[INFO] fetching crate syswall 0.3.1...
[INFO] checking syswall-0.3.1 against eca445e5ae4a6679cc27d3a09106ce245e13a5a6 for pr-162478
[INFO] extracting crate syswall 0.3.1 into /workspace/builds/worker-7-tc1/source
[INFO] started tweaking crates.io crate syswall 0.3.1
[INFO] finished tweaking crates.io crate syswall 0.3.1
[INFO] tweaked toml for crates.io crate syswall 0.3.1 written to /workspace/builds/worker-7-tc1/source/Cargo.toml
[INFO] validating manifest of crates.io crate syswall 0.3.1 on toolchain eca445e5ae4a6679cc27d3a09106ce245e13a5a6
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+eca445e5ae4a6679cc27d3a09106ce245e13a5a6" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+eca445e5ae4a6679cc27d3a09106ce245e13a5a6" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]      Locking 25 packages to highest compatible versions
[INFO] [stderr]       Adding nix v0.13.1 (available: v0.31.3)
[INFO] [stderr]       Adding signal-hook v0.1.17 (available: v0.4.4)
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+eca445e5ae4a6679cc27d3a09106ce245e13a5a6" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded signal-hook v0.1.17
[INFO] [stderr]   Downloaded nix v0.13.1
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc1/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc1/target:/opt/rustwide/target:rw,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" "-m" "1610612736" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:8683fc1fc2eb5c9ac98e0d076ab094b2ffac7f99da555d2b6a2e27f346de2ec7" "sleep" "infinity", kill_on_drop: false }`
[INFO] [stdout] 6bb8639070be5d8fea18f2b4b19c2a17b4548a1806b3e1237c2534395f64f4e7
[INFO] running `Command { std: "docker" "start" "6bb8639070be5d8fea18f2b4b19c2a17b4548a1806b3e1237c2534395f64f4e7", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "6bb8639070be5d8fea18f2b4b19c2a17b4548a1806b3e1237c2534395f64f4e7", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "exec" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-w" "/opt/rustwide/workdir" "--user" "0:0" "6bb8639070be5d8fea18f2b4b19c2a17b4548a1806b3e1237c2534395f64f4e7" "/opt/rustwide/cargo-home/bin/cargo" "+eca445e5ae4a6679cc27d3a09106ce245e13a5a6" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "6bb8639070be5d8fea18f2b4b19c2a17b4548a1806b3e1237c2534395f64f4e7", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "exec" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-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" "-w" "/opt/rustwide/workdir" "--user" "0:0" "6bb8639070be5d8fea18f2b4b19c2a17b4548a1806b3e1237c2534395f64f4e7" "/opt/rustwide/cargo-home/bin/cargo" "+eca445e5ae4a6679cc27d3a09106ce245e13a5a6" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stderr]    Compiling nix v0.13.1
[INFO] [stderr]     Checking void v1.0.2
[INFO] [stderr]    Compiling syn v3.0.5
[INFO] [stderr]     Checking signal-hook v0.1.17
[INFO] [stderr]    Compiling serde_derive v1.0.229
[INFO] [stderr]     Checking serde v1.0.229
[INFO] [stderr]     Checking syswall v0.3.1 (/opt/rustwide/workdir)
[INFO] [stdout] warning: use of deprecated constant `std::u64::MAX`: replaced by the `MAX` associated constant on this type
[INFO] [stdout]   --> src/platforms/linux_x86_64/mod.rs:25:35
[INFO] [stdout]    |
[INFO] [stdout] 25 |         regs.orig_rax = std::u64::MAX;
[INFO] [stdout]    |                                   ^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(deprecated)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated constant `std::u64::MAX`: replaced by the `MAX` associated constant on this type
[INFO] [stdout]   --> src/platforms/linux_x86_64/mod.rs:25:35
[INFO] [stdout]    |
[INFO] [stdout] 25 |         regs.orig_rax = std::u64::MAX;
[INFO] [stdout]    |                                   ^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(deprecated)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/child_process.rs:300:17
[INFO] [stdout]     |
[INFO] [stdout] 300 |             let mut child = processes.0.get_mut(&pid).ok_or_else(|| format!(
[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: variable does not need to be mutable
[INFO] [stdout]    --> src/child_process.rs:418:32
[INFO] [stdout]     |
[INFO] [stdout] 418 |             } else if let Some(mut child) = processes.0.get_mut(&pid) {
[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/child_process.rs:300:17
[INFO] [stdout]     |
[INFO] [stdout] 300 |             let mut child = processes.0.get_mut(&pid).ok_or_else(|| format!(
[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: variable does not need to be mutable
[INFO] [stdout]    --> src/child_process.rs:418:32
[INFO] [stdout]     |
[INFO] [stdout] 418 |             } else if let Some(mut child) = processes.0.get_mut(&pid) {
[INFO] [stdout]     |                                ----^^^^^
[INFO] [stdout]     |                                |
[INFO] [stdout]     |                                help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 7.49s
[INFO] running `Command { std: "docker" "inspect" "6bb8639070be5d8fea18f2b4b19c2a17b4548a1806b3e1237c2534395f64f4e7", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "6bb8639070be5d8fea18f2b4b19c2a17b4548a1806b3e1237c2534395f64f4e7", kill_on_drop: false }`
[INFO] [stdout] 6bb8639070be5d8fea18f2b4b19c2a17b4548a1806b3e1237c2534395f64f4e7
