[INFO] fetching crate lets_expect_core 0.5.1...
[INFO] checking lets_expect_core-0.5.1 against master#ab869e094a907cc5d19b4080f22eccaf347f1f95 for pr-129604
[INFO] extracting crate lets_expect_core 0.5.1 into /workspace/builds/worker-4-tc1/source
[INFO] validating manifest of crates.io crate lets_expect_core 0.5.1 on toolchain ab869e094a907cc5d19b4080f22eccaf347f1f95
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+ab869e094a907cc5d19b4080f22eccaf347f1f95" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate lets_expect_core 0.5.1
[INFO] finished tweaking crates.io crate lets_expect_core 0.5.1
[INFO] tweaked toml for crates.io crate lets_expect_core 0.5.1 written to /workspace/builds/worker-4-tc1/source/Cargo.toml
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+ab869e094a907cc5d19b4080f22eccaf347f1f95" "generate-lockfile" "--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]      Locking 34 packages to latest compatible versions
[INFO] [stderr]       Adding addr2line v0.22.0 (latest: v0.24.1)
[INFO] [stderr]       Adding gimli v0.29.0 (latest: v0.31.0)
[INFO] [stderr]       Adding miniz_oxide v0.7.4 (latest: v0.8.0)
[INFO] [stderr]       Adding syn v1.0.109 (latest: v2.0.77)
[INFO] [stderr]       Adding windows-sys v0.48.0 (latest: v0.59.0)
[INFO] [stderr]       Adding windows-targets v0.48.5 (latest: v0.52.6)
[INFO] [stderr]       Adding windows_aarch64_gnullvm v0.48.5 (latest: v0.52.6)
[INFO] [stderr]       Adding windows_aarch64_msvc v0.48.5 (latest: v0.52.6)
[INFO] [stderr]       Adding windows_i686_gnu v0.48.5 (latest: v0.52.6)
[INFO] [stderr]       Adding windows_i686_msvc v0.48.5 (latest: v0.52.6)
[INFO] [stderr]       Adding windows_x86_64_gnu v0.48.5 (latest: v0.52.6)
[INFO] [stderr]       Adding windows_x86_64_gnullvm v0.48.5 (latest: v0.52.6)
[INFO] [stderr]       Adding windows_x86_64_msvc v0.48.5 (latest: v0.52.6)
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+ab869e094a907cc5d19b4080f22eccaf347f1f95" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded english-numbers v0.3.3
[INFO] [stderr]   Downloaded topological-sort v0.2.2
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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@sha256:923055f121b5182466d55868a8b05e67af8ba4a3a3f6bad814e953ca3cd3ac2a" "/opt/rustwide/cargo-home/bin/cargo" "+ab869e094a907cc5d19b4080f22eccaf347f1f95" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] b7dffcce87ff1400acb46164c111569517e190c8e13540fa86197ee9354c7f72
[INFO] running `Command { std: "docker" "start" "-a" "b7dffcce87ff1400acb46164c111569517e190c8e13540fa86197ee9354c7f72", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "b7dffcce87ff1400acb46164c111569517e190c8e13540fa86197ee9354c7f72", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "b7dffcce87ff1400acb46164c111569517e190c8e13540fa86197ee9354c7f72", kill_on_drop: false }`
[INFO] [stdout] b7dffcce87ff1400acb46164c111569517e190c8e13540fa86197ee9354c7f72
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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" "-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@sha256:923055f121b5182466d55868a8b05e67af8ba4a3a3f6bad814e953ca3cd3ac2a" "/opt/rustwide/cargo-home/bin/cargo" "+ab869e094a907cc5d19b4080f22eccaf347f1f95" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] da5b7916d58f11f4dfd5f49681f8e3b5c32fd77895894af570c2057300a7f2f7
[INFO] running `Command { std: "docker" "start" "-a" "da5b7916d58f11f4dfd5f49681f8e3b5c32fd77895894af570c2057300a7f2f7", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.86
[INFO] [stderr]     Checking topological-sort v0.2.2
[INFO] [stderr]     Checking english-numbers v0.3.3
[INFO] [stderr]    Compiling syn v1.0.109
[INFO] [stderr]     Checking colored v2.1.0
[INFO] [stderr]     Checking quote v1.0.37
[INFO] [stderr]     Checking lets_expect_core v0.5.1 (/opt/rustwide/workdir)
[INFO] [stdout] warning: field `keyword` is never read
[INFO] [stdout]  --> src/core/after_block.rs:6:9
[INFO] [stdout]   |
[INFO] [stdout] 5 | pub struct AfterBlock {
[INFO] [stdout]   |            ---------- field in this struct
[INFO] [stdout] 6 |     pub keyword: keyword::after,
[INFO] [stdout]   |         ^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `keyword` is never read
[INFO] [stdout]  --> src/core/before_block.rs:6:9
[INFO] [stdout]   |
[INFO] [stdout] 5 | pub struct BeforeBlock {
[INFO] [stdout]   |            ----------- field in this struct
[INFO] [stdout] 6 |     pub keyword: keyword::before,
[INFO] [stdout]   |         ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `keyword` is never read
[INFO] [stdout]  --> src/core/story_block.rs:6:9
[INFO] [stdout]   |
[INFO] [stdout] 5 | pub struct StoryBlock {
[INFO] [stdout]   |            ---------- field in this struct
[INFO] [stdout] 6 |     pub keyword: keyword::story,
[INFO] [stdout]   |         ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `keyword` is never read
[INFO] [stdout]  --> src/core/to_block.rs:7:9
[INFO] [stdout]   |
[INFO] [stdout] 6 | pub struct ToBlock {
[INFO] [stdout]   |            ------- field in this struct
[INFO] [stdout] 7 |     pub keyword: keyword::to,
[INFO] [stdout]   |         ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 4 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `keyword` is never read
[INFO] [stdout]  --> src/core/after_block.rs:6:9
[INFO] [stdout]   |
[INFO] [stdout] 5 | pub struct AfterBlock {
[INFO] [stdout]   |            ---------- field in this struct
[INFO] [stdout] 6 |     pub keyword: keyword::after,
[INFO] [stdout]   |         ^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `keyword` is never read
[INFO] [stdout]  --> src/core/before_block.rs:6:9
[INFO] [stdout]   |
[INFO] [stdout] 5 | pub struct BeforeBlock {
[INFO] [stdout]   |            ----------- field in this struct
[INFO] [stdout] 6 |     pub keyword: keyword::before,
[INFO] [stdout]   |         ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `keyword` is never read
[INFO] [stdout]  --> src/core/story_block.rs:6:9
[INFO] [stdout]   |
[INFO] [stdout] 5 | pub struct StoryBlock {
[INFO] [stdout]   |            ---------- field in this struct
[INFO] [stdout] 6 |     pub keyword: keyword::story,
[INFO] [stdout]   |         ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `keyword` is never read
[INFO] [stdout]  --> src/core/to_block.rs:7:9
[INFO] [stdout]   |
[INFO] [stdout] 6 | pub struct ToBlock {
[INFO] [stdout]   |            ------- field in this struct
[INFO] [stdout] 7 |     pub keyword: keyword::to,
[INFO] [stdout]   |         ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 4 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 6.00s
[INFO] running `Command { std: "docker" "inspect" "da5b7916d58f11f4dfd5f49681f8e3b5c32fd77895894af570c2057300a7f2f7", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "da5b7916d58f11f4dfd5f49681f8e3b5c32fd77895894af570c2057300a7f2f7", kill_on_drop: false }`
[INFO] [stdout] da5b7916d58f11f4dfd5f49681f8e3b5c32fd77895894af570c2057300a7f2f7