[INFO] cloning repository https://github.com/dragonlayout/comprehensive-rust
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/dragonlayout/comprehensive-rust" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fdragonlayout%2Fcomprehensive-rust", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fdragonlayout%2Fcomprehensive-rust'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 8e3d167e24f870b1c98c4f562e7e8ff8bbdcee81
[INFO] checking dragonlayout/comprehensive-rust against try#5de9e0e6cf775e94e0de2003f35e183f3f77bfe8 for pr-143808
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fdragonlayout%2Fcomprehensive-rust" "/workspace/builds/worker-7-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-7-tc2/source'...
[INFO] [stderr] done.
[INFO] started tweaking git repo https://github.com/dragonlayout/comprehensive-rust
[INFO] finished tweaking git repo https://github.com/dragonlayout/comprehensive-rust
[INFO] tweaked toml for git repo https://github.com/dragonlayout/comprehensive-rust written to /workspace/builds/worker-7-tc2/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/dragonlayout/comprehensive-rust on toolchain 5de9e0e6cf775e94e0de2003f35e183f3f77bfe8
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+5de9e0e6cf775e94e0de2003f35e183f3f77bfe8" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/dragonlayout/comprehensive-rust 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" "+5de9e0e6cf775e94e0de2003f35e183f3f77bfe8" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr] warning: virtual workspace defaulting to `resolver = "1"` despite one or more workspace members being on edition 2021 which implies `resolver = "2"`
[INFO] [stderr] note: to keep the current resolver, specify `workspace.resolver = "1"` in the workspace root's manifest
[INFO] [stderr] note: to use the edition 2021 resolver, specify `workspace.resolver = "2"` in the workspace root's manifest
[INFO] [stderr] note: for more details see https://doc.rust-lang.org/cargo/reference/resolver.html#resolver-versions
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc2/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:cf8efcab8866f2cf4285301c7418e2f4f2a9b088c91ba69c40d5b659f81557f7" "/opt/rustwide/cargo-home/bin/cargo" "+5de9e0e6cf775e94e0de2003f35e183f3f77bfe8" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 0a90a9d8052a8bac7dcad804962f5fdcd630595973116d66c3c4aef5e95f697a
[INFO] running `Command { std: "docker" "start" "-a" "0a90a9d8052a8bac7dcad804962f5fdcd630595973116d66c3c4aef5e95f697a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "0a90a9d8052a8bac7dcad804962f5fdcd630595973116d66c3c4aef5e95f697a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "0a90a9d8052a8bac7dcad804962f5fdcd630595973116d66c3c4aef5e95f697a", kill_on_drop: false }`
[INFO] [stdout] 0a90a9d8052a8bac7dcad804962f5fdcd630595973116d66c3c4aef5e95f697a
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc2/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" "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:cf8efcab8866f2cf4285301c7418e2f4f2a9b088c91ba69c40d5b659f81557f7" "/opt/rustwide/cargo-home/bin/cargo" "+5de9e0e6cf775e94e0de2003f35e183f3f77bfe8" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] e9b39fc217a3dfe749b2b7ad8928dd8b2f4a2941fcda530fd65082cb9d81905c
[INFO] running `Command { std: "docker" "start" "-a" "e9b39fc217a3dfe749b2b7ad8928dd8b2f4a2941fcda530fd65082cb9d81905c", kill_on_drop: false }`
[INFO] [stderr] warning: virtual workspace defaulting to `resolver = "1"` despite one or more workspace members being on edition 2021 which implies `resolver = "2"`
[INFO] [stderr] note: to keep the current resolver, specify `workspace.resolver = "1"` in the workspace root's manifest
[INFO] [stderr] note: to use the edition 2021 resolver, specify `workspace.resolver = "2"` in the workspace root's manifest
[INFO] [stderr] note: for more details see https://doc.rust-lang.org/cargo/reference/resolver.html#resolver-versions
[INFO] [stderr]     Checking dangling_references v0.1.0 (/opt/rustwide/workdir/day1_morning/dangling_references)
[INFO] [stderr]     Checking function v0.1.0 (/opt/rustwide/workdir/day1_morning/function)
[INFO] [stderr]     Checking references v0.1.0 (/opt/rustwide/workdir/day1_morning/references)
[INFO] [stderr]     Checking method v0.1.0 (/opt/rustwide/workdir/day1_morning/method)
[INFO] [stderr]     Checking simple_example v0.1.0 (/opt/rustwide/workdir/day1_morning/simple_example)
[INFO] [stderr]     Checking library v0.1.0 (/opt/rustwide/workdir/day1_afternoon/library)
[INFO] [stdout] error[E0597]: `x` does not live long enough
[INFO] [stdout]  --> day1_morning/dangling_references/src/main.rs:5:17
[INFO] [stdout]   |
[INFO] [stdout] 4 |         let x: i32 = 10;
[INFO] [stdout]   |             - binding `x` declared here
[INFO] [stdout] 5 |         ref_x = &x;
[INFO] [stdout]   |                 ^^ borrowed value does not live long enough
[INFO] [stdout] 6 |     }
[INFO] [stdout]   |     - `x` dropped here while still borrowed
[INFO] [stdout] 7 |     println!("ref_x: {ref_x}");
[INFO] [stdout]   |                       ----- borrow later used here
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0597`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `dangling_references` (bin "dangling_references" test) due to 1 previous error
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stdout] error[E0597]: `x` does not live long enough
[INFO] [stdout]  --> day1_morning/dangling_references/src/main.rs:5:17
[INFO] [stdout]   |
[INFO] [stdout] 4 |         let x: i32 = 10;
[INFO] [stdout]   |             - binding `x` declared here
[INFO] [stdout] 5 |         ref_x = &x;
[INFO] [stdout]   |                 ^^ borrowed value does not live long enough
[INFO] [stdout] 6 |     }
[INFO] [stdout]   |     - `x` dropped here while still borrowed
[INFO] [stdout] 7 |     println!("ref_x: {ref_x}");
[INFO] [stdout]   |                       ----- borrow later used here
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0597`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `dangling_references` (bin "dangling_references") due to 1 previous error
[INFO] running `Command { std: "docker" "inspect" "e9b39fc217a3dfe749b2b7ad8928dd8b2f4a2941fcda530fd65082cb9d81905c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "e9b39fc217a3dfe749b2b7ad8928dd8b2f4a2941fcda530fd65082cb9d81905c", kill_on_drop: false }`
[INFO] [stdout] e9b39fc217a3dfe749b2b7ad8928dd8b2f4a2941fcda530fd65082cb9d81905c