[INFO] fetching crate sysutil 0.7.2...
[INFO] testing sysutil-0.7.2 against master#ec6f9a5b4413f74386267ef8efc93712c2ce6db6 for pr-155739-1
[INFO] extracting crate sysutil 0.7.2 into /workspace/builds/worker-3-tc1/source
[INFO] started tweaking crates.io crate sysutil 0.7.2
[INFO] finished tweaking crates.io crate sysutil 0.7.2
[INFO] tweaked toml for crates.io crate sysutil 0.7.2 written to /workspace/builds/worker-3-tc1/source/Cargo.toml
[INFO] validating manifest of crates.io crate sysutil 0.7.2 on toolchain ec6f9a5b4413f74386267ef8efc93712c2ce6db6
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+ec6f9a5b4413f74386267ef8efc93712c2ce6db6" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate crates.io crate sysutil 0.7.2 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" "+ec6f9a5b4413f74386267ef8efc93712c2ce6db6" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded rsjson v0.5.1
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc1/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:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+ec6f9a5b4413f74386267ef8efc93712c2ce6db6" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 7e06885655d97fb30eea2e32d532e2479dd14589cdb8920e5eaa49a89076eff6
[INFO] running `Command { std: "docker" "start" "-a" "7e06885655d97fb30eea2e32d532e2479dd14589cdb8920e5eaa49a89076eff6", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "7e06885655d97fb30eea2e32d532e2479dd14589cdb8920e5eaa49a89076eff6", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "7e06885655d97fb30eea2e32d532e2479dd14589cdb8920e5eaa49a89076eff6", kill_on_drop: false }`
[INFO] [stdout] 7e06885655d97fb30eea2e32d532e2479dd14589cdb8920e5eaa49a89076eff6
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc1/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:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+ec6f9a5b4413f74386267ef8efc93712c2ce6db6" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 3dc23e1c20edd84d5bb08b8c214ecdff7476306989459f9628ece48d63382081
[INFO] running `Command { std: "docker" "start" "-a" "3dc23e1c20edd84d5bb08b8c214ecdff7476306989459f9628ece48d63382081", kill_on_drop: false }`
[INFO] [stderr]    Compiling rsjson v0.5.1
[INFO] [stderr]    Compiling sysutil v0.7.2 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused variable: `savedSize`
[INFO] [stdout]    --> src/cpu.rs:576:26
[INFO] [stdout]     |
[INFO] [stdout] 576 |                     let (savedSize, savedShared) = savedLevel;
[INFO] [stdout]     |                          ^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_savedSize`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/network.rs:419:21
[INFO] [stdout]     |
[INFO] [stdout] 419 |                 let mut interfaceEntry = iface.unwrap();
[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: for loop over an `Option`. This is more readably written as an `if let` statement
[INFO] [stdout]    --> src/cpu.rs:599:22
[INFO] [stdout]     |
[INFO] [stdout] 599 |         for chunk in chunks {
[INFO] [stdout]     |                      ^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(for_loops_over_fallibles)]` on by default
[INFO] [stdout] help: to check pattern in a loop use `while let`
[INFO] [stdout]     |
[INFO] [stdout] 599 -         for chunk in chunks {
[INFO] [stdout] 599 +         while let Some(chunk) = chunks {
[INFO] [stdout]     |
[INFO] [stdout] help: consider using `if let` to clear intent
[INFO] [stdout]     |
[INFO] [stdout] 599 -         for chunk in chunks {
[INFO] [stdout] 599 +         if let Some(chunk) = chunks {
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 1.71s
[INFO] running `Command { std: "docker" "inspect" "3dc23e1c20edd84d5bb08b8c214ecdff7476306989459f9628ece48d63382081", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "3dc23e1c20edd84d5bb08b8c214ecdff7476306989459f9628ece48d63382081", kill_on_drop: false }`
