[INFO] cloning repository https://github.com/d-becker/spider
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/d-becker/spider" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fd-becker%2Fspider", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fd-becker%2Fspider'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 5c0922ad1d9d2a4395dcee99ff6c22b3acd819e5
[INFO] building d-becker/spider against master#ad211ced81509462cdfe4c29ed10f97279a0acae for pr-135216-2
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fd-becker%2Fspider" "/workspace/builds/worker-7-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-7-tc1/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/d-becker/spider on toolchain ad211ced81509462cdfe4c29ed10f97279a0acae
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+ad211ced81509462cdfe4c29ed10f97279a0acae" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/d-becker/spider
[INFO] finished tweaking git repo https://github.com/d-becker/spider
[INFO] tweaked toml for git repo https://github.com/d-becker/spider written to /workspace/builds/worker-7-tc1/source/Cargo.toml
[INFO] crate git repo https://github.com/d-becker/spider 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" "+ad211ced81509462cdfe4c29ed10f97279a0acae" "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 ppv-lite86 v0.2.8
[INFO] [stderr]   Downloaded gobject-sys v0.9.1
[INFO] [stderr]   Downloaded proc-macro-nested v0.1.4
[INFO] [stderr]   Downloaded pkg-config v0.3.17
[INFO] [stderr]   Downloaded cairo-sys-rs v0.9.2
[INFO] [stderr]   Downloaded unicode-xid v0.2.0
[INFO] [stderr]   Downloaded futures-io v0.3.5
[INFO] [stderr]   Downloaded bitflags v1.2.1
[INFO] [stderr]   Downloaded futures-executor v0.3.5
[INFO] [stderr]   Downloaded gdk-pixbuf v0.8.0
[INFO] [stderr]   Downloaded futures-channel v0.3.5
[INFO] [stderr]   Downloaded proc-macro2 v1.0.13
[INFO] [stderr]   Downloaded cairo-rs v0.8.1
[INFO] [stderr]   Downloaded atk v0.8.0
[INFO] [stderr]   Downloaded gdk-sys v0.9.1
[INFO] [stderr]   Downloaded cc v1.0.53
[INFO] [stderr]   Downloaded gdk v0.12.1
[INFO] [stderr]   Downloaded gio v0.8.1
[INFO] [stderr]   Downloaded glib v0.9.3
[INFO] [stderr]   Downloaded gtk-sys v0.9.2
[INFO] [stderr]   Downloaded futures-util v0.3.5
[INFO] [stderr]   Downloaded syn v1.0.22
[INFO] [stderr]   Downloaded gio-sys v0.9.1
[INFO] [stderr]   Downloaded pin-project v0.4.17
[INFO] [stderr]   Downloaded pango v0.8.0
[INFO] [stderr]   Downloaded glib-sys v0.9.1
[INFO] [stderr]   Downloaded once_cell v1.4.0
[INFO] [stderr]   Downloaded libc v0.2.70
[INFO] [stderr]   Downloaded quote v1.0.6
[INFO] [stderr]   Downloaded proc-macro-hack v0.5.15
[INFO] [stderr]   Downloaded slab v0.4.2
[INFO] [stderr]   Downloaded atk-sys v0.9.1
[INFO] [stderr]   Downloaded gdk-pixbuf-sys v0.9.1
[INFO] [stderr]   Downloaded futures-core v0.3.5
[INFO] [stderr]   Downloaded futures-macro v0.3.5
[INFO] [stderr]   Downloaded futures-task v0.3.5
[INFO] [stderr]   Downloaded pin-project-internal v0.4.17
[INFO] [stderr]   Downloaded getrandom v0.1.14
[INFO] [stderr]   Downloaded pango-sys v0.9.1
[INFO] [stderr]   Downloaded either v1.5.3
[INFO] [stderr]   Downloaded gtk v0.8.1
