[INFO] fetching crate mutf8 0.4.1...
[INFO] testing mutf8-0.4.1 against beta-2020-10-09 for beta-1.48-1
[INFO] extracting crate mutf8 0.4.1 into /workspace/builds/worker-11/source
[INFO] validating manifest of crates.io crate mutf8 0.4.1 on toolchain beta-2020-10-09
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2020-10-09" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking crates.io crate mutf8 0.4.1
[INFO] finished tweaking crates.io crate mutf8 0.4.1
[INFO] tweaked toml for crates.io crate mutf8 0.4.1 written to /workspace/builds/worker-11/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2020-10-09" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2020-10-09" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-11/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-11/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" "rustops/crates-build-env@sha256:d92eaeed33fa75130ca1ee6c8a01d1ffb62bac859dfdfb3450e3e5d1c0146529" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2020-10-09" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 643e099235097c6ea1e20007cd47ec3b82d7077c8e22e1e00db31a88f6a67c33
[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" "643e099235097c6ea1e20007cd47ec3b82d7077c8e22e1e00db31a88f6a67c33", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "643e099235097c6ea1e20007cd47ec3b82d7077c8e22e1e00db31a88f6a67c33", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "643e099235097c6ea1e20007cd47ec3b82d7077c8e22e1e00db31a88f6a67c33", kill_on_drop: false }`
[INFO] [stdout] 643e099235097c6ea1e20007cd47ec3b82d7077c8e22e1e00db31a88f6a67c33
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-11/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-11/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=warn" "-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" "rustops/crates-build-env@sha256:d92eaeed33fa75130ca1ee6c8a01d1ffb62bac859dfdfb3450e3e5d1c0146529" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2020-10-09" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 3a42120ddb54692938658fbaa1e86d471c6dc680e80b228f9fac2608515399a5
[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" "3a42120ddb54692938658fbaa1e86d471c6dc680e80b228f9fac2608515399a5", kill_on_drop: false }`
[INFO] [stderr]    Compiling mutf8 v0.4.1 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unnecessary parentheses around assigned value
[INFO] [stdout]   --> src/mutf8.rs:72:12
[INFO] [stdout]    |
[INFO] [stdout] 72 |             bits += ((byte4 as u32) & 0x3F);
[INFO] [stdout]    |                     ^^^^^^^^^^^^^^^^^^^^^^^ help: remove these parentheses
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_parens)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary `unsafe` block
[INFO] [stdout]    --> src/str.rs:194:16
[INFO] [stdout]     |
[INFO] [stdout] 194 |                 let data = unsafe { MString::from_mutf8(data) };
[INFO] [stdout]     |                            ^^^^^^ unnecessary `unsafe` block
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_unsafe)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary `unsafe` block
[INFO] [stdout]    --> src/str.rs:346:3
[INFO] [stdout]     |
[INFO] [stdout] 346 |         unsafe { MString::from_mutf8(&self.bytes) }
[INFO] [stdout]     |         ^^^^^^ unnecessary `unsafe` block
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 3 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.31s
[INFO] running `Command { std: "docker" "inspect" "3a42120ddb54692938658fbaa1e86d471c6dc680e80b228f9fac2608515399a5", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "3a42120ddb54692938658fbaa1e86d471c6dc680e80b228f9fac2608515399a5", kill_on_drop: false }`
[INFO] [stdout] 3a42120ddb54692938658fbaa1e86d471c6dc680e80b228f9fac2608515399a5
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-11/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-11/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=warn" "-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" "rustops/crates-build-env@sha256:d92eaeed33fa75130ca1ee6c8a01d1ffb62bac859dfdfb3450e3e5d1c0146529" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2020-10-09" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 647a82228d0715f0b09ba1284c0e3d59c9f84dcc5e320ce102b2ef24231e0a3e
[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" "647a82228d0715f0b09ba1284c0e3d59c9f84dcc5e320ce102b2ef24231e0a3e", kill_on_drop: false }`
[INFO] [stdout] warning: unnecessary parentheses around assigned value
[INFO] [stdout]   --> src/mutf8.rs:72:12
[INFO] [stdout]    |
