[INFO] fetching crate pcell 0.7.1... [INFO] checking pcell-0.7.1 against try#7014e13d5becc920d4bea3cd87942c8a13d359bf+rustflags=-Dtail_expr_drop_order for pr-129864 [INFO] extracting crate pcell 0.7.1 into /workspace/builds/worker-4-tc2/source [INFO] validating manifest of crates.io crate pcell 0.7.1 on toolchain 7014e13d5becc920d4bea3cd87942c8a13d359bf [INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+7014e13d5becc920d4bea3cd87942c8a13d359bf" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }` [INFO] started tweaking crates.io crate pcell 0.7.1 [INFO] finished tweaking crates.io crate pcell 0.7.1 [INFO] tweaked toml for crates.io crate pcell 0.7.1 written to /workspace/builds/worker-4-tc2/source/Cargo.toml [INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+7014e13d5becc920d4bea3cd87942c8a13d359bf" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }` [INFO] [stderr] Updating crates.io index [INFO] [stderr] Locking 36 packages to latest compatible versions [INFO] [stderr] Adding base64 v0.7.0 (available: v0.22.1) [INFO] [stderr] Adding bitflags v1.3.2 (available: v2.6.0) [INFO] [stderr] Adding clap v2.34.0 (available: v4.5.18) [INFO] [stderr] Adding csv v0.15.0 (available: v1.3.0) [INFO] [stderr] Adding encode_unicode v0.3.6 (available: v1.0.0) [INFO] [stderr] Adding hermit-abi v0.1.19 (available: v0.4.0) [INFO] [stderr] Adding lazy_static v0.2.11 (available: v1.5.0) [INFO] [stderr] Adding md5 v0.3.8 (available: v0.7.0) [INFO] [stderr] Adding memchr v1.0.2 (available: v2.7.4) [INFO] [stderr] Adding prettytable-rs v0.6.7 (available: v0.10.0) [INFO] [stderr] Adding safemem v0.2.0 (available: v0.3.3) [INFO] [stderr] Adding snap v0.2.5 (available: v1.1.1) [INFO] [stderr] Adding strsim v0.8.0 (available: v0.11.1) [INFO] [stderr] Adding term v0.4.6 (available: v1.0.0) [INFO] [stderr] Adding textwrap v0.11.0 (available: v0.16.1) [INFO] [stderr] Adding toml v0.4.10 (available: v0.8.19) [INFO] [stderr] Adding unicode-width v0.1.14 (available: v0.2.0) [INFO] [stderr] Adding winapi v0.2.8 (available: v0.3.9) [INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+7014e13d5becc920d4bea3cd87942c8a13d359bf" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }` [INFO] [stderr] warning: no edition set: defaulting to the 2015 edition while the latest is 2021 [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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:ceb6ea022f8a89cebbe621bb4987e73a935bd40dfbb726f832cfff4742a5b95a" "/opt/rustwide/cargo-home/bin/cargo" "+7014e13d5becc920d4bea3cd87942c8a13d359bf" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }` [INFO] [stdout] 2527403f9e05ab2921176738cf0ca600699abe7100646787a1d026c4ed940372 [INFO] running `Command { std: "docker" "start" "-a" "2527403f9e05ab2921176738cf0ca600699abe7100646787a1d026c4ed940372", kill_on_drop: false }` [INFO] running `Command { std: "docker" "inspect" "2527403f9e05ab2921176738cf0ca600699abe7100646787a1d026c4ed940372", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "2527403f9e05ab2921176738cf0ca600699abe7100646787a1d026c4ed940372", kill_on_drop: false }` [INFO] [stdout] 2527403f9e05ab2921176738cf0ca600699abe7100646787a1d026c4ed940372 [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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:ceb6ea022f8a89cebbe621bb4987e73a935bd40dfbb726f832cfff4742a5b95a" "/opt/rustwide/cargo-home/bin/cargo" "+7014e13d5becc920d4bea3cd87942c8a13d359bf" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }` [INFO] [stdout] 425d42ebd32b3acb8f63060fa9cbf85b55d1c81042b87598745a52fd6bb78ad8 [INFO] running `Command { std: "docker" "start" "-a" "425d42ebd32b3acb8f63060fa9cbf85b55d1c81042b87598745a52fd6bb78ad8", kill_on_drop: false }` [INFO] [stderr] warning: no edition set: defaulting to the 2015 edition while the latest is 2021 [INFO] [stderr] Compiling libc v0.2.159 [INFO] [stderr] Compiling proc-macro2 v1.0.86 [INFO] [stderr] Checking byteorder v1.5.0 [INFO] [stderr] Compiling serde v1.0.210 [INFO] [stderr] Checking unicode-width v0.1.14 [INFO] [stderr] Checking rustc-serialize v0.3.25 [INFO] [stderr] Checking encode_unicode v0.3.6 [INFO] [stderr] Checking term v0.4.6 [INFO] [stderr] Checking safemem v0.2.0 [INFO] [stderr] Checking lazy_static v0.2.11 [INFO] [stderr] Checking md5 v0.3.8 [INFO] [stderr] Checking textwrap v0.11.0 [INFO] [stderr] Checking base64 v0.7.0 [INFO] [stderr] Checking snap v0.2.5 [INFO] [stderr] Compiling quote v1.0.37 [INFO] [stderr] Compiling syn v2.0.77 [INFO] [stderr] Checking atty v0.2.14 [INFO] [stderr] Checking memchr v1.0.2 [INFO] [stderr] Checking clap v2.34.0 [INFO] [stderr] Checking csv v0.15.0 [INFO] [stderr] Checking prettytable-rs v0.6.7 [INFO] [stderr] Compiling serde_derive v1.0.210 [INFO] [stderr] Checking toml v0.4.10 [INFO] [stderr] Checking pcell v0.7.1 (/opt/rustwide/workdir) [INFO] [stdout] warning: use of deprecated method `std::error::Error::description`: use the Display impl or to_string() [INFO] [stdout] --> src/main.rs:79:74 [INFO] [stdout] | [INFO] [stdout] 79 | Err(e) => println!