[INFO] fetching crate mine_sweeper 0.2.2...
[INFO] checking mine_sweeper-0.2.2 against try#fceb2de603f0807f9049222f3f612ed51ed8f9dc for pr-157576
[INFO] extracting crate mine_sweeper 0.2.2 into /workspace/builds/worker-6-tc2/source
[INFO] started tweaking crates.io crate mine_sweeper 0.2.2
[INFO] finished tweaking crates.io crate mine_sweeper 0.2.2
[INFO] tweaked toml for crates.io crate mine_sweeper 0.2.2 written to /workspace/builds/worker-6-tc2/source/Cargo.toml
[INFO] validating manifest of crates.io crate mine_sweeper 0.2.2 on toolchain fceb2de603f0807f9049222f3f612ed51ed8f9dc
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+fceb2de603f0807f9049222f3f612ed51ed8f9dc" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+fceb2de603f0807f9049222f3f612ed51ed8f9dc" "generate-lockfile" "--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]      Locking 93 packages to latest compatible versions
[INFO] [stderr]       Adding cursive v0.11.2 (available: v0.21.1)
[INFO] [stderr]       Adding rand v0.6.5 (available: v0.10.1)
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+fceb2de603f0807f9049222f3f612ed51ed8f9dc" "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] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded signal-hook v0.1.17
[INFO] [stderr]   Downloaded hashbrown v0.2.2
[INFO] [stderr]   Downloaded enum-map v0.5.0
[INFO] [stderr]   Downloaded enum-map-internals v0.1.2
[INFO] [stderr]   Downloaded enum-map-derive v0.4.6
[INFO] [stderr]   Downloaded ncurses v5.101.0
[INFO] [stderr]   Downloaded cursive v0.11.2
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc2/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc2/target:/opt/rustwide/target:rw,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" "-m" "1610612736" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:3e793bdf10248eb2ddbd6b0faebed8155c11b4589982e2893733958d93e8d540" "sleep" "infinity", kill_on_drop: false }`
[INFO] [stdout] 93d3fc6394fce641932694a1bad5469f086f87726b95ff83c08701bb4ece44ec
[INFO] running `Command { std: "docker" "start" "93d3fc6394fce641932694a1bad5469f086f87726b95ff83c08701bb4ece44ec", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "exec" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-w" "/opt/rustwide/workdir" "--user" "0:0" "93d3fc6394fce641932694a1bad5469f086f87726b95ff83c08701bb4ece44ec" "/opt/rustwide/cargo-home/bin/cargo" "+fceb2de603f0807f9049222f3f612ed51ed8f9dc" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "93d3fc6394fce641932694a1bad5469f086f87726b95ff83c08701bb4ece44ec", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "exec" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-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" "-w" "/opt/rustwide/workdir" "--user" "0:0" "93d3fc6394fce641932694a1bad5469f086f87726b95ff83c08701bb4ece44ec" "/opt/rustwide/cargo-home/bin/cargo" "+fceb2de603f0807f9049222f3f612ed51ed8f9dc" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stderr]    Compiling num-traits v0.2.19
[INFO] [stderr]    Compiling syn v0.15.44
[INFO] [stderr]    Compiling syn v1.0.109
[INFO] [stderr]    Compiling num-rational v0.2.4
[INFO] [stderr]    Compiling num-complex v0.2.4
[INFO] [stderr]    Compiling ncurses v5.101.0
[INFO] [stderr]    Compiling serde v1.0.228
[INFO] [stderr]     Checking array-macro v1.0.5
[INFO] [stderr]    Compiling rand_pcg v0.1.2
[INFO] [stderr]    Compiling rand_chacha v0.1.1
[INFO] [stderr]     Checking crossbeam-utils v0.6.6
[INFO] [stderr]    Compiling rand v0.6.5
[INFO] [stderr]     Checking rand_os v0.1.3
[INFO] [stderr]     Checking term_size v0.3.2
[INFO] [stderr]     Checking owning_ref v0.4.1
[INFO] [stderr]     Checking signal-hook v0.1.17
[INFO] [stderr]     Checking hashbrown v0.2.2
[INFO] [stderr]     Checking xi-unicode v0.1.0
[INFO] [stderr]     Checking enum-map-internals v0.1.2
[INFO] [stderr]     Checking maplit v1.0.2
[INFO] [stderr]     Checking unicode-segmentation v1.13.3
[INFO] [stderr]     Checking crossbeam-channel v0.3.9
[INFO] [stderr]     Checking toml v0.5.11
[INFO] [stderr]     Checking num-integer v0.1.46
[INFO] [stderr]     Checking chrono v0.4.45
[INFO] [stderr]     Checking num-iter v0.1.45
[INFO] [stderr]     Checking num v0.2.1
[INFO] [stderr]    Compiling enumset_derive v0.3.2
[INFO] [stderr]    Compiling enum-map-derive v0.4.6
[INFO] [stderr]     Checking enumset v0.3.19
[INFO] [stderr]     Checking enum-map v0.5.0
[INFO] [stderr]     Checking cursive v0.11.2
[INFO] [stderr]     Checking mine_sweeper v0.2.2 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 9.24s
[INFO] running `Command { std: "docker" "inspect" "93d3fc6394fce641932694a1bad5469f086f87726b95ff83c08701bb4ece44ec", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "93d3fc6394fce641932694a1bad5469f086f87726b95ff83c08701bb4ece44ec", kill_on_drop: false }`
[INFO] [stdout] 93d3fc6394fce641932694a1bad5469f086f87726b95ff83c08701bb4ece44ec