[INFO] cloning repository https://github.com/LadderTheory/euler
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/LadderTheory/euler" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FLadderTheory%2Feuler", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FLadderTheory%2Feuler'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 1c73179646f0e0041e923031344c4de4a158a5d1
[INFO] testing LadderTheory/euler against master#432e145bd5a974c5b6f4dd9b352891bd7502b69d for pr-87041
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FLadderTheory%2Feuler" "/workspace/builds/worker-3/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-3/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/LadderTheory/euler on toolchain 432e145bd5a974c5b6f4dd9b352891bd7502b69d
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+432e145bd5a974c5b6f4dd9b352891bd7502b69d" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/LadderTheory/euler
[INFO] finished tweaking git repo https://github.com/LadderTheory/euler
[INFO] tweaked toml for git repo https://github.com/LadderTheory/euler written to /workspace/builds/worker-3/source/Cargo.toml
[INFO] crate git repo https://github.com/LadderTheory/euler already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+432e145bd5a974c5b6f4dd9b352891bd7502b69d" "fetch" "--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-3/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/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@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+432e145bd5a974c5b6f4dd9b352891bd7502b69d" "metadata" "--no-deps" "--format-version=1", 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] 8b886f62c8438cb560543f9104a5b0aa3d2887afd69f082af7ece163aaf4dcdb
[INFO] running `Command { std: "docker" "start" "-a" "8b886f62c8438cb560543f9104a5b0aa3d2887afd69f082af7ece163aaf4dcdb", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "8b886f62c8438cb560543f9104a5b0aa3d2887afd69f082af7ece163aaf4dcdb", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "8b886f62c8438cb560543f9104a5b0aa3d2887afd69f082af7ece163aaf4dcdb", kill_on_drop: false }`
[INFO] [stdout] 8b886f62c8438cb560543f9104a5b0aa3d2887afd69f082af7ece163aaf4dcdb
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/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" "ghcr.io/rust-lang/crates-build-env/linux@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+432e145bd5a974c5b6f4dd9b352891bd7502b69d" "build" "--frozen" "--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] 7efc312ba7a2eaa549b2c6a0000b04eba67eb23eea4959819dad440ba7d7ca56
[INFO] running `Command { std: "docker" "start" "-a" "7efc312ba7a2eaa549b2c6a0000b04eba67eb23eea4959819dad440ba7d7ca56", kill_on_drop: false }`
[INFO] [stderr]    Compiling termcolor v1.1.2
[INFO] [stderr]    Compiling num-traits v0.2.14
[INFO] [stderr]    Compiling num-integer v0.1.44
[INFO] [stderr]    Compiling num-bigint v0.4.0
[INFO] [stderr]    Compiling num-rational v0.4.0
[INFO] [stderr]    Compiling num-iter v0.1.42
[INFO] [stderr]    Compiling num-complex v0.4.0
[INFO] [stderr]    Compiling num v0.4.0
[INFO] [stderr]    Compiling euler v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused variable: `acc`
[INFO] [stdout]    --> src/main.rs:531:32
[INFO] [stdout]     |
[INFO] [stdout] 531 | ...                   .fold("".to_string(), |acc, (i,x)| {
[INFO] [stdout]     |                                              ^^^ help: if this is intentional, prefix it with an underscore: `_acc`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `i`
[INFO] [stdout]    --> src/main.rs:531:38
[INFO] [stdout]     |
[INFO] [stdout] 531 | ...                   .fold("".to_string(), |acc, (i,x)| {
[INFO] [stdout]     |                                                    ^ help: if this is intentional, prefix it with an underscore: `_i`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `x`
[INFO] [stdout]    --> src/main.rs:531:40
[INFO] [stdout]     |
[INFO] [stdout] 531 | ...                   .fold("".to_string(), |acc, (i,x)| {
[INFO] [stdout]     |                                                      ^ help: if this is intentional, prefix it with an underscore: `_x`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 3 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 10.71s
