[INFO] cloning repository https://github.com/ArnoldTumukunde/challanges
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/ArnoldTumukunde/challanges" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FArnoldTumukunde%2Fchallanges", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FArnoldTumukunde%2Fchallanges'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 8084a037416cc9b2e8705f9934d547e35b71a385
[INFO] testing ArnoldTumukunde/challanges against master#d98a5da813da67eb189387b8ccfb73cf481275d8+rustflags=-Copt-level=3 for pr-138759
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FArnoldTumukunde%2Fchallanges" "/workspace/builds/worker-6-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-6-tc1/source'...
[INFO] [stderr] done.
[INFO] started tweaking git repo https://github.com/ArnoldTumukunde/challanges
[INFO] finished tweaking git repo https://github.com/ArnoldTumukunde/challanges
[INFO] tweaked toml for git repo https://github.com/ArnoldTumukunde/challanges written to /workspace/builds/worker-6-tc1/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/ArnoldTumukunde/challanges on toolchain d98a5da813da67eb189387b8ccfb73cf481275d8
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+d98a5da813da67eb189387b8ccfb73cf481275d8" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/ArnoldTumukunde/challanges 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" "+d98a5da813da67eb189387b8ccfb73cf481275d8" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded uuid-macro-internal v1.11.0
[INFO] [stderr]   Downloaded uuid v1.11.0
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+d98a5da813da67eb189387b8ccfb73cf481275d8" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 23f4879af96c4dfc992e470b208fb19f57f8e2212c12475bb7a4d6c638db2b80
[INFO] running `Command { std: "docker" "start" "-a" "23f4879af96c4dfc992e470b208fb19f57f8e2212c12475bb7a4d6c638db2b80", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "23f4879af96c4dfc992e470b208fb19f57f8e2212c12475bb7a4d6c638db2b80", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "23f4879af96c4dfc992e470b208fb19f57f8e2212c12475bb7a4d6c638db2b80", kill_on_drop: false }`
[INFO] [stdout] 23f4879af96c4dfc992e470b208fb19f57f8e2212c12475bb7a4d6c638db2b80
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-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 -Copt-level=3" "-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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+d98a5da813da67eb189387b8ccfb73cf481275d8" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 9bed1b47024da972f48e53fa80244feb2c524c593ebe92f3c5e4e72519dcbfc6
[INFO] running `Command { std: "docker" "start" "-a" "9bed1b47024da972f48e53fa80244feb2c524c593ebe92f3c5e4e72519dcbfc6", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.89
[INFO] [stderr]    Compiling unicode-ident v1.0.13
[INFO] [stderr]    Compiling libc v0.2.161
[INFO] [stderr]    Compiling serde v1.0.213
[INFO] [stderr]    Compiling serde_json v1.0.132
[INFO] [stderr]    Compiling anyhow v1.0.91
[INFO] [stderr]    Compiling quote v1.0.37
[INFO] [stderr]    Compiling syn v2.0.85
[INFO] [stderr]    Compiling getrandom v0.2.15
[INFO] [stderr]    Compiling rand_core v0.6.4
[INFO] [stderr]    Compiling zerocopy-derive v0.7.35
[INFO] [stderr]    Compiling serde_derive v1.0.213
[INFO] [stderr]    Compiling uuid-macro-internal v1.11.0
[INFO] [stderr]    Compiling zerocopy v0.7.35
[INFO] [stderr]    Compiling ppv-lite86 v0.2.20
[INFO] [stderr]    Compiling rand_chacha v0.3.1
[INFO] [stderr]    Compiling rand v0.8.5
[INFO] [stderr]    Compiling uuid v1.11.0
[INFO] [stderr]    Compiling challanges v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused variable: `topology`
[INFO] [stdout]   --> src/echo.rs:99:32
[INFO] [stdout]    |
[INFO] [stdout] 99 |             Payload::Topology{ topology } => {
[INFO] [stdout]    |                                ^^^^^^^^ help: try ignoring the field: `topology: _`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Messages` is never constructed
[INFO] [stdout]  --> src/echo.rs:7:12
[INFO] [stdout]   |
[INFO] [stdout] 7 | pub struct Messages{
[INFO] [stdout]   |            ^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function `new` is never used
[INFO] [stdout]   --> src/echo.rs:12:12
[INFO] [stdout]    |
[INFO] [stdout] 11 | impl Messages {
[INFO] [stdout]    | ------------- associated function in this implementation
