[INFO] fetching crate entry 0.2.1... [INFO] checking entry-0.2.1 against try#c387b04bf028733cd561d62128c8a5eee4bc1458+rustflags=-Dtail_expr_drop_order for pr-130930 [INFO] extracting crate entry 0.2.1 into /workspace/builds/worker-2-tc2/source [INFO] validating manifest of crates.io crate entry 0.2.1 on toolchain c387b04bf028733cd561d62128c8a5eee4bc1458 [INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+c387b04bf028733cd561d62128c8a5eee4bc1458" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }` [INFO] started tweaking crates.io crate entry 0.2.1 [INFO] finished tweaking crates.io crate entry 0.2.1 [INFO] tweaked toml for crates.io crate entry 0.2.1 written to /workspace/builds/worker-2-tc2/source/Cargo.toml [INFO] crate crates.io crate entry 0.2.1 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" "+c387b04bf028733cd561d62128c8a5eee4bc1458" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }` [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-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@sha256:6252d7ea7fb8caaf7af6d800c5fb250a9cd862b9a7f9508afb3c54fa7fe1102e" "/opt/rustwide/cargo-home/bin/cargo" "+c387b04bf028733cd561d62128c8a5eee4bc1458" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }` [INFO] [stdout] 02dc47356492cd0d8b2bcf9268c1b35763c961ee5daf0d50060e6614711cc51e [INFO] running `Command { std: "docker" "start" "-a" "02dc47356492cd0d8b2bcf9268c1b35763c961ee5daf0d50060e6614711cc51e", kill_on_drop: false }` [INFO] running `Command { std: "docker" "inspect" "02dc47356492cd0d8b2bcf9268c1b35763c961ee5daf0d50060e6614711cc51e", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "02dc47356492cd0d8b2bcf9268c1b35763c961ee5daf0d50060e6614711cc51e", kill_on_drop: false }` [INFO] [stdout] 02dc47356492cd0d8b2bcf9268c1b35763c961ee5daf0d50060e6614711cc51e [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-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 -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@sha256:6252d7ea7fb8caaf7af6d800c5fb250a9cd862b9a7f9508afb3c54fa7fe1102e" "/opt/rustwide/cargo-home/bin/cargo" "+c387b04bf028733cd561d62128c8a5eee4bc1458" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }` [INFO] [stdout] 92e1f9e47700eff79855a5b2a371a1c8593b0e10093c0643b8da5000329c200a [INFO] running `Command { std: "docker" "start" "-a" "92e1f9e47700eff79855a5b2a371a1c8593b0e10093c0643b8da5000329c200a", kill_on_drop: false }` [INFO] [stderr] Compiling proc-macro2 v1.0.26 [INFO] [stderr] Compiling unicode-xid v0.2.1 [INFO] [stderr] Compiling libc v0.2.93 [INFO] [stderr] Compiling syn v1.0.70 [INFO] [stderr] Compiling serde_derive v1.0.125 [INFO] [stderr] Compiling serde v1.0.125 [INFO] [stderr] Compiling ryu v1.0.5 [INFO] [stderr] Compiling log v0.4.14 [INFO] [stderr] Compiling failure_derive v0.1.8 [INFO] [stderr] Compiling serde_json v1.0.64 [INFO] [stderr] Checking gimli v0.23.0 [INFO] [stderr] Compiling proc-macro-error-attr v1.0.4 [INFO] [stderr] Compiling num-traits v0.2.14 [INFO] [stderr] Compiling proc-macro-error v1.0.4 [INFO] [stderr] Compiling num-integer v0.1.44 [INFO] [stderr] Checking rustc-demangle v0.1.18 [INFO] [stderr] Checking unicode-width v0.1.8 [INFO] [stderr] Checking itoa v0.4.7 [INFO] [stderr] Checking predicates-core v1.0.2 [INFO] [stderr] Checking object v0.23.0 [INFO] [stderr] Compiling unicode-segmentation v1.7.1 [INFO] [stderr] Compiling doc-comment v0.3.3 [INFO] [stderr] Compiling escargot v0.5.2 [INFO] [stderr] Checking textwrap v0.11.0 [INFO] [stderr] Checking once_cell v1.7.2 [INFO] [stderr] Checking treeline v0.1.0 [INFO] [stderr] Checking cfg-if v0.1.10 [INFO] [stderr] Checking difference v2.0.0 [INFO] [stderr] Checking ansi_term v0.11.0 [INFO] [stderr] Checking directories v0.10.0 [INFO] [stderr] Checking predicates-tree v1.0.2 [INFO] [stderr] Compiling heck v0.3.2 [INFO] [stderr] Checking predicates v1.0.7 [INFO] [stderr] Compiling quote v1.0.9 [INFO] [stderr] Checking atty v0.2.14 [INFO] [stderr] Checking dirs-sys v0.3.6 [INFO] [stderr] Checking