[INFO] fetching crate xml-no-std 0.8.19...
[INFO] building xml-no-std-0.8.19 against master#11663cd3bfefef7d34e8f0892c250bf698049392+rustflags=-Dtail-expr-drop-order for pr-134523
[INFO] extracting crate xml-no-std 0.8.19 into /workspace/builds/worker-6-tc1/source
[INFO] validating manifest of crates.io crate xml-no-std 0.8.19 on toolchain 11663cd3bfefef7d34e8f0892c250bf698049392
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+11663cd3bfefef7d34e8f0892c250bf698049392" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate xml-no-std 0.8.19
[INFO] finished tweaking crates.io crate xml-no-std 0.8.19
[INFO] tweaked toml for crates.io crate xml-no-std 0.8.19 written to /workspace/builds/worker-6-tc1/source/Cargo.toml
[INFO] crate crates.io crate xml-no-std 0.8.19 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" "+11663cd3bfefef7d34e8f0892c250bf698049392" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc1/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:f3a9d4ad9d972b27faf3965f35b62e55ba32bbce8f20bc8fe909558a86702fde" "/opt/rustwide/cargo-home/bin/cargo" "+11663cd3bfefef7d34e8f0892c250bf698049392" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] a008e1cb27511dc2c1c337116043dda45a1d7c98e96ed0cfb2e22b105550facc
[INFO] running `Command { std: "docker" "start" "-a" "a008e1cb27511dc2c1c337116043dda45a1d7c98e96ed0cfb2e22b105550facc", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "a008e1cb27511dc2c1c337116043dda45a1d7c98e96ed0cfb2e22b105550facc", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "a008e1cb27511dc2c1c337116043dda45a1d7c98e96ed0cfb2e22b105550facc", kill_on_drop: false }`
[INFO] [stdout] a008e1cb27511dc2c1c337116043dda45a1d7c98e96ed0cfb2e22b105550facc
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc1/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 -Dtail-expr-drop-order" "-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:f3a9d4ad9d972b27faf3965f35b62e55ba32bbce8f20bc8fe909558a86702fde" "/opt/rustwide/cargo-home/bin/cargo" "+11663cd3bfefef7d34e8f0892c250bf698049392" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 2e52a96e2c1a526b62c18749c118e3efdccc52e9047ae5e03fcd2c0c489a8f75
[INFO] running `Command { std: "docker" "start" "-a" "2e52a96e2c1a526b62c18749c118e3efdccc52e9047ae5e03fcd2c0c489a8f75", kill_on_drop: false }`
[INFO] [stderr]    Compiling xml-no-std v0.8.19 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `ToString`
[INFO] [stdout]  --> src/reader/error.rs:8:29
[INFO] [stdout]   |
[INFO] [stdout] 8 | use alloc::string::{String, ToString};
[INFO] [stdout]   |                             ^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `core::borrow::Borrow`
[INFO] [stdout]   --> src/reader/error.rs:10:5
[INFO] [stdout]    |
[INFO] [stdout] 10 | use core::borrow::Borrow;
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: elided lifetime has a name
[INFO] [stdout]    --> src/reader.rs:148:52
[INFO] [stdout]     |
[INFO] [stdout] 144 | impl<'a> EventReader<'a, core::slice::Iter<'a, u8>> {
[INFO] [stdout]     |      -- lifetime `'a` declared here
[INFO] [stdout] ...
[INFO] [stdout] 148 |     pub fn from_str(source: &'a str) -> EventReader<core::slice::Iter<'a, u8>> {
[INFO] [stdout]     |                                                    ^ this elided lifetime gets resolved as `'a`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(elided_named_lifetimes)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `core::fmt::Write`
[INFO] [stdout]  --> src/writer/emitter.rs:4:5
[INFO] [stdout]   |
[INFO] [stdout] 4 | use core::fmt::Write;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `reason`
[INFO] [stdout]    --> src/reader/error.rs:166:18
[INFO] [stdout]     |
[INFO] [stdout] 166 |             Utf8(reason) => "UTF8 Error",
[INFO] [stdout]     |                  ^^^^^^ help: if this is intentional, prefix it with an underscore: `_reason`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `core::result::Result` that must be used
[INFO] [stdout]    --> src/writer/emitter.rs:379:9
[INFO] [stdout]     |
[INFO] [stdout] 379 |         self.check_document_started(target);
[INFO] [stdout]     |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout]     = note: `#[warn(unused_must_use)]` on by default
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]     |
[INFO] [stdout] 379 |         let _ = self.check_document_started(target);
[INFO] [stdout]     |         +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 0.80s
[INFO] running `Command { std: "docker" "inspect" "2e52a96e2c1a526b62c18749c118e3efdccc52e9047ae5e03fcd2c0c489a8f75", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "2e52a96e2c1a526b62c18749c118e3efdccc52e9047ae5e03fcd2c0c489a8f75", kill_on_drop: false }`
[INFO] [stdout] 2e52a96e2c1a526b62c18749c118e3efdccc52e9047ae5e03fcd2c0c489a8f75
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc1/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 -Dtail-expr-drop-order" "-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:f3a9d4ad9d972b27faf3965f35b62e55ba32bbce8f20bc8fe909558a86702fde" "/opt/rustwide/cargo-home/bin/cargo" "+11663cd3bfefef7d34e8f0892c250bf698049392" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] c041bd95a4703289e187fbcae4d9fff7bb2fbd8089b69f2309ff565b71abfd8b
[INFO] running `Command { std: "docker" "start" "-a" "c041bd95a4703289e187fbcae4d9fff7bb2fbd8089b69f2309ff565b71abfd8b", kill_on_drop: false }`
[INFO] [stdout] warning: unused import: `ToString`
[INFO] [stdout]  --> src/reader/error.rs:8:29
[INFO] [stdout]   |
[INFO] [stdout] 8 | use alloc::string::{String, ToString};
[INFO] [stdout]   |                             ^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `core::borrow::Borrow`
[INFO] [stdout]   --> src/reader/error.rs:10:5
[INFO] [stdout]    |
[INFO] [stdout] 10 | use core::borrow::Borrow;
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]    Compiling xml-no-std v0.8.19 (/opt/rustwide/workdir)
[INFO] [stdout] warning: elided lifetime has a name
[INFO] [stdout]    --> src/reader.rs:148:52
[INFO] [stdout]     |
[INFO] [stdout] 144 | impl<'a> EventReader<'a, core::slice::Iter<'a, u8>> {
[INFO] [stdout]     |      -- lifetime `'a` declared here
[INFO] [stdout] ...
