[INFO] cloning repository https://github.com/yhlnb/graph
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/yhlnb/graph" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fyhlnb%2Fgraph", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fyhlnb%2Fgraph'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 66103f1421369ea9ba5d2f7b962c5849e207481b
[INFO] checking yhlnb/graph against master#36ecbc94eb6be90bc38b2d0fdd4bfac3f34d9923 for pr-81863
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fyhlnb%2Fgraph" "/workspace/builds/worker-1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-1/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/yhlnb/graph on toolchain 36ecbc94eb6be90bc38b2d0fdd4bfac3f34d9923
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+36ecbc94eb6be90bc38b2d0fdd4bfac3f34d9923" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/yhlnb/graph
[INFO] finished tweaking git repo https://github.com/yhlnb/graph
[INFO] tweaked toml for git repo https://github.com/yhlnb/graph written to /workspace/builds/worker-1/source/Cargo.toml
[INFO] crate git repo https://github.com/yhlnb/graph already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+36ecbc94eb6be90bc38b2d0fdd4bfac3f34d9923" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/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:ce6408862c0f4858e6cd2b85b2cf085ff7d0d6323904d0a94b71664a228554ab" "/opt/rustwide/cargo-home/bin/cargo" "+36ecbc94eb6be90bc38b2d0fdd4bfac3f34d9923" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] d9798beaf16433193647a3d208b444e0f3869435c6b159f51233427921d615d4
[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" "d9798beaf16433193647a3d208b444e0f3869435c6b159f51233427921d615d4", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "d9798beaf16433193647a3d208b444e0f3869435c6b159f51233427921d615d4", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "d9798beaf16433193647a3d208b444e0f3869435c6b159f51233427921d615d4", kill_on_drop: false }`
[INFO] [stdout] d9798beaf16433193647a3d208b444e0f3869435c6b159f51233427921d615d4
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/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:ce6408862c0f4858e6cd2b85b2cf085ff7d0d6323904d0a94b71664a228554ab" "/opt/rustwide/cargo-home/bin/cargo" "+36ecbc94eb6be90bc38b2d0fdd4bfac3f34d9923" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 60e1663f7ead599e1140c8861b6c67c07e4a4f3c4ff7b44951c8d78cfd33ff59
[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" "60e1663f7ead599e1140c8861b6c67c07e4a4f3c4ff7b44951c8d78cfd33ff59", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.62
[INFO] [stderr]    Compiling proc-macro2 v1.0.2
[INFO] [stderr]    Compiling syn v1.0.5
[INFO] [stderr]    Compiling log v0.4.8
[INFO] [stderr]    Compiling wasm-bindgen-shared v0.2.50
[INFO] [stderr]    Compiling cfg-if v0.1.9
[INFO] [stderr]    Compiling getrandom v0.1.11
[INFO] [stderr]    Compiling bumpalo v2.6.0
[INFO] [stderr]    Compiling byteorder v1.3.2
[INFO] [stderr]     Checking ppv-lite86 v0.2.5
[INFO] [stderr]    Compiling wasm-bindgen v0.2.50
[INFO] [stderr]     Checking keccak v0.1.0
[INFO] [stderr]     Checking c2-chacha v0.2.2
[INFO] [stderr]     Checking block-buffer v0.7.3
[INFO] [stderr]     Checking sha3 v0.8.2
[INFO] [stderr]    Compiling quote v1.0.2
[INFO] [stderr]     Checking rand v0.4.6
[INFO] [stderr]     Checking time v0.1.42
[INFO] [stderr]     Checking rand_core v0.5.1
[INFO] [stderr]     Checking rand_chacha v0.2.1
[INFO] [stderr]     Checking rand v0.7.0
[INFO] [stderr]     Checking rand v0.3.23
[INFO] [stderr]     Checking rust-crypto v0.2.36