[INFO] [stdout] 72 |             bits += ((byte4 as u32) & 0x3F);
[INFO] [stdout]    |                     ^^^^^^^^^^^^^^^^^^^^^^^ help: remove these parentheses
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_parens)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary `unsafe` block
[INFO] [stdout]    --> src/str.rs:194:16
[INFO] [stdout]     |
[INFO] [stdout] 194 |                 let data = unsafe { MString::from_mutf8(data) };
[INFO] [stdout]     |                            ^^^^^^ unnecessary `unsafe` block
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_unsafe)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary `unsafe` block
[INFO] [stdout]    --> src/str.rs:346:3
[INFO] [stdout]     |
[INFO] [stdout] 346 |         unsafe { MString::from_mutf8(&self.bytes) }
[INFO] [stdout]     |         ^^^^^^ unnecessary `unsafe` block
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 3 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]    Compiling mutf8 v0.4.1 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unnecessary parentheses around assigned value
[INFO] [stdout]   --> src/mutf8.rs:72:12
[INFO] [stdout]    |
[INFO] [stdout] 72 |             bits += ((byte4 as u32) & 0x3F);
[INFO] [stdout]    |                     ^^^^^^^^^^^^^^^^^^^^^^^ help: remove these parentheses
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_parens)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `mutf8::mutf8_to_utf8`
[INFO] [stdout]  --> tests/to_mutf8.rs:1:5
[INFO] [stdout]   |
[INFO] [stdout] 1 | use mutf8::mutf8_to_utf8;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary `unsafe` block
[INFO] [stdout]    --> src/str.rs:194:16
[INFO] [stdout]     |
[INFO] [stdout] 194 |                 let data = unsafe { MString::from_mutf8(data) };
[INFO] [stdout]     |                            ^^^^^^ unnecessary `unsafe` block
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_unsafe)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary `unsafe` block
[INFO] [stdout]    --> src/str.rs:346:3
[INFO] [stdout]     |
[INFO] [stdout] 346 |         unsafe { MString::from_mutf8(&self.bytes) }
[INFO] [stdout]     |         ^^^^^^ unnecessary `unsafe` block
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 3 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 1.09s
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "647a82228d0715f0b09ba1284c0e3d59c9f84dcc5e320ce102b2ef24231e0a3e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "647a82228d0715f0b09ba1284c0e3d59c9f84dcc5e320ce102b2ef24231e0a3e", kill_on_drop: false }`
[INFO] [stdout] 647a82228d0715f0b09ba1284c0e3d59c9f84dcc5e320ce102b2ef24231e0a3e
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-11/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-11/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=warn" "-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" "rustops/crates-build-env@sha256:d92eaeed33fa75130ca1ee6c8a01d1ffb62bac859dfdfb3450e3e5d1c0146529" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2020-10-09" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] dd652bd72dd735eb945a8dd54816e4296cd047eca3f97915ac0a8cd88c60f842
[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" "dd652bd72dd735eb945a8dd54816e4296cd047eca3f97915ac0a8cd88c60f842", kill_on_drop: false }`
[INFO] [stderr] warning: unnecessary parentheses around assigned value
[INFO] [stderr]   --> src/mutf8.rs:72:12
[INFO] [stderr]    |
[INFO] [stderr] 72 |             bits += ((byte4 as u32) & 0x3F);
[INFO] [stderr]    |                     ^^^^^^^^^^^^^^^^^^^^^^^ help: remove these parentheses
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_parens)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unnecessary `unsafe` block
[INFO] [stderr]    --> src/str.rs:194:16
[INFO] [stderr]     |
[INFO] [stderr] 194 |                 let data = unsafe { MString::from_mutf8(data) };
[INFO] [stderr]     |                            ^^^^^^ unnecessary `unsafe` block
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(unused_unsafe)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unnecessary `unsafe` block
[INFO] [stderr]    --> src/str.rs:346:3
[INFO] [stderr]     |
[INFO] [stderr] 346 |         unsafe { MString::from_mutf8(&self.bytes) }
[INFO] [stderr]     |         ^^^^^^ unnecessary `unsafe` block
[INFO] [stderr] 
[INFO] [stderr] warning: 3 warnings emitted
[INFO] [stderr] 
[INFO] [stderr] warning: unnecessary parentheses around assigned value
[INFO] [stderr]   --> src/mutf8.rs:72:12
[INFO] [stderr]    |
[INFO] [stderr] 72 |             bits += ((byte4 as u32) & 0x3F);
