[INFO] fetching crate utf8-io 0.19.1...
[INFO] building utf8-io-0.19.1 against master#11663cd3bfefef7d34e8f0892c250bf698049392+rustflags=-Dtail-expr-drop-order for pr-134523
[INFO] extracting crate utf8-io 0.19.1 into /workspace/builds/worker-2-tc1/source
[INFO] validating manifest of crates.io crate utf8-io 0.19.1 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 utf8-io 0.19.1
[INFO] finished tweaking crates.io crate utf8-io 0.19.1
[INFO] tweaked toml for crates.io crate utf8-io 0.19.1 written to /workspace/builds/worker-2-tc1/source/Cargo.toml
[INFO] crate crates.io crate utf8-io 0.19.1 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]     Updating crates.io index
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded io-extras v0.18.0
[INFO] [stderr]   Downloaded io-lifetimes v2.0.1
[INFO] [stderr]   Downloaded layered-io v0.23.0
[INFO] [stderr]   Downloaded terminal-io v0.19.1
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-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] 7753ca447456190981761812de260eff9f60f8a7cf3708dfc224fb6247a0039b
[INFO] running `Command { std: "docker" "start" "-a" "7753ca447456190981761812de260eff9f60f8a7cf3708dfc224fb6247a0039b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "7753ca447456190981761812de260eff9f60f8a7cf3708dfc224fb6247a0039b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "7753ca447456190981761812de260eff9f60f8a7cf3708dfc224fb6247a0039b", kill_on_drop: false }`
[INFO] [stdout] 7753ca447456190981761812de260eff9f60f8a7cf3708dfc224fb6247a0039b
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-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] 280e5075a1eb783e76fe47f4f67353edb66f6f4d3013f921d022c9600c42f2df
[INFO] running `Command { std: "docker" "start" "-a" "280e5075a1eb783e76fe47f4f67353edb66f6f4d3013f921d022c9600c42f2df", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.147
[INFO] [stderr]    Compiling io-lifetimes v2.0.1
[INFO] [stderr]    Compiling io-extras v0.18.0
[INFO] [stderr]    Compiling duplex v0.16.0
[INFO] [stderr]    Compiling os_pipe v1.1.4
[INFO] [stderr]    Compiling utf8-io v0.19.1 (/opt/rustwide/workdir)
[INFO] [stdout] warning: methods `inner` and `into_inner` are never used
[INFO] [stdout]   --> src/utf8_input.rs:14:8
[INFO] [stdout]    |
[INFO] [stdout] 12 | pub(crate) trait Utf8ReaderInternals<Inner: Read>: Read {
[INFO] [stdout]    |                  ------------------- methods in this trait
[INFO] [stdout] 13 |     fn impl_(&mut self) -> &mut Utf8Input;
[INFO] [stdout] 14 |     fn inner(&self) -> &Inner;
[INFO] [stdout]    |        ^^^^^
[INFO] [stdout] 15 |     fn inner_mut(&mut self) -> &mut Inner;
[INFO] [stdout] 16 |     fn into_inner(self) -> Inner;
[INFO] [stdout]    |        ^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `inner` is never used
[INFO] [stdout]   --> src/utf8_output.rs:11:8
[INFO] [stdout]    |
[INFO] [stdout] 9  | pub(crate) trait Utf8WriterInternals<Inner: Write>: Write {
[INFO] [stdout]    |                  ------------------- method in this trait
[INFO] [stdout] 10 |     fn impl_(&mut self) -> &mut Utf8Output;
[INFO] [stdout] 11 |     fn inner(&self) -> &Inner;
[INFO] [stdout]    |        ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 0.70s
[INFO] running `Command { std: "docker" "inspect" "280e5075a1eb783e76fe47f4f67353edb66f6f4d3013f921d022c9600c42f2df", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "280e5075a1eb783e76fe47f4f67353edb66f6f4d3013f921d022c9600c42f2df", kill_on_drop: false }`
[INFO] [stdout] 280e5075a1eb783e76fe47f4f67353edb66f6f4d3013f921d022c9600c42f2df
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-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] 0d2f50bde923acf461d08e710b6fe8e9e8b9a0999c3675d446565f09f2a229ef
[INFO] running `Command { std: "docker" "start" "-a" "0d2f50bde923acf461d08e710b6fe8e9e8b9a0999c3675d446565f09f2a229ef", kill_on_drop: false }`
[INFO] [stderr]    Compiling anyhow v1.0.71
[INFO] [stderr]    Compiling layered-io v0.23.0
[INFO] [stdout] warning: methods `inner` and `into_inner` are never used
[INFO] [stdout]   --> src/utf8_input.rs:14:8
[INFO] [stdout]    |
[INFO] [stdout] 12 | pub(crate) trait Utf8ReaderInternals<Inner: Read>: Read {
[INFO] [stdout]    |                  ------------------- methods in this trait
[INFO] [stdout] 13 |     fn impl_(&mut self) -> &mut Utf8Input;
[INFO] [stdout] 14 |     fn inner(&self) -> &Inner;
[INFO] [stdout]    |        ^^^^^
[INFO] [stdout] 15 |     fn inner_mut(&mut self) -> &mut Inner;
[INFO] [stdout] 16 |     fn into_inner(self) -> Inner;
[INFO] [stdout]    |        ^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `inner` is never used
[INFO] [stdout]   --> src/utf8_output.rs:11:8
[INFO] [stdout]    |
[INFO] [stdout] 9  | pub(crate) trait Utf8WriterInternals<Inner: Write>: Write {
[INFO] [stdout]    |                  ------------------- method in this trait
[INFO] [stdout] 10 |     fn impl_(&mut self) -> &mut Utf8Output;
[INFO] [stdout] 11 |     fn inner(&self) -> &Inner;
[INFO] [stdout]    |        ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]    Compiling utf8-io v0.19.1 (/opt/rustwide/workdir)
[INFO] [stdout] warning: methods `inner` and `into_inner` are never used
[INFO] [stdout]   --> src/utf8_input.rs:14:8
[INFO] [stdout]    |
[INFO] [stdout] 12 | pub(crate) trait Utf8ReaderInternals<Inner: Read>: Read {
[INFO] [stdout]    |                  ------------------- methods in this trait
[INFO] [stdout] 13 |     fn impl_(&mut self) -> &mut Utf8Input;
[INFO] [stdout] 14 |     fn inner(&self) -> &Inner;
[INFO] [stdout]    |        ^^^^^
[INFO] [stdout] 15 |     fn inner_mut(&mut self) -> &mut Inner;
[INFO] [stdout] 16 |     fn into_inner(self) -> Inner;
[INFO] [stdout]    |        ^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `inner` is never used
[INFO] [stdout]   --> src/utf8_output.rs:11:8
[INFO] [stdout]    |
[INFO] [stdout] 9  | pub(crate) trait Utf8WriterInternals<Inner: Write>: Write {
[INFO] [stdout]    |                  ------------------- method in this trait
[INFO] [stdout] 10 |     fn impl_(&mut self) -> &mut Utf8Output;
[INFO] [stdout] 11 |     fn inner(&self) -> &Inner;
[INFO] [stdout]    |        ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.65s
[INFO] running `Command { std: "docker" "inspect" "0d2f50bde923acf461d08e710b6fe8e9e8b9a0999c3675d446565f09f2a229ef", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "0d2f50bde923acf461d08e710b6fe8e9e8b9a0999c3675d446565f09f2a229ef", kill_on_drop: false }`
[INFO] [stdout] 0d2f50bde923acf461d08e710b6fe8e9e8b9a0999c3675d446565f09f2a229ef