[INFO] [stdout] 148 |     pub fn from_str(source: &'a str) -> EventReader<core::slice::Iter<'a, u8>> {
[INFO] [stdout]     |                                                    ^ this elided lifetime gets resolved as `'a`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(elided_named_lifetimes)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `core::fmt::Write`
[INFO] [stdout]  --> src/writer/emitter.rs:4:5
[INFO] [stdout]   |
[INFO] [stdout] 4 | use core::fmt::Write;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `reason`
[INFO] [stdout]    --> src/reader/error.rs:166:18
[INFO] [stdout]     |
[INFO] [stdout] 166 |             Utf8(reason) => "UTF8 Error",
[INFO] [stdout]     |                  ^^^^^^ help: if this is intentional, prefix it with an underscore: `_reason`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `core::result::Result` that must be used
[INFO] [stdout]    --> src/writer/emitter.rs:379:9
[INFO] [stdout]     |
[INFO] [stdout] 379 |         self.check_document_started(target);
[INFO] [stdout]     |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout]     = note: `#[warn(unused_must_use)]` on by default
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]     |
[INFO] [stdout] 379 |         let _ = self.check_document_started(target);
[INFO] [stdout]     |         +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `ToString`
[INFO] [stdout]  --> src/reader/error.rs:8:29
[INFO] [stdout]   |
[INFO] [stdout] 8 | use alloc::string::{String, ToString};
[INFO] [stdout]   |                             ^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `core::borrow::Borrow`
[INFO] [stdout]   --> src/reader/error.rs:10:5
[INFO] [stdout]    |
[INFO] [stdout] 10 | use core::borrow::Borrow;
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: elided lifetime has a name
[INFO] [stdout]    --> src/reader.rs:148:52
[INFO] [stdout]     |
[INFO] [stdout] 144 | impl<'a> EventReader<'a, core::slice::Iter<'a, u8>> {
[INFO] [stdout]     |      -- lifetime `'a` declared here
[INFO] [stdout] ...
[INFO] [stdout] 148 |     pub fn from_str(source: &'a str) -> EventReader<core::slice::Iter<'a, u8>> {
[INFO] [stdout]     |                                                    ^ this elided lifetime gets resolved as `'a`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(elided_named_lifetimes)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `CharReadError`, `CharReader`, and `Encoding`
[INFO] [stdout]    --> src/util.rs:210:17
[INFO] [stdout]     |
[INFO] [stdout] 210 |     use super::{CharReadError, CharReader, Encoding};
[INFO] [stdout]     |                 ^^^^^^^^^^^^^  ^^^^^^^^^^  ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `core::fmt::Write`
[INFO] [stdout]  --> src/writer/emitter.rs:4:5
[INFO] [stdout]   |
[INFO] [stdout] 4 | use core::fmt::Write;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `reason`
[INFO] [stdout]    --> src/reader/error.rs:166:18
[INFO] [stdout]     |
[INFO] [stdout] 166 |             Utf8(reason) => "UTF8 Error",
[INFO] [stdout]     |                  ^^^^^^ help: if this is intentional, prefix it with an underscore: `_reason`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `disable_errors` is never used
[INFO] [stdout]    --> src/reader/lexer.rs:275:21
[INFO] [stdout]     |
[INFO] [stdout] 244 | impl Lexer {
[INFO] [stdout]     | ---------- method in this implementation
[INFO] [stdout] ...
[INFO] [stdout] 275 |     #[cfg(test)] fn disable_errors(&mut self) { self.skip_errors = true; }
[INFO] [stdout]     |                     ^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `std::result::Result` that must be used
[INFO] [stdout]    --> src/writer/emitter.rs:379:9
[INFO] [stdout]     |
[INFO] [stdout] 379 |         self.check_document_started(target);
[INFO] [stdout]     |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout]     = note: `#[warn(unused_must_use)]` on by default
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]     |
[INFO] [stdout] 379 |         let _ = self.check_document_started(target);
[INFO] [stdout]     |         +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.58s
[INFO] running `Command { std: "docker" "inspect" "c041bd95a4703289e187fbcae4d9fff7bb2fbd8089b69f2309ff565b71abfd8b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "c041bd95a4703289e187fbcae4d9fff7bb2fbd8089b69f2309ff565b71abfd8b", kill_on_drop: false }`
[INFO] [stdout] c041bd95a4703289e187fbcae4d9fff7bb2fbd8089b69f2309ff565b71abfd8b