[INFO] fetching crate grass-driver 0.1.4...
[INFO] checking grass-driver-0.1.4 against master#cf38b8e663f15db10ce49d7bbce02c99fc3dbc0c for pr-143170
[INFO] extracting crate grass-driver 0.1.4 into /workspace/builds/worker-2-tc1/source
[INFO] started tweaking crates.io crate grass-driver 0.1.4
[INFO] finished tweaking crates.io crate grass-driver 0.1.4
[INFO] tweaked toml for crates.io crate grass-driver 0.1.4 written to /workspace/builds/worker-2-tc1/source/Cargo.toml
[INFO] validating manifest of crates.io crate grass-driver 0.1.4 on toolchain cf38b8e663f15db10ce49d7bbce02c99fc3dbc0c
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+cf38b8e663f15db10ce49d7bbce02c99fc3dbc0c" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate crates.io crate grass-driver 0.1.4 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" "+cf38b8e663f15db10ce49d7bbce02c99fc3dbc0c" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded bswap v1.0.0
[INFO] [stderr]   Downloaded grass-ir v0.1.4
[INFO] [stderr]   Downloaded strum_macros v0.24.0
[INFO] [stderr]   Downloaded file-lock v2.1.4
[INFO] [stderr]   Downloaded sha v1.0.3
[INFO] [stderr]   Downloaded mktemp v0.4.1
[INFO] [stderr]   Downloaded syn v1.0.97
[INFO] [stderr]   Downloaded nix v0.24.1
[INFO] [stderr]   Downloaded libc v0.2.121
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-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@sha256:90999bfc7ae267e83380e433d8e61a7c072ca6729e92edbae886d3423b3a6f4c" "/opt/rustwide/cargo-home/bin/cargo" "+cf38b8e663f15db10ce49d7bbce02c99fc3dbc0c" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 2cc2d5fb1459034fe30072e4328c0a60c41dca7c606ee7b44b7c81ac723eb3c1
[INFO] running `Command { std: "docker" "start" "-a" "2cc2d5fb1459034fe30072e4328c0a60c41dca7c606ee7b44b7c81ac723eb3c1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "2cc2d5fb1459034fe30072e4328c0a60c41dca7c606ee7b44b7c81ac723eb3c1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "2cc2d5fb1459034fe30072e4328c0a60c41dca7c606ee7b44b7c81ac723eb3c1", kill_on_drop: false }`
[INFO] [stdout] 2cc2d5fb1459034fe30072e4328c0a60c41dca7c606ee7b44b7c81ac723eb3c1
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-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@sha256:90999bfc7ae267e83380e433d8e61a7c072ca6729e92edbae886d3423b3a6f4c" "/opt/rustwide/cargo-home/bin/cargo" "+cf38b8e663f15db10ce49d7bbce02c99fc3dbc0c" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 7ebba4aea28c8932dcba7163409c460a60d692b880554319f9e7cbbb7226039d
[INFO] running `Command { std: "docker" "start" "-a" "7ebba4aea28c8932dcba7163409c460a60d692b880554319f9e7cbbb7226039d", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.39
[INFO] [stderr]    Compiling libc v0.2.121
[INFO] [stderr]    Compiling unicode-ident v1.0.1
[INFO] [stderr]    Compiling syn v1.0.97
[INFO] [stderr]    Compiling rustversion v1.0.6
[INFO] [stderr]    Compiling memchr v2.5.0
[INFO] [stderr]    Compiling serde_derive v1.0.137
[INFO] [stderr]    Compiling serde v1.0.137
[INFO] [stderr]    Compiling cc v1.0.72
[INFO] [stderr]    Compiling log v0.4.17
[INFO] [stderr]    Compiling heck v0.4.0
[INFO] [stderr]     Checking regex-syntax v0.6.26
[INFO] [stderr]    Compiling serde_json v1.0.81
[INFO] [stderr]     Checking itoa v1.0.2
[INFO] [stderr]     Checking humantime v2.1.0
[INFO] [stderr]     Checking aho-corasick v0.7.18
[INFO] [stderr]     Checking remove_dir_all v0.5.3
[INFO] [stderr]    Compiling quote v1.0.18
[INFO] [stderr]     Checking fastrand v1.7.0
[INFO] [stderr]     Checking ryu v1.0.10
[INFO] [stderr]     Checking bswap v1.0.0
[INFO] [stderr]     Checking termcolor v1.1.3
[INFO] [stderr]     Checking sha v1.0.3
[INFO] [stderr]    Compiling file-lock v2.1.4
[INFO] [stderr]     Checking regex v1.5.6
[INFO] [stderr]     Checking getrandom v0.2.7
[INFO] [stderr]     Checking atty v0.2.14
[INFO] [stderr]     Checking nix v0.24.1
[INFO] [stderr]     Checking tempfile v3.3.0
[INFO] [stderr]     Checking uuid v0.8.2
[INFO] [stderr]     Checking mktemp v0.4.1
[INFO] [stderr]     Checking env_logger v0.9.0
[INFO] [stderr]    Compiling strum_macros v0.24.0
[INFO] [stderr]     Checking strum v0.24.1
[INFO] [stderr]     Checking grass-ir v0.1.4
[INFO] [stderr]     Checking grass-driver v0.1.4 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 24.59s
[INFO] running `Command { std: "docker" "inspect" "7ebba4aea28c8932dcba7163409c460a60d692b880554319f9e7cbbb7226039d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "7ebba4aea28c8932dcba7163409c460a60d692b880554319f9e7cbbb7226039d", kill_on_drop: false }`
[INFO] [stdout] 7ebba4aea28c8932dcba7163409c460a60d692b880554319f9e7cbbb7226039d