[INFO] updating cached repository https://github.com/vijaysharmay/rust-session-part-1
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "-c" "remote.origin.fetch=refs/heads/*:refs/heads/*" "fetch" "origin" "--force" "--prune", kill_on_drop: false }`
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] c2d2d75c76d8f4dac56cc464f257337e34de687a
[INFO] testing vijaysharmay/rust-session-part-1 against beta-2020-07-24 for beta-1.46-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fvijaysharmay%2Frust-session-part-1" "/workspace/builds/worker-10/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-10/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/vijaysharmay/rust-session-part-1 on toolchain beta-2020-07-24
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2020-07-24" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/vijaysharmay/rust-session-part-1
[INFO] finished tweaking git repo https://github.com/vijaysharmay/rust-session-part-1
[INFO] tweaked toml for git repo https://github.com/vijaysharmay/rust-session-part-1 written to /workspace/builds/worker-10/source/Cargo.toml
[INFO] crate git repo https://github.com/vijaysharmay/rust-session-part-1 already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2020-07-24" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-10/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-10/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" "MAP_USER_ID=0" "-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" "--network" "none" "rustops/crates-build-env@sha256:a636fd89d022f18117e1dc8fb37a0a009933cdbbe082814857f0e2024962d47c" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2020-07-24" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 5ac4783822abbd9aec89be33b4be4b90ee3d23dbe715919ef9b92716a6ad7abd
[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" "5ac4783822abbd9aec89be33b4be4b90ee3d23dbe715919ef9b92716a6ad7abd", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "5ac4783822abbd9aec89be33b4be4b90ee3d23dbe715919ef9b92716a6ad7abd", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "5ac4783822abbd9aec89be33b4be4b90ee3d23dbe715919ef9b92716a6ad7abd", kill_on_drop: false }`
[INFO] [stdout] 5ac4783822abbd9aec89be33b4be4b90ee3d23dbe715919ef9b92716a6ad7abd
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-10/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-10/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" "MAP_USER_ID=0" "-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" "--network" "none" "rustops/crates-build-env@sha256:a636fd89d022f18117e1dc8fb37a0a009933cdbbe082814857f0e2024962d47c" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2020-07-24" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] e9f48212031011cf4efd1ae5553b0043f073202e84a0286d2881177e0e67c7d7
[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" "e9f48212031011cf4efd1ae5553b0043f073202e84a0286d2881177e0e67c7d7", kill_on_drop: false }`
[INFO] [stderr]    Compiling rust-techtonic-session v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: value assigned to `a1` is never read
[INFO] [stdout]   --> src/lesson_1.rs:16:9
[INFO] [stdout]    |
[INFO] [stdout] 16 |     let mut a1: i32 = 1;
[INFO] [stdout]    |         ^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_assignments)]` on by default
[INFO] [stdout]    = help: maybe it is overwritten before being read?
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 2.28s
[INFO] running `Command { std: "docker" "inspect" "e9f48212031011cf4efd1ae5553b0043f073202e84a0286d2881177e0e67c7d7", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "e9f48212031011cf4efd1ae5553b0043f073202e84a0286d2881177e0e67c7d7", kill_on_drop: false }`
[INFO] [stdout] e9f48212031011cf4efd1ae5553b0043f073202e84a0286d2881177e0e67c7d7
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-10/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-10/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" "MAP_USER_ID=0" "-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" "--network" "none" "rustops/crates-build-env@sha256:a636fd89d022f18117e1dc8fb37a0a009933cdbbe082814857f0e2024962d47c" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2020-07-24" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 991a2e7c74fd8c4d02259e346283086ed8af8efb6b0c5625339e80f5e85cc9e9
[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" "991a2e7c74fd8c4d02259e346283086ed8af8efb6b0c5625339e80f5e85cc9e9", kill_on_drop: false }`
[INFO] [stderr]    Compiling rust-techtonic-session v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: value assigned to `a1` is never read
[INFO] [stdout]   --> src/lesson_1.rs:16:9
[INFO] [stdout]    |
[INFO] [stdout] 16 |     let mut a1: i32 = 1;
[INFO] [stdout]    |         ^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_assignments)]` on by default
[INFO] [stdout]    = help: maybe it is overwritten before being read?
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 1.02s
[INFO] running `Command { std: "docker" "inspect" "991a2e7c74fd8c4d02259e346283086ed8af8efb6b0c5625339e80f5e85cc9e9", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "991a2e7c74fd8c4d02259e346283086ed8af8efb6b0c5625339e80f5e85cc9e9", kill_on_drop: false }`
[INFO] [stdout] 991a2e7c74fd8c4d02259e346283086ed8af8efb6b0c5625339e80f5e85cc9e9
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-10/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-10/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" "MAP_USER_ID=0" "-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" "--network" "none" "rustops/crates-build-env@sha256:a636fd89d022f18117e1dc8fb37a0a009933cdbbe082814857f0e2024962d47c" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2020-07-24" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] 906fe7bca46dfce79ea0cab95944b32565d17d14b03dbc0c2a292e41d032e412
[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" "906fe7bca46dfce79ea0cab95944b32565d17d14b03dbc0c2a292e41d032e412", kill_on_drop: false }`
[INFO] [stdout] 
[INFO] [stderr] warning: value assigned to `a1` is never read
[INFO] [stdout] running 0 tests
[INFO] [stderr]   --> src/lesson_1.rs:16:9
[INFO] [stdout] 
[INFO] [stderr]    |
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
[INFO] [stderr] 16 |     let mut a1: i32 = 1;
[INFO] [stdout] 
[INFO] [stderr]    |         ^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_assignments)]` on by default
[INFO] [stderr]    = help: maybe it is overwritten before being read?
[INFO] [stderr] 
[INFO] [stderr] warning: 1 warning emitted
[INFO] [stderr] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.02s
[INFO] [stderr]      Running /opt/rustwide/target/debug/deps/rust_techtonic_session-21d0e8317d8233c2
[INFO] running `Command { std: "docker" "inspect" "906fe7bca46dfce79ea0cab95944b32565d17d14b03dbc0c2a292e41d032e412", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "906fe7bca46dfce79ea0cab95944b32565d17d14b03dbc0c2a292e41d032e412", kill_on_drop: false }`
[INFO] [stdout] 906fe7bca46dfce79ea0cab95944b32565d17d14b03dbc0c2a292e41d032e412