[INFO] cloning repository https://github.com/linchpiner/cgroup-memory-manager
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/linchpiner/cgroup-memory-manager" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Flinchpiner%2Fcgroup-memory-manager", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Flinchpiner%2Fcgroup-memory-manager'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 48cbf1e45a4401a1c0ed72d511dfc2f129daff16
[INFO] checking linchpiner/cgroup-memory-manager against try#4f260f0f20b3133d20cfb50353c0221943af5796+rustflags=-Dunmustuse_in_always_ok for pr-148577
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Flinchpiner%2Fcgroup-memory-manager" "/workspace/builds/worker-1-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-1-tc2/source'...
[INFO] [stderr] done.
[INFO] started tweaking git repo https://github.com/linchpiner/cgroup-memory-manager
[INFO] finished tweaking git repo https://github.com/linchpiner/cgroup-memory-manager
[INFO] tweaked toml for git repo https://github.com/linchpiner/cgroup-memory-manager written to /workspace/builds/worker-1-tc2/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/linchpiner/cgroup-memory-manager on toolchain 4f260f0f20b3133d20cfb50353c0221943af5796
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+4f260f0f20b3133d20cfb50353c0221943af5796" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/linchpiner/cgroup-memory-manager 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" "+4f260f0f20b3133d20cfb50353c0221943af5796" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-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@sha256:4848fb76d95f26979359cc7e45710b1dbc8f3acb7aeedee7c460d7702230f228" "/opt/rustwide/cargo-home/bin/cargo" "+4f260f0f20b3133d20cfb50353c0221943af5796" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] af828ea3702abf14eafc1789f84851639433923ca816906142189ceb09465ebc
[INFO] running `Command { std: "docker" "start" "-a" "af828ea3702abf14eafc1789f84851639433923ca816906142189ceb09465ebc", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "af828ea3702abf14eafc1789f84851639433923ca816906142189ceb09465ebc", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "af828ea3702abf14eafc1789f84851639433923ca816906142189ceb09465ebc", kill_on_drop: false }`
[INFO] [stdout] af828ea3702abf14eafc1789f84851639433923ca816906142189ceb09465ebc
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-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 -Dunmustuse_in_always_ok" "-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@sha256:4848fb76d95f26979359cc7e45710b1dbc8f3acb7aeedee7c460d7702230f228" "/opt/rustwide/cargo-home/bin/cargo" "+4f260f0f20b3133d20cfb50353c0221943af5796" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 24508d6ccfdac0e8a815ad320f8b30071175b9a5c58c93f5a902c0cb23a7dc5b
[INFO] running `Command { std: "docker" "start" "-a" "24508d6ccfdac0e8a815ad320f8b30071175b9a5c58c93f5a902c0cb23a7dc5b", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.12
[INFO] [stderr]    Compiling unicode-xid v0.2.0
[INFO] [stderr]    Compiling syn v1.0.18
[INFO] [stderr]    Compiling version_check v0.9.1
[INFO] [stderr]    Compiling libc v0.2.69
[INFO] [stderr]    Compiling memchr v2.3.3
[INFO] [stderr]    Compiling cc v1.0.52
[INFO] [stderr]    Compiling autocfg v1.0.0
[INFO] [stderr]    Compiling unicode-segmentation v1.6.0
[INFO] [stderr]    Compiling failure_derive v0.1.8
[INFO] [stderr]    Compiling log v0.4.8
[INFO] [stderr]     Checking rustc-demangle v0.1.16
[INFO] [stderr]     Checking thread_local v1.0.1
[INFO] [stderr]     Checking unicode-width v0.1.7
[INFO] [stderr]     Checking regex-syntax v0.6.17
[INFO] [stderr]     Checking termcolor v1.1.0
[INFO] [stderr]     Checking humantime v1.3.0
[INFO] [stderr]     Checking textwrap v0.11.0
[INFO] [stderr]     Checking os_str_bytes v2.3.1
[INFO] [stderr]     Checking vec_map v0.8.2
[INFO] [stderr]     Checking walkdir v2.3.1
[INFO] [stderr]    Compiling proc-macro-error-attr v0.4.12
[INFO] [stderr]    Compiling proc-macro-error v0.4.12
[INFO] [stderr]     Checking ex v0.1.3
[INFO] [stderr]     Checking byte-unit v3.1.2
[INFO] [stderr]    Compiling indexmap v1.3.2
[INFO] [stderr]    Compiling heck v0.3.1
[INFO] [stderr]     Checking atty v0.2.14
[INFO] [stderr]    Compiling backtrace-sys v0.1.23
[INFO] [stderr]     Checking aho-corasick v0.7.10
[INFO] [stderr]    Compiling quote v1.0.4
[INFO] [stderr]     Checking regex v1.3.7
[INFO] [stderr]     Checking backtrace v0.3.38
[INFO] [stderr]     Checking env_logger v0.7.1
[INFO] [stderr]    Compiling syn-mid v0.5.0
[INFO] [stderr]    Compiling synstructure v0.12.3
[INFO] [stderr]     Checking failure v0.1.8
[INFO] [stderr]    Compiling clap_derive v3.0.0-beta.1
[INFO] [stderr]     Checking clap v3.0.0-beta.1
[INFO] [stderr]     Checking cgroup-memory-manager v0.0.1 (/opt/rustwide/workdir)
[INFO] [stdout] warning: field `rss` is never read
[INFO] [stdout]   --> src/main.rs:79:9
[INFO] [stdout]    |
[INFO] [stdout] 76 | struct MemoryStats {
[INFO] [stdout]    |        ----------- field in this struct
[INFO] [stdout] ...
