[INFO] fetching crate mmtkvdb 0.16.0...
[INFO] checking mmtkvdb-0.16.0 against try#4f260f0f20b3133d20cfb50353c0221943af5796+rustflags=-Dunmustuse_in_always_ok for pr-148577
[INFO] extracting crate mmtkvdb 0.16.0 into /workspace/builds/worker-2-tc2/source
[INFO] started tweaking crates.io crate mmtkvdb 0.16.0
[INFO] finished tweaking crates.io crate mmtkvdb 0.16.0
[INFO] tweaked toml for crates.io crate mmtkvdb 0.16.0 written to /workspace/builds/worker-2-tc2/source/Cargo.toml
[INFO] validating manifest of crates.io crate mmtkvdb 0.16.0 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] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+4f260f0f20b3133d20cfb50353c0221943af5796" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]      Locking 113 packages to latest compatible versions
[INFO] [stderr]       Adding bindgen v0.63.0 (available: v0.72.1)
[INFO] [stderr]       Adding criterion v0.4.0 (available: v0.7.0)
[INFO] [stderr]       Adding rand v0.8.5 (available: v0.9.2)
[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] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-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] 9127ddd53b840adfdd22f98007f7d4a8ee43c2dd2322107a6579a92948dab71c
[INFO] running `Command { std: "docker" "start" "-a" "9127ddd53b840adfdd22f98007f7d4a8ee43c2dd2322107a6579a92948dab71c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "9127ddd53b840adfdd22f98007f7d4a8ee43c2dd2322107a6579a92948dab71c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "9127ddd53b840adfdd22f98007f7d4a8ee43c2dd2322107a6579a92948dab71c", kill_on_drop: false }`
[INFO] [stdout] 9127ddd53b840adfdd22f98007f7d4a8ee43c2dd2322107a6579a92948dab71c
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-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] 9798785ccadfbc2ec1dc83610ef3edcc3923ddc014d5e7f0d948717d1ce79994
[INFO] running `Command { std: "docker" "start" "-a" "9798785ccadfbc2ec1dc83610ef3edcc3923ddc014d5e7f0d948717d1ce79994", kill_on_drop: false }`
[INFO] [stderr]    Compiling syn v2.0.110
[INFO] [stderr]    Compiling syn v1.0.109
[INFO] [stderr]    Compiling libc v0.2.177
[INFO] [stderr]    Compiling bindgen v0.63.0
[INFO] [stderr]    Compiling indexmap v1.9.3
[INFO] [stderr]     Checking getrandom v0.2.16
[INFO] [stderr]     Checking os_str_bytes v6.6.1
[INFO] [stderr]    Compiling getrandom v0.3.4
[INFO] [stderr]     Checking hashbrown v0.12.3
[INFO] [stderr]     Checking itertools v0.10.5
[INFO] [stderr]     Checking textwrap v0.16.2
[INFO] [stderr]     Checking plotters v0.3.7
[INFO] [stderr]     Checking atty v0.2.14
[INFO] [stderr]     Checking lazy_static v1.5.0
[INFO] [stderr]     Checking deref_owned v0.10.2
[INFO] [stderr]     Checking rand_core v0.6.4
[INFO] [stderr]     Checking clap_lex v0.2.4
[INFO] [stderr]     Checking tempfile v3.23.0
[INFO] [stderr]    Compiling clang-sys v1.8.1
[INFO] [stderr]     Checking criterion-plot v0.5.0
[INFO] [stderr]     Checking clap v3.2.25
[INFO] [stderr]    Compiling zerocopy-derive v0.8.27
[INFO] [stderr]    Compiling serde_derive v1.0.228
[INFO] [stderr]     Checking zerocopy v0.8.27
[INFO] [stderr]     Checking serde v1.0.228
[INFO] [stderr]     Checking half v2.7.1
[INFO] [stderr]     Checking ppv-lite86 v0.2.21
[INFO] [stderr]     Checking tinytemplate v1.2.1
[INFO] [stderr]     Checking ciborium-ll v0.2.2
[INFO] [stderr]     Checking rand_chacha v0.3.1
[INFO] [stderr]     Checking ciborium v0.2.2
[INFO] [stderr]     Checking rand v0.8.5
[INFO] [stderr]     Checking criterion v0.4.0
[INFO] [stderr]    Compiling mmtkvdb v0.16.0 (/opt/rustwide/workdir)
[INFO] [stdout] error: this type will no longer be must used: Result<usize, Infallible>
[INFO] [stdout]     --> src/lib.rs:1053:17
