[INFO] cloning repository https://github.com/Nikon5070/rust-notebook
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/Nikon5070/rust-notebook" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FNikon5070%2Frust-notebook", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FNikon5070%2Frust-notebook'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] c88cd84c3431681de242adf4438ff8d25bc787f9
[INFO] checking Nikon5070/rust-notebook against master#e6e4f7ed1589e03bc2f6c5931c1a72e7947e8682 for beta-170-4
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FNikon5070%2Frust-notebook" "/workspace/builds/worker-6-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-6-tc2/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/Nikon5070/rust-notebook on toolchain e6e4f7ed1589e03bc2f6c5931c1a72e7947e8682
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+e6e4f7ed1589e03bc2f6c5931c1a72e7947e8682" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/Nikon5070/rust-notebook
[INFO] finished tweaking git repo https://github.com/Nikon5070/rust-notebook
[INFO] tweaked toml for git repo https://github.com/Nikon5070/rust-notebook written to /workspace/builds/worker-6-tc2/source/Cargo.toml
[INFO] crate git repo https://github.com/Nikon5070/rust-notebook already has a lockfile, it will not be regenerated
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+e6e4f7ed1589e03bc2f6c5931c1a72e7947e8682" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc2/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@sha256:19e73879b68f455e41552ea35293514db52ea292d993f571636dbffedb77a1ee" "/opt/rustwide/cargo-home/bin/cargo" "+e6e4f7ed1589e03bc2f6c5931c1a72e7947e8682" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] c8a3826cebdf54497e06a0a77b9999cbc9ae47d2dce5015f6cc139c0ad37b1bc
[INFO] running `Command { std: "docker" "start" "-a" "c8a3826cebdf54497e06a0a77b9999cbc9ae47d2dce5015f6cc139c0ad37b1bc", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "c8a3826cebdf54497e06a0a77b9999cbc9ae47d2dce5015f6cc139c0ad37b1bc", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "c8a3826cebdf54497e06a0a77b9999cbc9ae47d2dce5015f6cc139c0ad37b1bc", kill_on_drop: false }`
[INFO] [stdout] c8a3826cebdf54497e06a0a77b9999cbc9ae47d2dce5015f6cc139c0ad37b1bc
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc2/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" "RUSTDOCFLAGS=--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@sha256:19e73879b68f455e41552ea35293514db52ea292d993f571636dbffedb77a1ee" "/opt/rustwide/cargo-home/bin/cargo" "+e6e4f7ed1589e03bc2f6c5931c1a72e7947e8682" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 125f4f3c81542076cf4dae71d83fabce1063a1d168edfceeab629acb219b82fe
[INFO] running `Command { std: "docker" "start" "-a" "125f4f3c81542076cf4dae71d83fabce1063a1d168edfceeab629acb219b82fe", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.29
[INFO] [stderr]    Compiling syn v1.0.76
[INFO] [stderr]    Compiling autocfg v1.0.1
[INFO] [stderr]    Compiling serde_derive v1.0.130
[INFO] [stderr]    Compiling bitflags v1.2.1
[INFO] [stderr]    Compiling libc v0.2.102
[INFO] [stderr]    Compiling serde v1.0.130
[INFO] [stderr]    Compiling ryu v1.0.5
[INFO] [stderr]    Compiling serde_json v1.0.68
[INFO] [stderr]     Checking itoa v0.4.8
[INFO] [stderr]    Compiling memoffset v0.6.4
[INFO] [stderr]    Compiling quote v1.0.9
[INFO] [stderr]     Checking nix v0.22.1
[INFO] [stderr]     Checking ctrlc v3.2.0
[INFO] [stderr]     Checking notebook v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] error[E0573]: expected type, found variant `None`
[INFO] [stdout]   --> src/cli.rs:36:49
[INFO] [stdout]    |
[INFO] [stdout] 36 |         let commands_all: HashMap<&str, Fn() -> None> = HashMap::new();
[INFO] [stdout]    |                                                 ^^^^ not a type
[INFO] [stdout]    |
[INFO] [stdout] help: try using the variant's enum
[INFO] [stdout]    |
[INFO] [stdout] 36 |         let commands_all: HashMap<&str, Fn() -> core::option::Option> = HashMap::new();
[INFO] [stdout]    |                                                 ~~~~~~~~~~~~~~~~~~~~
[INFO] [stdout] 36 |         let commands_all: HashMap<&str, Fn() -> serde::__private> = HashMap::new();
[INFO] [stdout]    |                                                 ~~~~~~~~~~~~~~~~
[INFO] [stdout] 36 |         let commands_all: HashMap<&str, Fn() -> serde::__private::de::Content> = HashMap::new();
[INFO] [stdout]    |                                                 ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
[INFO] [stdout] 36 |         let commands_all: HashMap<&str, Fn() -> std::option::Option> = HashMap::new();
[INFO] [stdout]    |                                                 ~~~~~~~~~~~~~~~~~~~
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0573]: expected type, found variant `None`
[INFO] [stdout]   --> src/cli.rs:36:49
[INFO] [stdout]    |
[INFO] [stdout] 36 |         let commands_all: HashMap<&str, Fn() -> None> = HashMap::new();
[INFO] [stdout]    |                                                 ^^^^ not a type
[INFO] [stdout]    |
[INFO] [stdout] help: try using the variant's enum
[INFO] [stdout]    |
[INFO] [stdout] 36 |         let commands_all: HashMap<&str, Fn() -> core::option::Option> = HashMap::new();
[INFO] [stdout]    |                                                 ~~~~~~~~~~~~~~~~~~~~
