[INFO] cloning repository https://github.com/mathieupoirier/vhost-device-test
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/mathieupoirier/vhost-device-test" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fmathieupoirier%2Fvhost-device-test", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fmathieupoirier%2Fvhost-device-test'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] b9fdfa4ff6d2146c6c1785085942dbccd4c68955
[INFO] checking mathieupoirier/vhost-device-test 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%2Fmathieupoirier%2Fvhost-device-test" "/workspace/builds/worker-3-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-3-tc2/source'...
[INFO] [stderr] done.
[INFO] removed /workspace/builds/worker-3-tc2/source/.cargo/config
[INFO] started tweaking git repo https://github.com/mathieupoirier/vhost-device-test
[INFO] finished tweaking git repo https://github.com/mathieupoirier/vhost-device-test
[INFO] tweaked toml for git repo https://github.com/mathieupoirier/vhost-device-test written to /workspace/builds/worker-3-tc2/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/mathieupoirier/vhost-device-test 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/mathieupoirier/vhost-device-test 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] warning: virtual workspace defaulting to `resolver = "1"` despite one or more workspace members being on edition 2021 which implies `resolver = "2"`
[INFO] [stderr]   |
[INFO] [stderr]   = note: to keep the current resolver, specify `workspace.resolver = "1"` in the workspace root's manifest
[INFO] [stderr]   = note: to use the edition 2021 resolver, specify `workspace.resolver = "2"` in the workspace root's manifest
[INFO] [stderr]   = note: for more details see https://doc.rust-lang.org/cargo/reference/resolver.html#resolver-versions
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-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] bfdcd7df68aefd3928e56d2535b8924fce84b1833149ec8e392ac5b218746c58
[INFO] running `Command { std: "docker" "start" "-a" "bfdcd7df68aefd3928e56d2535b8924fce84b1833149ec8e392ac5b218746c58", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "bfdcd7df68aefd3928e56d2535b8924fce84b1833149ec8e392ac5b218746c58", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "bfdcd7df68aefd3928e56d2535b8924fce84b1833149ec8e392ac5b218746c58", kill_on_drop: false }`
[INFO] [stdout] bfdcd7df68aefd3928e56d2535b8924fce84b1833149ec8e392ac5b218746c58
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-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] 89976f7628dcf26d71d04d19c7d756f6d009a5527d49b79a481ddb9e6c2a5cee
[INFO] running `Command { std: "docker" "start" "-a" "89976f7628dcf26d71d04d19c7d756f6d009a5527d49b79a481ddb9e6c2a5cee", kill_on_drop: false }`
[INFO] [stderr] warning: virtual workspace defaulting to `resolver = "1"` despite one or more workspace members being on edition 2021 which implies `resolver = "2"`
[INFO] [stderr]   |
[INFO] [stderr]   = note: to keep the current resolver, specify `workspace.resolver = "1"` in the workspace root's manifest
[INFO] [stderr]   = note: to use the edition 2021 resolver, specify `workspace.resolver = "2"` in the workspace root's manifest
[INFO] [stderr]   = note: for more details see https://doc.rust-lang.org/cargo/reference/resolver.html#resolver-versions
[INFO] [stderr]     Checking vmm-sys-util v0.10.0
[INFO] [stderr]     Checking atty v0.2.14
[INFO] [stderr]     Checking os_str_bytes v6.3.0
[INFO] [stderr]     Checking vm-memory v0.8.0
[INFO] [stderr]     Checking regex-syntax v0.6.27
[INFO] [stderr]     Checking virtio-bindings v0.1.0
[INFO] [stderr]     Checking humantime v2.1.0
[INFO] [stderr]     Checking textwrap v0.15.0
[INFO] [stderr]     Checking getrandom v0.2.7
[INFO] [stderr]     Checking aho-corasick v0.7.18
[INFO] [stderr]    Compiling clap_derive v3.2.17
[INFO] [stderr]    Compiling libgpiod-sys v0.1.0 (https://github.com/vireshk/libgpiod#9d8e18e2)
[INFO] [stderr]     Checking remove_dir_all v0.5.3
[INFO] [stderr]     Checking fastrand v1.8.0
[INFO] [stderr]     Checking epoll v4.3.1
[INFO] [stderr]     Checking rand_core v0.6.3
[INFO] [stderr]     Checking tempfile v3.3.0
[INFO] [stderr]     Checking rand_chacha v0.3.1
[INFO] [stderr]     Checking clap_lex v0.2.4
[INFO] [stderr]     Checking rand v0.8.5
[INFO] [stderr]     Checking virtio-queue v0.5.0
[INFO] [stderr]     Checking vhost v0.4.0
[INFO] [stderr]     Checking libgpiod v0.1.0 (https://github.com/vireshk/libgpiod#9d8e18e2)
[INFO] [stderr]     Checking regex v1.6.0
[INFO] [stderr]     Checking vhost-user-backend v0.6.0
[INFO] [stderr]     Checking env_logger v0.9.0
[INFO] [stderr]     Checking clap v3.2.17
[INFO] [stderr]     Checking vhost-device-gpio v0.1.0 (/opt/rustwide/workdir/gpio)
