[INFO] cloning repository https://github.com/SuperTails/langcraft
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/SuperTails/langcraft" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FSuperTails%2Flangcraft", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FSuperTails%2Flangcraft'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 03d689a6e118345ffc1c0e42960294c284dd81e5
[INFO] checking SuperTails/langcraft against master#5e3f1b148db5bfa27fee52464ae1f5d34c49d77b for pr-75502
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FSuperTails%2Flangcraft" "/workspace/builds/worker-4/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-4/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/SuperTails/langcraft on toolchain 5e3f1b148db5bfa27fee52464ae1f5d34c49d77b
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+5e3f1b148db5bfa27fee52464ae1f5d34c49d77b" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/SuperTails/langcraft
[INFO] finished tweaking git repo https://github.com/SuperTails/langcraft
[INFO] tweaked toml for git repo https://github.com/SuperTails/langcraft written to /workspace/builds/worker-4/source/Cargo.toml
[INFO] crate git repo https://github.com/SuperTails/langcraft already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+5e3f1b148db5bfa27fee52464ae1f5d34c49d77b" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/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" "rustops/crates-build-env@sha256:a636fd89d022f18117e1dc8fb37a0a009933cdbbe082814857f0e2024962d47c" "/opt/rustwide/cargo-home/bin/cargo" "+5e3f1b148db5bfa27fee52464ae1f5d34c49d77b" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 706590677ea3550b2cccee3bcab4e5b1248db384a6b63ed4817a59b37d2724a1
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "706590677ea3550b2cccee3bcab4e5b1248db384a6b63ed4817a59b37d2724a1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "706590677ea3550b2cccee3bcab4e5b1248db384a6b63ed4817a59b37d2724a1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "706590677ea3550b2cccee3bcab4e5b1248db384a6b63ed4817a59b37d2724a1", kill_on_drop: false }`
[INFO] [stdout] 706590677ea3550b2cccee3bcab4e5b1248db384a6b63ed4817a59b37d2724a1
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/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" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "rustops/crates-build-env@sha256:a636fd89d022f18117e1dc8fb37a0a009933cdbbe082814857f0e2024962d47c" "/opt/rustwide/cargo-home/bin/cargo" "+5e3f1b148db5bfa27fee52464ae1f5d34c49d77b" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] cf9fd52885a370d242d042aaf0851c4d98d2e9af64bcefc5db1067cb318effd5
[INFO] running `Command { std: "docker" "start" "-a" "cf9fd52885a370d242d042aaf0851c4d98d2e9af64bcefc5db1067cb318effd5", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.18
[INFO] [stderr]    Compiling lazy_static v1.4.0
[INFO] [stderr]    Compiling regex-syntax v0.6.18
[INFO] [stderr]    Compiling cc v1.0.55
[INFO] [stderr]    Compiling serde_json v1.0.56
[INFO] [stderr]     Checking fixedbitset v0.2.0
[INFO] [stderr]     Checking itoa v0.4.6
[INFO] [stderr]    Compiling hashbrown v0.8.2
[INFO] [stderr]    Compiling indexmap v1.5.1
[INFO] [stderr]    Compiling memchr v2.3.3
[INFO] [stderr]     Checking log v0.4.8
[INFO] [stderr]    Compiling thread_local v1.0.1
[INFO] [stderr]    Compiling aho-corasick v0.7.13
[INFO] [stderr]    Compiling quote v1.0.7
[INFO] [stderr]    Compiling syn v1.0.33
[INFO] [stderr]     Checking petgraph v0.5.1
[INFO] [stderr]    Compiling regex v1.3.9
[INFO] [stderr]    Compiling llvm-sys v90.0.0
[INFO] [stderr]    Compiling serde_derive v1.0.114
[INFO] [stderr]    Compiling serde_with_macros v1.1.0
[INFO] [stderr]     Checking llvm-ir v0.5.3
[INFO] [stderr]     Checking serde v1.0.114
[INFO] [stderr]     Checking serde_with v1.4.0
[INFO] [stderr]     Checking langcraft v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: function is never used: `has_call_cycle`
[INFO] [stdout]    --> src/analysis.rs:122:15
[INFO] [stdout]     |
[INFO] [stdout] 122 | pub(crate) fn has_call_cycle(funcs: &[&Function], index: usize) -> bool {
[INFO] [stdout]     |               ^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `has_call_cycle_inner`
[INFO] [stdout]    --> src/analysis.rs:127:4
[INFO] [stdout]     |
[INFO] [stdout] 127 | fn has_call_cycle_inner(funcs: &[&Function], index: usize, visited: &mut HashSet<usize>) -> bool {
[INFO] [stdout]     |    ^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `has_call_cycle`
[INFO] [stdout]    --> src/analysis.rs:122:15
[INFO] [stdout]     |
[INFO] [stdout] 122 | pub(crate) fn has_call_cycle(funcs: &[&Function], index: usize) -> bool {
[INFO] [stdout]     |               ^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `has_call_cycle_inner`
[INFO] [stdout]    --> src/analysis.rs:127:4
[INFO] [stdout]     |
[INFO] [stdout] 127 | fn has_call_cycle_inner(funcs: &[&Function], index: usize, visited: &mut HashSet<usize>) -> bool {
[INFO] [stdout]     |    ^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1m 28s
[INFO] running `Command { std: "docker" "inspect" "cf9fd52885a370d242d042aaf0851c4d98d2e9af64bcefc5db1067cb318effd5", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "cf9fd52885a370d242d042aaf0851c4d98d2e9af64bcefc5db1067cb318effd5", kill_on_drop: false }`
[INFO] [stdout] cf9fd52885a370d242d042aaf0851c4d98d2e9af64bcefc5db1067cb318effd5