[INFO] fetching crate yason 0.0.2... [INFO] checking yason-0.0.2 against try#7014e13d5becc920d4bea3cd87942c8a13d359bf+rustflags=-Dtail_expr_drop_order for pr-129864 [INFO] extracting crate yason 0.0.2 into /workspace/builds/worker-5-tc2/source [INFO] validating manifest of crates.io crate yason 0.0.2 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 yason 0.0.2 [INFO] finished tweaking crates.io crate yason 0.0.2 [INFO] tweaked toml for crates.io crate yason 0.0.2 written to /workspace/builds/worker-5-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 14 packages to latest compatible versions [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] Blocking waiting for file lock on package cache [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-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] 06193db9fdfa0d8bdc8b6e0fe345d75f726f1f0b7f1240eeb48ebb07f24017ce [INFO] running `Command { std: "docker" "start" "-a" "06193db9fdfa0d8bdc8b6e0fe345d75f726f1f0b7f1240eeb48ebb07f24017ce", kill_on_drop: false }` [INFO] running `Command { std: "docker" "inspect" "06193db9fdfa0d8bdc8b6e0fe345d75f726f1f0b7f1240eeb48ebb07f24017ce", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "06193db9fdfa0d8bdc8b6e0fe345d75f726f1f0b7f1240eeb48ebb07f24017ce", kill_on_drop: false }` [INFO] [stdout] 06193db9fdfa0d8bdc8b6e0fe345d75f726f1f0b7f1240eeb48ebb07f24017ce [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-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] 6a7e28934480919f674e2857c2e986a32650bc5f96862464301708607503bb1f [INFO] running `Command { std: "docker" "start" "-a" "6a7e28934480919f674e2857c2e986a32650bc5f96862464301708607503bb1f", kill_on_drop: false }` [INFO] [stderr] Compiling serde v1.0.210 [INFO] [stderr] Compiling serde_json v1.0.128 [INFO] [stderr] Checking stack-buf v0.1.6 [INFO] [stderr] Checking itoa v1.0.11 [INFO] [stderr] Checking memchr v2.7.4 [INFO] [stderr] Checking ryu v1.0.18 [INFO] [stderr] Checking bencher v0.1.5 [INFO] [stderr] Checking decimal-rs v0.1.43 [INFO] [stderr] Checking bincode v1.3.3 [INFO] [stderr] Checking yason v0.0.2 (/opt/rustwide/workdir) [INFO] [stdout] warning: an associated function with this name may be added to the standard library in the future [INFO] [stdout] --> src/builder/array.rs:187:21 [INFO] [stdout] | [INFO] [stdout] 187 | let bytes = Vec::try_with_capacity(DEFAULT_SIZE)?; [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = warning: once this associated item is added to the standard library, the ambiguity may cause an error or change in behavior! [INFO] [stdout] = note: for more information, see issue #48919 [INFO] [stdout] = help: call with fully qualified syntax `VecExt::try_with_capacity(...)` to keep using the current method [INFO] [stdout] = note: `#[warn(unstable_name_collisions)]` on by default [INFO] [stdout] help: add `#![feature(try_with_capacity)]` to the crate attributes to enable `Vec::::try_with_capacity` [INFO] [stdout] --> src/lib.rs:181:1 [INFO] [stdout] | [INFO] [stdout] 181 + #![feature(try_with_capacity)] [INFO] [stdout] | [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: an associated function with this name may be added to the standard library in the future [INFO] [stdout] --> src/builder/object.rs:258:21 [INFO] [stdout] | [INFO] [stdout] 258 | let bytes = Vec::try_with_capacity(DEFAULT_SIZE)?; [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = warning: once this associated item is added to the standard library, the ambiguity may cause an error or change in behavior! [INFO] [stdout] = note: for more information, see issue #48919 [INFO] [stdout] = help: call with fully qualified syntax `VecExt::try_with_capacity(...)` to keep using the current method [INFO] [stdout] help: add `#![feature(try_with_capacity)]` to the crate attributes to enable `Vec::::try_with_capacity` [INFO] [stdout] --> src/lib.rs:181:1 [INFO] [stdout] | [INFO] [stdout] 181 + #![feature(try_with_capacity)] [INFO] [stdout] | [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: an associated function with this name may be added to the standard library in the future [INFO] [stdout] --> src/builder/array.rs:187:21 [INFO] [stdout] | [INFO] [stdout] 187 | let bytes = Vec::try_with_capacity(DEFAULT_SIZE)?; [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = warning: once this associated item is added to the standard library, the ambiguity may cause an error or change in behavior! [INFO] [stdout] = note: for more information, see issue #48919 [INFO] [stdout] = help: call with fully qualified syntax `VecExt::try_with_capacity(...)` to keep using the current method [INFO] [stdout] = note: `#[warn(unstable_name_collisions)]` on by default [INFO] [stdout] help: add `#![feature(try_with_capacity)]` to the crate attributes to enable `Vec::::try_with_capacity` [INFO] [stdout] --> src/lib.rs:181:1 [INFO] [stdout] | [INFO] [stdout] 181 + #![feature(try_with_capacity)] [INFO] [stdout] | [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: an associated function with this name may be added to the standard library in the future [INFO] [stdout] --> src/builder/object.rs:258:21 [INFO] [stdout] | [INFO] [stdout] 258 | let bytes = Vec::try_with_capacity(DEFAULT_SIZE)?; [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = warning: once this associated item is added to the standard library, the ambiguity may cause an error or change in behavior! [INFO] [stdout] = note: for more information, see issue #48919 [INFO] [stdout] = help: call with fully qualified syntax `VecExt::try_with_capacity(...)` to keep using the current method [INFO] [stdout] help: add `#![feature(try_with_capacity)]` to the crate attributes to enable `Vec::::try_with_capacity` [INFO] [stdout] --> src/lib.rs:181:1 [INFO] [stdout] | [INFO] [stdout] 181 + #![feature(try_with_capacity)] [INFO] [stdout] | [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: method `push_i32` is never used [INFO] [stdout] --> src/vec.rs:15:8 [INFO] [stdout] | [INFO] [stdout] 11 | pub trait VecExt: Sized { [INFO] [stdout] | ------ method in this trait [INFO] [stdout] ... [INFO] [stdout] 15 | fn push_i32(&mut self, val: i32); [INFO] [stdout] | ^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(dead_code)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: 3 warnings emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: method `push_i32` is never used [INFO] [stdout] --> src/vec.rs:15:8 [INFO] [stdout] | [INFO] [stdout] 11 | pub trait VecExt: Sized { [INFO] [stdout] | ------ method in this trait [INFO] [stdout] ... [INFO] [stdout] 15 | fn push_i32(&mut self, val: i32); [INFO] [stdout] | ^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(dead_code)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: 3 warnings emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stderr] Finished `dev` profile [unoptimized + debuginfo] target(s) in 7.70s [INFO] running `Command { std: "docker" "inspect" "6a7e28934480919f674e2857c2e986a32650bc5f96862464301708607503bb1f", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "6a7e28934480919f674e2857c2e986a32650bc5f96862464301708607503bb1f", kill_on_drop: false }` [INFO] [stdout] 6a7e28934480919f674e2857c2e986a32650bc5f96862464301708607503bb1f