[INFO] fetching crate wcstr 0.1.4...
[INFO] testing wcstr-0.1.4 against master#8534be72fc3b9c5f2f2dc4e4ee7b651a008e9a3e for pr-74409
[INFO] extracting crate wcstr 0.1.4 into /workspace/builds/worker-8/source
[INFO] validating manifest of crates.io crate wcstr 0.1.4 on toolchain 8534be72fc3b9c5f2f2dc4e4ee7b651a008e9a3e
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+8534be72fc3b9c5f2f2dc4e4ee7b651a008e9a3e" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking crates.io crate wcstr 0.1.4
[INFO] finished tweaking crates.io crate wcstr 0.1.4
[INFO] tweaked toml for crates.io crate wcstr 0.1.4 written to /workspace/builds/worker-8/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+8534be72fc3b9c5f2f2dc4e4ee7b651a008e9a3e" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+8534be72fc3b9c5f2f2dc4e4ee7b651a008e9a3e" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/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" "MAP_USER_ID=0" "-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" "--network" "none" "rustops/crates-build-env@sha256:38e1b949b06cde1964af550a6e548bd9b2b2ea170003ae122f8fc0886596cc07" "/opt/rustwide/cargo-home/bin/cargo" "+8534be72fc3b9c5f2f2dc4e4ee7b651a008e9a3e" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] a1833ec37407f12d39eba6447070856ab804a726dcb0d2b233394b8e3395bd32
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "a1833ec37407f12d39eba6447070856ab804a726dcb0d2b233394b8e3395bd32", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "a1833ec37407f12d39eba6447070856ab804a726dcb0d2b233394b8e3395bd32", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "a1833ec37407f12d39eba6447070856ab804a726dcb0d2b233394b8e3395bd32", kill_on_drop: false }`
[INFO] [stdout] a1833ec37407f12d39eba6447070856ab804a726dcb0d2b233394b8e3395bd32
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/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" "MAP_USER_ID=0" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--network" "none" "rustops/crates-build-env@sha256:38e1b949b06cde1964af550a6e548bd9b2b2ea170003ae122f8fc0886596cc07" "/opt/rustwide/cargo-home/bin/cargo" "+8534be72fc3b9c5f2f2dc4e4ee7b651a008e9a3e" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 35f568938b54a55e836e2c4541c8c253e1f64e5048b230acdf5adab4b890a1af
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "35f568938b54a55e836e2c4541c8c253e1f64e5048b230acdf5adab4b890a1af", kill_on_drop: false }`
[INFO] [stderr]    Compiling wcstr v0.1.4 (/opt/rustwide/workdir)
[INFO] [stdout] error[E0433]: failed to resolve: could not find `windows` in `os`
[INFO] [stdout]  --> src/wcstr.rs:4:16
[INFO] [stdout]   |
[INFO] [stdout] 4 | use ::std::os::windows::ffi::{OsStringExt, OsStrExt};
[INFO] [stdout]   |                ^^^^^^^ could not find `windows` in `os`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0433]: failed to resolve: could not find `windows` in `os`
[INFO] [stdout]  --> src/wcstring.rs:4:16
[INFO] [stdout]   |
[INFO] [stdout] 4 | use ::std::os::windows::ffi::OsStrExt;
[INFO] [stdout]   |                ^^^^^^^ could not find `windows` in `os`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stdout]    --> src/wcstr.rs:168:9
[INFO] [stdout]     |
[INFO] [stdout] 168 |         try!(write!(f, "\""));
[INFO] [stdout]     |         ^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(deprecated)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stdout]    --> src/wcstr.rs:173:21
[INFO] [stdout]     |
[INFO] [stdout] 173 |                     try!(f.write_char(c));
[INFO] [stdout]     |                     ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stdout]    --> src/wcstr.rs:177:17
[INFO] [stdout]     |
[INFO] [stdout] 177 |                 try!(write!(f, "\\u{{{:X}}}", w));
[INFO] [stdout]     |                 ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0599]: no function or associated item named `from_wide` found for struct `std::ffi::OsString` in the current scope
