[INFO] cloning repository https://github.com/mvanniekerk/abelian_sandpile
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/mvanniekerk/abelian_sandpile" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fmvanniekerk%2Fabelian_sandpile", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fmvanniekerk%2Fabelian_sandpile'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] e5033ed65a67887d0dd766b72af4596c1b7cab47
[INFO] testing mvanniekerk/abelian_sandpile against 1.60.0 for beta-1.61-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fmvanniekerk%2Fabelian_sandpile" "/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/mvanniekerk/abelian_sandpile on toolchain 1.60.0
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.60.0" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/mvanniekerk/abelian_sandpile
[INFO] finished tweaking git repo https://github.com/mvanniekerk/abelian_sandpile
[INFO] tweaked toml for git repo https://github.com/mvanniekerk/abelian_sandpile written to /workspace/builds/worker-4/source/Cargo.toml
[INFO] crate git repo https://github.com/mvanniekerk/abelian_sandpile already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.60.0" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[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" "ghcr.io/rust-lang/crates-build-env/linux@sha256:b0c94ce3c1162fcb8e57cac5b65ec2f72eabb1eebea4fcc35e269e823f681646" "/opt/rustwide/cargo-home/bin/cargo" "+1.60.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 61c3eaee8d333c646ee2cdb6c491e0f6c4340a603eadb4774cd61fe3ae82dba5
[INFO] running `Command { std: "docker" "start" "-a" "61c3eaee8d333c646ee2cdb6c491e0f6c4340a603eadb4774cd61fe3ae82dba5", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "61c3eaee8d333c646ee2cdb6c491e0f6c4340a603eadb4774cd61fe3ae82dba5", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "61c3eaee8d333c646ee2cdb6c491e0f6c4340a603eadb4774cd61fe3ae82dba5", kill_on_drop: false }`
[INFO] [stdout] 61c3eaee8d333c646ee2cdb6c491e0f6c4340a603eadb4774cd61fe3ae82dba5
[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=warn" "-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:b0c94ce3c1162fcb8e57cac5b65ec2f72eabb1eebea4fcc35e269e823f681646" "/opt/rustwide/cargo-home/bin/cargo" "+1.60.0" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] a597bac8ad7ed8130765acbf9d0380219bb9ef0493a6abbb5215d2a7b42bdac8
[INFO] running `Command { std: "docker" "start" "-a" "a597bac8ad7ed8130765acbf9d0380219bb9ef0493a6abbb5215d2a7b42bdac8", kill_on_drop: false }`
[INFO] [stderr]    Compiling num-traits v0.2.4
[INFO] [stderr]    Compiling cfg-if v0.1.3
[INFO] [stderr]    Compiling nodrop v0.1.12
[INFO] [stderr]    Compiling num-integer v0.1.38
[INFO] [stderr]    Compiling memoffset v0.2.1
[INFO] [stderr]    Compiling rayon-core v1.4.0
[INFO] [stderr]    Compiling num-iter v0.1.37
[INFO] [stderr]    Compiling adler32 v1.0.3
[INFO] [stderr]    Compiling byteorder v1.2.3
[INFO] [stderr]    Compiling either v1.5.0
[INFO] [stderr]    Compiling num_cpus v1.8.0
[INFO] [stderr]    Compiling proc-macro2 v0.4.6
[INFO] [stderr]    Compiling gif v0.10.0
[INFO] [stderr]    Compiling crossbeam-utils v0.2.2
[INFO] [stderr]    Compiling arrayvec v0.4.7
[INFO] [stderr]    Compiling inflate v0.4.2
[INFO] [stderr]    Compiling deflate v0.7.18
[INFO] [stderr]    Compiling quote v0.6.3
[INFO] [stderr]    Compiling syn v0.14.2
[INFO] [stderr]    Compiling crossbeam-epoch v0.3.1
[INFO] [stderr]    Compiling crossbeam-deque v0.2.0
[INFO] [stderr]    Compiling rayon v1.0.1
[INFO] [stderr]    Compiling num-rational v0.1.42
[INFO] [stderr]    Compiling png v0.12.0
[INFO] [stderr]    Compiling num-derive v0.2.2
[INFO] [stderr]    Compiling jpeg-decoder v0.1.15
[INFO] [stderr]    Compiling image v0.19.0
[INFO] [stderr]    Compiling abelian_sandpile v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: function is never used: `print_map`
[INFO] [stdout]   --> src/main.rs:65:4
[INFO] [stdout]    |
[INFO] [stdout] 65 | fn print_map(map: &Map) {
[INFO] [stdout]    |    ^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `add`
[INFO] [stdout]    --> src/main.rs:107:4
[INFO] [stdout]     |
[INFO] [stdout] 107 | fn add(one: &Map, two: &Map) -> Map {
[INFO] [stdout]     |    ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `negate`
[INFO] [stdout]    --> src/main.rs:117:4
[INFO] [stdout]     |
[INFO] [stdout] 117 | fn negate(mat: &Map) -> Map {
[INFO] [stdout]     |    ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `subtract`
[INFO] [stdout]    --> src/main.rs:127:4
[INFO] [stdout]     |
[INFO] [stdout] 127 | fn subtract(one: &Map, two: &Map) -> Map {
[INFO] [stdout]     |    ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `identity`
[INFO] [stdout]    --> src/main.rs:131:4
[INFO] [stdout]     |
[INFO] [stdout] 131 | fn identity() -> Map {
[INFO] [stdout]     |    ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]    --> src/main.rs:157:5
[INFO] [stdout]     |
[INFO] [stdout] 157 |     create_dir_all(directory);
[INFO] [stdout]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_must_use)]` on by default
[INFO] [stdout]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 6 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 12.74s
