[INFO] fetching crate hadron_sclang 0.1.0-alpha.2...
[INFO] checking hadron_sclang-0.1.0-alpha.2 against master#385fa9d845dd326c6bbfd58c22244215e431948a for absurd-question-mark-desugar
[INFO] extracting crate hadron_sclang 0.1.0-alpha.2 into /workspace/builds/worker-4-tc1/source
[INFO] validating manifest of crates.io crate hadron_sclang 0.1.0-alpha.2 on toolchain 385fa9d845dd326c6bbfd58c22244215e431948a
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+385fa9d845dd326c6bbfd58c22244215e431948a" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate hadron_sclang 0.1.0-alpha.2
[INFO] finished tweaking crates.io crate hadron_sclang 0.1.0-alpha.2
[INFO] tweaked toml for crates.io crate hadron_sclang 0.1.0-alpha.2 written to /workspace/builds/worker-4-tc1/source/Cargo.toml
[INFO] crate crates.io crate hadron_sclang 0.1.0-alpha.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" "+385fa9d845dd326c6bbfd58c22244215e431948a" "fetch" "--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]  Downloading crates ...
[INFO] [stderr]   Downloaded widestring v1.0.2
[INFO] [stderr]   Downloaded mach2 v0.4.1
[INFO] [stderr]   Downloaded const_format_proc_macros v0.2.31
[INFO] [stderr]   Downloaded const_format v0.2.31
[INFO] [stderr]   Downloaded combine v4.6.6
[INFO] [stderr]   Downloaded enum-as-inner v0.5.1
[INFO] [stderr]   Downloaded sysctl v0.5.4
[INFO] [stderr]   Downloaded mmap-rs v0.6.0
[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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+385fa9d845dd326c6bbfd58c22244215e431948a" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 698aa6f06e91a8b211a0143af20b512739a461ecb071c3563dfa0f9f86a2ec8b
[INFO] running `Command { std: "docker" "start" "-a" "698aa6f06e91a8b211a0143af20b512739a461ecb071c3563dfa0f9f86a2ec8b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "698aa6f06e91a8b211a0143af20b512739a461ecb071c3563dfa0f9f86a2ec8b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "698aa6f06e91a8b211a0143af20b512739a461ecb071c3563dfa0f9f86a2ec8b", kill_on_drop: false }`
[INFO] [stdout] 698aa6f06e91a8b211a0143af20b512739a461ecb071c3563dfa0f9f86a2ec8b
[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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+385fa9d845dd326c6bbfd58c22244215e431948a" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] d66defb68777c78a91a64da7fd1ad4a4e0238ff23995ae0eb440153bbe650030
[INFO] running `Command { std: "docker" "start" "-a" "d66defb68777c78a91a64da7fd1ad4a4e0238ff23995ae0eb440153bbe650030", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.69
[INFO] [stderr]    Compiling libc v0.2.149
[INFO] [stderr]    Compiling syn v1.0.109
[INFO] [stderr]    Compiling thiserror v1.0.49
[INFO] [stderr]     Checking walkdir v2.4.0
[INFO] [stderr]     Checking byteorder v1.5.0
[INFO] [stderr]     Checking memchr v2.6.4
[INFO] [stderr]     Checking bytes v1.5.0
[INFO] [stderr]     Checking combine v4.6.6
[INFO] [stderr]    Compiling quote v1.0.33
[INFO] [stderr]    Compiling syn v2.0.38
[INFO] [stderr]    Compiling const_format_proc_macros v0.2.31
[INFO] [stderr]     Checking nix v0.26.4
[INFO] [stderr]     Checking const_format v0.2.31
[INFO] [stderr]    Compiling thiserror-impl v1.0.49
[INFO] [stderr]    Compiling enum-as-inner v0.5.1
[INFO] [stderr]     Checking sysctl v0.5.4
[INFO] [stderr]     Checking mmap-rs v0.6.0
[INFO] [stderr]     Checking hadron_sclang v0.1.0-alpha.2 (/opt/rustwide/workdir)
[INFO] [stdout] warning: the item `mmap_rs` is imported redundantly
[INFO] [stdout]  --> src/toolchain/source/source_buffer.rs:1:5
[INFO] [stdout]   |
[INFO] [stdout] 1 | use mmap_rs;
[INFO] [stdout]   |     ^^^^^^^ the item `mmap_rs` is already defined by prelude
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `mmap_rs` is imported redundantly
[INFO] [stdout]  --> src/toolchain/source/source_buffer.rs:1:5
[INFO] [stdout]   |
[INFO] [stdout] 1 | use mmap_rs;
[INFO] [stdout]   |     ^^^^^^^ the item `mmap_rs` is already defined by prelude
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 18.78s
[INFO] running `Command { std: "docker" "inspect" "d66defb68777c78a91a64da7fd1ad4a4e0238ff23995ae0eb440153bbe650030", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "d66defb68777c78a91a64da7fd1ad4a4e0238ff23995ae0eb440153bbe650030", kill_on_drop: false }`
[INFO] [stdout] d66defb68777c78a91a64da7fd1ad4a4e0238ff23995ae0eb440153bbe650030