[INFO] fetching crate from-os-str 0.1.0... [INFO] checking from-os-str-0.1.0 against try#4f260f0f20b3133d20cfb50353c0221943af5796+rustflags=-Dunmustuse_in_always_ok for pr-148577 [INFO] extracting crate from-os-str 0.1.0 into /workspace/builds/worker-4-tc2/source [INFO] started tweaking crates.io crate from-os-str 0.1.0 [INFO] finished tweaking crates.io crate from-os-str 0.1.0 [INFO] tweaked toml for crates.io crate from-os-str 0.1.0 written to /workspace/builds/worker-4-tc2/source/Cargo.toml [INFO] validating manifest of crates.io crate from-os-str 0.1.0 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] 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-4-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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] 9e4edea176b7ad1e80003183ca328a12e6efb30bb52bc7c9ba2fc42173456629 [INFO] running `Command { std: "docker" "start" "-a" "9e4edea176b7ad1e80003183ca328a12e6efb30bb52bc7c9ba2fc42173456629", kill_on_drop: false }` [INFO] running `Command { std: "docker" "inspect" "9e4edea176b7ad1e80003183ca328a12e6efb30bb52bc7c9ba2fc42173456629", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "9e4edea176b7ad1e80003183ca328a12e6efb30bb52bc7c9ba2fc42173456629", kill_on_drop: false }` [INFO] [stdout] 9e4edea176b7ad1e80003183ca328a12e6efb30bb52bc7c9ba2fc42173456629 [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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] 99449a05b155391b1e3167e0273e7138fb632b369f1025675ebcf40f9f574fa3 [INFO] running `Command { std: "docker" "start" "-a" "99449a05b155391b1e3167e0273e7138fb632b369f1025675ebcf40f9f574fa3", kill_on_drop: false }` [INFO] [stderr] Checking from-os-str v0.1.0 (/opt/rustwide/workdir) [INFO] [stdout] error: this type will no longer be must used: Result [INFO] [stdout] --> src/lib.rs:229:57 [INFO] [stdout] | [INFO] [stdout] 229 | fn from_str(s: &str) -> Result { [INFO] [stdout] | _________________________________________________________^ [INFO] [stdout] 230 | | Ok(Foo("STR: ".to_string() + s)) [INFO] [stdout] 231 | | } [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 [INFO] [stdout] --> src/lib.rs:230:13 [INFO] [stdout] | [INFO] [stdout] 230 | Ok(Foo("STR: ".to_string() + s)) [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] error: this type will no longer be must used: Result<&std::ffi::OsStr, std::convert::Infallible> [INFO] [stdout] --> src/lib.rs:207:9 [INFO] [stdout] | [INFO] [stdout] 207 | (&&&&&&&&Wrap::<$typ>::new($name)).specialized() [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] ... [INFO] [stdout] 237 | let os_str_2 = try_from_os_str!(os_str as &OsStr).unwrap(); [INFO] [stdout] | ---------------------------------- in this macro invocation [INFO] [stdout] | [INFO] [stdout] = note: this error originates in the macro `try_from_os_str` (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<&Path, std::convert::Infallible> [INFO] [stdout] --> src/lib.rs:207:9 [INFO] [stdout] | [INFO] [stdout] 207 | (&&&&&&&&Wrap::<$typ>::new($name)).specialized() [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] ... [INFO] [stdout] 240 | let path = try_from_os_str!(os_str as &Path).unwrap(); [INFO] [stdout] | --------------------------------- in this macro invocation [INFO] [stdout] | [INFO] [stdout] = note: this error originates in the macro `try_from_os_str` (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 [INFO] [stdout] --> src/lib.rs:207:9 [INFO] [stdout] | [INFO] [stdout] 207 | (&&&&&&&&Wrap::<$typ>::new($name)).specialized() [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] ... [INFO] [stdout] 242 | let path = try_from_os_str!(os_str as PathBuf).unwrap(); [INFO] [stdout] | ----------------------------------- in this macro invocation [INFO] [stdout] | [INFO] [stdout] = note: this error originates in the macro `try_from_os_str` (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 [INFO] [stdout] --> src/lib.rs:207:9 [INFO] [stdout] | [INFO] [stdout] 207 | (&&&&&&&&Wrap::<$typ>::new($name)).specialized() [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] ... [INFO] [stdout] 253 | let foo = try_from_os_str!(os_str as Foo); [INFO] [stdout] | ------------------------------- in this macro invocation [INFO] [stdout] | [INFO] [stdout] = note: this error originates in the macro `try_from_os_str` (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 [INFO] [stdout] --> src/lib.rs:254:20 [INFO] [stdout] | [INFO] [stdout] 254 | assert_eq!(foo, Ok(Foo("OS: 123".to_owned()))); [INFO] [stdout] | ^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] error: this type will no longer be must used: Result [INFO] [stdout] --> src/lib.rs:254:25 [INFO] [stdout] | [INFO] [stdout] 254 | assert_eq!(foo, Ok(Foo("OS: 123".to_owned()))); [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] error: this type will no longer be must used: Result [INFO] [stdout] --> src/lib.rs:254:9 [INFO] [stdout] | [INFO] [stdout] 254 | assert_eq!