[INFO] [stdout] 12 |     pub fn new() -> Messages {
[INFO] [stdout]    |            ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 1m 04s
[INFO] running `Command { std: "docker" "inspect" "9bed1b47024da972f48e53fa80244feb2c524c593ebe92f3c5e4e72519dcbfc6", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "9bed1b47024da972f48e53fa80244feb2c524c593ebe92f3c5e4e72519dcbfc6", kill_on_drop: false }`
[INFO] [stdout] 9bed1b47024da972f48e53fa80244feb2c524c593ebe92f3c5e4e72519dcbfc6
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-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 -Copt-level=3" "-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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+d98a5da813da67eb189387b8ccfb73cf481275d8" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 645bc3bb89166730bae574e03b1c75c8817a456be3056c13ebe0cf0fd861221c
[INFO] running `Command { std: "docker" "start" "-a" "645bc3bb89166730bae574e03b1c75c8817a456be3056c13ebe0cf0fd861221c", kill_on_drop: false }`
[INFO] [stderr]    Compiling challanges v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused variable: `topology`
[INFO] [stdout]   --> src/echo.rs:99:32
[INFO] [stdout]    |
[INFO] [stdout] 99 |             Payload::Topology{ topology } => {
[INFO] [stdout]    |                                ^^^^^^^^ help: try ignoring the field: `topology: _`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Messages` is never constructed
[INFO] [stdout]  --> src/echo.rs:7:12
[INFO] [stdout]   |
[INFO] [stdout] 7 | pub struct Messages{
[INFO] [stdout]   |            ^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function `new` is never used
[INFO] [stdout]   --> src/echo.rs:12:12
[INFO] [stdout]    |
[INFO] [stdout] 11 | impl Messages {
[INFO] [stdout]    | ------------- associated function in this implementation
[INFO] [stdout] 12 |     pub fn new() -> Messages {
[INFO] [stdout]    |            ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.38s
[INFO] running `Command { std: "docker" "inspect" "645bc3bb89166730bae574e03b1c75c8817a456be3056c13ebe0cf0fd861221c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "645bc3bb89166730bae574e03b1c75c8817a456be3056c13ebe0cf0fd861221c", kill_on_drop: false }`
[INFO] [stdout] 645bc3bb89166730bae574e03b1c75c8817a456be3056c13ebe0cf0fd861221c
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-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 -Copt-level=3" "-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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+d98a5da813da67eb189387b8ccfb73cf481275d8" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] 424e94401379d8d2befdb466cc4b802e3ab364af65d9dbabb181a7bbf46b00b2
[INFO] running `Command { std: "docker" "start" "-a" "424e94401379d8d2befdb466cc4b802e3ab364af65d9dbabb181a7bbf46b00b2", kill_on_drop: false }`
[INFO] [stderr] warning: unused variable: `topology`
[INFO] [stderr]   --> src/echo.rs:99:32
[INFO] [stderr]    |
[INFO] [stderr] 99 |             Payload::Topology{ topology } => {
[INFO] [stderr]    |                                ^^^^^^^^ help: try ignoring the field: `topology: _`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: struct `Messages` is never constructed
[INFO] [stderr]  --> src/echo.rs:7:12
[INFO] [stderr]   |
[INFO] [stderr] 7 | pub struct Messages{
[INFO] [stderr]   |            ^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: associated function `new` is never used
[INFO] [stderr]   --> src/echo.rs:12:12
[INFO] [stderr]    |
[INFO] [stderr] 11 | impl Messages {
[INFO] [stderr]    | ------------- associated function in this implementation
[INFO] [stderr] 12 |     pub fn new() -> Messages {
[INFO] [stderr]    |            ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: `challanges` (bin "challanges" test) generated 3 warnings
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.08s
[INFO] [stderr]      Running unittests src/main.rs (/opt/rustwide/target/debug/deps/challanges-833117df6d1c362f)
[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" "424e94401379d8d2befdb466cc4b802e3ab364af65d9dbabb181a7bbf46b00b2", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "424e94401379d8d2befdb466cc4b802e3ab364af65d9dbabb181a7bbf46b00b2", kill_on_drop: false }`
[INFO] [stdout] 424e94401379d8d2befdb466cc4b802e3ab364af65d9dbabb181a7bbf46b00b2