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-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:f3a9d4ad9d972b27faf3965f35b62e55ba32bbce8f20bc8fe909558a86702fde" "/opt/rustwide/cargo-home/bin/cargo" "+ad211ced81509462cdfe4c29ed10f97279a0acae" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 8fe4752e5fea52ef9567a3cdea21112a392de81d5aeffd11adb519431f6f8090
[INFO] running `Command { std: "docker" "start" "-a" "8fe4752e5fea52ef9567a3cdea21112a392de81d5aeffd11adb519431f6f8090", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "8fe4752e5fea52ef9567a3cdea21112a392de81d5aeffd11adb519431f6f8090", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "8fe4752e5fea52ef9567a3cdea21112a392de81d5aeffd11adb519431f6f8090", kill_on_drop: false }`
[INFO] [stdout] 8fe4752e5fea52ef9567a3cdea21112a392de81d5aeffd11adb519431f6f8090
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-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:f3a9d4ad9d972b27faf3965f35b62e55ba32bbce8f20bc8fe909558a86702fde" "/opt/rustwide/cargo-home/bin/cargo" "+ad211ced81509462cdfe4c29ed10f97279a0acae" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 14ab15a1ab9a96dec5fae90f1aa98940a4aeaf349a95ab726a3db052c73de25b
[INFO] running `Command { std: "docker" "start" "-a" "14ab15a1ab9a96dec5fae90f1aa98940a4aeaf349a95ab726a3db052c73de25b", kill_on_drop: false }`
[INFO] [stderr]    Compiling pkg-config v0.3.17
[INFO] [stderr]    Compiling libc v0.2.70
[INFO] [stderr]    Compiling proc-macro2 v1.0.13
[INFO] [stderr]    Compiling unicode-xid v0.2.0
[INFO] [stderr]    Compiling syn v1.0.22
[INFO] [stderr]    Compiling proc-macro-nested v0.1.4
[INFO] [stderr]    Compiling proc-macro-hack v0.5.15
[INFO] [stderr]    Compiling once_cell v1.4.0
[INFO] [stderr]    Compiling futures-core v0.3.5
[INFO] [stderr]    Compiling futures-task v0.3.5
[INFO] [stderr]    Compiling slab v0.4.2
[INFO] [stderr]    Compiling pin-utils v0.1.0
[INFO] [stderr]    Compiling bitflags v1.2.1
[INFO] [stderr]    Compiling futures-channel v0.3.5
[INFO] [stderr]    Compiling getrandom v0.1.14
[INFO] [stderr]    Compiling gio v0.8.1
[INFO] [stderr]    Compiling cfg-if v0.1.10
[INFO] [stderr]    Compiling glib-sys v0.9.1
[INFO] [stderr]    Compiling gobject-sys v0.9.1
[INFO] [stderr]    Compiling gio-sys v0.9.1
[INFO] [stderr]    Compiling gdk-pixbuf-sys v0.9.1
[INFO] [stderr]    Compiling cairo-sys-rs v0.9.2
[INFO] [stderr]    Compiling pango-sys v0.9.1
[INFO] [stderr]    Compiling gdk-sys v0.9.1
[INFO] [stderr]    Compiling atk-sys v0.9.1
[INFO] [stderr]    Compiling gtk-sys v0.9.2
[INFO] [stderr]    Compiling gdk-pixbuf v0.8.0
[INFO] [stderr]    Compiling cairo-rs v0.8.1
[INFO] [stderr]    Compiling quote v1.0.6
[INFO] [stderr]    Compiling pango v0.8.0
[INFO] [stderr]    Compiling futures-io v0.3.5
[INFO] [stderr]    Compiling ppv-lite86 v0.2.8
[INFO] [stderr]    Compiling atk v0.8.0
[INFO] [stderr]    Compiling gdk v0.12.1
[INFO] [stderr]    Compiling rand_core v0.5.1
[INFO] [stderr]    Compiling either v1.5.3
[INFO] [stderr]    Compiling gtk v0.8.1
[INFO] [stderr]    Compiling itertools v0.9.0
[INFO] [stderr]    Compiling rand_chacha v0.2.2
[INFO] [stderr]    Compiling rand v0.7.3
[INFO] [stderr]    Compiling spider_backend v0.1.0 (/opt/rustwide/workdir/spider_backend)
[INFO] [stdout] warning: unused variable: `field`
