[INFO] fetching crate bfcomp 0.1.2...
[INFO] building bfcomp-0.1.2 against master#11663cd3bfefef7d34e8f0892c250bf698049392+rustflags=-Dtail-expr-drop-order for pr-134523
[INFO] extracting crate bfcomp 0.1.2 into /workspace/builds/worker-3-tc1/source
[INFO] validating manifest of crates.io crate bfcomp 0.1.2 on toolchain 11663cd3bfefef7d34e8f0892c250bf698049392
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+11663cd3bfefef7d34e8f0892c250bf698049392" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate bfcomp 0.1.2
[INFO] finished tweaking crates.io crate bfcomp 0.1.2
[INFO] tweaked toml for crates.io crate bfcomp 0.1.2 written to /workspace/builds/worker-3-tc1/source/Cargo.toml
[INFO] crate crates.io crate bfcomp 0.1.2 already has a lockfile, it will not be regenerated
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+11663cd3bfefef7d34e8f0892c250bf698049392" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded bfcore v0.2.0
[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:f3a9d4ad9d972b27faf3965f35b62e55ba32bbce8f20bc8fe909558a86702fde" "/opt/rustwide/cargo-home/bin/cargo" "+11663cd3bfefef7d34e8f0892c250bf698049392" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] c7ede94f991902d3162cb4b920660beb66a445759cc35767b5b8de3423efe0df
[INFO] running `Command { std: "docker" "start" "-a" "c7ede94f991902d3162cb4b920660beb66a445759cc35767b5b8de3423efe0df", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "c7ede94f991902d3162cb4b920660beb66a445759cc35767b5b8de3423efe0df", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "c7ede94f991902d3162cb4b920660beb66a445759cc35767b5b8de3423efe0df", kill_on_drop: false }`
[INFO] [stdout] c7ede94f991902d3162cb4b920660beb66a445759cc35767b5b8de3423efe0df
[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 -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:f3a9d4ad9d972b27faf3965f35b62e55ba32bbce8f20bc8fe909558a86702fde" "/opt/rustwide/cargo-home/bin/cargo" "+11663cd3bfefef7d34e8f0892c250bf698049392" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] d327a0ae52581f6f4884e1506d2998cc6735055e9a858b02df25b6c9fccf80ac
[INFO] running `Command { std: "docker" "start" "-a" "d327a0ae52581f6f4884e1506d2998cc6735055e9a858b02df25b6c9fccf80ac", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.65
[INFO] [stderr]    Compiling unicode-width v0.1.6
[INFO] [stderr]    Compiling bfcore v0.2.0
[INFO] [stderr]    Compiling textwrap v0.11.0
[INFO] [stderr]    Compiling atty v0.2.13
[INFO] [stderr]    Compiling clap v2.33.0
[INFO] [stderr]    Compiling bfcomp v0.1.2 (/opt/rustwide/workdir)
[INFO] [stdout] warning: field `lang` is never read
[INFO] [stdout]  --> src/input.rs:9:5
[INFO] [stdout]   |
[INFO] [stdout] 8 | pub struct CompilerInput {
[INFO] [stdout]   |            ------------- field in this struct
[INFO] [stdout] 9 |     lang: Lang,
[INFO] [stdout]   |     ^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `CompilerInput` has derived impls for the traits `Clone` and `Debug`, but these are intentionally ignored during dead code analysis
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `lang` is never read
[INFO] [stdout]  --> src/compiler.rs:9:5
[INFO] [stdout]   |
[INFO] [stdout] 8 | pub struct Compiler {
[INFO] [stdout]   |            -------- field in this struct
[INFO] [stdout] 9 |     lang: Lang,
[INFO] [stdout]   |     ^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `Compiler` has derived impls for the traits `Clone` and `Debug`, but these are intentionally ignored during dead code analysis
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 2.51s
[INFO] running `Command { std: "docker" "inspect" "d327a0ae52581f6f4884e1506d2998cc6735055e9a858b02df25b6c9fccf80ac", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "d327a0ae52581f6f4884e1506d2998cc6735055e9a858b02df25b6c9fccf80ac", kill_on_drop: false }`
[INFO] [stdout] d327a0ae52581f6f4884e1506d2998cc6735055e9a858b02df25b6c9fccf80ac
[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 -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:f3a9d4ad9d972b27faf3965f35b62e55ba32bbce8f20bc8fe909558a86702fde" "/opt/rustwide/cargo-home/bin/cargo" "+11663cd3bfefef7d34e8f0892c250bf698049392" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] bebd11eac955e5ce714c546c06e096ceff42c25ce6c65c406934ba13d94302ce
[INFO] running `Command { std: "docker" "start" "-a" "bebd11eac955e5ce714c546c06e096ceff42c25ce6c65c406934ba13d94302ce", kill_on_drop: false }`
[INFO] [stderr]    Compiling bfcomp v0.1.2 (/opt/rustwide/workdir)
[INFO] [stdout] warning: field `lang` is never read
[INFO] [stdout]  --> src/input.rs:9:5
[INFO] [stdout]   |
[INFO] [stdout] 8 | pub struct CompilerInput {
[INFO] [stdout]   |            ------------- field in this struct
[INFO] [stdout] 9 |     lang: Lang,
[INFO] [stdout]   |     ^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `CompilerInput` has derived impls for the traits `Clone` and `Debug`, but these are intentionally ignored during dead code analysis
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `lang` is never read
[INFO] [stdout]  --> src/compiler.rs:9:5
[INFO] [stdout]   |
[INFO] [stdout] 8 | pub struct Compiler {
[INFO] [stdout]   |            -------- field in this struct
[INFO] [stdout] 9 |     lang: Lang,
[INFO] [stdout]   |     ^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `Compiler` has derived impls for the traits `Clone` and `Debug`, but these are intentionally ignored during dead code analysis
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `lang` is never read
[INFO] [stdout]  --> src/input.rs:9:5
[INFO] [stdout]   |
[INFO] [stdout] 8 | pub struct CompilerInput {
[INFO] [stdout]   |            ------------- field in this struct
[INFO] [stdout] 9 |     lang: Lang,
[INFO] [stdout]   |     ^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `CompilerInput` has derived impls for the traits `Clone` and `Debug`, but these are intentionally ignored during dead code analysis
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `lang` is never read
[INFO] [stdout]  --> src/compiler.rs:9:5
[INFO] [stdout]   |
[INFO] [stdout] 8 | pub struct Compiler {
[INFO] [stdout]   |            -------- field in this struct
[INFO] [stdout] 9 |     lang: Lang,
[INFO] [stdout]   |     ^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `Compiler` has derived impls for the traits `Clone` and `Debug`, but these are intentionally ignored during dead code analysis
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.12s
[INFO] running `Command { std: "docker" "inspect" "bebd11eac955e5ce714c546c06e096ceff42c25ce6c65c406934ba13d94302ce", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "bebd11eac955e5ce714c546c06e096ceff42c25ce6c65c406934ba13d94302ce", kill_on_drop: false }`
[INFO] [stdout] bebd11eac955e5ce714c546c06e096ceff42c25ce6c65c406934ba13d94302ce