[INFO] fetching crate discretionary_engine 1.0.0...
[INFO] checking discretionary_engine-1.0.0 against try#7014e13d5becc920d4bea3cd87942c8a13d359bf+rustflags=-Dtail_expr_drop_order for pr-129864
[INFO] extracting crate discretionary_engine 1.0.0 into /workspace/builds/worker-4-tc2/source
[INFO] validating manifest of crates.io crate discretionary_engine 1.0.0 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 discretionary_engine 1.0.0
[INFO] finished tweaking crates.io crate discretionary_engine 1.0.0
[INFO] tweaked toml for crates.io crate discretionary_engine 1.0.0 written to /workspace/builds/worker-4-tc2/source/Cargo.toml
[INFO] crate crates.io crate discretionary_engine 1.0.0 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" "+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-4-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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] 1d924c2abf291211005a78ccacbff40ddf4c9079c2853c4482032c285b0cf7c4
[INFO] running `Command { std: "docker" "start" "-a" "1d924c2abf291211005a78ccacbff40ddf4c9079c2853c4482032c285b0cf7c4", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "1d924c2abf291211005a78ccacbff40ddf4c9079c2853c4482032c285b0cf7c4", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "1d924c2abf291211005a78ccacbff40ddf4c9079c2853c4482032c285b0cf7c4", kill_on_drop: false }`
[INFO] [stdout] 1d924c2abf291211005a78ccacbff40ddf4c9079c2853c4482032c285b0cf7c4
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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] 42c7d43c725af531604749046e5fc45431b5eb49928032754ec2baa3a8b822ff
[INFO] running `Command { std: "docker" "start" "-a" "42c7d43c725af531604749046e5fc45431b5eb49928032754ec2baa3a8b822ff", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.86
[INFO] [stderr]    Compiling unicode-ident v1.0.13
[INFO] [stderr]     Checking cfg-if v1.0.0
[INFO] [stderr]    Compiling libc v0.2.158
[INFO] [stderr]    Compiling autocfg v1.3.0
[INFO] [stderr]    Compiling serde v1.0.210
[INFO] [stderr]     Checking memchr v2.7.4
[INFO] [stderr]     Checking once_cell v1.20.0
[INFO] [stderr]     Checking pin-project-lite v0.2.14
[INFO] [stderr]     Checking itoa v1.0.11
[INFO] [stderr]     Checking log v0.4.22
[INFO] [stderr]     Checking smallvec v1.13.2
[INFO] [stderr]     Checking bytes v1.7.1
[INFO] [stderr]     Checking futures-core v0.3.30
[INFO] [stderr]     Checking futures-sink v0.3.30
[INFO] [stderr]     Checking byteorder v1.5.0
[INFO] [stdout] error: failed to find a `codegen-backends` folder in the sysroot candidates:
[INFO] [stdout]        * /opt/rustwide/rustup-home/toolchains/7014e13d5becc920d4bea3cd87942c8a13d359bf
[INFO] [stdout]        * /opt/rustwide/rustup-home/toolchains/7014e13d5becc920d4bea3cd87942c8a13d359bf
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: failed to find a `codegen-backends` folder in the sysroot candidates:
[INFO] [stdout]        * /opt/rustwide/rustup-home/toolchains/7014e13d5becc920d4bea3cd87942c8a13d359bf
[INFO] [stdout]        * /opt/rustwide/rustup-home/toolchains/7014e13d5becc920d4bea3cd87942c8a13d359bf
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: failed to find a `codegen-backends` folder in the sysroot candidates:
[INFO] [stdout]        * /opt/rustwide/rustup-home/toolchains/7014e13d5becc920d4bea3cd87942c8a13d359bf
[INFO] [stdout]        * /opt/rustwide/rustup-home/toolchains/7014e13d5becc920d4bea3cd87942c8a13d359bf
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `byteorder` (lib) due to 1 previous error
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stderr] error: could not compile `log` (lib) due to 1 previous error
[INFO] [stdout] error: failed to find a `codegen-backends` folder in the sysroot candidates:
[INFO] [stdout]        * /opt/rustwide/rustup-home/toolchains/7014e13d5becc920d4bea3cd87942c8a13d359bf
[INFO] [stdout]        * /opt/rustwide/rustup-home/toolchains/7014e13d5becc920d4bea3cd87942c8a13d359bf
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `unicode-ident` (lib) due to 1 previous error
[INFO] [stderr] error: could not compile `smallvec` (lib) due to 1 previous error
[INFO] [stdout] error: failed to find a `codegen-backends` folder in the sysroot candidates:
[INFO] [stdout]        * /opt/rustwide/rustup-home/toolchains/7014e13d5becc920d4bea3cd87942c8a13d359bf
[INFO] [stdout]        * /opt/rustwide/rustup-home/toolchains/7014e13d5becc920d4bea3cd87942c8a13d359bf
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `libc` (build script) due to 1 previous error
[INFO] [stdout] error: failed to find a `codegen-backends` folder in the sysroot candidates:
