[INFO] cloning repository https://github.com/sdslabs/gasper-sample-rust
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/sdslabs/gasper-sample-rust" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fsdslabs%2Fgasper-sample-rust", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fsdslabs%2Fgasper-sample-rust'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 60c77934b7827617d837c8ecc77b65ec7e342fed
[INFO] checking sdslabs/gasper-sample-rust against try#f6e2f78768c57172b99c3e85892f867894dc7e30 for pr-75502
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fsdslabs%2Fgasper-sample-rust" "/workspace/builds/worker-0/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-0/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/sdslabs/gasper-sample-rust on toolchain f6e2f78768c57172b99c3e85892f867894dc7e30
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+f6e2f78768c57172b99c3e85892f867894dc7e30" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/sdslabs/gasper-sample-rust
[INFO] finished tweaking git repo https://github.com/sdslabs/gasper-sample-rust
[INFO] tweaked toml for git repo https://github.com/sdslabs/gasper-sample-rust written to /workspace/builds/worker-0/source/Cargo.toml
[INFO] crate git repo https://github.com/sdslabs/gasper-sample-rust already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+f6e2f78768c57172b99c3e85892f867894dc7e30" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded safemem v0.3.3
[INFO] [stderr]   Downloaded smallvec v1.4.0
[INFO] [stderr]   Downloaded itoa v0.4.5
[INFO] [stderr]   Downloaded serde_json v1.0.53
[INFO] [stderr]   Downloaded unicode-normalization v0.1.12
[INFO] [stderr]   Downloaded hermit-abi v0.1.13
[INFO] [stderr]   Downloaded serde v1.0.110
[INFO] [stderr]   Downloaded groupable v0.2.0
[INFO] [stderr]   Downloaded libc v0.2.70
[INFO] [stderr]   Downloaded ryu v1.0.4
[INFO] [stderr]   Downloaded mustache v0.9.0
[INFO] [stderr]   Downloaded hyper v0.10.16
[INFO] [stderr]   Downloaded aho-corasick v0.7.10
[INFO] [stderr]   Downloaded unsafe-any v0.4.2
[INFO] [stderr]   Downloaded plugin v0.2.6
[INFO] [stderr]   Downloaded regex v1.3.7
[INFO] [stderr]   Downloaded regex-syntax v0.6.17
[INFO] [stderr]   Downloaded modifier v0.1.0
[INFO] [stderr]   Downloaded nickel v0.11.0
[INFO] [stderr]   Downloaded typemap v0.3.3
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/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:a636fd89d022f18117e1dc8fb37a0a009933cdbbe082814857f0e2024962d47c" "/opt/rustwide/cargo-home/bin/cargo" "+f6e2f78768c57172b99c3e85892f867894dc7e30" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 7a968726e6737eb2fa8e3533670b64c9060d507e1990b4be0ebabe04bff11c4c
[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" "7a968726e6737eb2fa8e3533670b64c9060d507e1990b4be0ebabe04bff11c4c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "7a968726e6737eb2fa8e3533670b64c9060d507e1990b4be0ebabe04bff11c4c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "7a968726e6737eb2fa8e3533670b64c9060d507e1990b4be0ebabe04bff11c4c", kill_on_drop: false }`
[INFO] [stdout] 7a968726e6737eb2fa8e3533670b64c9060d507e1990b4be0ebabe04bff11c4c
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/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:a636fd89d022f18117e1dc8fb37a0a009933cdbbe082814857f0e2024962d47c" "/opt/rustwide/cargo-home/bin/cargo" "+f6e2f78768c57172b99c3e85892f867894dc7e30" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 3262b1a62439daea601e5ffd61fcde7a32948b0459727c6c8b498f7f3e1b1919
[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" "3262b1a62439daea601e5ffd61fcde7a32948b0459727c6c8b498f7f3e1b1919", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.70
[INFO] [stderr]     Checking traitobject v0.1.0
[INFO] [stderr]     Checking matches v0.1.8
[INFO] [stderr]    Compiling serde v1.0.110
[INFO] [stderr]     Checking smallvec v1.4.0
[INFO] [stderr]    Compiling ryu v1.0.4
[INFO] [stderr]     Checking regex-syntax v0.6.17
[INFO] [stderr]     Checking typeable v0.1.2
[INFO] [stderr]     Checking itoa v0.4.5
[INFO] [stderr]     Checking language-tags v0.2.2
[INFO] [stderr]    Compiling unicase v1.4.2
[INFO] [stderr]     Checking base64 v0.9.3
[INFO] [stderr]     Checking log v0.3.9
[INFO] [stderr]     Checking aho-corasick v0.7.10
[INFO] [stderr]     Checking unicode-bidi v0.3.4
[INFO] [stderr]     Checking unsafe-any v0.4.2
[INFO] [stderr]     Checking mime v0.2.6
[INFO] [stderr]     Checking typemap v0.3.3
[INFO] [stderr]     Checking unicode-normalization v0.1.12
[INFO] [stderr]     Checking plugin v0.2.6
[INFO] [stderr]     Checking idna v0.1.5
[INFO] [stderr]     Checking time v0.1.43
[INFO] [stderr]     Checking num_cpus v1.13.0
[INFO] [stderr]     Checking url v1.7.2
[INFO] [stderr]     Checking hyper v0.10.16
[INFO] [stderr]     Checking regex v1.3.7
[INFO] [stderr]     Checking mustache v0.9.0
[INFO] [stderr]     Checking serde_json v1.0.53
[INFO] [stderr]     Checking nickel v0.11.0
[INFO] [stderr]     Checking gasper-sample-rust v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused `std::result::Result` that must be used
[INFO] [stdout]  --> src/main.rs:8:5
[INFO] [stdout]   |
[INFO] [stdout] 8 |     server.listen("0.0.0.0:3000");
[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: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `std::result::Result` that must be used
[INFO] [stdout]  --> src/main.rs:8:5
[INFO] [stdout]   |
[INFO] [stdout] 8 |     server.listen("0.0.0.0:3000");
[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: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 16.48s
[INFO] running `Command { std: "docker" "inspect" "3262b1a62439daea601e5ffd61fcde7a32948b0459727c6c8b498f7f3e1b1919", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "3262b1a62439daea601e5ffd61fcde7a32948b0459727c6c8b498f7f3e1b1919", kill_on_drop: false }`
[INFO] [stdout] 3262b1a62439daea601e5ffd61fcde7a32948b0459727c6c8b498f7f3e1b1919