[INFO] cloning repository https://github.com/tamamu/gmml
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/tamamu/gmml" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Ftamamu%2Fgmml", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Ftamamu%2Fgmml'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 62efdd50353d41e015058187aec6d0422a14ee2b
[INFO] checking tamamu/gmml against master#1f12b9b0fdbe735968ac002792a720f0ba4faca6 for crater-rollup-uwu
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Ftamamu%2Fgmml" "/workspace/builds/worker-2-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-2-tc1/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/tamamu/gmml on toolchain 1f12b9b0fdbe735968ac002792a720f0ba4faca6
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1f12b9b0fdbe735968ac002792a720f0ba4faca6" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/tamamu/gmml
[INFO] finished tweaking git repo https://github.com/tamamu/gmml
[INFO] tweaked toml for git repo https://github.com/tamamu/gmml written to /workspace/builds/worker-2-tc1/source/Cargo.toml
[INFO] crate git repo https://github.com/tamamu/gmml 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" "+1f12b9b0fdbe735968ac002792a720f0ba4faca6" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc1/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@sha256:923055f121b5182466d55868a8b05e67af8ba4a3a3f6bad814e953ca3cd3ac2a" "/opt/rustwide/cargo-home/bin/cargo" "+1f12b9b0fdbe735968ac002792a720f0ba4faca6" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] ec2c66c2fca7c3e25d7ed290a219243d31e5ddeb9a698bd7cfaeb512db42d6d9
[INFO] running `Command { std: "docker" "start" "-a" "ec2c66c2fca7c3e25d7ed290a219243d31e5ddeb9a698bd7cfaeb512db42d6d9", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "ec2c66c2fca7c3e25d7ed290a219243d31e5ddeb9a698bd7cfaeb512db42d6d9", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "ec2c66c2fca7c3e25d7ed290a219243d31e5ddeb9a698bd7cfaeb512db42d6d9", kill_on_drop: false }`
[INFO] [stdout] ec2c66c2fca7c3e25d7ed290a219243d31e5ddeb9a698bd7cfaeb512db42d6d9
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc1/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@sha256:923055f121b5182466d55868a8b05e67af8ba4a3a3f6bad814e953ca3cd3ac2a" "/opt/rustwide/cargo-home/bin/cargo" "+1f12b9b0fdbe735968ac002792a720f0ba4faca6" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 87f8e5135cfb37c53bd001cc04b83a575f1b3cf5bd4fe5f6c13e1a46ebba52b2
[INFO] running `Command { std: "docker" "start" "-a" "87f8e5135cfb37c53bd001cc04b83a575f1b3cf5bd4fe5f6c13e1a46ebba52b2", kill_on_drop: false }`
[INFO] [stderr]     Checking gmml v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: fields `filename` and `sym` are never read
[INFO] [stdout]   --> src/parse.rs:38:5
[INFO] [stdout]    |
[INFO] [stdout] 37 | pub struct Scanner {
[INFO] [stdout]    |            ------- fields in this struct
[INFO] [stdout] 38 |     filename: String,
[INFO] [stdout]    |     ^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 41 |     sym: Vec<String>,
[INFO] [stdout]    |     ^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `Scanner` has a derived impl for the trait `Clone`, but this is intentionally ignored during dead code analysis
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: fields `filename` and `sym` are never read
[INFO] [stdout]   --> src/parse.rs:38:5
[INFO] [stdout]    |
[INFO] [stdout] 37 | pub struct Scanner {
[INFO] [stdout]    |            ------- fields in this struct
[INFO] [stdout] 38 |     filename: String,
[INFO] [stdout]    |     ^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 41 |     sym: Vec<String>,
[INFO] [stdout]    |     ^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `Scanner` has a derived impl for the trait `Clone`, but this is intentionally ignored during dead code analysis
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: panic message contains a brace
[INFO] [stdout]    --> src/parse.rs:450:48
[INFO] [stdout]     |
[INFO] [stdout] 450 |             _ => panic!("parsing error: expect {, string, number, or identifier"),
[INFO] [stdout]     |                                                ^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this message is not used as a format string, but will be in Rust 2021
[INFO] [stdout]     = note: `#[warn(non_fmt_panics)]` on by default
[INFO] [stdout] help: add a "{}" format string to use the message literally
