[INFO] updating cached repository https://github.com/alvidir/sylvan
[INFO] running `"git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "-c" "remote.origin.fetch=refs/heads/*:refs/heads/*" "fetch" "origin" "--force" "--prune"`
[INFO] [stderr] From https://github.com/alvidir/sylvan
[INFO] [stderr]    fabdca7..d1cfe99  master     -> master
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] d1cfe99c5d9de3e2f1fea5866313baaff7f65150
[INFO] checking alvidir/sylvan against try#3738e44c8fffe9e1fdfda9304a4df74ce7b29152 for pr-68746
[INFO] running `"git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Falvidir%2Fsylvan" "/workspace/builds/worker-0/source"`
[INFO] [stderr] Cloning into '/workspace/builds/worker-0/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/alvidir/sylvan on toolchain 3738e44c8fffe9e1fdfda9304a4df74ce7b29152
[INFO] running `"/workspace/cargo-home/bin/cargo" "+3738e44c8fffe9e1fdfda9304a4df74ce7b29152" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started tweaking git repo https://github.com/alvidir/sylvan
[INFO] finished tweaking git repo https://github.com/alvidir/sylvan
[INFO] tweaked toml for git repo https://github.com/alvidir/sylvan written to /workspace/builds/worker-0/source/Cargo.toml
[INFO] crate git repo https://github.com/alvidir/sylvan already has a lockfile, it will not be regenerated
[INFO] running `"/workspace/cargo-home/bin/cargo" "+3738e44c8fffe9e1fdfda9304a4df74ce7b29152" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `"docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/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" "+3738e44c8fffe9e1fdfda9304a4df74ce7b29152" "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] 2251f0ee956a671605a31e959505fb6aec8f3d429cb038aab510cf8abec04221
[INFO] running `"docker" "start" "-a" "2251f0ee956a671605a31e959505fb6aec8f3d429cb038aab510cf8abec04221"`
[INFO] [stderr]     Checking sylvan v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr] warning: unused variable: `args`
[INFO] [stderr]   --> src/encode/context.rs:22:19
[INFO] [stderr]    |
[INFO] [stderr] 22 | pub fn getContext(args: &Vec<String> ) -> Context {
[INFO] [stderr]    |                   ^^^^ help: consider prefixing with an underscore: `_args`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `ctx`
[INFO] [stderr]  --> src/encode/marshal.rs:4:9
[INFO] [stderr]   |
[INFO] [stderr] 4 |     let ctx: Context = getContext(args);
[INFO] [stderr]   |         ^^^ help: consider prefixing with an underscore: `_ctx`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `args`
[INFO] [stderr]  --> src/encode/unmarshal.rs:1:18
[INFO] [stderr]   |
[INFO] [stderr] 1 | pub fn unmarshal(args:  &Vec<String> ) -> i32 {
[INFO] [stderr]   |                  ^^^^ help: consider prefixing with an underscore: `_args`
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]   --> src/encode/context.rs:23:9
[INFO] [stderr]    |
[INFO] [stderr] 23 |     let mut ctx: Context = Context{
[INFO] [stderr]    |         ----^^^
[INFO] [stderr]    |         |
[INFO] [stderr]    |         help: remove this `mut`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_mut)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: constant item is never used: `SYMB_SHORT`
[INFO] [stderr]  --> src/universal/constants.rs:4:1
[INFO] [stderr]   |
[INFO] [stderr] 4 | pub const SYMB_SHORT: &str = "-";
[INFO] [stderr]   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: constant item is never used: `SYMB_LONG`
[INFO] [stderr]  --> src/universal/constants.rs:5:1
[INFO] [stderr]   |
[INFO] [stderr] 5 | pub const SYMB_LONG: &str = "--";
[INFO] [stderr]   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: constant item is never used: `SYMB_NAN`
[INFO] [stderr]  --> src/universal/constants.rs:6:1
[INFO] [stderr]   |
[INFO] [stderr] 6 | pub const SYMB_NAN: &str = "NAN";
[INFO] [stderr]   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: constant item is never used: `CODE_NERR`
