[INFO] cloning repository https://github.com/hassanin/rustlearning
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/hassanin/rustlearning" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fhassanin%2Frustlearning", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fhassanin%2Frustlearning'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] df44adf37d1f0527545ac1494fc05a4b24e36d1e
[INFO] checking hassanin/rustlearning against master#4fa76a4a7742bb9c1febe33019f5a9e7e4839a65 for pr-83744
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fhassanin%2Frustlearning" "/workspace/builds/worker-8/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-8/source'...
[INFO] [stderr] done.
[INFO] [stderr] Updating files:  78% (277/354)
Updating files:  79% (280/354)
Updating files:  80% (284/354)
Updating files:  81% (287/354)
Updating files:  82% (291/354)
Updating files:  83% (294/354)
Updating files:  84% (298/354)
Updating files:  85% (301/354)
Updating files:  86% (305/354)
Updating files:  87% (308/354)
Updating files:  88% (312/354)
Updating files:  89% (316/354)
Updating files:  90% (319/354)
Updating files:  91% (323/354)
Updating files:  92% (326/354)
Updating files:  93% (330/354)
Updating files:  94% (333/354)
Updating files:  95% (337/354)
Updating files:  96% (340/354)
Updating files:  97% (344/354)
Updating files:  98% (347/354)
Updating files:  99% (351/354)
Updating files: 100% (354/354)
Updating files: 100% (354/354), done.
[INFO] validating manifest of git repo https://github.com/hassanin/rustlearning on toolchain 4fa76a4a7742bb9c1febe33019f5a9e7e4839a65
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+4fa76a4a7742bb9c1febe33019f5a9e7e4839a65" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/hassanin/rustlearning
[INFO] finished tweaking git repo https://github.com/hassanin/rustlearning
[INFO] tweaked toml for git repo https://github.com/hassanin/rustlearning written to /workspace/builds/worker-8/source/Cargo.toml
[INFO] crate git repo https://github.com/hassanin/rustlearning already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+4fa76a4a7742bb9c1febe33019f5a9e7e4839a65" "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-8/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/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@sha256:20528e8c29e4536546f0102ce88568b16ea7538393a33fcca951030f7af10457" "/opt/rustwide/cargo-home/bin/cargo" "+4fa76a4a7742bb9c1febe33019f5a9e7e4839a65" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 108150d6e2ed4379775dbfbf936795ecd6097656afbe81a78d78607c1dfe82bd
[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" "108150d6e2ed4379775dbfbf936795ecd6097656afbe81a78d78607c1dfe82bd", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "108150d6e2ed4379775dbfbf936795ecd6097656afbe81a78d78607c1dfe82bd", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "108150d6e2ed4379775dbfbf936795ecd6097656afbe81a78d78607c1dfe82bd", kill_on_drop: false }`
[INFO] [stdout] 108150d6e2ed4379775dbfbf936795ecd6097656afbe81a78d78607c1dfe82bd
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/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@sha256:20528e8c29e4536546f0102ce88568b16ea7538393a33fcca951030f7af10457" "/opt/rustwide/cargo-home/bin/cargo" "+4fa76a4a7742bb9c1febe33019f5a9e7e4839a65" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 5f4a602354c36d323f10ac268581bf8327fd9efff7fc199248b5d35874bbe1e0
[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" "5f4a602354c36d323f10ac268581bf8327fd9efff7fc199248b5d35874bbe1e0", kill_on_drop: false }`
[INFO] [stderr]    Compiling syn v1.0.58
[INFO] [stderr]    Compiling serde_json v1.0.61
[INFO] [stderr]    Compiling quote v1.0.8
[INFO] [stderr]    Compiling serde_derive v1.0.118
[INFO] [stderr]     Checking serde v1.0.118
[INFO] [stderr]     Checking libraries v0.1.0 (/opt/rustwide/workdir/src/libraries)
[INFO] [stdout] error[E0726]: implicit elided lifetime not allowed here
[INFO] [stdout]   --> src/libraries/src/lib.rs:87:32
[INFO] [stdout]    |
[INFO] [stdout] 87 | impl FromStringMohamed for Box<Employee<_>> {
[INFO] [stdout]    |                                ^^^^^^^^^^^ help: indicate the anonymous lifetime: `Employee<'_, _>`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::process::Output`
