[INFO] fetching crate intfic 0.3.8...
[INFO] checking intfic-0.3.8 against beta for pr-78714
[INFO] extracting crate intfic 0.3.8 into /workspace/builds/worker-13/source
[INFO] validating manifest of crates.io crate intfic 0.3.8 on toolchain beta
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking crates.io crate intfic 0.3.8
[INFO] finished tweaking crates.io crate intfic 0.3.8
[INFO] tweaked toml for crates.io crate intfic 0.3.8 written to /workspace/builds/worker-13/source/Cargo.toml
[INFO] crate crates.io crate intfic 0.3.8 already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-13/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-13/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@sha256:6eabd152ff4036248d66efda456a36cb33d24b7291b33f25f75140726c88da35" "/opt/rustwide/cargo-home/bin/cargo" "+beta" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 9990c9dd0ed8f65562110e656af178aab3cc86c956e427dd95420ef2faa42c9b
[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" "9990c9dd0ed8f65562110e656af178aab3cc86c956e427dd95420ef2faa42c9b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "9990c9dd0ed8f65562110e656af178aab3cc86c956e427dd95420ef2faa42c9b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "9990c9dd0ed8f65562110e656af178aab3cc86c956e427dd95420ef2faa42c9b", kill_on_drop: false }`
[INFO] [stdout] 9990c9dd0ed8f65562110e656af178aab3cc86c956e427dd95420ef2faa42c9b
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-13/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-13/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@sha256:6eabd152ff4036248d66efda456a36cb33d24b7291b33f25f75140726c88da35" "/opt/rustwide/cargo-home/bin/cargo" "+beta" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] e990d8e56abd8bbd2ecf3a70b89df1e5acc3125c7a9b8cdfa6dc20f69fbbf500
[INFO] running `Command { std: "docker" "start" "-a" "e990d8e56abd8bbd2ecf3a70b89df1e5acc3125c7a9b8cdfa6dc20f69fbbf500", kill_on_drop: false }`
[INFO] [stderr]    Compiling syn v1.0.30
[INFO] [stderr]    Compiling serde v1.0.111
[INFO] [stderr]     Checking colored v1.9.3
[INFO] [stderr]     Checking rand_chacha v0.2.2
[INFO] [stderr]     Checking dirs v2.0.2
[INFO] [stderr]     Checking rand v0.7.3
[INFO] [stderr]    Compiling serde_derive v1.0.111
[INFO] [stderr]     Checking ron v0.6.0
[INFO] [stderr]     Checking intfic v0.3.8 (/opt/rustwide/workdir)
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/parse_file.rs:192:13
[INFO] [stdout]     |
[INFO] [stdout] 192 |         let mut var_split: Vec<&str> = text.split(" = ").collect();
[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/parse_file.rs:200:13
[INFO] [stdout]     |
[INFO] [stdout] 200 |         let mut var_split: Vec<&str> = text.split(" + ").collect();
[INFO] [stdout]     |             ----^^^^^^^^^
[INFO] [stdout]     |             |
[INFO] [stdout]     |             help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/parse_file.rs:208:13
[INFO] [stdout]     |
[INFO] [stdout] 208 |         let mut choice_split: Vec<&str> = text.split(" -> ").collect();
[INFO] [stdout]     |             ----^^^^^^^^^^^^
[INFO] [stdout]     |             |
[INFO] [stdout]     |             help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 3 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/parse_file.rs:192:13
[INFO] [stdout]     |
[INFO] [stdout] 192 |         let mut var_split: Vec<&str> = text.split(" = ").collect();
[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/parse_file.rs:200:13
[INFO] [stdout]     |
[INFO] [stdout] 200 |         let mut var_split: Vec<&str> = text.split(" + ").collect();
[INFO] [stdout]     |             ----^^^^^^^^^
[INFO] [stdout]     |             |
[INFO] [stdout]     |             help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/parse_file.rs:208:13
[INFO] [stdout]     |
[INFO] [stdout] 208 |         let mut choice_split: Vec<&str> = text.split(" -> ").collect();
[INFO] [stdout]     |             ----^^^^^^^^^^^^
[INFO] [stdout]     |             |
[INFO] [stdout]     |             help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 3 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 31.44s
[INFO] running `Command { std: "docker" "inspect" "e990d8e56abd8bbd2ecf3a70b89df1e5acc3125c7a9b8cdfa6dc20f69fbbf500", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "e990d8e56abd8bbd2ecf3a70b89df1e5acc3125c7a9b8cdfa6dc20f69fbbf500", kill_on_drop: false }`
[INFO] [stdout] e990d8e56abd8bbd2ecf3a70b89df1e5acc3125c7a9b8cdfa6dc20f69fbbf500