[INFO] [stdout] 79 |     pub rss: u64,
[INFO] [stdout]    |         ^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `MemoryStats` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout]    = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `rss` is never read
[INFO] [stdout]   --> src/main.rs:79:9
[INFO] [stdout]    |
[INFO] [stdout] 76 | struct MemoryStats {
[INFO] [stdout]    |        ----------- field in this struct
[INFO] [stdout] ...
[INFO] [stdout] 79 |     pub rss: u64,
[INFO] [stdout]    |         ^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `MemoryStats` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout]    = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<String, Infallible>
[INFO] [stdout]   --> src/main.rs:21:5
[INFO] [stdout]    |
[INFO] [stdout] 21 | /     /// Path to the parent cgroup
[INFO] [stdout] 22 | |     #[clap(long, default_value = "/sys/fs/cgroup/memory/docker")]
[INFO] [stdout] 23 | |     parent: String,
[INFO] [stdout]    | |__________________^
[INFO] [stdout]    |
[INFO] [stdout]    = note: requested on the command line with `-D unmustuse-in-always-ok`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<String, Infallible>
[INFO] [stdout]   --> src/main.rs:24:5
[INFO] [stdout]    |
[INFO] [stdout] 24 | /     /// Cache usage threshold in % of memory limit, or bytes (other units are also supported)
[INFO] [stdout] 25 | |     #[clap(long, default_value = "25%")]
[INFO] [stdout] 26 | |     threshold: String,
[INFO] [stdout]    | |_____________________^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<String, Infallible>
[INFO] [stdout]   --> src/main.rs:21:5
[INFO] [stdout]    |
[INFO] [stdout] 21 | /     /// Path to the parent cgroup
[INFO] [stdout] 22 | |     #[clap(long, default_value = "/sys/fs/cgroup/memory/docker")]
[INFO] [stdout] 23 | |     parent: String,
[INFO] [stdout]    | |__________________^
[INFO] [stdout]    |
[INFO] [stdout]    = note: requested on the command line with `-D unmustuse-in-always-ok`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<String, Infallible>
[INFO] [stdout]   --> src/main.rs:24:5
[INFO] [stdout]    |
[INFO] [stdout] 24 | /     /// Cache usage threshold in % of memory limit, or bytes (other units are also supported)
[INFO] [stdout] 25 | |     #[clap(long, default_value = "25%")]
[INFO] [stdout] 26 | |     threshold: String,
[INFO] [stdout]    | |_____________________^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `cgroup-memory-manager` (bin "cgroup-memory-manager") due to 2 previous errors; 1 warning emitted
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stderr] error: could not compile `cgroup-memory-manager` (bin "cgroup-memory-manager" test) due to 2 previous errors; 1 warning emitted
[INFO] running `Command { std: "docker" "inspect" "24508d6ccfdac0e8a815ad320f8b30071175b9a5c58c93f5a902c0cb23a7dc5b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "24508d6ccfdac0e8a815ad320f8b30071175b9a5c58c93f5a902c0cb23a7dc5b", kill_on_drop: false }`
[INFO] [stdout] 24508d6ccfdac0e8a815ad320f8b30071175b9a5c58c93f5a902c0cb23a7dc5b