[INFO] [stdout]  --> src/libraries/src/lib.rs:2:5
[INFO] [stdout]   |
[INFO] [stdout] 2 | use std::process::Output;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait `myCustom` should have an upper camel case name
[INFO] [stdout]   --> src/libraries/src/lib.rs:72:11
[INFO] [stdout]    |
[INFO] [stdout] 72 | pub trait myCustom {
[INFO] [stdout]    |           ^^^^^^^^ help: convert the identifier to upper camel case: `MyCustom`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(non_camel_case_types)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0107]: this struct takes 0 type arguments but 1 type argument was supplied
[INFO] [stdout]   --> src/libraries/src/lib.rs:87:32
[INFO] [stdout]    |
[INFO] [stdout] 87 | impl FromStringMohamed for Box<Employee<_>> {
[INFO] [stdout]    |                                ^^^^^^^^ - help: remove this type argument
[INFO] [stdout]    |                                |
[INFO] [stdout]    |                                expected 0 type arguments
[INFO] [stdout]    |
[INFO] [stdout] note: struct defined here, with 0 type parameters
[INFO] [stdout]   --> src/libraries/src/lib.rs:29:12
[INFO] [stdout]    |
[INFO] [stdout] 29 | pub struct Employee<'a> {
[INFO] [stdout]    |            ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0106]: missing lifetime specifier
[INFO] [stdout]   --> src/libraries/src/lib.rs:88:32
[INFO] [stdout]    |
[INFO] [stdout] 88 |     type Output = Box<Employee<_>>;
[INFO] [stdout]    |                                ^ expected named lifetime parameter
[INFO] [stdout]    |
[INFO] [stdout] help: consider introducing a named lifetime parameter
[INFO] [stdout]    |
[INFO] [stdout] 88 |     type Output<'a> = Box<Employee<'a, _>>;
[INFO] [stdout]    |                ^^^^                ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0121]: the type placeholder `_` is not allowed within types on item signatures
[INFO] [stdout]   --> src/libraries/src/lib.rs:87:41
[INFO] [stdout]    |
[INFO] [stdout] 87 | impl FromStringMohamed for Box<Employee<_>> {
[INFO] [stdout]    |                                         ^ not allowed in type signatures
[INFO] [stdout]    |
[INFO] [stdout] help: use type parameters instead
[INFO] [stdout]    |
[INFO] [stdout] 87 | impl<T> FromStringMohamed for Box<Employee<T>> {
[INFO] [stdout]    |     ^^^                                    ^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0107]: this struct takes 0 type arguments but 1 type argument was supplied
[INFO] [stdout]   --> src/libraries/src/lib.rs:88:23
[INFO] [stdout]    |
[INFO] [stdout] 88 |     type Output = Box<Employee<_>>;
[INFO] [stdout]    |                       ^^^^^^^^ - help: remove this type argument
[INFO] [stdout]    |                       |
[INFO] [stdout]    |                       expected 0 type arguments
[INFO] [stdout]    |
[INFO] [stdout] note: struct defined here, with 0 type parameters
[INFO] [stdout]   --> src/libraries/src/lib.rs:29:12
[INFO] [stdout]    |
[INFO] [stdout] 29 | pub struct Employee<'a> {
[INFO] [stdout]    |            ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0121]: the type placeholder `_` is not allowed within types on item signatures
[INFO] [stdout]   --> src/libraries/src/lib.rs:88:32
[INFO] [stdout]    |
[INFO] [stdout] 88 |     type Output = Box<Employee<_>>;
[INFO] [stdout]    |                                ^ not allowed in type signatures
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 6 previous errors; 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] Some errors have detailed explanations: E0106, E0107, E0121.
[INFO] [stdout] 
[INFO] [stdout] For more information about an error, try `rustc --explain E0106`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `libraries`
[INFO] [stderr] 
[INFO] [stderr] To learn more, run the command again with --verbose.
[INFO] running `Command { std: "docker" "inspect" "5f4a602354c36d323f10ac268581bf8327fd9efff7fc199248b5d35874bbe1e0", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "5f4a602354c36d323f10ac268581bf8327fd9efff7fc199248b5d35874bbe1e0", kill_on_drop: false }`
[INFO] [stdout] 5f4a602354c36d323f10ac268581bf8327fd9efff7fc199248b5d35874bbe1e0