[INFO] fetching crate libvex-macros 0.1.0...
[INFO] checking libvex-macros-0.1.0 against try#44e31dee3cf6f37b4f652572897bb0eb25c477ee for pr-139763
[INFO] extracting crate libvex-macros 0.1.0 into /workspace/builds/worker-1-tc2/source
[INFO] validating manifest of crates.io crate libvex-macros 0.1.0 on toolchain 44e31dee3cf6f37b4f652572897bb0eb25c477ee
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+44e31dee3cf6f37b4f652572897bb0eb25c477ee" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate libvex-macros 0.1.0
[INFO] finished tweaking crates.io crate libvex-macros 0.1.0
[INFO] tweaked toml for crates.io crate libvex-macros 0.1.0 written to /workspace/builds/worker-1-tc2/source/Cargo.toml
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+44e31dee3cf6f37b4f652572897bb0eb25c477ee" "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 4 packages to latest compatible versions
[INFO] [stderr]       Adding syn v1.0.109 (available: v2.0.100)
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+44e31dee3cf6f37b4f652572897bb0eb25c477ee" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-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:b0b074c097205a61b89e8ad263052f976b2b332c4dc5f02aef1fe52501660d6e" "/opt/rustwide/cargo-home/bin/cargo" "+44e31dee3cf6f37b4f652572897bb0eb25c477ee" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 3ba913a4ff8ac9a51652be33ecffe8a680fd22972d8d8a42fa8fd5ddb7b4f298
[INFO] running `Command { std: "docker" "start" "-a" "3ba913a4ff8ac9a51652be33ecffe8a680fd22972d8d8a42fa8fd5ddb7b4f298", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "3ba913a4ff8ac9a51652be33ecffe8a680fd22972d8d8a42fa8fd5ddb7b4f298", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "3ba913a4ff8ac9a51652be33ecffe8a680fd22972d8d8a42fa8fd5ddb7b4f298", kill_on_drop: false }`
[INFO] [stdout] 3ba913a4ff8ac9a51652be33ecffe8a680fd22972d8d8a42fa8fd5ddb7b4f298
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-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" "-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:b0b074c097205a61b89e8ad263052f976b2b332c4dc5f02aef1fe52501660d6e" "/opt/rustwide/cargo-home/bin/cargo" "+44e31dee3cf6f37b4f652572897bb0eb25c477ee" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] a1b7fa2a62f3cc72ce03ca2c08e626eaa55eb352c43b41581e5ae74f155971b4
[INFO] running `Command { std: "docker" "start" "-a" "a1b7fa2a62f3cc72ce03ca2c08e626eaa55eb352c43b41581e5ae74f155971b4", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.94
[INFO] [stderr]     Checking unicode-ident v1.0.18
[INFO] [stderr]    Compiling syn v1.0.109
[INFO] [stderr]     Checking quote v1.0.40
[INFO] [stderr]     Checking libvex-macros v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: variant `CCall` is never constructed
[INFO] [stdout]    --> src/lib.rs:162:5
[INFO] [stdout]     |
[INFO] [stdout] 156 | enum Expr {
[INFO] [stdout]     |      ---- variant in this enum
[INFO] [stdout] ...
[INFO] [stdout] 162 |     CCall,
[INFO] [stdout]     |     ^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `0` is never read
[INFO] [stdout]    --> src/lib.rs:332:10
[INFO] [stdout]     |
[INFO] [stdout] 332 |     NoOp(StmtNoOp),
[INFO] [stdout]     |     ---- ^^^^^^^^
[INFO] [stdout]     |     |
[INFO] [stdout]     |     field in this variant
[INFO] [stdout]     |
[INFO] [stdout] help: consider changing the field to be of unit type to suppress this warning while preserving the field numbering, or remove the field
[INFO] [stdout]     |
[INFO] [stdout] 332 -     NoOp(StmtNoOp),
[INFO] [stdout] 332 +     NoOp(()),
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant `CCall` is never constructed
[INFO] [stdout]    --> src/lib.rs:162:5
[INFO] [stdout]     |
[INFO] [stdout] 156 | enum Expr {
[INFO] [stdout]     |      ---- variant in this enum
[INFO] [stdout] ...
[INFO] [stdout] 162 |     CCall,
[INFO] [stdout]     |     ^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `0` is never read
[INFO] [stdout]    --> src/lib.rs:332:10
[INFO] [stdout]     |
[INFO] [stdout] 332 |     NoOp(StmtNoOp),
[INFO] [stdout]     |     ---- ^^^^^^^^
[INFO] [stdout]     |     |
[INFO] [stdout]     |     field in this variant
[INFO] [stdout]     |
[INFO] [stdout] help: consider changing the field to be of unit type to suppress this warning while preserving the field numbering, or remove the field
[INFO] [stdout]     |
[INFO] [stdout] 332 -     NoOp(StmtNoOp),
[INFO] [stdout] 332 +     NoOp(()),
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 2.74s
[INFO] running `Command { std: "docker" "inspect" "a1b7fa2a62f3cc72ce03ca2c08e626eaa55eb352c43b41581e5ae74f155971b4", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "a1b7fa2a62f3cc72ce03ca2c08e626eaa55eb352c43b41581e5ae74f155971b4", kill_on_drop: false }`
[INFO] [stdout] a1b7fa2a62f3cc72ce03ca2c08e626eaa55eb352c43b41581e5ae74f155971b4