[INFO] cloning repository https://github.com/RyanBluth/todo
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/RyanBluth/todo" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FRyanBluth%2Ftodo", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FRyanBluth%2Ftodo'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 5ad879185f0284862d3594d52f96cf0e4dca9aca
[INFO] checking RyanBluth/todo against try#f47dd4da3ae8c32c9e65d307bfe640b143e674df for pr-77526
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FRyanBluth%2Ftodo" "/workspace/builds/worker-2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-2/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/RyanBluth/todo on toolchain f47dd4da3ae8c32c9e65d307bfe640b143e674df
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+f47dd4da3ae8c32c9e65d307bfe640b143e674df" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/RyanBluth/todo
[INFO] finished tweaking git repo https://github.com/RyanBluth/todo
[INFO] tweaked toml for git repo https://github.com/RyanBluth/todo written to /workspace/builds/worker-2/source/Cargo.toml
[INFO] crate git repo https://github.com/RyanBluth/todo already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+f47dd4da3ae8c32c9e65d307bfe640b143e674df" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded synstructure v0.9.0
[INFO] [stderr]   Downloaded utf8-ranges v1.0.1
[INFO] [stderr]   Downloaded serde v1.0.79
[INFO] [stderr]   Downloaded failure v0.1.2
[INFO] [stderr]   Downloaded quote v0.6.8
[INFO] [stderr]   Downloaded proc-macro2 v0.4.20
[INFO] [stderr]   Downloaded wcwidth v1.0.1
[INFO] [stderr]   Downloaded syn v0.15.9
[INFO] [stderr]   Downloaded serde_json v1.0.32
[INFO] [stderr]   Downloaded serde_derive v1.0.79
[INFO] [stderr]   Downloaded aho-corasick v0.6.8
[INFO] [stderr]   Downloaded memchr v2.1.0
[INFO] [stderr]   Downloaded regex v1.0.5
[INFO] [stderr]   Downloaded failure_derive v0.1.2
[INFO] [stderr]   Downloaded ryu v0.2.6
[INFO] [stderr]   Downloaded term-table v0.1.6
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/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:d92eaeed33fa75130ca1ee6c8a01d1ffb62bac859dfdfb3450e3e5d1c0146529" "/opt/rustwide/cargo-home/bin/cargo" "+f47dd4da3ae8c32c9e65d307bfe640b143e674df" "metadata" "--no-deps" "--format-version=1", 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] 8f4d8936cf1b9b162af9b4f8091fa1fac1592180a7ee9689547a4ac7d6cf5c17
[INFO] running `Command { std: "docker" "start" "-a" "8f4d8936cf1b9b162af9b4f8091fa1fac1592180a7ee9689547a4ac7d6cf5c17", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "8f4d8936cf1b9b162af9b4f8091fa1fac1592180a7ee9689547a4ac7d6cf5c17", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "8f4d8936cf1b9b162af9b4f8091fa1fac1592180a7ee9689547a4ac7d6cf5c17", kill_on_drop: false }`
[INFO] [stdout] 8f4d8936cf1b9b162af9b4f8091fa1fac1592180a7ee9689547a4ac7d6cf5c17
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/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:d92eaeed33fa75130ca1ee6c8a01d1ffb62bac859dfdfb3450e3e5d1c0146529" "/opt/rustwide/cargo-home/bin/cargo" "+f47dd4da3ae8c32c9e65d307bfe640b143e674df" "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] 2b51af38acf9753d978b70f25525f55e262b4da5f51ccf4ca586bd90b50c174c
[INFO] running `Command { std: "docker" "start" "-a" "2b51af38acf9753d978b70f25525f55e262b4da5f51ccf4ca586bd90b50c174c", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v0.4.20
[INFO] [stderr]    Compiling serde v1.0.79
[INFO] [stderr]     Checking ucd-util v0.1.1
[INFO] [stderr]    Compiling failure_derive v0.1.2
[INFO] [stderr]    Compiling regex v1.0.5
[INFO] [stderr]     Checking utf8-ranges v1.0.1
[INFO] [stderr]     Checking rustc-demangle v0.1.9
[INFO] [stderr]     Checking ansi_term v0.11.0
[INFO] [stderr]     Checking strsim v0.7.0
[INFO] [stderr]     Checking vec_map v0.8.1
[INFO] [stderr]     Checking wcwidth v1.0.1
[INFO] [stderr]     Checking atty v0.2.11
[INFO] [stderr]    Compiling lazy_static v1.1.0
[INFO] [stderr]    Compiling memchr v2.1.0
[INFO] [stderr]     Checking textwrap v0.10.0
[INFO] [stderr]    Compiling backtrace-sys v0.1.24
[INFO] [stderr]     Checking regex-syntax v0.6.2
[INFO] [stderr]     Checking clap v2.32.0
[INFO] [stderr]     Checking thread_local v0.3.6
[INFO] [stderr]     Checking aho-corasick v0.6.8
[INFO] [stderr]    Compiling quote v0.6.8
[INFO] [stderr]     Checking backtrace v0.3.9
[INFO] [stderr]    Compiling syn v0.14.9
[INFO] [stderr]    Compiling syn v0.15.9
[INFO] [stderr]     Checking term-table v0.1.6
[INFO] [stderr]    Compiling serde_derive v1.0.79
[INFO] [stderr]     Checking serde_json v1.0.32
[INFO] [stderr]     Checking chrono v0.4.6
[INFO] [stderr]    Compiling synstructure v0.9.0
[INFO] [stderr]     Checking failure v0.1.2
[INFO] [stderr]     Checking todo v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused imports: `Deserialize`, `Serialize`
[INFO] [stdout]  --> src/todo/types.rs:2:13
[INFO] [stdout]   |
[INFO] [stdout] 2 | use serde::{Serialize, Deserialize};
[INFO] [stdout]   |             ^^^^^^^^^  ^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `metadata`
[INFO] [stdout]  --> src/todo/types.rs:3:15
[INFO] [stdout]   |
[INFO] [stdout] 3 | use std::fs::{metadata, File, OpenOptions};
[INFO] [stdout]   |               ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `Deserialize`, `Serialize`
[INFO] [stdout]  --> src/todo/types.rs:2:13
[INFO] [stdout]   |
[INFO] [stdout] 2 | use serde::{Serialize, Deserialize};
[INFO] [stdout]   |             ^^^^^^^^^  ^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `metadata`
[INFO] [stdout]  --> src/todo/types.rs:3:15
[INFO] [stdout]   |
[INFO] [stdout] 3 | use std::fs::{metadata, File, OpenOptions};
[INFO] [stdout]   |               ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/main.rs:64:13
[INFO] [stdout]    |
[INFO] [stdout] 64 |         let mut collection = ToDoCollection::load()?;
[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/main.rs:64:13
[INFO] [stdout]    |
[INFO] [stdout] 64 |         let mut collection = ToDoCollection::load()?;
[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: 3 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 3 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1m 06s
[INFO] running `Command { std: "docker" "inspect" "2b51af38acf9753d978b70f25525f55e262b4da5f51ccf4ca586bd90b50c174c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "2b51af38acf9753d978b70f25525f55e262b4da5f51ccf4ca586bd90b50c174c", kill_on_drop: false }`
[INFO] [stdout] 2b51af38acf9753d978b70f25525f55e262b4da5f51ccf4ca586bd90b50c174c