[INFO] [stdout]    --> src/wcstr.rs:103:19
[INFO] [stdout]     |
[INFO] [stdout] 103 |         OsString::from_wide(self.to_slice())
[INFO] [stdout]     |                   ^^^^^^^^^ function or associated item not found in `std::ffi::OsString`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0599]: no method named `encode_wide` found for reference `&std::ffi::OsStr` in the current scope
[INFO] [stdout]    --> src/wcstr.rs:146:28
[INFO] [stdout]     |
[INFO] [stdout] 146 |         let mut s_iter = s.encode_wide();
[INFO] [stdout]     |                            ^^^^^^^^^^^ method not found in `&std::ffi::OsStr`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0599]: no method named `encode_wide` found for reference `&std::ffi::OsStr` in the current scope
[INFO] [stdout]    --> src/wcstr.rs:162:51
[INFO] [stdout]     |
[INFO] [stdout] 162 |         self.to_slice().iter().zip(other.as_ref().encode_wide()).all(|(&a, b)| a == b)
[INFO] [stdout]     |                                                   ^^^^^^^^^^^ method not found in `&std::ffi::OsStr`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0599]: no method named `encode_wide` found for reference `&std::ffi::OsStr` in the current scope
[INFO] [stdout]    --> src/wcstring.rs:110:38
[INFO] [stdout]     |
[INFO] [stdout] 110 |         let v: Vec<u16> = s.as_ref().encode_wide().collect();
[INFO] [stdout]     |                                      ^^^^^^^^^^^ method not found in `&std::ffi::OsStr`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0599]: no method named `encode_wide` found for reference `&std::ffi::OsStr` in the current scope
[INFO] [stdout]    --> src/wcstring.rs:123:38
[INFO] [stdout]     |
[INFO] [stdout] 123 |         let v: Vec<u16> = s.as_ref().encode_wide().collect();
[INFO] [stdout]     |                                      ^^^^^^^^^^^ method not found in `&std::ffi::OsStr`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0599]: no method named `encode_wide` found for reference `&std::ffi::OsStr` in the current scope
[INFO] [stdout]    --> src/wcstring.rs:268:29
[INFO] [stdout]     |
[INFO] [stdout] 268 |         self.inner.extend(s.encode_wide().take_while(|&w| { not_nuled = w != 0; not_nuled }));
[INFO] [stdout]     |                             ^^^^^^^^^^^ method not found in `&std::ffi::OsStr`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0599]: no method named `encode_wide` found for reference `&std::ffi::OsStr` in the current scope
[INFO] [stdout]    --> src/wcstring.rs:289:29
[INFO] [stdout]     |
[INFO] [stdout] 289 |         self.inner.extend(s.encode_wide());
[INFO] [stdout]     |                             ^^^^^^^^^^^ method not found in `&std::ffi::OsStr`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0599]: no method named `encode_wide` found for reference `&std::ffi::OsStr` in the current scope
[INFO] [stdout]    --> src/wcstring.rs:310:29
[INFO] [stdout]     |
[INFO] [stdout] 310 |         self.inner.extend(s.encode_wide().take_while(|&w| { not_nuled = w != 0; not_nuled }));
[INFO] [stdout]     |                             ^^^^^^^^^^^ method not found in `&std::ffi::OsStr`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 10 previous errors; 3 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] Some errors have detailed explanations: E0433, E0599.
[INFO] [stdout] 
[INFO] [stdout] For more information about an error, try `rustc --explain E0433`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `wcstr`.
[INFO] [stderr] 
[INFO] [stderr] To learn more, run the command again with --verbose.
[INFO] running `Command { std: "docker" "inspect" "35f568938b54a55e836e2c4541c8c253e1f64e5048b230acdf5adab4b890a1af", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "35f568938b54a55e836e2c4541c8c253e1f64e5048b230acdf5adab4b890a1af", kill_on_drop: false }`
[INFO] [stdout] 35f568938b54a55e836e2c4541c8c253e1f64e5048b230acdf5adab4b890a1af