[INFO] fetching crate encoding-next 0.3.0...
[INFO] building encoding-next-0.3.0 against master#11663cd3bfefef7d34e8f0892c250bf698049392+rustflags=-Dtail-expr-drop-order for pr-134523
[INFO] extracting crate encoding-next 0.3.0 into /workspace/builds/worker-7-tc1/source
[INFO] validating manifest of crates.io crate encoding-next 0.3.0 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 encoding-next 0.3.0
[INFO] finished tweaking crates.io crate encoding-next 0.3.0
[INFO] tweaked toml for crates.io crate encoding-next 0.3.0 written to /workspace/builds/worker-7-tc1/source/Cargo.toml
[INFO] crate crates.io crate encoding-next 0.3.0 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]     Updating crates.io index
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded encoding-next-index-singlebyte v1.20180106.0
[INFO] [stderr]   Downloaded encoding-next-index-japanese v1.20180106.0
[INFO] [stderr]   Downloaded encoding-next-types v0.2.0
[INFO] [stderr]   Downloaded encoding-next-index-korean v1.20180106.0
[INFO] [stderr]   Downloaded encoding-next-index-simpchinese v1.20180106.0
[INFO] [stderr]   Downloaded encoding-next-index-tradchinese v1.20180106.0
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-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] b7d070a3b5b231baa4e01f687af8481aeb6d4a2fc2b0bec7b26392dd3dd55bbd
[INFO] running `Command { std: "docker" "start" "-a" "b7d070a3b5b231baa4e01f687af8481aeb6d4a2fc2b0bec7b26392dd3dd55bbd", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "b7d070a3b5b231baa4e01f687af8481aeb6d4a2fc2b0bec7b26392dd3dd55bbd", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "b7d070a3b5b231baa4e01f687af8481aeb6d4a2fc2b0bec7b26392dd3dd55bbd", kill_on_drop: false }`
[INFO] [stdout] b7d070a3b5b231baa4e01f687af8481aeb6d4a2fc2b0bec7b26392dd3dd55bbd
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-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] ddaa16076cf42cef87719de65adeb9d2d63d2bc6330fa8053ff1727d9308ca2e
[INFO] running `Command { std: "docker" "start" "-a" "ddaa16076cf42cef87719de65adeb9d2d63d2bc6330fa8053ff1727d9308ca2e", kill_on_drop: false }`
[INFO] [stderr]    Compiling encoding-next-index-japanese v1.20180106.0
[INFO] [stderr]    Compiling encoding-next-index-korean v1.20180106.0
[INFO] [stderr]    Compiling encoding-next-index-simpchinese v1.20180106.0
[INFO] [stderr]    Compiling encoding-next-index-singlebyte v1.20180106.0
[INFO] [stderr]    Compiling encoding-next-index-tradchinese v1.20180106.0
[INFO] [stderr]    Compiling encoding-next-types v0.2.0
[INFO] [stderr]    Compiling encoding-next v0.3.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: field `data` is never read
[INFO] [stdout]   --> src/util.rs:68:9
[INFO] [stdout]    |
[INFO] [stdout] 58 | pub struct StatefulDecoderHelper<'a, St, Data: 'a> {
[INFO] [stdout]    |            --------------------- field in this struct
[INFO] [stdout] ...
[INFO] [stdout] 68 |     pub data: &'a Data,
[INFO] [stdout]    |         ^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 0.64s
[INFO] running `Command { std: "docker" "inspect" "ddaa16076cf42cef87719de65adeb9d2d63d2bc6330fa8053ff1727d9308ca2e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "ddaa16076cf42cef87719de65adeb9d2d63d2bc6330fa8053ff1727d9308ca2e", kill_on_drop: false }`
[INFO] [stdout] ddaa16076cf42cef87719de65adeb9d2d63d2bc6330fa8053ff1727d9308ca2e
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-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] 3ec54611ddd5e4db02cd76809853927497aac53a5a1d8216a4c63fd04274e4cc
[INFO] running `Command { std: "docker" "start" "-a" "3ec54611ddd5e4db02cd76809853927497aac53a5a1d8216a4c63fd04274e4cc", kill_on_drop: false }`
[INFO] [stderr]    Compiling encoding-next-types v0.2.0
[INFO] [stderr]    Compiling encoding-next-index-simpchinese v1.20180106.0
[INFO] [stderr]    Compiling encoding-next-index-singlebyte v1.20180106.0
[INFO] [stderr]    Compiling unicode-width v0.1.9
[INFO] [stderr]    Compiling encoding-next-index-korean v1.20180106.0
[INFO] [stderr]    Compiling encoding-next-index-tradchinese v1.20180106.0
[INFO] [stderr]    Compiling encoding-next-index-japanese v1.20180106.0
[INFO] [stderr]    Compiling getopts v0.2.21
[INFO] [stderr]    Compiling encoding-next v0.3.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: field `data` is never read
[INFO] [stdout]   --> src/util.rs:68:9
[INFO] [stdout]    |
[INFO] [stdout] 58 | pub struct StatefulDecoderHelper<'a, St, Data: 'a> {
[INFO] [stdout]    |            --------------------- field in this struct
[INFO] [stdout] ...
[INFO] [stdout] 68 |     pub data: &'a Data,
[INFO] [stdout]    |         ^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `data` is never read
[INFO] [stdout]   --> src/util.rs:68:9
[INFO] [stdout]    |
[INFO] [stdout] 58 | pub struct StatefulDecoderHelper<'a, St, Data: 'a> {
[INFO] [stdout]    |            --------------------- field in this struct
[INFO] [stdout] ...
[INFO] [stdout] 68 |     pub data: &'a Data,
[INFO] [stdout]    |         ^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: calls to `std::str::from_utf8` with a invalid literal always return an error
[INFO] [stdout]    --> src/codec/utf_8.rs:698:34
[INFO] [stdout]     |
[INFO] [stdout] 698 |         assert_eq!(from_utf8(s), str::from_utf8(s).ok());
[INFO] [stdout]     |                                  ^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]    ::: src/testutils.rs:335:39
[INFO] [stdout]     |
[INFO] [stdout] 335 | pub static INVALID_UTF8_TEXT: &[u8] = include_bytes!("examples/UTF-8-test.txt");
[INFO] [stdout]     |                                       ----------------------------------------- the literal was valid UTF-8 up to the 4440 bytes
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(invalid_from_utf8)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: calls to `std::str::from_utf8` with a invalid literal always return an error
[INFO] [stdout]    --> src/codec/utf_8.rs:815:45
[INFO] [stdout]     |
[INFO] [stdout] 815 |             bencher.iter(|| test::black_box(str::from_utf8(s)))
[INFO] [stdout]     |                                             ^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]    ::: src/testutils.rs:335:39
[INFO] [stdout]     |
[INFO] [stdout] 335 | pub static INVALID_UTF8_TEXT: &[u8] = include_bytes!("examples/UTF-8-test.txt");
[INFO] [stdout]     |                                       ----------------------------------------- the literal was valid UTF-8 up to the 4440 bytes
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `test` profile [optimized + debuginfo] target(s) in 4.73s
[INFO] running `Command { std: "docker" "inspect" "3ec54611ddd5e4db02cd76809853927497aac53a5a1d8216a4c63fd04274e4cc", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "3ec54611ddd5e4db02cd76809853927497aac53a5a1d8216a4c63fd04274e4cc", kill_on_drop: false }`
[INFO] [stdout] 3ec54611ddd5e4db02cd76809853927497aac53a5a1d8216a4c63fd04274e4cc