[INFO] [stdout]      |
[INFO] [stdout] 1053 |                 self.max_size.try_into().map_err(|_| {
[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<u32, Infallible>
[INFO] [stdout]     --> src/lib.rs:1100:17
[INFO] [stdout]      |
[INFO] [stdout] 1100 |                 self.unix_file_mode.try_into().map_err(|_| {
[INFO] [stdout]      |                 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<i32, Infallible>
[INFO] [stdout]     --> src/lib.rs:3229:16
[INFO] [stdout]      |
[INFO] [stdout] 3229 |         major: major.try_into().unwrap(),
[INFO] [stdout]      |                ^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<i32, Infallible>
[INFO] [stdout]     --> src/lib.rs:3230:16
[INFO] [stdout]      |
[INFO] [stdout] 3230 |         minor: minor.try_into().unwrap(),
[INFO] [stdout]      |                ^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<i32, Infallible>
[INFO] [stdout]     --> src/lib.rs:3231:16
[INFO] [stdout]      |
[INFO] [stdout] 3231 |         patch: patch.try_into().unwrap(),
[INFO] [stdout]      |                ^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `mmtkvdb` (lib) due to 5 previous errors
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stdout] warning: field `0` is never read
[INFO] [stdout]    --> src/tests.rs:932:20
[INFO] [stdout]     |
[INFO] [stdout] 932 |         struct Key(std::rc::Rc<()>);
[INFO] [stdout]     |                --- ^^^^^^^^^^^^^^^
[INFO] [stdout]     |                |
[INFO] [stdout]     |                field in this struct
[INFO] [stdout]     |
[INFO] [stdout]     = help: consider removing this field
[INFO] [stdout]     = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `0` is never read
[INFO] [stdout]    --> src/tests.rs:933:22
[INFO] [stdout]     |
[INFO] [stdout] 933 |         struct Value(std::rc::Rc<()>);
[INFO] [stdout]     |                ----- ^^^^^^^^^^^^^^^
[INFO] [stdout]     |                |
[INFO] [stdout]     |                field in this struct
[INFO] [stdout]     |
[INFO] [stdout]     = help: consider removing this field
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<usize, Infallible>
[INFO] [stdout]     --> src/lib.rs:1053:17
[INFO] [stdout]      |
[INFO] [stdout] 1053 |                 self.max_size.try_into().map_err(|_| {
[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<u32, Infallible>
[INFO] [stdout]     --> src/lib.rs:1100:17
[INFO] [stdout]      |
[INFO] [stdout] 1100 |                 self.unix_file_mode.try_into().map_err(|_| {
[INFO] [stdout]      |                 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<i32, Infallible>
[INFO] [stdout]     --> src/lib.rs:3229:16
[INFO] [stdout]      |
[INFO] [stdout] 3229 |         major: major.try_into().unwrap(),
[INFO] [stdout]      |                ^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<i32, Infallible>
[INFO] [stdout]     --> src/lib.rs:3230:16
[INFO] [stdout]      |
[INFO] [stdout] 3230 |         minor: minor.try_into().unwrap(),
[INFO] [stdout]      |                ^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<i32, Infallible>
[INFO] [stdout]     --> src/lib.rs:3231:16
[INFO] [stdout]      |
[INFO] [stdout] 3231 |         patch: patch.try_into().unwrap(),
[INFO] [stdout]      |                ^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `mmtkvdb` (lib test) due to 5 previous errors; 2 warnings emitted
[INFO] running `Command { std: "docker" "inspect" "9798785ccadfbc2ec1dc83610ef3edcc3923ddc014d5e7f0d948717d1ce79994", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "9798785ccadfbc2ec1dc83610ef3edcc3923ddc014d5e7f0d948717d1ce79994", kill_on_drop: false }`
[INFO] [stdout] 9798785ccadfbc2ec1dc83610ef3edcc3923ddc014d5e7f0d948717d1ce79994