[INFO] [stderr]     Checking vhost-device-rng v0.1.0 (/opt/rustwide/workdir/rng)
[INFO] [stderr]     Checking vhost-device-i2c v0.1.0 (/opt/rustwide/workdir/i2c)
[INFO] [stdout] warning: unused import: `log::error`
[INFO] [stdout]  --> gpio/src/gpio.rs:8:5
[INFO] [stdout]   |
[INFO] [stdout] 8 | use log::error;
[INFO] [stdout]   |     ^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `log::error`
[INFO] [stdout]  --> gpio/src/gpio.rs:8:5
[INFO] [stdout]   |
[INFO] [stdout] 8 | use log::error;
[INFO] [stdout]   |     ^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: std::result::Result<std::string::String, Infallible>
[INFO] [stdout]   --> gpio/src/backend.rs:45:5
[INFO] [stdout]    |
[INFO] [stdout] 45 |     socket_path: 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: std::result::Result<std::string::String, Infallible>
[INFO] [stdout]   --> gpio/src/backend.rs:55:5
[INFO] [stdout]    |
[INFO] [stdout] 55 |     device_list: String,
[INFO] [stdout]    |     ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: std::result::Result<std::string::String, Infallible>
[INFO] [stdout]   --> i2c/src/main.rs:54:5
[INFO] [stdout]    |
[INFO] [stdout] 54 |     socket_path: 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: std::result::Result<std::string::String, Infallible>
[INFO] [stdout]   --> i2c/src/main.rs:63:5
[INFO] [stdout]    |
[INFO] [stdout] 63 |     device_list: String,
[INFO] [stdout]    |     ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `vhost-device-gpio` (bin "vhost-device-gpio") 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 `vhost-device-i2c` (bin "vhost-device-i2c") due to 2 previous errors
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> rng/src/vhu_rng.rs:129:17
[INFO] [stdout]     |
[INFO] [stdout] 129 |             let mut timer = &mut self.timer;
[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] error: this type will no longer be must used: std::result::Result<std::string::String, Infallible>
[INFO] [stdout]   --> gpio/src/backend.rs:45:5
[INFO] [stdout]    |
[INFO] [stdout] 45 |     socket_path: 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: std::result::Result<std::string::String, Infallible>
[INFO] [stdout]   --> gpio/src/backend.rs:55:5
[INFO] [stdout]    |
[INFO] [stdout] 55 |     device_list: String,
[INFO] [stdout]    |     ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `vhost-device-gpio` (bin "vhost-device-gpio" test) due to 2 previous errors; 1 warning emitted
[INFO] [stdout] error: this type will no longer be must used: std::result::Result<std::string::String, Infallible>
[INFO] [stdout]   --> rng/src/main.rs:58:5
[INFO] [stdout]    |
[INFO] [stdout] 58 |     socket_path: 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: std::result::Result<std::string::String, Infallible>
[INFO] [stdout]   --> rng/src/main.rs:62:5
[INFO] [stdout]    |
[INFO] [stdout] 62 |     rng_source: String,
[INFO] [stdout]    |     ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `vhost-device-rng` (bin "vhost-device-rng") due to 2 previous errors; 1 warning emitted
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> rng/src/vhu_rng.rs:129:17
[INFO] [stdout]     |
[INFO] [stdout] 129 |             let mut timer = &mut self.timer;
[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] error: this type will no longer be must used: std::result::Result<std::string::String, Infallible>
[INFO] [stdout]   --> rng/src/main.rs:58:5
[INFO] [stdout]    |
[INFO] [stdout] 58 |     socket_path: 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: std::result::Result<std::string::String, Infallible>
[INFO] [stdout]   --> rng/src/main.rs:62:5
[INFO] [stdout]    |
[INFO] [stdout] 62 |     rng_source: String,
[INFO] [stdout]    |     ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `vhost-device-rng` (bin "vhost-device-rng" test) due to 2 previous errors; 1 warning emitted
[INFO] [stdout] error: this type will no longer be must used: std::result::Result<std::string::String, Infallible>
[INFO] [stdout]   --> i2c/src/main.rs:54:5
[INFO] [stdout]    |
[INFO] [stdout] 54 |     socket_path: 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: std::result::Result<std::string::String, Infallible>
[INFO] [stdout]   --> i2c/src/main.rs:63:5
[INFO] [stdout]    |
[INFO] [stdout] 63 |     device_list: String,
[INFO] [stdout]    |     ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `vhost-device-i2c` (bin "vhost-device-i2c" test) due to 2 previous errors
[INFO] running `Command { std: "docker" "inspect" "89976f7628dcf26d71d04d19c7d756f6d009a5527d49b79a481ddb9e6c2a5cee", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "89976f7628dcf26d71d04d19c7d756f6d009a5527d49b79a481ddb9e6c2a5cee", kill_on_drop: false }`
[INFO] [stdout] 89976f7628dcf26d71d04d19c7d756f6d009a5527d49b79a481ddb9e6c2a5cee