[INFO] [stdout]   --> spider_backend/src/model/snake.rs:17:29
[INFO] [stdout]    |
[INFO] [stdout] 17 |     pub fn next_step(&self, field: &Field, spider: &Spider) -> Direction {
[INFO] [stdout]    |                             ^^^^^ help: if this is intentional, prefix it with an underscore: `_field`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `spider`
[INFO] [stdout]   --> spider_backend/src/model/snake.rs:17:44
[INFO] [stdout]    |
[INFO] [stdout] 17 |     pub fn next_step(&self, field: &Field, spider: &Spider) -> Direction {
[INFO] [stdout]    |                                            ^^^^^^ help: if this is intentional, prefix it with an underscore: `_spider`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]    Compiling pin-project-internal v0.4.17
[INFO] [stderr]    Compiling futures-macro v0.3.5
[INFO] [stderr]    Compiling pin-project v0.4.17
[INFO] [stderr]    Compiling futures-util v0.3.5
[INFO] [stderr]    Compiling futures-executor v0.3.5
[INFO] [stderr]    Compiling glib v0.9.3
[INFO] [stderr]    Compiling spider_gtk v0.1.0 (/opt/rustwide/workdir/spider_gtk)
[INFO] [stderr]    Compiling spider v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 1m 49s
[INFO] running `Command { std: "docker" "inspect" "14ab15a1ab9a96dec5fae90f1aa98940a4aeaf349a95ab726a3db052c73de25b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "14ab15a1ab9a96dec5fae90f1aa98940a4aeaf349a95ab726a3db052c73de25b", kill_on_drop: false }`
[INFO] [stdout] 14ab15a1ab9a96dec5fae90f1aa98940a4aeaf349a95ab726a3db052c73de25b
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-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:f3a9d4ad9d972b27faf3965f35b62e55ba32bbce8f20bc8fe909558a86702fde" "/opt/rustwide/cargo-home/bin/cargo" "+ad211ced81509462cdfe4c29ed10f97279a0acae" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] eb7ab26a8e002db252fdad878c0fec38cf622a89be51a42263798c854a27dc46
[INFO] running `Command { std: "docker" "start" "-a" "eb7ab26a8e002db252fdad878c0fec38cf622a89be51a42263798c854a27dc46", kill_on_drop: false }`
[INFO] [stderr]    Compiling spider v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused variable: `field`
[INFO] [stdout]   --> spider_backend/src/model/snake.rs:17:29
[INFO] [stdout]    |
[INFO] [stdout] 17 |     pub fn next_step(&self, field: &Field, spider: &Spider) -> Direction {
[INFO] [stdout]    |                             ^^^^^ help: if this is intentional, prefix it with an underscore: `_field`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `spider`
[INFO] [stdout]   --> spider_backend/src/model/snake.rs:17:44
[INFO] [stdout]    |
[INFO] [stdout] 17 |     pub fn next_step(&self, field: &Field, spider: &Spider) -> Direction {
[INFO] [stdout]    |                                            ^^^^^^ help: if this is intentional, prefix it with an underscore: `_spider`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.77s
[INFO] running `Command { std: "docker" "inspect" "eb7ab26a8e002db252fdad878c0fec38cf622a89be51a42263798c854a27dc46", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "eb7ab26a8e002db252fdad878c0fec38cf622a89be51a42263798c854a27dc46", kill_on_drop: false }`
[INFO] [stdout] eb7ab26a8e002db252fdad878c0fec38cf622a89be51a42263798c854a27dc46