d47cfe5abb0be89a", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "6bd09a8b1fe2c0a0278ca55fa6b6aa987757f5ccd51c03e6d47cfe5abb0be89a", kill_on_drop: false }` [INFO] [stdout] 6bd09a8b1fe2c0a0278ca55fa6b6aa987757f5ccd51c03e6d47cfe5abb0be89a [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/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" "ghcr.io/rust-lang/crates-build-env/linux@sha256:eaef2f80f755933c374d2ae5edccceec0c1312ceb8a4e0b6404e8ab76561e1e5" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2022-04-10" "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] af853b2a69d4ebc35e0b54dd713269d66cd446d231c3aaf7dc4f0dc55df3e3a4 [INFO] running `Command { std: "docker" "start" "-a" "af853b2a69d4ebc35e0b54dd713269d66cd446d231c3aaf7dc4f0dc55df3e3a4", kill_on_drop: false }` [INFO] [stdout] [INFO] [stderr] warning: unused borrow that must be used [INFO] [stdout] running 0 tests [INFO] [stderr] --> src/nop_json.rs:1169:4 [INFO] [stdout] [INFO] [stderr] | [INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s [INFO] [stderr] 1169 | &mut buffer[pos+len .. pos+len+e].copy_from_slice(&FORMAT_NUM_WIDTH_Z[0 .. e]); [INFO] [stdout] [INFO] [stderr] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ the borrow produces a value [INFO] [stderr] | [INFO] [stderr] = note: `#[warn(unused_must_use)]` on by default [INFO] [stderr] help: use `let _ = ...` to ignore the resulting value [INFO] [stderr] | [INFO] [stderr] 1169 | let _ = &mut buffer[pos+len .. pos+len+e].copy_from_slice(&FORMAT_NUM_WIDTH_Z[0 .. e]); [INFO] [stderr] | +++++++ [INFO] [stderr] [INFO] [stderr] warning: unused borrow that must be used [INFO] [stderr] --> src/nop_json.rs:1184:4 [INFO] [stderr] | [INFO] [stderr] 1184 | &mut buffer[pos .. pos+e-len+2].copy_from_slice(&FORMAT_NUM_WIDTH_0Z[0 .. e-len+2]); [INFO] [stderr] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ the borrow produces a value [INFO] [stderr] | [INFO] [stderr] help: use `let _ = ...` to ignore the resulting value [INFO] [stderr] | [INFO] [stderr] 1184 | let _ = &mut buffer[pos .. pos+e-len+2].copy_from_slice(&FORMAT_NUM_WIDTH_0Z[0 .. e-len+2]); [INFO] [stderr] | +++++++ [INFO] [stderr] [INFO] [stderr] warning: unused borrow that must be used [INFO] [stderr] --> src/nop_json.rs:1200:4 [INFO] [stderr] | [INFO] [stderr] 1200 | &mut buffer[len .. len+exponent_str.len()].copy_from_slice(exponent_str); [INFO] [stderr] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ the borrow produces a value [INFO] [stderr] | [INFO] [stderr] help: use `let _ = ...` to ignore the resulting value [INFO] [stderr] | [INFO] [stderr] 1200 | let _ = &mut buffer[len .. len+exponent_str.len()].copy_from_slice(exponent_str); [INFO] [stderr] | +++++++ [INFO] [stderr] [INFO] [stderr] warning: unused borrow that must be used [INFO] [stderr] --> src/nop_json.rs:2035:6 [INFO] [stderr] | [INFO] [stderr] 2035 | { &mut self.buffer[0 .. 4].copy_from_slice(b"null"); [INFO] [stderr] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ the borrow produces a value [INFO] [stderr] | [INFO] [stderr] help: use `let _ = ...` to ignore the resulting value [INFO] [stderr] | [INFO] [stderr] 2035 | { let _ = &mut self.buffer[0 .. 