[INFO] [stdout] 3dc23e1c20edd84d5bb08b8c214ecdff7476306989459f9628ece48d63382081
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc1/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:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+ec6f9a5b4413f74386267ef8efc93712c2ce6db6" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 83ab91309dfceb602936e7442331047eca4d3eaefcd828efa3fe1fdd75600173
[INFO] running `Command { std: "docker" "start" "-a" "83ab91309dfceb602936e7442331047eca4d3eaefcd828efa3fe1fdd75600173", kill_on_drop: false }`
[INFO] [stdout] warning: unused variable: `savedSize`
[INFO] [stdout]    --> src/cpu.rs:576:26
[INFO] [stdout]     |
[INFO] [stdout] 576 |                     let (savedSize, savedShared) = savedLevel;
[INFO] [stdout]     |                          ^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_savedSize`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/network.rs:419:21
[INFO] [stdout]     |
[INFO] [stdout] 419 |                 let mut interfaceEntry = iface.unwrap();
[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: for loop over an `Option`. This is more readably written as an `if let` statement
[INFO] [stdout]    --> src/cpu.rs:599:22
[INFO] [stdout]     |
[INFO] [stdout] 599 |         for chunk in chunks {
[INFO] [stdout]     |                      ^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(for_loops_over_fallibles)]` on by default
[INFO] [stdout] help: to check pattern in a loop use `while let`
[INFO] [stdout]     |
[INFO] [stdout] 599 -         for chunk in chunks {
[INFO] [stdout] 599 +         while let Some(chunk) = chunks {
[INFO] [stdout]     |
[INFO] [stdout] help: consider using `if let` to clear intent
[INFO] [stdout]     |
[INFO] [stdout] 599 -         for chunk in chunks {
[INFO] [stdout] 599 +         if let Some(chunk) = chunks {
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]    Compiling sysutil v0.7.2 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused variable: `savedSize`
[INFO] [stdout]    --> src/cpu.rs:576:26
[INFO] [stdout]     |
[INFO] [stdout] 576 |                     let (savedSize, savedShared) = savedLevel;
[INFO] [stdout]     |                          ^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_savedSize`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/network.rs:419:21
[INFO] [stdout]     |
[INFO] [stdout] 419 |                 let mut interfaceEntry = iface.unwrap();
[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: for loop over an `Option`. This is more readably written as an `if let` statement
[INFO] [stdout]    --> src/cpu.rs:599:22
[INFO] [stdout]     |
[INFO] [stdout] 599 |         for chunk in chunks {
[INFO] [stdout]     |                      ^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(for_loops_over_fallibles)]` on by default
[INFO] [stdout] help: to check pattern in a loop use `while let`
[INFO] [stdout]     |
[INFO] [stdout] 599 -         for chunk in chunks {
[INFO] [stdout] 599 +         while let Some(chunk) = chunks {
[INFO] [stdout]     |
[INFO] [stdout] help: consider using `if let` to clear intent
[INFO] [stdout]     |
[INFO] [stdout] 599 -         for chunk in chunks {
[INFO] [stdout] 599 +         if let Some(chunk) = chunks {
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 1.14s
[INFO] running `Command { std: "docker" "inspect" "83ab91309dfceb602936e7442331047eca4d3eaefcd828efa3fe1fdd75600173", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "83ab91309dfceb602936e7442331047eca4d3eaefcd828efa3fe1fdd75600173", kill_on_drop: false }`
[INFO] [stdout] 83ab91309dfceb602936e7442331047eca4d3eaefcd828efa3fe1fdd75600173
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc1/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:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+ec6f9a5b4413f74386267ef8efc93712c2ce6db6" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] 60f5cf266bc021cd760f88d1fff69dd8df42ac4a1551eceb4ad4cde71ec296c6
