[INFO] cloning repository https://github.com/Aimeedeer/walnuts
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/Aimeedeer/walnuts" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FAimeedeer%2Fwalnuts", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FAimeedeer%2Fwalnuts'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 48039552c41c912fa37a39e2f6626106538ec828
[INFO] checking Aimeedeer/walnuts against master#48c0c2539542b05c35e168271e9fad72a20ac2dc for pr-113991-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FAimeedeer%2Fwalnuts" "/workspace/builds/worker-0-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-0-tc1/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/Aimeedeer/walnuts on toolchain 48c0c2539542b05c35e168271e9fad72a20ac2dc
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+48c0c2539542b05c35e168271e9fad72a20ac2dc" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/Aimeedeer/walnuts
[INFO] finished tweaking git repo https://github.com/Aimeedeer/walnuts
[INFO] tweaked toml for git repo https://github.com/Aimeedeer/walnuts written to /workspace/builds/worker-0-tc1/source/Cargo.toml
[INFO] crate git repo https://github.com/Aimeedeer/walnuts 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" "+48c0c2539542b05c35e168271e9fad72a20ac2dc" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded structopt-derive v0.4.13
[INFO] [stderr]   Downloaded itoa v0.4.6
[INFO] [stderr]   Downloaded num-integer v0.1.44
[INFO] [stderr]   Downloaded radium v0.4.1
[INFO] [stderr]   Downloaded const-oid v0.1.0
[INFO] [stderr]   Downloaded subtle v2.3.0
[INFO] [stderr]   Downloaded ansi_term v0.11.0
[INFO] [stderr]   Downloaded hermit-abi v0.1.17
[INFO] [stderr]   Downloaded unicode-width v0.1.8
[INFO] [stderr]   Downloaded elliptic-curve v0.6.6
[INFO] [stderr]   Downloaded time v0.1.44
[INFO] [stderr]   Downloaded k256 v0.5.10
[INFO] [stderr]   Downloaded heck v0.3.1
[INFO] [stderr]   Downloaded structopt v0.3.20
[INFO] [stderr]   Downloaded unicode-segmentation v1.6.0
[INFO] [stderr]   Downloaded syn v1.0.48
[INFO] [stderr]   Downloaded clap v2.33.3
[INFO] [stderr]   Downloaded serde v1.0.117
[INFO] [stderr]   Downloaded bitvec v0.18.4
[INFO] [stderr]   Downloaded chrono v0.4.19
[INFO] [stderr]   Downloaded libc v0.2.80
[INFO] [stderr]   Downloaded serde_derive v1.0.117
[INFO] [stderr]   Downloaded serde_json v1.0.59
[INFO] [stderr]   Downloaded wasi v0.10.0+wasi-snapshot-preview1
[INFO] [stderr]   Downloaded quote v1.0.7
[INFO] [stderr]   Downloaded anyhow v1.0.34
[INFO] [stderr]   Downloaded funty v1.0.1
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-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@sha256:5c16f4e6c37141f9fef0bc86f7a492d732943053e42aab8461035881e3f53823" "/opt/rustwide/cargo-home/bin/cargo" "+48c0c2539542b05c35e168271e9fad72a20ac2dc" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 30a88f1f67774b29cf14039a9b1f4342c76f4ee616b690fa883da26fee666c91
[INFO] running `Command { std: "docker" "start" "-a" "30a88f1f67774b29cf14039a9b1f4342c76f4ee616b690fa883da26fee666c91", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "30a88f1f67774b29cf14039a9b1f4342c76f4ee616b690fa883da26fee666c91", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "30a88f1f67774b29cf14039a9b1f4342c76f4ee616b690fa883da26fee666c91", kill_on_drop: false }`
[INFO] [stdout] 30a88f1f67774b29cf14039a9b1f4342c76f4ee616b690fa883da26fee666c91
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-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@sha256:5c16f4e6c37141f9fef0bc86f7a492d732943053e42aab8461035881e3f53823" "/opt/rustwide/cargo-home/bin/cargo" "+48c0c2539542b05c35e168271e9fad72a20ac2dc" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 1d1b05cc475d3083b27aaa88ef7bfa69f7fb82420d740c2fbfb50fc910ec6e0d
[INFO] running `Command { std: "docker" "start" "-a" "1d1b05cc475d3083b27aaa88ef7bfa69f7fb82420d740c2fbfb50fc910ec6e0d", kill_on_drop: false }`