[INFO] running `Command { std: "docker" "inspect" "7efc312ba7a2eaa549b2c6a0000b04eba67eb23eea4959819dad440ba7d7ca56", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "7efc312ba7a2eaa549b2c6a0000b04eba67eb23eea4959819dad440ba7d7ca56", kill_on_drop: false }`
[INFO] [stdout] 7efc312ba7a2eaa549b2c6a0000b04eba67eb23eea4959819dad440ba7d7ca56
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/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" "ghcr.io/rust-lang/crates-build-env/linux@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+432e145bd5a974c5b6f4dd9b352891bd7502b69d" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 2917bd626057ecbb36d2e3704cc8f07d5d3b9e6d7bc85c904f29e4041a48dc46
[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" "2917bd626057ecbb36d2e3704cc8f07d5d3b9e6d7bc85c904f29e4041a48dc46", kill_on_drop: false }`
[INFO] [stderr]    Compiling euler v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused variable: `acc`
[INFO] [stdout]    --> src/main.rs:531:32
[INFO] [stdout]     |
[INFO] [stdout] 531 | ...                   .fold("".to_string(), |acc, (i,x)| {
[INFO] [stdout]     |                                              ^^^ help: if this is intentional, prefix it with an underscore: `_acc`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `i`
[INFO] [stdout]    --> src/main.rs:531:38
[INFO] [stdout]     |
[INFO] [stdout] 531 | ...                   .fold("".to_string(), |acc, (i,x)| {
[INFO] [stdout]     |                                                    ^ help: if this is intentional, prefix it with an underscore: `_i`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `x`
[INFO] [stdout]    --> src/main.rs:531:40
[INFO] [stdout]     |
[INFO] [stdout] 531 | ...                   .fold("".to_string(), |acc, (i,x)| {
[INFO] [stdout]     |                                                      ^ help: if this is intentional, prefix it with an underscore: `_x`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 3 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 1.06s
[INFO] running `Command { std: "docker" "inspect" "2917bd626057ecbb36d2e3704cc8f07d5d3b9e6d7bc85c904f29e4041a48dc46", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "2917bd626057ecbb36d2e3704cc8f07d5d3b9e6d7bc85c904f29e4041a48dc46", kill_on_drop: false }`
[INFO] [stdout] 2917bd626057ecbb36d2e3704cc8f07d5d3b9e6d7bc85c904f29e4041a48dc46
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/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" "ghcr.io/rust-lang/crates-build-env/linux@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+432e145bd5a974c5b6f4dd9b352891bd7502b69d" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] d443f7ddc0d68579e392d412ddf7677f473dbf083f7a4a0cc3724a28df42290e
[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" "d443f7ddc0d68579e392d412ddf7677f473dbf083f7a4a0cc3724a28df42290e", kill_on_drop: false }`
[INFO] [stderr] warning: unused variable: `acc`
[INFO] [stderr]    --> src/main.rs:531:32
[INFO] [stderr]     |
[INFO] [stderr] 531 | ...                   .fold("".to_string(), |acc, (i,x)| {
[INFO] [stderr]     |                                              ^^^ help: if this is intentional, prefix it with an underscore: `_acc`
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(unused_variables)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `i`
[INFO] [stderr]    --> src/main.rs:531:38
[INFO] [stderr]     |
[INFO] [stderr] 531 | ...                   .fold("".to_string(), |acc, (i,x)| {
[INFO] [stderr]     |                                                    ^ help: if this is intentional, prefix it with an underscore: `_i`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `x`
[INFO] [stderr]    --> src/main.rs:531:40
[INFO] [stderr]     |
[INFO] [stderr] 531 | ...                   .fold("".to_string(), |acc, (i,x)| {
[INFO] [stderr]     |                                                      ^ help: if this is intentional, prefix it with an underscore: `_x`
[INFO] [stderr] 
[INFO] [stderr] warning: 3 warnings emitted
[INFO] [stderr] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.02s
[INFO] [stderr]      Running unittests (/opt/rustwide/target/debug/deps/euler-464e259fbfa05d12)
[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" "d443f7ddc0d68579e392d412ddf7677f473dbf083f7a4a0cc3724a28df42290e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "d443f7ddc0d68579e392d412ddf7677f473dbf083f7a4a0cc3724a28df42290e", kill_on_drop: false }`
[INFO] [stdout] d443f7ddc0d68579e392d412ddf7677f473dbf083f7a4a0cc3724a28df42290e