[INFO] running `Command { std: "docker" "start" "-a" "60f5cf266bc021cd760f88d1fff69dd8df42ac4a1551eceb4ad4cde71ec296c6", kill_on_drop: false }`
[INFO] [stderr] warning: unused variable: `savedSize`
[INFO] [stderr]    --> src/cpu.rs:576:26
[INFO] [stderr]     |
[INFO] [stderr] 576 |                     let (savedSize, savedShared) = savedLevel;
[INFO] [stderr]     |                          ^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_savedSize`
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]    --> src/network.rs:419:21
[INFO] [stderr]     |
[INFO] [stderr] 419 |                 let mut interfaceEntry = iface.unwrap();
[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: for loop over an `Option`. This is more readably written as an `if let` statement
[INFO] [stderr]    --> src/cpu.rs:599:22
[INFO] [stderr]     |
[INFO] [stderr] 599 |         for chunk in chunks {
[INFO] [stderr]     |                      ^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(for_loops_over_fallibles)]` on by default
[INFO] [stderr] help: to check pattern in a loop use `while let`
[INFO] [stderr]     |
[INFO] [stderr] 599 -         for chunk in chunks {
[INFO] [stderr] 599 +         while let Some(chunk) = chunks {
[INFO] [stderr]     |
[INFO] [stderr] help: consider using `if let` to clear intent
[INFO] [stderr]     |
[INFO] [stderr] 599 -         for chunk in chunks {
[INFO] [stderr] 599 +         if let Some(chunk) = chunks {
[INFO] [stderr]     |
[INFO] [stderr] 
[INFO] [stderr] warning: `sysutil` (lib) generated 3 warnings (run `cargo fix --lib -p sysutil` to apply 2 suggestions)
[INFO] [stderr] warning: `sysutil` (lib test) generated 3 warnings (3 duplicates)
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.06s
[INFO] [stderr]      Running unittests src/lib.rs (/opt/rustwide/target/debug/deps/sysutil-64cc5d7a5de77e54)
[INFO] [stdout] 
[INFO] [stdout] running 1 test
[INFO] [stdout] test tests::test ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 1 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.06s
[INFO] [stdout] 
[INFO] [stderr]    Doc-tests sysutil
[INFO] [stdout] 
[INFO] [stdout] running 4 tests
[INFO] [stdout] test src/storage.rs - storage::ByteSize (line 18) ... FAILED
[INFO] [stdout] test src/lib.rs - (line 15) ... ok
[INFO] [stdout] test src/cpu.rs - cpu::Frequency (line 102) ... ok
[INFO] [stdout] test src/cpu.rs - cpu::CPU (line 60) ... ok
[INFO] [stdout] 
[INFO] [stdout] failures:
[INFO] [stdout] 
[INFO] [stdout] ---- src/storage.rs - storage::ByteSize (line 18) stdout ----
[INFO] [stdout] error: expected item, found keyword `let`
[INFO] [stdout]   --> src/storage.rs:19:1
[INFO] [stdout]    |
[INFO] [stdout] 19 | let byteSize = /* some sysutil function returning ByteSize */;
[INFO] [stdout]    | ^^^
[INFO] [stdout]    | |
[INFO] [stdout]    | `let` cannot be used for global variables
[INFO] [stdout]    | help: consider using `static` or `const` instead of `let`
[INFO] [stdout]    |
[INFO] [stdout]    = note: for a full list of items that can appear in modules, see <https://doc.rust-lang.org/reference/items.html>
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 1 previous error
[INFO] [stdout] 
[INFO] [stdout] Couldn't compile the test.
[INFO] [stdout] 
[INFO] [stdout] failures:
[INFO] [stdout]     src/storage.rs - storage::ByteSize (line 18)
[INFO] [stdout] 
[INFO] [stdout] test result: FAILED. 3 passed; 1 failed; 0 ignored; 0 measured; 0 filtered out; finished in 1.11s
[INFO] [stdout] 
[INFO] [stderr] error: doctest failed, to rerun pass `--doc`
[INFO] running `Command { std: "docker" "inspect" "60f5cf266bc021cd760f88d1fff69dd8df42ac4a1551eceb4ad4cde71ec296c6", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "60f5cf266bc021cd760f88d1fff69dd8df42ac4a1551eceb4ad4cde71ec296c6", kill_on_drop: false }`
[INFO] [stdout] 60f5cf266bc021cd760f88d1fff69dd8df42ac4a1551eceb4ad4cde71ec296c6