[INFO] [stderr]    Compiling version_check v0.9.2
[INFO] [stderr]    Compiling syn v1.0.48
[INFO] [stderr]    Compiling typenum v1.12.0
[INFO] [stderr]    Compiling radium v0.4.1
[INFO] [stderr]    Compiling libc v0.2.80
[INFO] [stderr]    Compiling autocfg v1.0.1
[INFO] [stderr]     Checking funty v1.0.1
[INFO] [stderr]    Compiling serde_derive v1.0.117
[INFO] [stderr]     Checking subtle v2.3.0
[INFO] [stderr]    Compiling bitflags v1.2.1
[INFO] [stderr]    Compiling serde v1.0.117
[INFO] [stderr]     Checking unicode-width v0.1.8
[INFO] [stderr]    Compiling unicode-segmentation v1.6.0
[INFO] [stderr]     Checking strsim v0.8.0
[INFO] [stderr]    Compiling quote v1.0.7
[INFO] [stderr]     Checking const-oid v0.1.0
[INFO] [stderr]    Compiling serde_json v1.0.59
[INFO] [stderr]     Checking textwrap v0.11.0
[INFO] [stderr]     Checking ansi_term v0.11.0
[INFO] [stderr]    Compiling anyhow v1.0.34
[INFO] [stderr]     Checking vec_map v0.8.2
[INFO] [stderr]     Checking cpuid-bool v0.1.2
[INFO] [stderr]     Checking itoa v0.4.6
[INFO] [stderr]    Compiling generic-array v0.14.4
[INFO] [stderr]    Compiling proc-macro-error-attr v1.0.4
[INFO] [stderr]    Compiling num-traits v0.2.14
[INFO] [stderr]    Compiling proc-macro-error v1.0.4
[INFO] [stderr]    Compiling num-integer v0.1.44
[INFO] [stderr]    Compiling heck v0.3.1
[INFO] [stderr]     Checking bitvec v0.18.4
[INFO] [stderr]     Checking atty v0.2.14
[INFO] [stderr]     Checking time v0.1.44
[INFO] [stderr]     Checking clap v2.33.3
[INFO] [stderr]     Checking chrono v0.4.19
[INFO] [stderr]     Checking digest v0.9.0
[INFO] [stderr]     Checking block-buffer v0.9.0
[INFO] [stderr]     Checking sha2 v0.9.2
[INFO] [stderr]     Checking ff v0.8.0
[INFO] [stderr]     Checking group v0.8.0
[INFO] [stderr]     Checking elliptic-curve v0.6.6
[INFO] [stderr]     Checking k256 v0.5.10
[INFO] [stderr]    Compiling structopt-derive v0.4.13
[INFO] [stderr]     Checking structopt v0.3.20
[INFO] [stderr]     Checking walnuts v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: method `hash` is never used
[INFO] [stdout]   --> src/block.rs:46:12
[INFO] [stdout]    |
[INFO] [stdout] 13 | impl Block {
[INFO] [stdout]    | ---------- method in this implementation
[INFO] [stdout] ...
[INFO] [stdout] 46 |     pub fn hash(&self) -> &[u8; 32] {
[INFO] [stdout]    |            ^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `hash` is never used
[INFO] [stdout]   --> src/blockheader.rs:20:12
[INFO] [stdout]    |
[INFO] [stdout] 11 | impl BlockHeader {
[INFO] [stdout]    | ---------------- method in this implementation
[INFO] [stdout] ...
[INFO] [stdout] 20 |     pub fn hash(&self) -> &[u8; 32] {
[INFO] [stdout]    |            ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `hash` is never used
[INFO] [stdout]   --> src/block.rs:46:12
[INFO] [stdout]    |
[INFO] [stdout] 13 | impl Block {
[INFO] [stdout]    | ---------- method in this implementation
[INFO] [stdout] ...
[INFO] [stdout] 46 |     pub fn hash(&self) -> &[u8; 32] {
[INFO] [stdout]    |            ^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `hash` is never used
[INFO] [stdout]   --> src/blockheader.rs:20:12
[INFO] [stdout]    |
[INFO] [stdout] 11 | impl BlockHeader {
[INFO] [stdout]    | ---------------- method in this implementation
[INFO] [stdout] ...
[INFO] [stdout] 20 |     pub fn hash(&self) -> &[u8; 32] {
[INFO] [stdout]    |            ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 19.57s
[INFO] running `Command { std: "docker" "inspect" "1d1b05cc475d3083b27aaa88ef7bfa69f7fb82420d740c2fbfb50fc910ec6e0d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "1d1b05cc475d3083b27aaa88ef7bfa69f7fb82420d740c2fbfb50fc910ec6e0d", kill_on_drop: false }`
[INFO] [stdout] 1d1b05cc475d3083b27aaa88ef7bfa69f7fb82420d740c2fbfb50fc910ec6e0d