[INFO] [stderr]   --> src/universal/constants.rs:29:1
[INFO] [stderr]    |
[INFO] [stderr] 29 | pub const CODE_NERR: i32 = 0;
[INFO] [stderr]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `arg`
[INFO] [stderr]  --> src/encode/context.rs:9:5
[INFO] [stderr]   |
[INFO] [stderr] 9 |     fn arg(&self, key: String) -> String{
[INFO] [stderr]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function `getContext` should have a snake case name
[INFO] [stderr]   --> src/encode/context.rs:22:8
[INFO] [stderr]    |
[INFO] [stderr] 22 | pub fn getContext(args: &Vec<String> ) -> Context {
[INFO] [stderr]    |        ^^^^^^^^^^ help: convert the identifier to snake case: `get_context`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(non_snake_case)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `args`
[INFO] [stderr]   --> src/encode/context.rs:22:19
[INFO] [stderr]    |
[INFO] [stderr] 22 | pub fn getContext(args: &Vec<String> ) -> Context {
[INFO] [stderr]    |                   ^^^^ help: consider prefixing with an underscore: `_args`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `ctx`
[INFO] [stderr]  --> src/encode/marshal.rs:4:9
[INFO] [stderr]   |
[INFO] [stderr] 4 |     let ctx: Context = getContext(args);
[INFO] [stderr]   |         ^^^ help: consider prefixing with an underscore: `_ctx`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `args`
[INFO] [stderr]  --> src/encode/unmarshal.rs:1:18
[INFO] [stderr]   |
[INFO] [stderr] 1 | pub fn unmarshal(args:  &Vec<String> ) -> i32 {
[INFO] [stderr]   |                  ^^^^ help: consider prefixing with an underscore: `_args`
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]   --> src/encode/context.rs:23:9
[INFO] [stderr]    |
[INFO] [stderr] 23 |     let mut ctx: Context = Context{
[INFO] [stderr]    |         ----^^^
[INFO] [stderr]    |         |
[INFO] [stderr]    |         help: remove this `mut`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_mut)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: constant item is never used: `SYMB_SHORT`
[INFO] [stderr]  --> src/universal/constants.rs:4:1
[INFO] [stderr]   |
[INFO] [stderr] 4 | pub const SYMB_SHORT: &str = "-";
[INFO] [stderr]   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: constant item is never used: `SYMB_LONG`
[INFO] [stderr]  --> src/universal/constants.rs:5:1
[INFO] [stderr]   |
[INFO] [stderr] 5 | pub const SYMB_LONG: &str = "--";
[INFO] [stderr]   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: constant item is never used: `SYMB_NAN`
[INFO] [stderr]  --> src/universal/constants.rs:6:1
[INFO] [stderr]   |
[INFO] [stderr] 6 | pub const SYMB_NAN: &str = "NAN";
[INFO] [stderr]   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: constant item is never used: `CODE_NERR`
[INFO] [stderr]   --> src/universal/constants.rs:29:1
[INFO] [stderr]    |
[INFO] [stderr] 29 | pub const CODE_NERR: i32 = 0;
[INFO] [stderr]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `arg`
[INFO] [stderr]  --> src/encode/context.rs:9:5
[INFO] [stderr]   |
[INFO] [stderr] 9 |     fn arg(&self, key: String) -> String{
[INFO] [stderr]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function `getContext` should have a snake case name
[INFO] [stderr]   --> src/encode/context.rs:22:8
[INFO] [stderr]    |
[INFO] [stderr] 22 | pub fn getContext(args: &Vec<String> ) -> Context {
[INFO] [stderr]    |        ^^^^^^^^^^ help: convert the identifier to snake case: `get_context`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(non_snake_case)]` on by default
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1.33s
[INFO] running `"docker" "inspect" "2251f0ee956a671605a31e959505fb6aec8f3d429cb038aab510cf8abec04221"`
[INFO] running `"docker" "rm" "-f" "2251f0ee956a671605a31e959505fb6aec8f3d429cb038aab510cf8abec04221"`
[INFO] [stdout] 2251f0ee956a671605a31e959505fb6aec8f3d429cb038aab510cf8abec04221