[INFO] fetching crate ifft 0.11.0...
[INFO] checking ifft-0.11.0 against try#4f260f0f20b3133d20cfb50353c0221943af5796+rustflags=-Dunmustuse_in_always_ok for pr-148577
[INFO] extracting crate ifft 0.11.0 into /workspace/builds/worker-3-tc2/source
[INFO] started tweaking crates.io crate ifft 0.11.0
[INFO] finished tweaking crates.io crate ifft 0.11.0
[INFO] tweaked toml for crates.io crate ifft 0.11.0 written to /workspace/builds/worker-3-tc2/source/Cargo.toml
[INFO] validating manifest of crates.io crate ifft 0.11.0 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] crate crates.io crate ifft 0.11.0 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] 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] 07a7c42c96aef2b38bb22b84985c05c39cf3b838d587c7779c7e9d3e0d8edafe
[INFO] running `Command { std: "docker" "start" "-a" "07a7c42c96aef2b38bb22b84985c05c39cf3b838d587c7779c7e9d3e0d8edafe", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "07a7c42c96aef2b38bb22b84985c05c39cf3b838d587c7779c7e9d3e0d8edafe", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "07a7c42c96aef2b38bb22b84985c05c39cf3b838d587c7779c7e9d3e0d8edafe", kill_on_drop: false }`
[INFO] [stdout] 07a7c42c96aef2b38bb22b84985c05c39cf3b838d587c7779c7e9d3e0d8edafe
[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] f9d29700b8daa97d241b19493eb0de75f884944bf3c4f76f9151ad29dee23b07
[INFO] running `Command { std: "docker" "start" "-a" "f9d29700b8daa97d241b19493eb0de75f884944bf3c4f76f9151ad29dee23b07", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.104
[INFO] [stderr]    Compiling memchr v2.3.4
[INFO] [stderr]    Compiling log v0.4.14
[INFO] [stderr]    Compiling num-traits v0.2.14
[INFO] [stderr]    Compiling crossbeam-utils v0.7.2
[INFO] [stderr]    Compiling num-integer v0.1.44
[INFO] [stderr]    Compiling memoffset v0.6.4
[INFO] [stderr]     Checking regex-syntax v0.6.22
[INFO] [stderr]    Compiling libdbus-sys v0.2.1
[INFO] [stderr]     Checking thread_local v1.1.2
[INFO] [stderr]    Compiling syn v1.0.60
[INFO] [stderr]    Compiling serde v1.0.123
[INFO] [stderr]    Compiling quote v1.0.8
[INFO] [stderr]    Compiling serde_derive v1.0.123
[INFO] [stderr]     Checking textwrap v0.11.0
[INFO] [stderr]     Checking anymap v0.12.1
[INFO] [stderr]     Checking ansi_term v0.11.0
[INFO] [stderr]     Checking aho-corasick v0.7.15
[INFO] [stderr]     Checking bstr v0.2.14
[INFO] [stderr]     Checking crossbeam-channel v0.4.4
[INFO] [stderr]     Checking inotify-sys v0.1.5
[INFO] [stderr]     Checking dirs-sys v0.3.5
[INFO] [stderr]     Checking time v0.1.44
[INFO] [stderr]     Checking mio v0.7.7
[INFO] [stderr]     Checking dbus v0.6.5
[INFO] [stderr]     Checking filetime v0.2.14
[INFO] [stderr]     Checking atty v0.2.14
[INFO] [stderr]     Checking nix v0.23.0
[INFO] [stderr]     Checking clap v2.33.3
[INFO] [stderr]     Checking dirs v2.0.2
[INFO] [stderr]     Checking inotify v0.9.2
[INFO] [stderr]     Checking shellexpand v1.1.1
[INFO] [stderr]     Checking chrono v0.4.19
[INFO] [stderr]     Checking notify v5.0.0-pre.5
[INFO] [stderr]     Checking regex v1.4.3
[INFO] [stderr]     Checking notify-rust v3.6.3
[INFO] [stderr]     Checking globset v0.4.6
[INFO] [stderr]     Checking ignore v0.4.17
[INFO] [stderr]     Checking toml v0.4.10
[INFO] [stderr]     Checking ifft v0.11.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: field `after` is never read
[INFO] [stdout]    --> src/main.rs:499:5
[INFO] [stdout]     |
[INFO] [stdout] 491 | struct IfftRaw {
[INFO] [stdout]     |        ------- field in this struct
[INFO] [stdout] ...