[INFO] running `Command { std: "docker" "inspect" "a597bac8ad7ed8130765acbf9d0380219bb9ef0493a6abbb5215d2a7b42bdac8", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "a597bac8ad7ed8130765acbf9d0380219bb9ef0493a6abbb5215d2a7b42bdac8", kill_on_drop: false }`
[INFO] [stdout] a597bac8ad7ed8130765acbf9d0380219bb9ef0493a6abbb5215d2a7b42bdac8
[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=warn" "-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:b0c94ce3c1162fcb8e57cac5b65ec2f72eabb1eebea4fcc35e269e823f681646" "/opt/rustwide/cargo-home/bin/cargo" "+1.60.0" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 08f64db7c9cbf8927a2b49f38ff3b9feed756e2c3351ca4df0f4c6a6247aa9de
[INFO] running `Command { std: "docker" "start" "-a" "08f64db7c9cbf8927a2b49f38ff3b9feed756e2c3351ca4df0f4c6a6247aa9de", kill_on_drop: false }`
[INFO] [stderr]    Compiling abelian_sandpile v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: function is never used: `print_map`
[INFO] [stdout]   --> src/main.rs:65:4
[INFO] [stdout]    |
[INFO] [stdout] 65 | fn print_map(map: &Map) {
[INFO] [stdout]    |    ^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `add`
[INFO] [stdout]    --> src/main.rs:107:4
[INFO] [stdout]     |
[INFO] [stdout] 107 | fn add(one: &Map, two: &Map) -> Map {
[INFO] [stdout]     |    ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `negate`
[INFO] [stdout]    --> src/main.rs:117:4
[INFO] [stdout]     |
[INFO] [stdout] 117 | fn negate(mat: &Map) -> Map {
[INFO] [stdout]     |    ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `subtract`
[INFO] [stdout]    --> src/main.rs:127:4
[INFO] [stdout]     |
[INFO] [stdout] 127 | fn subtract(one: &Map, two: &Map) -> Map {
[INFO] [stdout]     |    ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `identity`
[INFO] [stdout]    --> src/main.rs:131:4
[INFO] [stdout]     |
[INFO] [stdout] 131 | fn identity() -> Map {
[INFO] [stdout]     |    ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]    --> src/main.rs:157:5
[INFO] [stdout]     |
[INFO] [stdout] 157 |     create_dir_all(directory);
[INFO] [stdout]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_must_use)]` on by default
[INFO] [stdout]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 6 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.67s
[INFO] running `Command { std: "docker" "inspect" "08f64db7c9cbf8927a2b49f38ff3b9feed756e2c3351ca4df0f4c6a6247aa9de", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "08f64db7c9cbf8927a2b49f38ff3b9feed756e2c3351ca4df0f4c6a6247aa9de", kill_on_drop: false }`
[INFO] [stdout] 08f64db7c9cbf8927a2b49f38ff3b9feed756e2c3351ca4df0f4c6a6247aa9de
[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=warn" "-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:b0c94ce3c1162fcb8e57cac5b65ec2f72eabb1eebea4fcc35e269e823f681646" "/opt/rustwide/cargo-home/bin/cargo" "+1.60.0" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] 9d5c12a1fa20c996b2d8170a24cbbbf354976149a855390f8cdb124ccb272db1
[INFO] running `Command { std: "docker" "start" "-a" "9d5c12a1fa20c996b2d8170a24cbbbf354976149a855390f8cdb124ccb272db1", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr] warning: function is never used: `print_map`
[INFO] [stderr]   --> src/main.rs:65:4
[INFO] [stderr]    |
[INFO] [stderr] 65 | fn print_map(map: &Map) {
[INFO] [stderr]    |    ^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `add`
[INFO] [stderr]    --> src/main.rs:107:4
[INFO] [stderr]     |
[INFO] [stderr] 107 | fn add(one: &Map, two: &Map) -> Map {
[INFO] [stderr]     |    ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `negate`
[INFO] [stderr]    --> src/main.rs:117:4
[INFO] [stderr]     |
[INFO] [stderr] 117 | fn negate(mat: &Map) -> Map {
[INFO] [stderr]     |    ^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `subtract`
[INFO] [stderr]    --> src/main.rs:127:4
[INFO] [stderr]     |
[INFO] [stderr] 127 | fn subtract(one: &Map, two: &Map) -> Map {
[INFO] [stderr]     |    ^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `identity`
[INFO] [stderr]    --> src/main.rs:131:4
[INFO] [stderr]     |
[INFO] [stderr] 131 | fn identity() -> Map {
[INFO] [stderr]     |    ^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused `Result` that must be used
[INFO] [stderr]    --> src/main.rs:157:5
[INFO] [stderr]     |
[INFO] [stderr] 157 |     create_dir_all(directory);
[INFO] [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(unused_must_use)]` on by default
[INFO] [stderr]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stderr] 
[INFO] [stderr] warning: `abelian_sandpile` (bin "abelian_sandpile" test) generated 6 warnings
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.75s
[INFO] [stderr]      Running unittests (/opt/rustwide/target/debug/deps/abelian_sandpile-90c8970cc7484cf7)
[INFO] [stdout] 
[INFO] [stdout] running 0 tests
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "9d5c12a1fa20c996b2d8170a24cbbbf354976149a855390f8cdb124ccb272db1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "9d5c12a1fa20c996b2d8170a24cbbbf354976149a855390f8cdb124ccb272db1", kill_on_drop: false }`
[INFO] [stdout] 9d5c12a1fa20c996b2d8170a24cbbbf354976149a855390f8cdb124ccb272db1