(foo, Ok(Foo("OS: 123".to_owned()))); [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: this error originates in the macro `assert_eq` (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 [INFO] [stdout] --> src/lib.rs:254:9 [INFO] [stdout] | [INFO] [stdout] 254 | assert_eq!(foo, Ok(Foo("OS: 123".to_owned()))); [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: this error originates in the macro `assert_eq` (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 [INFO] [stdout] --> src/lib.rs:254:9 [INFO] [stdout] | [INFO] [stdout] 254 | assert_eq!(foo, Ok(Foo("OS: 123".to_owned()))); [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: this error originates in the macro `assert_eq` (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 [INFO] [stdout] --> src/lib.rs:254:9 [INFO] [stdout] | [INFO] [stdout] 254 | assert_eq!(foo, Ok(Foo("OS: 123".to_owned()))); [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: this error originates in the macro `assert_eq` (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::ffi::OsStr, std::convert::Infallible> [INFO] [stdout] --> src/lib.rs:207:9 [INFO] [stdout] | [INFO] [stdout] 207 | (&&&&&&&&Wrap::<$typ>::new($name)).specialized() [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] ... [INFO] [stdout] 262 | let os_str_2 = try_from_os_str!(os_str as &OsStr).unwrap(); [INFO] [stdout] | ---------------------------------- in this macro invocation [INFO] [stdout] | [INFO] [stdout] = note: this error originates in the macro `try_from_os_str` (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<&Path, std::convert::Infallible> [INFO] [stdout] --> src/lib.rs:207:9 [INFO] [stdout] | [INFO] [stdout] 207 | (&&&&&&&&Wrap::<$typ>::new($name)).specialized() [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] ... [INFO] [stdout] 265 | let path = try_from_os_str!(os_str as &Path).unwrap(); [INFO] [stdout] | --------------------------------- in this macro invocation [INFO] [stdout] | [INFO] [stdout] = note: this error originates in the macro `try_from_os_str` (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 [INFO] [stdout] --> src/lib.rs:207:9 [INFO] [stdout] | [INFO] [stdout] 207 | (&&&&&&&&Wrap::<$typ>::new($name)).specialized() [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] ... [INFO] [stdout] 267 | let path = try_from_os_str!(os_str as PathBuf).unwrap(); [INFO] [stdout] | ----------------------------------- in this macro invocation [INFO] [stdout] | [INFO] [stdout] = note: this error originates in the macro `try_from_os_str` (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 [INFO] [stdout] --> src/lib.rs:207:9 [INFO] [stdout] | [INFO] [stdout] 207 | (&&&&&&&&Wrap::<$typ>::new($name)).specialized() [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] ... [INFO] [stdout] 277 | let foo = try_from_os_str!(os_str as Foo); [INFO] [stdout] | ------------------------------- in this macro invocation [INFO] [stdout] | [INFO] [stdout] = note: this error originates in the macro `try_from_os_str` (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 [INFO] [stdout] --> src/lib.rs:278:20 [INFO] [stdout] | [INFO] [stdout] 278 | assert_eq!(foo, Ok(Foo("OS: ��".to_owned()))); [INFO] [stdout] | ^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] error: this type will no longer be must used: Result [INFO] [stdout] --> src/lib.rs:278:25 [INFO] [stdout] | [INFO] [stdout] 278 | assert_eq!(foo, Ok(Foo("OS: ��".to_owned()))); [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] error: this type will no longer be must used: Result [INFO] [stdout] --> src/lib.rs:278:9 [INFO] [stdout] | [INFO] [stdout] 278 | assert_eq!(foo, Ok(Foo("OS: ��".to_owned()))); [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: this error originates in the macro `assert_eq` (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 [INFO] [stdout] --> src/lib.rs:278:9 [INFO] [stdout] | [INFO] [stdout] 278 | assert_eq!(foo, Ok(Foo("OS: ��".to_owned()))); [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: this error originates in the macro `assert_eq` (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 [INFO] [stdout] --> src/lib.rs:278:9 [INFO] [stdout] | [INFO] [stdout] 278 | assert_eq!(foo, Ok(Foo("OS: ��".to_owned()))); [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: this error originates in the macro `assert_eq` (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 [INFO] [stdout] --> src/lib.rs:278:9 [INFO] [stdout] | [INFO] [stdout] 278 | assert_eq!(foo, Ok(Foo("OS: ��".to_owned()))); [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: this error originates in the macro `assert_eq` (in Nightly builds, run with -Z macro-backtrace for more info) [INFO] [stdout] [INFO] [stdout] [INFO] [stderr] error: could not compile `from-os-str` (lib test) due to 22 previous errors [INFO] running `Command { std: "docker" "inspect" "99449a05b155391b1e3167e0273e7138fb632b369f1025675ebcf40f9f574fa3", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "99449a05b155391b1e3167e0273e7138fb632b369f1025675ebcf40f9f574fa3", kill_on_drop: false }` [INFO] [stdout] 99449a05b155391b1e3167e0273e7138fb632b369f1025675ebcf40f9f574fa3