[INFO] [stderr]    Compiling wasm-bindgen-backend v0.2.50
[INFO] [stderr]    Compiling wasm-bindgen-macro-support v0.2.50
[INFO] [stderr]    Compiling wasm-bindgen-macro v0.2.50
[INFO] [stderr]     Checking expender v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `Mutex`
[INFO] [stdout]  --> src/main.rs:6:22
[INFO] [stdout]   |
[INFO] [stdout] 6 | use std::sync::{Arc, Mutex};
[INFO] [stdout]   |                      ^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `Mutex`
[INFO] [stdout]  --> src/main.rs:6:22
[INFO] [stdout]   |
[INFO] [stdout] 6 | use std::sync::{Arc, Mutex};
[INFO] [stdout]   |                      ^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `i`
[INFO] [stdout]   --> src/graph.rs:53:13
[INFO] [stdout]    |
[INFO] [stdout] 53 |         for i in 0..n {
[INFO] [stdout]    |             ^ help: if this is intentional, prefix it with an underscore: `_i`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `new`
[INFO] [stdout]   --> src/hashfunc.rs:15:12
[INFO] [stdout]    |
[INFO] [stdout] 15 |     pub fn new() -> Self{
[INFO] [stdout]    |            ^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `digest`
[INFO] [stdout]   --> src/hashfunc.rs:19:12
[INFO] [stdout]    |
[INFO] [stdout] 19 |     pub fn digest(&mut self) -> Vec<u8> {
[INFO] [stdout]    |            ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `label_sources`
[INFO] [stdout]   --> src/hashfunc.rs:23:12
[INFO] [stdout]    |
[INFO] [stdout] 23 |     pub fn label_sources(&mut self , nonce: &[u8] ,i:usize) -> Vec<u8> {
[INFO] [stdout]    |            ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `label_non_source`
[INFO] [stdout]   --> src/hashfunc.rs:29:12
[INFO] [stdout]    |
[INFO] [stdout] 29 |     pub fn label_non_source(&mut self, parent_labels: &[&VertexLabel]) -> Vec<u8> {
[INFO] [stdout]    |            ^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `i`
[INFO] [stdout]   --> src/graph.rs:53:13
[INFO] [stdout]    |
[INFO] [stdout] 53 |         for i in 0..n {
[INFO] [stdout]    |             ^ help: if this is intentional, prefix it with an underscore: `_i`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 6 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `new`
[INFO] [stdout]   --> src/hashfunc.rs:15:12
[INFO] [stdout]    |
[INFO] [stdout] 15 |     pub fn new() -> Self{
[INFO] [stdout]    |            ^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `digest`
[INFO] [stdout]   --> src/hashfunc.rs:19:12
[INFO] [stdout]    |
[INFO] [stdout] 19 |     pub fn digest(&mut self) -> Vec<u8> {
[INFO] [stdout]    |            ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `label_sources`
[INFO] [stdout]   --> src/hashfunc.rs:23:12
[INFO] [stdout]    |
[INFO] [stdout] 23 |     pub fn label_sources(&mut self , nonce: &[u8] ,i:usize) -> Vec<u8> {
[INFO] [stdout]    |            ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `label_non_source`
[INFO] [stdout]   --> src/hashfunc.rs:29:12
[INFO] [stdout]    |
[INFO] [stdout] 29 |     pub fn label_non_source(&mut self, parent_labels: &[&VertexLabel]) -> Vec<u8> {
[INFO] [stdout]    |            ^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 6 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 45.94s
[INFO] running `Command { std: "docker" "inspect" "60e1663f7ead599e1140c8861b6c67c07e4a4f3c4ff7b44951c8d78cfd33ff59", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "60e1663f7ead599e1140c8861b6c67c07e4a4f3c4ff7b44951c8d78cfd33ff59", kill_on_drop: false }`
[INFO] [stdout] 60e1663f7ead599e1140c8861b6c67c07e4a4f3c4ff7b44951c8d78cfd33ff59