[INFO] [stdout] 36 |         let commands_all: HashMap<&str, Fn() -> serde::__private> = HashMap::new();
[INFO] [stdout]    |                                                 ~~~~~~~~~~~~~~~~
[INFO] [stdout] 36 |         let commands_all: HashMap<&str, Fn() -> serde::__private::de::Content> = HashMap::new();
[INFO] [stdout]    |                                                 ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
[INFO] [stdout] 36 |         let commands_all: HashMap<&str, Fn() -> std::option::Option> = HashMap::new();
[INFO] [stdout]    |                                                 ~~~~~~~~~~~~~~~~~~~
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `crate::notebook::Notebook`
[INFO] [stdout]  --> src/main.rs:9:5
[INFO] [stdout]   |
[INFO] [stdout] 9 | use crate::notebook::Notebook;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `Read`
[INFO] [stdout]   --> src/main.rs:14:21
[INFO] [stdout]    |
[INFO] [stdout] 14 | use std::io::{self, Read};
[INFO] [stdout]    |                     ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `crate::notebook::Notebook`
[INFO] [stdout]  --> src/main.rs:9:5
[INFO] [stdout]   |
[INFO] [stdout] 9 | use crate::notebook::Notebook;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `Read`
[INFO] [stdout]   --> src/main.rs:14:21
[INFO] [stdout]    |
[INFO] [stdout] 14 | use std::io::{self, Read};
[INFO] [stdout]    |                     ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/cli.rs:36:41
[INFO] [stdout]    |
[INFO] [stdout] 36 |         let commands_all: HashMap<&str, Fn() -> None> = HashMap::new();
[INFO] [stdout]    |                                         ^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this is accepted in the current edition (Rust 2018) but is a hard error in Rust 2021!
[INFO] [stdout]    = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout]    = note: `#[warn(bare_trait_objects)]` on by default
[INFO] [stdout] help: use `dyn`
[INFO] [stdout]    |
[INFO] [stdout] 36 |         let commands_all: HashMap<&str, dyn Fn() -> None> = HashMap::new();
[INFO] [stdout]    |                                         +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/cli.rs:36:41
[INFO] [stdout]    |
[INFO] [stdout] 36 |         let commands_all: HashMap<&str, Fn() -> None> = HashMap::new();
[INFO] [stdout]    |                                         ^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this is accepted in the current edition (Rust 2018) but is a hard error in Rust 2021!
[INFO] [stdout]    = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout]    = note: `#[warn(bare_trait_objects)]` on by default
[INFO] [stdout] help: use `dyn`
[INFO] [stdout]    |
[INFO] [stdout] 36 |         let commands_all: HashMap<&str, dyn Fn() -> None> = HashMap::new();
[INFO] [stdout]    |                                         +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unreachable statement
[INFO] [stdout]   --> src/main.rs:66:5
[INFO] [stdout]    |
[INFO] [stdout] 57 | /     loop {
[INFO] [stdout] 58 | |         let mut input = String::new();
[INFO] [stdout] 59 | |         match io::stdin().read_line(&mut input) {
[INFO] [stdout] 60 | |             Ok(_) => {
[INFO] [stdout] ...  |
[INFO] [stdout] 64 | |         }
[INFO] [stdout] 65 | |     }
[INFO] [stdout]    | |_____- any code following this expression is unreachable
[INFO] [stdout] 66 |       println!("Got it! Exiting...");
[INFO] [stdout]    |       ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ unreachable statement
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unreachable_code)]` on by default
[INFO] [stdout]    = note: this warning originates in the macro `println` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to previous error; 4 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0573`.
[INFO] [stdout] 
[INFO] [stdout] warning: unreachable statement
[INFO] [stdout]   --> src/main.rs:66:5
[INFO] [stdout]    |
[INFO] [stdout] 57 | /     loop {
[INFO] [stdout] 58 | |         let mut input = String::new();
[INFO] [stdout] 59 | |         match io::stdin().read_line(&mut input) {
[INFO] [stdout] 60 | |             Ok(_) => {
[INFO] [stdout] ...  |
[INFO] [stdout] 64 | |         }
[INFO] [stdout] 65 | |     }
[INFO] [stdout]    | |_____- any code following this expression is unreachable
[INFO] [stdout] 66 |       println!("Got it! Exiting...");
[INFO] [stdout]    |       ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ unreachable statement
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unreachable_code)]` on by default
[INFO] [stdout]    = note: this warning originates in the macro `println` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `notebook` (bin "notebook" test) due to 2 previous errors; 4 warnings emitted
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stdout] error: aborting due to previous error; 4 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0573`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `notebook` (bin "notebook") due to 2 previous errors; 4 warnings emitted
[INFO] running `Command { std: "docker" "inspect" "125f4f3c81542076cf4dae71d83fabce1063a1d168edfceeab629acb219b82fe", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "125f4f3c81542076cf4dae71d83fabce1063a1d168edfceeab629acb219b82fe", kill_on_drop: false }`
[INFO] [stdout] 125f4f3c81542076cf4dae71d83fabce1063a1d168edfceeab629acb219b82fe
