[INFO] cloning repository https://github.com/zcericola/rust-presentation
[INFO] running `"git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/zcericola/rust-presentation" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fzcericola%2Frust-presentation"`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fzcericola%2Frust-presentation'...
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] 9c5f1f1383fc1e9fbb72e8186c4cdfc0709992a2
[INFO] checking zcericola/rust-presentation against try#e4dba30b9b475d8750370c4dfb49b6541990904d for pr-71393
[INFO] running `"git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fzcericola%2Frust-presentation" "/workspace/builds/worker-7/source"`
[INFO] [stderr] Cloning into '/workspace/builds/worker-7/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/zcericola/rust-presentation on toolchain e4dba30b9b475d8750370c4dfb49b6541990904d
[INFO] running `"/workspace/cargo-home/bin/cargo" "+e4dba30b9b475d8750370c4dfb49b6541990904d" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started tweaking git repo https://github.com/zcericola/rust-presentation
[INFO] finished tweaking git repo https://github.com/zcericola/rust-presentation
[INFO] tweaked toml for git repo https://github.com/zcericola/rust-presentation written to /workspace/builds/worker-7/source/Cargo.toml
[INFO] crate git repo https://github.com/zcericola/rust-presentation already has a lockfile, it will not be regenerated
[INFO] running `"/workspace/cargo-home/bin/cargo" "+e4dba30b9b475d8750370c4dfb49b6541990904d" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/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=forbid" "-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" "/opt/rustwide/cargo-home/bin/cargo" "+e4dba30b9b475d8750370c4dfb49b6541990904d" "check" "--frozen" "--all" "--all-targets"`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] 1cb532c424e846f780e9fa8630cc83435658120895e662aaffd5207d3566730a
[INFO] running `"docker" "start" "-a" "1cb532c424e846f780e9fa8630cc83435658120895e662aaffd5207d3566730a"`
[INFO] [stderr]     Checking rust-presentation v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr] error[E0384]: cannot assign twice to immutable variable `x`
[INFO] [stderr]   --> src/variables/mod.rs:14:5
[INFO] [stderr]    |
[INFO] [stderr] 12 |     let x = 5;
[INFO] [stderr]    |         -
[INFO] [stderr]    |         |
[INFO] [stderr]    |         first assignment to `x`
[INFO] [stderr]    |         help: make this binding mutable: `mut x`
[INFO] [stderr] 13 |     println!("The value of x is {}", x);
[INFO] [stderr] 14 |     x = 6;
[INFO] [stderr]    |     ^^^^^ cannot assign twice to immutable variable
[INFO] [stderr] 
[INFO] [stderr] error: aborting due to previous error
[INFO] [stderr] 
[INFO] [stderr] For more information about this error, try `rustc --explain E0384`.
[INFO] [stderr] error: could not compile `rust-presentation`.
[INFO] [stderr] 
[INFO] [stderr] To learn more, run the command again with --verbose.
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stderr] error[E0384]: cannot assign twice to immutable variable `x`
[INFO] [stderr]   --> src/variables/mod.rs:14:5
[INFO] [stderr]    |
[INFO] [stderr] 12 |     let x = 5;
[INFO] [stderr]    |         -
[INFO] [stderr]    |         |
[INFO] [stderr]    |         first assignment to `x`
[INFO] [stderr]    |         help: make this binding mutable: `mut x`
[INFO] [stderr] 13 |     println!("The value of x is {}", x);
[INFO] [stderr] 14 |     x = 6;
[INFO] [stderr]    |     ^^^^^ cannot assign twice to immutable variable
[INFO] [stderr] 
[INFO] [stderr] error: aborting due to previous error
[INFO] [stderr] 
[INFO] [stderr] For more information about this error, try `rustc --explain E0384`.
[INFO] [stderr] error: could not compile `rust-presentation`.
[INFO] [stderr] 
[INFO] [stderr] To learn more, run the command again with --verbose.
[INFO] running `"docker" "inspect" "1cb532c424e846f780e9fa8630cc83435658120895e662aaffd5207d3566730a"`
[INFO] running `"docker" "rm" "-f" "1cb532c424e846f780e9fa8630cc83435658120895e662aaffd5207d3566730a"`
[INFO] [stdout] 1cb532c424e846f780e9fa8630cc83435658120895e662aaffd5207d3566730a