[INFO] fetching crate tnetstring 0.2.0...
[INFO] checking tnetstring-0.2.0 against master#e6e4f7ed1589e03bc2f6c5931c1a72e7947e8682 for beta-170-4
[INFO] extracting crate tnetstring 0.2.0 into /workspace/builds/worker-5-tc2/source
[INFO] validating manifest of crates.io crate tnetstring 0.2.0 on toolchain e6e4f7ed1589e03bc2f6c5931c1a72e7947e8682
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+e6e4f7ed1589e03bc2f6c5931c1a72e7947e8682" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate tnetstring 0.2.0
[INFO] finished tweaking crates.io crate tnetstring 0.2.0
[INFO] tweaked toml for crates.io crate tnetstring 0.2.0 written to /workspace/builds/worker-5-tc2/source/Cargo.toml
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" __CARGO_TEST_CHANNEL_OVERRIDE_DO_NOT_USE_THIS="nightly" "/workspace/cargo-home/bin/cargo" "+e6e4f7ed1589e03bc2f6c5931c1a72e7947e8682" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+e6e4f7ed1589e03bc2f6c5931c1a72e7947e8682" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-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@sha256:19e73879b68f455e41552ea35293514db52ea292d993f571636dbffedb77a1ee" "/opt/rustwide/cargo-home/bin/cargo" "+e6e4f7ed1589e03bc2f6c5931c1a72e7947e8682" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] b82a24230d65708f746ce56d0d5ef3cea605c6f1142e1f30c6c0e09de707ab06
[INFO] running `Command { std: "docker" "start" "-a" "b82a24230d65708f746ce56d0d5ef3cea605c6f1142e1f30c6c0e09de707ab06", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "b82a24230d65708f746ce56d0d5ef3cea605c6f1142e1f30c6c0e09de707ab06", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "b82a24230d65708f746ce56d0d5ef3cea605c6f1142e1f30c6c0e09de707ab06", kill_on_drop: false }`
[INFO] [stdout] b82a24230d65708f746ce56d0d5ef3cea605c6f1142e1f30c6c0e09de707ab06
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-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" "-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@sha256:19e73879b68f455e41552ea35293514db52ea292d993f571636dbffedb77a1ee" "/opt/rustwide/cargo-home/bin/cargo" "+e6e4f7ed1589e03bc2f6c5931c1a72e7947e8682" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 1729733f07af08273be603b666bfa019a9df733b49a3bd633c7ba230f4e36b4e
[INFO] running `Command { std: "docker" "start" "-a" "1729733f07af08273be603b666bfa019a9df733b49a3bd633c7ba230f4e36b4e", kill_on_drop: false }`
[INFO] [stderr]    Compiling serde v1.0.163
[INFO] [stderr]     Checking maplit v1.0.2
[INFO] [stderr]    Compiling syn v2.0.18
[INFO] [stderr]    Compiling serde_derive v1.0.163
[INFO] [stderr]     Checking tnetstring v0.2.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: use of deprecated method `std::error::Error::description`: use the Display impl or to_string()
[INFO] [stdout]   --> src/error.rs:50:48
[INFO] [stdout]    |
[INFO] [stdout] 50 |         formatter.write_str(std::error::Error::description(self))
[INFO] [stdout]    |                                                ^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(deprecated)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0283]: type annotations needed
[INFO] [stdout]   --> src/ser.rs:49:18
[INFO] [stdout]    |
[INFO] [stdout] 49 |         .map(|x| String::from(x.as_ref()))
[INFO] [stdout]    |                  ^^^^^^^^^^^^ cannot infer type for reference `&_`
[INFO] [stdout]    |
[INFO] [stdout]    = note: multiple `impl`s satisfying `std::string::String: From<&_>` found in the `alloc` crate:
[INFO] [stdout]            - impl<> From<&std::string::String> for std::string::String;
[INFO] [stdout]            - impl<> From<&str> for std::string::String;
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0283]: type annotations needed
[INFO] [stdout]   --> src/ser.rs:49:33
[INFO] [stdout]    |
[INFO] [stdout] 49 |         .map(|x| String::from(x.as_ref()))
[INFO] [stdout]    |                                 ^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: multiple `impl`s satisfying `std::string::String: AsRef<_>` found in the following crates: `alloc`, `std`:
[INFO] [stdout]            - impl AsRef<OsStr> for std::string::String;
[INFO] [stdout]            - impl AsRef<Path> for std::string::String;
[INFO] [stdout]            - impl AsRef<[u8]> for std::string::String;
[INFO] [stdout]            - impl AsRef<str> for std::string::String;
[INFO] [stdout] help: try using a fully qualified path to specify the expected types
[INFO] [stdout]    |
[INFO] [stdout] 49 |         .map(|x| String::from(<std::string::String as AsRef<T>>::as_ref(x)))
[INFO] [stdout]    |                               ++++++++++++++++++++++++++++++++++++++++++ ~
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated method `std::error::Error::description`: use the Display impl or to_string()
[INFO] [stdout]   --> src/error.rs:50:48
[INFO] [stdout]    |
[INFO] [stdout] 50 |         formatter.write_str(std::error::Error::description(self))
[INFO] [stdout]    |                                                ^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(deprecated)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 2 previous errors; 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0283`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `tnetstring` (lib) due to 3 previous errors; 1 warning emitted
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stdout] error[E0283]: type annotations needed
[INFO] [stdout]   --> src/ser.rs:49:18
[INFO] [stdout]    |
[INFO] [stdout] 49 |         .map(|x| String::from(x.as_ref()))
[INFO] [stdout]    |                  ^^^^^^^^^^^^ cannot infer type for reference `&_`
[INFO] [stdout]    |
[INFO] [stdout]    = note: multiple `impl`s satisfying `std::string::String: From<&_>` found in the `alloc` crate:
[INFO] [stdout]            - impl<> From<&std::string::String> for std::string::String;
[INFO] [stdout]            - impl<> From<&str> for std::string::String;
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0283]: type annotations needed
[INFO] [stdout]   --> src/ser.rs:49:33
[INFO] [stdout]    |
[INFO] [stdout] 49 |         .map(|x| String::from(x.as_ref()))
[INFO] [stdout]    |                                 ^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: multiple `impl`s satisfying `std::string::String: AsRef<_>` found in the following crates: `alloc`, `std`:
[INFO] [stdout]            - impl AsRef<OsStr> for std::string::String;
[INFO] [stdout]            - impl AsRef<Path> for std::string::String;
[INFO] [stdout]            - impl AsRef<[u8]> for std::string::String;
[INFO] [stdout]            - impl AsRef<str> for std::string::String;
[INFO] [stdout] help: try using a fully qualified path to specify the expected types
[INFO] [stdout]    |
[INFO] [stdout] 49 |         .map(|x| String::from(<std::string::String as AsRef<T>>::as_ref(x)))
[INFO] [stdout]    |                               ++++++++++++++++++++++++++++++++++++++++++ ~
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 2 previous errors; 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0283`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `tnetstring` (lib test) due to 3 previous errors; 1 warning emitted
[INFO] running `Command { std: "docker" "inspect" "1729733f07af08273be603b666bfa019a9df733b49a3bd633c7ba230f4e36b4e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "1729733f07af08273be603b666bfa019a9df733b49a3bd633c7ba230f4e36b4e", kill_on_drop: false }`
[INFO] [stdout] 1729733f07af08273be603b666bfa019a9df733b49a3bd633c7ba230f4e36b4e