4].copy_from_slice(b"null"); [INFO] [stderr] | +++++++ [INFO] [stderr] [INFO] [stderr] warning: unused borrow that must be used [INFO] [stderr] --> src/nop_json.rs:2039:6 [INFO] [stderr] | [INFO] [stderr] 2039 | { &mut self.buffer[0 .. 5].copy_from_slice(b"false"); [INFO] [stderr] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ the borrow produces a value [INFO] [stderr] | [INFO] [stderr] help: use `let _ = ...` to ignore the resulting value [INFO] [stderr] | [INFO] [stderr] 2039 | { let _ = &mut self.buffer[0 .. 5].copy_from_slice(b"false"); [INFO] [stderr] | +++++++ [INFO] [stderr] [INFO] [stderr] warning: unused borrow that must be used [INFO] [stderr] --> src/nop_json.rs:2043:6 [INFO] [stderr] | [INFO] [stderr] 2043 | { &mut self.buffer[0 .. 4].copy_from_slice(b"true"); [INFO] [stderr] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ the borrow produces a value [INFO] [stderr] | [INFO] [stderr] help: use `let _ = ...` to ignore the resulting value [INFO] [stderr] | [INFO] [stderr] 2043 | { let _ = &mut self.buffer[0 .. 4].copy_from_slice(b"true"); [INFO] [stderr] | +++++++ [INFO] [stderr] [INFO] [stderr] warning: unused borrow that must be used [INFO] [stderr] --> src/debug_to_json.rs:176:5 [INFO] [stderr] | [INFO] [stderr] 176 | &mut buffer[0 .. mantissa.len()].copy_from_slice(&mantissa); [INFO] [stderr] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ the borrow produces a value [INFO] [stderr] | [INFO] [stderr] help: use `let _ = ...` to ignore the resulting value [INFO] [stderr] | [INFO] [stderr] 176 | let _ = &mut buffer[0 .. mantissa.len()].copy_from_slice(&mantissa); [INFO] [stderr] | +++++++ [INFO] [stderr] [INFO] [stderr] warning: `nop-json` (lib) generated 7 warnings [INFO] [stderr] warning: `nop-json` (lib test) generated 7 warnings (7 duplicates) [INFO] [stderr] Finished test [unoptimized + debuginfo] target(s) in 0.02s [INFO] [stderr] Running unittests src/lib.rs (/opt/rustwide/target/debug/deps/nop_json-6e5e6ad15c798502) [INFO] [stderr] Running tests/all.rs (/opt/rustwide/target/debug/deps/all-6ba48330412b3011) [INFO] [stdout] [INFO] [stdout] running 15 tests [INFO] [stdout] test test_bytes ... ok [INFO] [stdout] test test_char ... ok [INFO] [stdout] test test_escape ... ok [INFO] [stdout] test test_escape_bytes ... ok [INFO] [stdout] test test_value_number_to_string ... ok [INFO] [stdout] test test_write ... ok [INFO] [stdout] test test_value_is ... ok [INFO] [stderr] Doc-tests nop-json [INFO] [stdout] test test_number_as_string ... ok [INFO] [stdout] test test_number ... ok [INFO] [stdout] test test_string ... ok [INFO] [stdout] test test_object ... ok [INFO] [stdout] test test_value ... ok [INFO] [stdout] test test_pipe ... ok [INFO] [stdout] test test_to_json_string ... ok [INFO] [stdout] test test_number_to_string ... ok [INFO] [stdout] [INFO] [stdout] test result: ok. 15 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.01s [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] running 40 tests [INFO] [stdout] test src/lib.rs - (line 37) - compile ... ok [INFO] [stdout] test src/debug_to_json.rs - debug_to_json::DebugToJson (line 28) ... ok [INFO] [stdout] test src/debug_to_json.rs - debug_to_json::DebugToJson (line 37) ... ok [INFO] [stdout] test src/lib.rs - (line 29) ... ok [INFO] [stdout] test src/escape.rs - escape::escape (line 12) ... ok [INFO] [stdout] test src/lib.rs - (line 177) ... ok [INFO] [stdout] test src/nop_json.rs - nop_json::Reader::new (line 1247) - compile ... ok [INFO] [stdout] test src/debug_to_json.rs - debug_to_json::DebugToJson (line 16) ... ok [INFO] [stdout] test src/lib.rs - (line 75) ... ok [INFO] [stdout] test src/lib.rs - (line 95) ... ok [INFO] [stdout] test src/debug_to_json.rs - debug_to_json::DebugToJson::to_json_string (line 70) ... ok [INFO] [stdout] test src/lib.rs - (line 133) ... ok [INFO] [stdout] test src/nop_json.rs - nop_json::Reader::new (line 1218) ... ok [INFO] [stdout] test src/nop_json.rs - nop_json::Reader::read_array (line 2372) ... ok [INFO] [stdout] test src/debug_to_json.rs - debug_to_json::DebugToJson::to_json_string (line 63) ... ok [INFO] [stdout] test src/lib.rs - (line 145) ... ok [INFO] [stdout] test src/lib.rs - (line 163) ... ok [INFO] [stdout] test src/lib.rs - (line 53) ... ok [INFO] [stdout] test src/lib.rs - (line 108) ... ok [INFO] [stdout] test src/nop_json.rs - nop_json::Reader::new (line 1230) ... ok [INFO] [stdout] test src/nop_json.rs - nop_json::Reader::new (line 1224) ... ok [INFO] [stdout] test src/nop_json.rs - nop_json::Reader::new (line 1238) ... ok [INFO] [stdout] test src/nop_json.rs - nop_json::TryFromJson (line 543) ... ok [INFO] [stdout] test src/nop_json.rs - nop_json::Reader::read_blob (line 2078) ... ok [INFO] [stdout] test src/nop_json.rs - nop_json::TryFromJson (line 721) ... ok [INFO] [stdout] test src/nop_json.rs - nop_json::TryFromJson (line 591) ... ok [INFO] [stdout] test src/nop_json.rs - nop_json::Reader::read_blob (line 2088) ... ok [INFO] [stdout] test src/nop_json.rs - nop_json::Reader::read_object_use_buffer (line 2272) ... ok [INFO] [stdout] test src/nop_json.rs - nop_json::TryFromJson (line 571) ... ok [INFO] [stdout] test src/nop_json.rs - nop_json::TryFromJson (line 661) ... ok [INFO] [stdout] test src/nop_json.rs - nop_json::TryFromJson (line 633) ... ok [INFO] [stdout] test src/validate_json.rs - validate_json::ValidateJson (line 13) ... ok [INFO] [stdout] test src/value.rs - value::Value (line 20) ... ok [INFO] [stdout] test src/nop_json.rs - nop_json::Reader::read_object (line 2175) ... ok [INFO] [stdout] test src/nop_json.rs - nop_json::TryFromJson (line 611) ... ok [INFO] [stdout] test src/nop_json.rs - nop_json::TryFromJson (line 757) ... ok [INFO] [stdout] test src/nop_json.rs - nop_json::TryFromJson (line 688) ... ok [INFO] [stdout] test src/nop_json.rs - nop_json::TryFromJson (line 675) ... ok [INFO] [stdout] test src/value.rs - value::Value (line 31) ... ok [INFO] [stdout] test src/write_to_json.rs - write_to_json::WriteToJson (line 16) ... ok [INFO] [stdout] [INFO] [stdout] test result: ok. 40 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 11.60s [INFO] [stdout] [INFO] running `Command { std: "docker" "inspect" "af853b2a69d4ebc35e0b54dd713269d66cd446d231c3aaf7dc4f0dc55df3e3a4", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "af853b2a69d4ebc35e0b54dd713269d66cd446d231c3aaf7dc4f0dc55df3e3a4", kill_on_drop: false }` [INFO] [stdout] af853b2a69d4ebc35e0b54dd713269d66cd446d231c3aaf7dc4f0dc55df3e3a4