time v0.1.43 [INFO] [stderr] Checking dirs-sys-next v0.1.2 [INFO] [stderr] Checking wait-timeout v0.2.0 [INFO] [stderr] Checking clap v2.33.3 [INFO] [stderr] Checking dirs v2.0.2 [INFO] [stderr] Checking directories-next v2.0.0 [INFO] [stderr] Checking shellexpand v1.1.1 [INFO] [stderr] Checking chrono v0.4.19 [INFO] [stderr] Checking addr2line v0.14.1 [INFO] [stderr] Checking backtrace v0.3.57 [INFO] [stderr] Compiling synstructure v0.12.4 [INFO] [stderr] Compiling structopt-derive v0.4.14 [INFO] [stderr] Checking failure v0.1.8 [INFO] [stderr] Checking exitfailure v0.5.1 [INFO] [stderr] Checking structopt v0.3.21 [INFO] [stderr] Checking toml v0.4.10 [INFO] [stderr] Checking confy v0.3.1 [INFO] [stderr] Checking assert_cmd v0.12.2 [INFO] [stderr] Checking entry v0.2.1 (/opt/rustwide/workdir) [INFO] [stdout] warning: unused `Result` that must be used [INFO] [stdout] --> src/main.rs:160:9 [INFO] [stdout] | [INFO] [stdout] 160 | file.write_all(data.as_bytes()); [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] 160 | let _ = file.write_all(data.as_bytes()); [INFO] [stdout] | +++++++ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused `Result` that must be used [INFO] [stdout] --> src/main.rs:168:9 [INFO] [stdout] | [INFO] [stdout] 168 | file.read_to_string(&mut buf); [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: this `Result` may be an `Err` variant, which should be handled [INFO] [stdout] help: use `let _ = ...` to ignore the resulting value [INFO] [stdout] | [INFO] [stdout] 168 | let _ = file.read_to_string(&mut buf); [INFO] [stdout] | +++++++ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused `Result` that must be used [INFO] [stdout] --> src/main.rs:175:5 [INFO] [stdout] | [INFO] [stdout] 175 | io::stdin().read_line(&mut s); [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: this `Result` may be an `Err` variant, which should be handled [INFO] [stdout] help: use `let _ = ...` to ignore the resulting value [INFO] [stdout] | [INFO] [stdout] 175 | let _ = io::stdin().read_line(&mut s); [INFO] [stdout] | +++++++ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: 3 warnings emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused `Result` that must be used [INFO] [stdout] --> src/main.rs:160:9 [INFO] [stdout] | [INFO] [stdout] 160 | file.write_all(data.as_bytes()); [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] 160 | let _ = file.write_all(data.as_bytes()); [INFO] [stdout] | +++++++ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused `Result` that must be used [INFO] [stdout] --> src/main.rs:168:9 [INFO] [stdout] | [INFO] [stdout] 168 | file.read_to_string(&mut buf); [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: this `Result` may be an `Err` variant, which should be handled [INFO] [stdout] help: use `let _ = ...` to ignore the resulting value [INFO] [stdout] | [INFO] [stdout] 168 | let _ = file.read_to_string(&mut buf); [INFO] [stdout] | +++++++ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused `Result` that must be used [INFO] [stdout] --> src/main.rs:175:5 [INFO] [stdout] | [INFO] [stdout] 175 | io::stdin().read_line(&mut s); [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: this `Result` may be an `Err` variant, which should be handled [INFO] [stdout] help: use `let _ = ...` to ignore the resulting value [INFO] [stdout] | [INFO] [stdout] 175 | let _ = io::stdin().read_line(&mut s); [INFO] [stdout] | +++++++ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: 3 warnings emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stderr] Finished `dev` profile [unoptimized + debuginfo] target(s) in 13.97s [INFO] running `Command { std: "docker" "inspect" "92e1f9e47700eff79855a5b2a371a1c8593b0e10093c0643b8da5000329c200a", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "92e1f9e47700eff79855a5b2a371a1c8593b0e10093c0643b8da5000329c200a", kill_on_drop: false }` [INFO] [stdout] 92e1f9e47700eff79855a5b2a371a1c8593b0e10093c0643b8da5000329c200a