("Failed to read database: {} {}", why.description(), e.description()), [INFO] [stdout] | ^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(deprecated)]` on by default [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/main.rs:79:91 [INFO] [stdout] | [INFO] [stdout] 79 | Err(e) => println!("Failed to read database: {} {}", why.description(), e.description()), [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/main.rs:95:60 [INFO] [stdout] | [INFO] [stdout] 95 | println!("Failed to serialize database: {}", e.description()); [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/main.rs:159:67 [INFO] [stdout] | [INFO] [stdout] 159 | Err(e) => println!("Failed to create file: {}", e.description()), [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/main.rs:79:74 [INFO] [stdout] | [INFO] [stdout] 79 | Err(e) => println!("Failed to read database: {} {}", why.description(), e.description()), [INFO] [stdout] | ^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(deprecated)]` on by default [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/main.rs:79:91 [INFO] [stdout] | [INFO] [stdout] 79 | Err(e) => println!("Failed to read database: {} {}", why.description(), e.description()), [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/main.rs:95:60 [INFO] [stdout] | [INFO] [stdout] 95 | println!("Failed to serialize database: {}", e.description()); [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/main.rs:159:67 [INFO] [stdout] | [INFO] [stdout] 159 | Err(e) => println!("Failed to create file: {}", e.description()), [INFO] [stdout] | ^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused return value of `Result::::is_ok` that must be used [INFO] [stdout] --> src/main.rs:101:13 [INFO] [stdout] | [INFO] [stdout] 101 | / write!( [INFO] [stdout] 102 | | file, [INFO] [stdout] 103 | | "{}", [INFO] [stdout] 104 | | db_strings.as_str() [INFO] [stdout] 105 | | ).is_ok(); [INFO] [stdout] | |_____________________^ [INFO] [stdout] | [INFO] [stdout] = note: if you intended to assert that this is ok, consider `.unwrap()` instead [INFO] [stdout] = note: `#[warn(unused_must_use)]` on by default [INFO] [stdout] help: use `let _ = ...` to ignore the resulting value [INFO] [stdout] | [INFO] [stdout] 101 | let _ = write!( [INFO] [stdout] | +++++++ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: 5 warnings emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused return value of `Result::::is_ok` that must be used [INFO] [stdout] --> src/main.rs:101:13 [INFO] [stdout] | [INFO] [stdout] 101 | / write!( [INFO] [stdout] 102 | | file, [INFO] [stdout] 103 | | "{}", [INFO] [stdout] 104 | | db_strings.as_str() [INFO] [stdout] 105 | | ).is_ok(); [INFO] [stdout] | |_____________________^ [INFO] [stdout] | [INFO] [stdout] = note: if you intended to assert that this is ok, consider `.unwrap()` instead [INFO] [stdout] = note: `#[warn(unused_must_use)]` on by default [INFO] [stdout] help: use `let _ = ...` to ignore the resulting value [INFO] [stdout] | [INFO] [stdout] 101 | let _ = write!( [INFO] [stdout] | +++++++ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: 5 warnings emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stderr] Finished `dev` profile [unoptimized + debuginfo] target(s) in 7.40s [INFO] [stderr] warning: the following packages contain code that will be rejected by a future version of Rust: snap v0.2.5 [INFO] [stderr] note: to see what the problems were, use the option `--future-incompat-report`, or run `cargo report future-incompatibilities --id 1` [INFO] running `Command { std: "docker" "inspect" "425d42ebd32b3acb8f63060fa9cbf85b55d1c81042b87598745a52fd6bb78ad8", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "425d42ebd32b3acb8f63060fa9cbf85b55d1c81042b87598745a52fd6bb78ad8", kill_on_drop: false }` [INFO] [stdout] 425d42ebd32b3acb8f63060fa9cbf85b55d1c81042b87598745a52fd6bb78ad8