[INFO] cloning repository https://github.com/zhaomengru2015/rust-example
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/zhaomengru2015/rust-example" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fzhaomengru2015%2Frust-example", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fzhaomengru2015%2Frust-example'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] a6befc20b84b53ae161bc3c8f28534a800598672
[INFO] testing zhaomengru2015/rust-example against master#a77da2d454e6caa227a85b16410b95f93495e7e0 for pr-91031
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fzhaomengru2015%2Frust-example" "/workspace/builds/worker-0/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-0/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/zhaomengru2015/rust-example on toolchain a77da2d454e6caa227a85b16410b95f93495e7e0
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+a77da2d454e6caa227a85b16410b95f93495e7e0" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/zhaomengru2015/rust-example
[INFO] finished tweaking git repo https://github.com/zhaomengru2015/rust-example
[INFO] tweaked toml for git repo https://github.com/zhaomengru2015/rust-example written to /workspace/builds/worker-0/source/Cargo.toml
[INFO] crate git repo https://github.com/zhaomengru2015/rust-example already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+a77da2d454e6caa227a85b16410b95f93495e7e0" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "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" "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@sha256:5736fa189c1c60b01babf4b8b698fe57b6ecc41933a7ff2e0b8d7a221459412b" "/opt/rustwide/cargo-home/bin/cargo" "+a77da2d454e6caa227a85b16410b95f93495e7e0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] fd73eec959ac7c80cbf8e8f560899bcdc39fed626af1b21557a3f406d50732a3
[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" "fd73eec959ac7c80cbf8e8f560899bcdc39fed626af1b21557a3f406d50732a3", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "fd73eec959ac7c80cbf8e8f560899bcdc39fed626af1b21557a3f406d50732a3", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "fd73eec959ac7c80cbf8e8f560899bcdc39fed626af1b21557a3f406d50732a3", kill_on_drop: false }`
[INFO] [stdout] fd73eec959ac7c80cbf8e8f560899bcdc39fed626af1b21557a3f406d50732a3
[INFO] running `Command { std: "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" "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@sha256:5736fa189c1c60b01babf4b8b698fe57b6ecc41933a7ff2e0b8d7a221459412b" "/opt/rustwide/cargo-home/bin/cargo" "+a77da2d454e6caa227a85b16410b95f93495e7e0" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 8004fb60c06ec93bb2a31df1aca37b2c138ffeaa9265a022c73c1a250cc7ba88
[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" "8004fb60c06ec93bb2a31df1aca37b2c138ffeaa9265a022c73c1a250cc7ba88", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.28
[INFO] [stderr]    Compiling autocfg v1.0.1
[INFO] [stderr]    Compiling syn v1.0.75
[INFO] [stderr]    Compiling futures-core v0.3.16
[INFO] [stderr]    Compiling libc v0.2.97
[INFO] [stderr]    Compiling proc-macro-hack v0.5.19
[INFO] [stderr]    Compiling proc-macro-nested v0.1.7
[INFO] [stderr]    Compiling futures-task v0.3.16
[INFO] [stderr]    Compiling futures-channel v0.3.16
[INFO] [stderr]    Compiling cfg-if v1.0.0
[INFO] [stderr]    Compiling futures-sink v0.3.16
[INFO] [stderr]    Compiling pin-utils v0.1.0
[INFO] [stderr]    Compiling slab v0.4.4
[INFO] [stderr]    Compiling futures-io v0.3.16
[INFO] [stderr]    Compiling ppv-lite86 v0.2.10
[INFO] [stderr]    Compiling futures-macro v0.3.16
[INFO] [stderr]    Compiling futures-util v0.3.16
[INFO] [stderr]    Compiling quote v1.0.9