[INFO] [stderr]    |                     ^^^^^^^^^^^^^^^^^^^^^^^ help: remove these parentheses
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_parens)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unnecessary `unsafe` block
[INFO] [stderr]    --> src/str.rs:194:16
[INFO] [stderr]     |
[INFO] [stderr] 194 |                 let data = unsafe { MString::from_mutf8(data) };
[INFO] [stderr]     |                            ^^^^^^ unnecessary `unsafe` block
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(unused_unsafe)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `mutf8::mutf8_to_utf8`
[INFO] [stderr]  --> tests/to_mutf8.rs:1:5
[INFO] [stderr]   |
[INFO] [stderr] 1 | use mutf8::mutf8_to_utf8;
[INFO] [stderr]   |     ^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: 1 warning emitted
[INFO] [stderr] 
[INFO] [stderr] warning: unnecessary `unsafe` block
[INFO] [stderr]    --> src/str.rs:346:3
[INFO] [stderr]     |
[INFO] [stderr] 346 |         unsafe { MString::from_mutf8(&self.bytes) }
[INFO] [stderr]     |         ^^^^^^ unnecessary `unsafe` block
[INFO] [stderr] 
[INFO] [stderr] warning: 3 warnings emitted
[INFO] [stderr] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.02s
[INFO] [stderr]      Running /opt/rustwide/target/debug/deps/mutf8-b2548e9132276daf
[INFO] [stdout] 
[INFO] [stdout] running 0 tests
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
[INFO] [stdout] 
[INFO] [stderr]      Running /opt/rustwide/target/debug/deps/serde-890f678ce7c4fc1b
[INFO] [stdout] 
[INFO] [stdout] running 0 tests
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
[INFO] [stdout] 
[INFO] [stderr]      Running /opt/rustwide/target/debug/deps/to_mutf8-f25dd2575bd285ba
[INFO] [stdout] 
[INFO] [stdout] running 2 tests
[INFO] [stdout] test ascii_test ... ok
[INFO] [stdout] test nul_test ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 2 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
[INFO] [stdout] 
[INFO] [stderr]    Doc-tests mutf8
[INFO] [stderr] error[E0659]: `mutf8` is ambiguous (name vs any other name during import resolution)
[INFO] [stderr]   --> /opt/rustwide/workdir/src/lib.rs:12:9
[INFO] [stderr]    |
[INFO] [stderr] 12 | pub use mutf8::mutf8_to_utf8;
[INFO] [stderr]    |         ^^^^^ ambiguous name
[INFO] [stderr]    |
[INFO] [stderr]    = note: `mutf8` could refer to a crate passed with `--extern`
[INFO] [stderr]    = help: use `::mutf8` to refer to this crate unambiguously
[INFO] [stderr] note: `mutf8` could also refer to the module defined here
[INFO] [stderr]   --> /opt/rustwide/workdir/src/lib.rs:7:1
[INFO] [stderr]    |
[INFO] [stderr] 7  | mod mutf8;
[INFO] [stderr]    | ^^^^^^^^^^
[INFO] [stderr]    = help: use `crate::mutf8` to refer to this module unambiguously
[INFO] [stderr] 
[INFO] [stderr] error[E0659]: `mutf8` is ambiguous (name vs any other name during import resolution)
[INFO] [stderr]   --> /opt/rustwide/workdir/src/lib.rs:13:9
[INFO] [stderr]    |
[INFO] [stderr] 13 | pub use mutf8::utf8_to_mutf8;
[INFO] [stderr]    |         ^^^^^ ambiguous name
[INFO] [stderr]    |
[INFO] [stderr]    = note: `mutf8` could refer to a crate passed with `--extern`
[INFO] [stderr]    = help: use `::mutf8` to refer to this crate unambiguously
[INFO] [stderr] note: `mutf8` could also refer to the module defined here
[INFO] [stderr]   --> /opt/rustwide/workdir/src/lib.rs:7:1
[INFO] [stderr]    |
[INFO] [stderr] 7  | mod mutf8;
[INFO] [stderr]    | ^^^^^^^^^^
[INFO] [stderr]    = help: use `crate::mutf8` to refer to this module unambiguously
[INFO] [stderr] 
[INFO] [stderr] warning: unnecessary parentheses around assigned value
[INFO] [stderr]   --> /opt/rustwide/workdir/src/mutf8.rs:72:12
[INFO] [stderr]    |
[INFO] [stderr] 72 |             bits += ((byte4 as u32) & 0x3F);
[INFO] [stderr]    |                     ^^^^^^^^^^^^^^^^^^^^^^^ help: remove these parentheses
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_parens)]` on by default
[INFO] [stderr] 
[INFO] [stderr] error: aborting due to 2 previous errors; 1 warning emitted
[INFO] [stderr] 
[INFO] [stderr] For more information about this error, try `rustc --explain E0659`.
[INFO] [stderr] error: test failed, to rerun pass '--doc'
[INFO] running `Command { std: "docker" "inspect" "dd652bd72dd735eb945a8dd54816e4296cd047eca3f97915ac0a8cd88c60f842", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "dd652bd72dd735eb945a8dd54816e4296cd047eca3f97915ac0a8cd88c60f842", kill_on_drop: false }`
[INFO] [stdout] dd652bd72dd735eb945a8dd54816e4296cd047eca3f97915ac0a8cd88c60f842
