[INFO] cloning repository https://github.com/Ramoreik/dolon
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/Ramoreik/dolon" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FRamoreik%2Fdolon", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FRamoreik%2Fdolon'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] e21d2829e2a3a53e093ae84900265a5608c0f2fb
[INFO] checking Ramoreik/dolon against try#9cfe725f0995b018340c519db1b2f3cf8a7e0631 for pr-81174
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FRamoreik%2Fdolon" "/workspace/builds/worker-3/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-3/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/Ramoreik/dolon on toolchain 9cfe725f0995b018340c519db1b2f3cf8a7e0631
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+9cfe725f0995b018340c519db1b2f3cf8a7e0631" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/Ramoreik/dolon
[INFO] finished tweaking git repo https://github.com/Ramoreik/dolon
[INFO] tweaked toml for git repo https://github.com/Ramoreik/dolon written to /workspace/builds/worker-3/source/Cargo.toml
[INFO] crate git repo https://github.com/Ramoreik/dolon already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+9cfe725f0995b018340c519db1b2f3cf8a7e0631" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded read_input v0.8.4
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/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@sha256:21f1ed92105a0ef9b0d27ad8bdeb7f36f9f01ac17fffe3a3f3dc5241fc25d8f4" "/opt/rustwide/cargo-home/bin/cargo" "+9cfe725f0995b018340c519db1b2f3cf8a7e0631" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] b3e6c5d04bb12b28d13dbfe687389ab6890d66c8b313e0e38cda57c2f909ae16
[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" "b3e6c5d04bb12b28d13dbfe687389ab6890d66c8b313e0e38cda57c2f909ae16", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "b3e6c5d04bb12b28d13dbfe687389ab6890d66c8b313e0e38cda57c2f909ae16", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "b3e6c5d04bb12b28d13dbfe687389ab6890d66c8b313e0e38cda57c2f909ae16", kill_on_drop: false }`
[INFO] [stdout] b3e6c5d04bb12b28d13dbfe687389ab6890d66c8b313e0e38cda57c2f909ae16
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/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@sha256:21f1ed92105a0ef9b0d27ad8bdeb7f36f9f01ac17fffe3a3f3dc5241fc25d8f4" "/opt/rustwide/cargo-home/bin/cargo" "+9cfe725f0995b018340c519db1b2f3cf8a7e0631" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 825bedd199d122d629049bce4b40783c8dff3f2f397983a76768ad6241fcdec4
[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" "825bedd199d122d629049bce4b40783c8dff3f2f397983a76768ad6241fcdec4", kill_on_drop: false }`
[INFO] [stderr]     Checking read_input v0.8.4
[INFO] [stderr]     Checking prophet-rs v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused imports: `BufRead`, `BufReader`
[INFO] [stdout]  --> src/shell/mod.rs:4:28
[INFO] [stdout]   |
[INFO] [stdout] 4 | use std::io::{Write, Read, BufReader, BufWriter, BufRead};
[INFO] [stdout]   |                            ^^^^^^^^^             ^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `read_input::prelude::*`
[INFO] [stdout]  --> src/main.rs:3:5
[INFO] [stdout]   |
[INFO] [stdout] 3 | use read_input::prelude::*;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `hndl`
[INFO] [stdout]   --> src/shell/mod.rs:73:13
[INFO] [stdout]    |
[INFO] [stdout] 73 |         let hndl = std::thread::spawn(move || {
[INFO] [stdout]    |             ^^^^ help: if this is intentional, prefix it with an underscore: `_hndl`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `last`
[INFO] [stdout]   --> src/shell/mod.rs:24:5
[INFO] [stdout]    |
[INFO] [stdout] 24 |     last: Option<String>,
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `cmd`
[INFO] [stdout]   --> src/shell/mod.rs:25:5
[INFO] [stdout]    |
[INFO] [stdout] 25 |     cmd: Option<String>,
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `interactive`
[INFO] [stdout]   --> src/shell/mod.rs:26:5
[INFO] [stdout]    |
[INFO] [stdout] 26 |     interactive: Option<Child>,
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `interactive_session`
[INFO] [stdout]   --> src/shell/mod.rs:70:12
[INFO] [stdout]    |
[INFO] [stdout] 70 |     pub fn interactive_session(&self) -> Result<(), Box<dyn Error>> {
[INFO] [stdout]    |            ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `BufRead`, `BufReader`
[INFO] [stdout]  --> src/shell/mod.rs:4:28
[INFO] [stdout]   |
[INFO] [stdout] 4 | use std::io::{Write, Read, BufReader, BufWriter, BufRead};
[INFO] [stdout]   |                            ^^^^^^^^^             ^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `read_input::prelude::*`
[INFO] [stdout]  --> src/main.rs:3:5
[INFO] [stdout]   |
[INFO] [stdout] 3 | use read_input::prelude::*;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `hndl`
[INFO] [stdout]   --> src/shell/mod.rs:73:13
[INFO] [stdout]    |
[INFO] [stdout] 73 |         let hndl = std::thread::spawn(move || {
[INFO] [stdout]    |             ^^^^ help: if this is intentional, prefix it with an underscore: `_hndl`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 7 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `last`
[INFO] [stdout]   --> src/shell/mod.rs:24:5
[INFO] [stdout]    |
[INFO] [stdout] 24 |     last: Option<String>,
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `cmd`
[INFO] [stdout]   --> src/shell/mod.rs:25:5
[INFO] [stdout]    |
[INFO] [stdout] 25 |     cmd: Option<String>,
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `interactive`
[INFO] [stdout]   --> src/shell/mod.rs:26:5
[INFO] [stdout]    |
[INFO] [stdout] 26 |     interactive: Option<Child>,
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `interactive_session`
[INFO] [stdout]   --> src/shell/mod.rs:70:12
[INFO] [stdout]    |
[INFO] [stdout] 70 |     pub fn interactive_session(&self) -> Result<(), Box<dyn Error>> {
[INFO] [stdout]    |            ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 7 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1.28s
[INFO] running `Command { std: "docker" "inspect" "825bedd199d122d629049bce4b40783c8dff3f2f397983a76768ad6241fcdec4", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "825bedd199d122d629049bce4b40783c8dff3f2f397983a76768ad6241fcdec4", kill_on_drop: false }`
[INFO] [stdout] 825bedd199d122d629049bce4b40783c8dff3f2f397983a76768ad6241fcdec4