[INFO] cloning repository https://github.com/dylanalvarez/tp3_concurrentes
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/dylanalvarez/tp3_concurrentes" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fdylanalvarez%2Ftp3_concurrentes", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fdylanalvarez%2Ftp3_concurrentes'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 4ece3569d4d60b976ed1d2320a4bd3c5f0ab5103
[INFO] checking dylanalvarez/tp3_concurrentes against try#07fecb9cf34c4979a772ba38c99d6d9144768413 for pr-87710
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fdylanalvarez%2Ftp3_concurrentes" "/workspace/builds/worker-80/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-80/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/dylanalvarez/tp3_concurrentes on toolchain 07fecb9cf34c4979a772ba38c99d6d9144768413
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+07fecb9cf34c4979a772ba38c99d6d9144768413" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/dylanalvarez/tp3_concurrentes
[INFO] finished tweaking git repo https://github.com/dylanalvarez/tp3_concurrentes
[INFO] tweaked toml for git repo https://github.com/dylanalvarez/tp3_concurrentes written to /workspace/builds/worker-80/source/Cargo.toml
[INFO] crate git repo https://github.com/dylanalvarez/tp3_concurrentes already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+07fecb9cf34c4979a772ba38c99d6d9144768413" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[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-80/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-80/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@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+07fecb9cf34c4979a772ba38c99d6d9144768413" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 14d2e540c7d9cc0329943328e478c7dba62038a4e4799bd72a4bd89d734ca67a
[INFO] running `Command { std: "docker" "start" "-a" "14d2e540c7d9cc0329943328e478c7dba62038a4e4799bd72a4bd89d734ca67a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "14d2e540c7d9cc0329943328e478c7dba62038a4e4799bd72a4bd89d734ca67a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "14d2e540c7d9cc0329943328e478c7dba62038a4e4799bd72a4bd89d734ca67a", kill_on_drop: false }`
[INFO] [stdout] 14d2e540c7d9cc0329943328e478c7dba62038a4e4799bd72a4bd89d734ca67a
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-80/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-80/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" "ghcr.io/rust-lang/crates-build-env/linux@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+07fecb9cf34c4979a772ba38c99d6d9144768413" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 5cb42c51871f958370ce5d5cba2f7483ff75bd5b6d44c83645544c9338468ccf
[INFO] running `Command { std: "docker" "start" "-a" "5cb42c51871f958370ce5d5cba2f7483ff75bd5b6d44c83645544c9338468ccf", kill_on_drop: false }`
[INFO] [stderr]     Checking tp3_concurrentes v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/blockchain_message.rs:93:13
[INFO] [stdout]    |
[INFO] [stdout] 93 |         let mut blockchain = Blockchain::new();
[INFO] [stdout]    |             ----^^^^^^^^^^
[INFO] [stdout]    |             |
[INFO] [stdout]    |             help: remove this `mut`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_mut)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/blockchain_message.rs:102:13
[INFO] [stdout]     |
[INFO] [stdout] 102 |         let mut expected = Blockchain::new();
[INFO] [stdout]     |             ----^^^^^^^^
[INFO] [stdout]     |             |
[INFO] [stdout]     |             help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.34s
[INFO] running `Command { std: "docker" "inspect" "5cb42c51871f958370ce5d5cba2f7483ff75bd5b6d44c83645544c9338468ccf", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "5cb42c51871f958370ce5d5cba2f7483ff75bd5b6d44c83645544c9338468ccf", kill_on_drop: false }`
[INFO] [stdout] 5cb42c51871f958370ce5d5cba2f7483ff75bd5b6d44c83645544c9338468ccf