[INFO] fetching crate lets_expect_core 0.5.1...
[INFO] checking lets_expect_core-0.5.1 against master#38352b01ae4af9300be03b805d6db68c45e51068 for pr-129864
[INFO] extracting crate lets_expect_core 0.5.1 into /workspace/builds/worker-3-tc1/source
[INFO] validating manifest of crates.io crate lets_expect_core 0.5.1 on toolchain 38352b01ae4af9300be03b805d6db68c45e51068
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+38352b01ae4af9300be03b805d6db68c45e51068" "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-3-tc1/source/Cargo.toml
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+38352b01ae4af9300be03b805d6db68c45e51068" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]      Locking 40 packages to latest compatible versions
[INFO] [stderr]       Adding syn v1.0.109 (available: v2.0.77)
[INFO] [stderr]       Adding windows-sys v0.48.0 (available: v0.59.0)
[INFO] [stderr]       Adding windows-targets v0.48.5 (available: v0.52.6)
[INFO] [stderr]       Adding windows_aarch64_gnullvm v0.48.5 (available: v0.52.6)
[INFO] [stderr]       Adding windows_aarch64_msvc v0.48.5 (available: v0.52.6)
[INFO] [stderr]       Adding windows_i686_gnu v0.48.5 (available: v0.52.6)
[INFO] [stderr]       Adding windows_i686_msvc v0.48.5 (available: v0.52.6)
[INFO] [stderr]       Adding windows_x86_64_gnu v0.48.5 (available: v0.52.6)
[INFO] [stderr]       Adding windows_x86_64_gnullvm v0.48.5 (available: v0.52.6)
[INFO] [stderr]       Adding windows_x86_64_msvc v0.48.5 (available: v0.52.6)
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+38352b01ae4af9300be03b805d6db68c45e51068" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-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:ceb6ea022f8a89cebbe621bb4987e73a935bd40dfbb726f832cfff4742a5b95a" "/opt/rustwide/cargo-home/bin/cargo" "+38352b01ae4af9300be03b805d6db68c45e51068" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] c605bf251e5fc4c4f539f91c8698a702334d0477a538a7603b4216f43a4abd24
[INFO] running `Command { std: "docker" "start" "-a" "c605bf251e5fc4c4f539f91c8698a702334d0477a538a7603b4216f43a4abd24", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "c605bf251e5fc4c4f539f91c8698a702334d0477a538a7603b4216f43a4abd24", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "c605bf251e5fc4c4f539f91c8698a702334d0477a538a7603b4216f43a4abd24", kill_on_drop: false }`
[INFO] [stdout] c605bf251e5fc4c4f539f91c8698a702334d0477a538a7603b4216f43a4abd24
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-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:ceb6ea022f8a89cebbe621bb4987e73a935bd40dfbb726f832cfff4742a5b95a" "/opt/rustwide/cargo-home/bin/cargo" "+38352b01ae4af9300be03b805d6db68c45e51068" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] aa5951efefc8db5507aed439229fd925e9535dc05237212df0a4d4e730e0f096
[INFO] running `Command { std: "docker" "start" "-a" "aa5951efefc8db5507aed439229fd925e9535dc05237212df0a4d4e730e0f096", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.86
[INFO] [stderr]     Checking unicode-ident v1.0.13
[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: 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: 4 warnings emitted
[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 4.79s
[INFO] running `Command { std: "docker" "inspect" "aa5951efefc8db5507aed439229fd925e9535dc05237212df0a4d4e730e0f096", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "aa5951efefc8db5507aed439229fd925e9535dc05237212df0a4d4e730e0f096", kill_on_drop: false }`
[INFO] [stdout] aa5951efefc8db5507aed439229fd925e9535dc05237212df0a4d4e730e0f096