[INFO] [stdout]     |
[INFO] [stdout] 450 |             _ => panic!("{}", "parsing error: expect {, string, number, or identifier"),
[INFO] [stdout]     |                         +++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: panic message contains a brace
[INFO] [stdout]    --> src/parse.rs:450:48
[INFO] [stdout]     |
[INFO] [stdout] 450 |             _ => panic!("parsing error: expect {, string, number, or identifier"),
[INFO] [stdout]     |                                                ^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this message is not used as a format string, but will be in Rust 2021
[INFO] [stdout]     = note: `#[warn(non_fmt_panics)]` on by default
[INFO] [stdout] help: add a "{}" format string to use the message literally
[INFO] [stdout]     |
[INFO] [stdout] 450 |             _ => panic!("{}", "parsing error: expect {, string, number, or identifier"),
[INFO] [stdout]     |                         +++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: panic message contains a brace
[INFO] [stdout]    --> src/parse.rs:514:48
[INFO] [stdout]     |
[INFO] [stdout] 514 |             _ => panic!("parsing error: expect {"),
[INFO] [stdout]     |                                                ^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this message is not used as a format string, but will be in Rust 2021
[INFO] [stdout] help: add a "{}" format string to use the message literally
[INFO] [stdout]     |
[INFO] [stdout] 514 |             _ => panic!("{}", "parsing error: expect {"),
[INFO] [stdout]     |                         +++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: panic message contains a brace
[INFO] [stdout]    --> src/parse.rs:514:48
[INFO] [stdout]     |
[INFO] [stdout] 514 |             _ => panic!("parsing error: expect {"),
[INFO] [stdout]     |                                                ^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this message is not used as a format string, but will be in Rust 2021
[INFO] [stdout] help: add a "{}" format string to use the message literally
[INFO] [stdout]     |
[INFO] [stdout] 514 |             _ => panic!("{}", "parsing error: expect {"),
[INFO] [stdout]     |                         +++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: panic message contains a brace
[INFO] [stdout]    --> src/parse.rs:544:48
[INFO] [stdout]     |
[INFO] [stdout] 544 |             _ => panic!("parsing error: expect }"),
[INFO] [stdout]     |                                                ^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this message is not used as a format string, but will be in Rust 2021
[INFO] [stdout] help: add a "{}" format string to use the message literally
[INFO] [stdout]     |
[INFO] [stdout] 544 |             _ => panic!("{}", "parsing error: expect }"),
[INFO] [stdout]     |                         +++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: panic message contains a brace
[INFO] [stdout]    --> src/parse.rs:544:48
[INFO] [stdout]     |
[INFO] [stdout] 544 |             _ => panic!("parsing error: expect }"),
[INFO] [stdout]     |                                                ^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this message is not used as a format string, but will be in Rust 2021
[INFO] [stdout] help: add a "{}" format string to use the message literally
[INFO] [stdout]     |
[INFO] [stdout] 544 |             _ => panic!("{}", "parsing error: expect }"),
[INFO] [stdout]     |                         +++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 4 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 4 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::fs`
[INFO] [stdout]  --> src/bin/gmml.rs:3:5
[INFO] [stdout]   |
[INFO] [stdout] 3 | use std::fs;
[INFO] [stdout]   |     ^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::fs`
[INFO] [stdout]  --> src/bin/gmml.rs:3:5
[INFO] [stdout]   |
[INFO] [stdout] 3 | use std::fs;
[INFO] [stdout]   |     ^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 0.13s
[INFO] running `Command { std: "docker" "inspect" "87f8e5135cfb37c53bd001cc04b83a575f1b3cf5bd4fe5f6c13e1a46ebba52b2", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "87f8e5135cfb37c53bd001cc04b83a575f1b3cf5bd4fe5f6c13e1a46ebba52b2", kill_on_drop: false }`
[INFO] [stdout] 87f8e5135cfb37c53bd001cc04b83a575f1b3cf5bd4fe5f6c13e1a46ebba52b2