[INFO] [stdout]        * /opt/rustwide/rustup-home/toolchains/7014e13d5becc920d4bea3cd87942c8a13d359bf
[INFO] [stdout]        * /opt/rustwide/rustup-home/toolchains/7014e13d5becc920d4bea3cd87942c8a13d359bf
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: failed to find a `codegen-backends` folder in the sysroot candidates:
[INFO] [stdout]        * /opt/rustwide/rustup-home/toolchains/7014e13d5becc920d4bea3cd87942c8a13d359bf
[INFO] [stdout]        * /opt/rustwide/rustup-home/toolchains/7014e13d5becc920d4bea3cd87942c8a13d359bf
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: failed to find a `codegen-backends` folder in the sysroot candidates:
[INFO] [stdout]        * /opt/rustwide/rustup-home/toolchains/7014e13d5becc920d4bea3cd87942c8a13d359bf
[INFO] [stdout]        * /opt/rustwide/rustup-home/toolchains/7014e13d5becc920d4bea3cd87942c8a13d359bf
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `proc-macro2` (build script) due to 1 previous error
[INFO] [stderr] error: could not compile `pin-project-lite` (lib) due to 1 previous error
[INFO] [stdout] error: failed to find a `codegen-backends` folder in the sysroot candidates:
[INFO] [stdout]        * /opt/rustwide/rustup-home/toolchains/7014e13d5becc920d4bea3cd87942c8a13d359bf
[INFO] [stdout]        * /opt/rustwide/rustup-home/toolchains/7014e13d5becc920d4bea3cd87942c8a13d359bf
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `itoa` (lib) due to 1 previous error
[INFO] [stdout] error: failed to find a `codegen-backends` folder in the sysroot candidates:
[INFO] [stdout]        * /opt/rustwide/rustup-home/toolchains/7014e13d5becc920d4bea3cd87942c8a13d359bf
[INFO] [stdout]        * /opt/rustwide/rustup-home/toolchains/7014e13d5becc920d4bea3cd87942c8a13d359bf
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: failed to find a `codegen-backends` folder in the sysroot candidates:
[INFO] [stdout]        * /opt/rustwide/rustup-home/toolchains/7014e13d5becc920d4bea3cd87942c8a13d359bf
[INFO] [stdout]        * /opt/rustwide/rustup-home/toolchains/7014e13d5becc920d4bea3cd87942c8a13d359bf
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `cfg-if` (lib) due to 1 previous error
[INFO] [stdout] error: failed to find a `codegen-backends` folder in the sysroot candidates:
[INFO] [stdout]        * /opt/rustwide/rustup-home/toolchains/7014e13d5becc920d4bea3cd87942c8a13d359bf
[INFO] [stdout]        * /opt/rustwide/rustup-home/toolchains/7014e13d5becc920d4bea3cd87942c8a13d359bf
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `autocfg` (lib) due to 1 previous error
[INFO] [stderr] error: could not compile `bytes` (lib) due to 1 previous error
[INFO] [stdout] error: failed to find a `codegen-backends` folder in the sysroot candidates:
[INFO] [stdout]        * /opt/rustwide/rustup-home/toolchains/7014e13d5becc920d4bea3cd87942c8a13d359bf
[INFO] [stdout]        * /opt/rustwide/rustup-home/toolchains/7014e13d5becc920d4bea3cd87942c8a13d359bf
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `serde` (build script) due to 1 previous error
[INFO] [stdout] error: failed to find a `codegen-backends` folder in the sysroot candidates:
[INFO] [stdout]        * /opt/rustwide/rustup-home/toolchains/7014e13d5becc920d4bea3cd87942c8a13d359bf
[INFO] [stdout]        * /opt/rustwide/rustup-home/toolchains/7014e13d5becc920d4bea3cd87942c8a13d359bf
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `futures-core` (lib) due to 1 previous error
[INFO] [stderr] error: could not compile `once_cell` (lib) due to 1 previous error
[INFO] [stdout] error: failed to find a `codegen-backends` folder in the sysroot candidates:
[INFO] [stdout]        * /opt/rustwide/rustup-home/toolchains/7014e13d5becc920d4bea3cd87942c8a13d359bf
[INFO] [stdout]        * /opt/rustwide/rustup-home/toolchains/7014e13d5becc920d4bea3cd87942c8a13d359bf
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `memchr` (lib) due to 1 previous error
[INFO] [stdout] error: failed to find a `codegen-backends` folder in the sysroot candidates:
[INFO] [stdout]        * /opt/rustwide/rustup-home/toolchains/7014e13d5becc920d4bea3cd87942c8a13d359bf
[INFO] [stdout]        * /opt/rustwide/rustup-home/toolchains/7014e13d5becc920d4bea3cd87942c8a13d359bf
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `futures-sink` (lib) due to 1 previous error
[INFO] running `Command { std: "docker" "inspect" "42c7d43c725af531604749046e5fc45431b5eb49928032754ec2baa3a8b822ff", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "42c7d43c725af531604749046e5fc45431b5eb49928032754ec2baa3a8b822ff", kill_on_drop: false }`
[INFO] [stdout] 42c7d43c725af531604749046e5fc45431b5eb49928032754ec2baa3a8b822ff