[INFO] fetching crate ref_iter 0.4.2...
[INFO] checking ref_iter-0.4.2 against master#08cd08fbef8c6663b052d8d9e4930d5696cbb8a7 for 150662-leaf
[INFO] extracting crate ref_iter 0.4.2 into /workspace/builds/worker-3-tc1/source
[INFO] started tweaking crates.io crate ref_iter 0.4.2
[INFO] removed 0 missing tests
[INFO] finished tweaking crates.io crate ref_iter 0.4.2
[INFO] tweaked toml for crates.io crate ref_iter 0.4.2 written to /workspace/builds/worker-3-tc1/source/Cargo.toml
[INFO] validating manifest of crates.io crate ref_iter 0.4.2 on toolchain 08cd08fbef8c6663b052d8d9e4930d5696cbb8a7
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+08cd08fbef8c6663b052d8d9e4930d5696cbb8a7" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate crates.io crate ref_iter 0.4.2 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" "+08cd08fbef8c6663b052d8d9e4930d5696cbb8a7" "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]     Blocking waiting for file lock on package cache
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded ref_iter_macro v0.3.1
[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:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+08cd08fbef8c6663b052d8d9e4930d5696cbb8a7" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 42c32f4c1e56bf8db5ee55a76986aa7c40b3fbd35b685e318006d50ff22f7b1e
[INFO] running `Command { std: "docker" "start" "-a" "42c32f4c1e56bf8db5ee55a76986aa7c40b3fbd35b685e318006d50ff22f7b1e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "42c32f4c1e56bf8db5ee55a76986aa7c40b3fbd35b685e318006d50ff22f7b1e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "42c32f4c1e56bf8db5ee55a76986aa7c40b3fbd35b685e318006d50ff22f7b1e", kill_on_drop: false }`
[INFO] [stdout] 42c32f4c1e56bf8db5ee55a76986aa7c40b3fbd35b685e318006d50ff22f7b1e
[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:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+08cd08fbef8c6663b052d8d9e4930d5696cbb8a7" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] c73b8dd002c5392938cccd986f5d1564cafe654eb7a995e63e60860d3440099c
[INFO] running `Command { std: "docker" "start" "-a" "c73b8dd002c5392938cccd986f5d1564cafe654eb7a995e63e60860d3440099c", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.86
[INFO] [stderr]    Compiling quote v1.0.37
[INFO] [stderr]    Compiling syn v2.0.77
[INFO] [stderr]    Compiling ref_iter_macro v0.3.1
[INFO] [stderr]     Checking ref_iter v0.4.2 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 3.70s
[INFO] running `Command { std: "docker" "inspect" "c73b8dd002c5392938cccd986f5d1564cafe654eb7a995e63e60860d3440099c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "c73b8dd002c5392938cccd986f5d1564cafe654eb7a995e63e60860d3440099c", kill_on_drop: false }`
[INFO] [stdout] c73b8dd002c5392938cccd986f5d1564cafe654eb7a995e63e60860d3440099c