[INFO] cloning repository https://github.com/MuuJian/rust
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/MuuJian/rust" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FMuuJian%2Frust", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FMuuJian%2Frust'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 198f612ee558653dadc7781664bcbf7bcc5ec693
[INFO] checking MuuJian/rust against try#db4e1d23234d93b5e96ecc768b35d9090c32cddf for pr-149901
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FMuuJian%2Frust" "/workspace/builds/worker-0-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-0-tc2/source'...
[INFO] [stderr] done.
[INFO] started tweaking git repo https://github.com/MuuJian/rust
[INFO] finished tweaking git repo https://github.com/MuuJian/rust
[INFO] tweaked toml for git repo https://github.com/MuuJian/rust written to /workspace/builds/worker-0-tc2/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/MuuJian/rust on toolchain db4e1d23234d93b5e96ecc768b35d9090c32cddf
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+db4e1d23234d93b5e96ecc768b35d9090c32cddf" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/MuuJian/rust 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" "+db4e1d23234d93b5e96ecc768b35d9090c32cddf" "fetch" "--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] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-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@sha256:845e597a41426bbf2703be69acdb67d10b6de511142d05cba7bbe119c898b2c7" "/opt/rustwide/cargo-home/bin/cargo" "+db4e1d23234d93b5e96ecc768b35d9090c32cddf" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 38616d0d87e6271c1cbcf99057f29dbe894deaa9d2d55dd406f6eb237e9ad04b
[INFO] running `Command { std: "docker" "start" "-a" "38616d0d87e6271c1cbcf99057f29dbe894deaa9d2d55dd406f6eb237e9ad04b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "38616d0d87e6271c1cbcf99057f29dbe894deaa9d2d55dd406f6eb237e9ad04b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "38616d0d87e6271c1cbcf99057f29dbe894deaa9d2d55dd406f6eb237e9ad04b", kill_on_drop: false }`
[INFO] [stdout] 38616d0d87e6271c1cbcf99057f29dbe894deaa9d2d55dd406f6eb237e9ad04b
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-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@sha256:845e597a41426bbf2703be69acdb67d10b6de511142d05cba7bbe119c898b2c7" "/opt/rustwide/cargo-home/bin/cargo" "+db4e1d23234d93b5e96ecc768b35d9090c32cddf" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 81ade421f718ef84baa07a07a18ab02e5e1945ca06619618d84e0a55ba45ff42
[INFO] running `Command { std: "docker" "start" "-a" "81ade421f718ef84baa07a07a18ab02e5e1945ca06619618d84e0a55ba45ff42", kill_on_drop: false }`
[INFO] [stderr]     Checking guessing_name v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] error: expected `;`, found `println`
[INFO] [stdout]   --> src/main.rs:10:19
[INFO] [stdout]    |
[INFO] [stdout] 10 |     let i = (1..4)
[INFO] [stdout]    |                   ^ help: add `;` here
[INFO] [stdout] 11 |     println!("{}", i[2]);
[INFO] [stdout]    |     ------- unexpected token
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around assigned value
[INFO] [stdout]   --> src/main.rs:10:13
[INFO] [stdout]    |
[INFO] [stdout] 10 |     let i = (1..4)
[INFO] [stdout]    |             ^    ^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_parens)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] help: remove these parentheses
[INFO] [stdout]    |
[INFO] [stdout] 10 -     let i = (1..4)
[INFO] [stdout] 10 +     let i = 1..4 
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0608]: cannot index into a value of type `std::ops::Range<{integer}>`
[INFO] [stdout]   --> src/main.rs:11:21
[INFO] [stdout]    |
[INFO] [stdout] 11 |     println!("{}", i[2]);
[INFO] [stdout]    |                     ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: expected `;`, found `println`
[INFO] [stdout]   --> src/main.rs:10:19
[INFO] [stdout]    |
[INFO] [stdout] 10 |     let i = (1..4)
[INFO] [stdout]    |                   ^ help: add `;` here
[INFO] [stdout] 11 |     println!("{}", i[2]);
[INFO] [stdout]    |     ------- unexpected token
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `b` is never read
[INFO] [stdout]   --> src/main.rs:41:5
[INFO] [stdout]    |
[INFO] [stdout] 41 |     b[0] = 10;
[INFO] [stdout]    |     ^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = help: maybe it is overwritten before being read?
[INFO] [stdout]    = note: `#[warn(unused_assignments)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0608`.
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around assigned value
[INFO] [stdout]   --> src/main.rs:10:13
[INFO] [stdout]    |
[INFO] [stdout] 10 |     let i = (1..4)
[INFO] [stdout]    |             ^    ^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_parens)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] help: remove these parentheses
[INFO] [stdout]    |
[INFO] [stdout] 10 -     let i = (1..4)
[INFO] [stdout] 10 +     let i = 1..4 
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `guessing_name` (bin "guessing_name") due to 2 previous errors; 2 warnings emitted
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stdout] error[E0608]: cannot index into a value of type `std::ops::Range<{integer}>`
[INFO] [stdout]   --> src/main.rs:11:21
[INFO] [stdout]    |
[INFO] [stdout] 11 |     println!("{}", i[2]);
[INFO] [stdout]    |                     ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `b` is never read
[INFO] [stdout]   --> src/main.rs:41:5
[INFO] [stdout]    |
[INFO] [stdout] 41 |     b[0] = 10;
[INFO] [stdout]    |     ^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = help: maybe it is overwritten before being read?
[INFO] [stdout]    = note: `#[warn(unused_assignments)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0608`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `guessing_name` (bin "guessing_name" test) due to 2 previous errors; 2 warnings emitted
[INFO] running `Command { std: "docker" "inspect" "81ade421f718ef84baa07a07a18ab02e5e1945ca06619618d84e0a55ba45ff42", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "81ade421f718ef84baa07a07a18ab02e5e1945ca06619618d84e0a55ba45ff42", kill_on_drop: false }`
[INFO] [stdout] 81ade421f718ef84baa07a07a18ab02e5e1945ca06619618d84e0a55ba45ff42