[INFO] [stdout] 499 |     after: Option<String>,
[INFO] [stdout]     |     ^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `IfftRaw` 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: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stdout]    --> src/main.rs:537:15
[INFO] [stdout]     |
[INFO] [stdout] 537 |     fn filter(&self, relpath: &Path) -> FilterResult {
[INFO] [stdout]     |               ^^^^^                     ^^^^^^^^^^^^ the same lifetime is hidden here
[INFO] [stdout]     |               |
[INFO] [stdout]     |               the lifetime is elided here
[INFO] [stdout]     |
[INFO] [stdout]     = help: the same lifetime is referred to in inconsistent ways, making the signature confusing
[INFO] [stdout]     = note: `#[warn(mismatched_lifetime_syntaxes)]` on by default
[INFO] [stdout] help: use `'_` for type paths
[INFO] [stdout]     |
[INFO] [stdout] 537 |     fn filter(&self, relpath: &Path) -> FilterResult<'_> {
[INFO] [stdout]     |                                                     ++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<std::string::String, Infallible>
[INFO] [stdout]    --> src/main.rs:911:22
[INFO] [stdout]     |
[INFO] [stdout] 911 |     let watch_path = value_t!(matches, "WATCH-PATH", String).unwrap_or_else(|e| e.exit());
[INFO] [stdout]     |                      ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: requested on the command line with `-D unmustuse-in-always-ok`
[INFO] [stdout]     = note: this error originates in the macro `value_t` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<std::string::String, Infallible>
[INFO] [stdout]    --> src/main.rs:912:25
[INFO] [stdout]     |
[INFO] [stdout] 912 |     let on_start_name = value_t!(matches, "ON-START", String);
[INFO] [stdout]     |                         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this error originates in the macro `value_t` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<std::string::String, Infallible>
[INFO] [stdout]    --> src/main.rs:913:27
[INFO] [stdout]     |
[INFO] [stdout] 913 |     let run_before_name = value_t!(matches, "RUN-BEFORE", String);
[INFO] [stdout]     |                           ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this error originates in the macro `value_t` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `ifft` (bin "ifft") due to 3 previous errors; 2 warnings emitted
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stdout] warning: field `after` is never read
[INFO] [stdout]    --> src/main.rs:499:5
[INFO] [stdout]     |
[INFO] [stdout] 491 | struct IfftRaw {
[INFO] [stdout]     |        ------- field in this struct
[INFO] [stdout] ...
[INFO] [stdout] 499 |     after: Option<String>,
[INFO] [stdout]     |     ^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `IfftRaw` 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: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stdout]    --> src/main.rs:537:15
[INFO] [stdout]     |
[INFO] [stdout] 537 |     fn filter(&self, relpath: &Path) -> FilterResult {
[INFO] [stdout]     |               ^^^^^                     ^^^^^^^^^^^^ the same lifetime is hidden here
[INFO] [stdout]     |               |
[INFO] [stdout]     |               the lifetime is elided here
[INFO] [stdout]     |
[INFO] [stdout]     = help: the same lifetime is referred to in inconsistent ways, making the signature confusing
[INFO] [stdout]     = note: `#[warn(mismatched_lifetime_syntaxes)]` on by default
[INFO] [stdout] help: use `'_` for type paths
[INFO] [stdout]     |
[INFO] [stdout] 537 |     fn filter(&self, relpath: &Path) -> FilterResult<'_> {
[INFO] [stdout]     |                                                     ++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<std::string::String, Infallible>
[INFO] [stdout]    --> src/main.rs:911:22
[INFO] [stdout]     |
[INFO] [stdout] 911 |     let watch_path = value_t!(matches, "WATCH-PATH", String).unwrap_or_else(|e| e.exit());
[INFO] [stdout]     |                      ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: requested on the command line with `-D unmustuse-in-always-ok`
[INFO] [stdout]     = note: this error originates in the macro `value_t` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<std::string::String, Infallible>
[INFO] [stdout]    --> src/main.rs:912:25
[INFO] [stdout]     |
[INFO] [stdout] 912 |     let on_start_name = value_t!(matches, "ON-START", String);
[INFO] [stdout]     |                         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this error originates in the macro `value_t` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<std::string::String, Infallible>
[INFO] [stdout]    --> src/main.rs:913:27
[INFO] [stdout]     |
[INFO] [stdout] 913 |     let run_before_name = value_t!(matches, "RUN-BEFORE", String);
[INFO] [stdout]     |                           ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this error originates in the macro `value_t` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `ifft` (bin "ifft" test) due to 3 previous errors; 2 warnings emitted
[INFO] running `Command { std: "docker" "inspect" "f9d29700b8daa97d241b19493eb0de75f884944bf3c4f76f9151ad29dee23b07", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "f9d29700b8daa97d241b19493eb0de75f884944bf3c4f76f9151ad29dee23b07", kill_on_drop: false }`
[INFO] [stdout] f9d29700b8daa97d241b19493eb0de75f884944bf3c4f76f9151ad29dee23b07