[INFO] [stderr]    Compiling getrandom v0.2.3
[INFO] [stderr]    Compiling rand_core v0.6.3
[INFO] [stderr]    Compiling rand_chacha v0.3.1
[INFO] [stderr]    Compiling rand v0.8.4
[INFO] [stderr]    Compiling pin-project-internal v1.0.8
[INFO] [stderr]    Compiling pin-project v1.0.8
[INFO] [stderr]    Compiling futures-executor v0.3.16
[INFO] [stderr]    Compiling futures v0.3.16
[INFO] [stderr]    Compiling example v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] error[E0308]: mismatched types
[INFO] [stdout]   --> src/main.rs:22:18
[INFO] [stdout]    |
[INFO] [stdout] 20 |   fn value(&mut self, args: u32) ->HashMap<u32,u32>{
[INFO] [stdout]    |                                    ---------------- expected `HashMap<u32, u32>` because of return type
[INFO] [stdout] 21 |     match self.value {
[INFO] [stdout] 22 |       Some(v) => v,
[INFO] [stdout]    |                  ^ expected struct `HashMap`, found `u32`
[INFO] [stdout]    |
[INFO] [stdout]    = note: expected struct `HashMap<u32, u32>`
[INFO] [stdout]                 found type `u32`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0308]: mismatched types
[INFO] [stdout]   --> src/main.rs:26:9
[INFO] [stdout]    |
[INFO] [stdout] 20 |   fn value(&mut self, args: u32) ->HashMap<u32,u32>{
[INFO] [stdout]    |                                    ---------------- expected `HashMap<u32, u32>` because of return type
[INFO] [stdout] ...
[INFO] [stdout] 26 |         v
[INFO] [stdout]    |         ^ expected struct `HashMap`, found `u32`
[INFO] [stdout]    |
[INFO] [stdout]    = note: expected struct `HashMap<u32, u32>`
[INFO] [stdout]                 found type `u32`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0277]: `HashMap<u32, u32>` doesn't implement `std::fmt::Display`
[INFO] [stdout]   --> src/main.rs:37:26
[INFO] [stdout]    |
[INFO] [stdout] 37 |   println!("v1:{},v2:{}",v1,v2);
[INFO] [stdout]    |                          ^^ `HashMap<u32, u32>` cannot be formatted with the default formatter
[INFO] [stdout]    |
[INFO] [stdout]    = help: the trait `std::fmt::Display` is not implemented for `HashMap<u32, u32>`
[INFO] [stdout]    = note: in format strings you may be able to use `{:?}` (or {:#?} for pretty-print) instead
[INFO] [stdout]    = note: this error originates in the macro `$crate::format_args_nl` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0277]: `HashMap<u32, u32>` doesn't implement `std::fmt::Display`
[INFO] [stdout]   --> src/main.rs:37:29
[INFO] [stdout]    |
[INFO] [stdout] 37 |   println!("v1:{},v2:{}",v1,v2);
[INFO] [stdout]    |                             ^^ `HashMap<u32, u32>` cannot be formatted with the default formatter
[INFO] [stdout]    |
[INFO] [stdout]    = help: the trait `std::fmt::Display` is not implemented for `HashMap<u32, u32>`
[INFO] [stdout]    = note: in format strings you may be able to use `{:?}` (or {:#?} for pretty-print) instead
[INFO] [stdout]    = note: this error originates in the macro `$crate::format_args_nl` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 4 previous errors
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] Some errors have detailed explanations: E0277, E0308.
[INFO] [stdout] 
[INFO] [stdout] For more information about an error, try `rustc --explain E0277`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `example` due to 5 previous errors
[INFO] running `Command { std: "docker" "inspect" "8004fb60c06ec93bb2a31df1aca37b2c138ffeaa9265a022c73c1a250cc7ba88", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "8004fb60c06ec93bb2a31df1aca37b2c138ffeaa9265a022c73c1a250cc7ba88", kill_on_drop: false }`
[INFO] [stdout] 8004fb60c06ec93bb2a31df1aca37b2c138ffeaa9265a022c73c1a250cc7ba88