[INFO] cloning repository https://github.com/Xiang-cd/rust-by-example
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/Xiang-cd/rust-by-example" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FXiang-cd%2Frust-by-example", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FXiang-cd%2Frust-by-example'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 4b7b8a298ac578aeb9471c4ae5681415a21a5ffa
[INFO] checking Xiang-cd/rust-by-example against try#50d7e48beb74b48bd17c3749bfb73843c9ae0166 for pr-151102
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FXiang-cd%2Frust-by-example" "/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/Xiang-cd/rust-by-example
[INFO] finished tweaking git repo https://github.com/Xiang-cd/rust-by-example
[INFO] tweaked toml for git repo https://github.com/Xiang-cd/rust-by-example written to /workspace/builds/worker-0-tc2/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/Xiang-cd/rust-by-example on toolchain 50d7e48beb74b48bd17c3749bfb73843c9ae0166
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+50d7e48beb74b48bd17c3749bfb73843c9ae0166" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/Xiang-cd/rust-by-example 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" "+50d7e48beb74b48bd17c3749bfb73843c9ae0166" "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@sha256:98afbf2d16093dec2546ff8915fddc74e65664aa03fc460b3712b1c2c54a33e4" "/opt/rustwide/cargo-home/bin/cargo" "+50d7e48beb74b48bd17c3749bfb73843c9ae0166" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 8e950d96d7cbdb535b29d1b03f74724de76c4230fd72398ddc74b4dbccd473da
[INFO] running `Command { std: "docker" "start" "-a" "8e950d96d7cbdb535b29d1b03f74724de76c4230fd72398ddc74b4dbccd473da", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "8e950d96d7cbdb535b29d1b03f74724de76c4230fd72398ddc74b4dbccd473da", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "8e950d96d7cbdb535b29d1b03f74724de76c4230fd72398ddc74b4dbccd473da", kill_on_drop: false }`
[INFO] [stdout] 8e950d96d7cbdb535b29d1b03f74724de76c4230fd72398ddc74b4dbccd473da
[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@sha256:98afbf2d16093dec2546ff8915fddc74e65664aa03fc460b3712b1c2c54a33e4" "/opt/rustwide/cargo-home/bin/cargo" "+50d7e48beb74b48bd17c3749bfb73843c9ae0166" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 6bd33aecb719ddcfbaec1fb0c0b718d2080b929d46c96ec6693d219e73d6df1e
[INFO] running `Command { std: "docker" "start" "-a" "6bd33aecb719ddcfbaec1fb0c0b718d2080b929d46c96ec6693d219e73d6df1e", kill_on_drop: false }`
[INFO] [stderr]     Checking rust-by-example v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unnecessary trailing semicolon
[INFO] [stdout]    --> src/hello.rs:111:6
[INFO] [stdout]     |
[INFO] [stdout] 111 |     };
[INFO] [stdout]     |      ^ help: remove this semicolon
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(redundant_semicolons)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary trailing semicolon
[INFO] [stdout]    --> src/hello.rs:111:6
[INFO] [stdout]     |
[INFO] [stdout] 111 |     };
[INFO] [stdout]     |      ^ help: remove this semicolon
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(redundant_semicolons)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `0` is never read
[INFO] [stdout]    --> src/hello.rs:159:22
[INFO] [stdout]     |
[INFO] [stdout] 159 |     struct Structure(i32);
[INFO] [stdout]     |            --------- ^^^
[INFO] [stdout]     |            |
[INFO] [stdout]     |            field in this struct
[INFO] [stdout]     |
[INFO] [stdout]     = help: consider removing this field
[INFO] [stdout]     = note: `Structure` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout]     = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `0` is never read
[INFO] [stdout]    --> src/hello.rs:162:17
[INFO] [stdout]     |
[INFO] [stdout] 162 |     struct Deep(Structure);
[INFO] [stdout]     |            ---- ^^^^^^^^^
[INFO] [stdout]     |            |
[INFO] [stdout]     |            field in this struct
[INFO] [stdout]     |
[INFO] [stdout]     = help: consider removing this field
[INFO] [stdout]     = note: `Deep` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: fields `name` and `age` are never read
[INFO] [stdout]    --> src/hello.rs:171:9
[INFO] [stdout]     |
[INFO] [stdout] 170 |     struct Person<'a> {
[INFO] [stdout]     |            ------ fields in this struct
[INFO] [stdout] 171 |         name: &'a str,
[INFO] [stdout]     |         ^^^^
[INFO] [stdout] 172 |         age: u8,
[INFO] [stdout]     |         ^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `Person` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `0` is never read
[INFO] [stdout]    --> src/hello.rs:159:22
[INFO] [stdout]     |
[INFO] [stdout] 159 |     struct Structure(i32);
[INFO] [stdout]     |            --------- ^^^
[INFO] [stdout]     |            |
[INFO] [stdout]     |            field in this struct
[INFO] [stdout]     |
[INFO] [stdout]     = help: consider removing this field
[INFO] [stdout]     = note: `Structure` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout]     = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `0` is never read
[INFO] [stdout]    --> src/hello.rs:162:17
[INFO] [stdout]     |
[INFO] [stdout] 162 |     struct Deep(Structure);
[INFO] [stdout]     |            ---- ^^^^^^^^^
[INFO] [stdout]     |            |
[INFO] [stdout]     |            field in this struct
[INFO] [stdout]     |
[INFO] [stdout]     = help: consider removing this field
[INFO] [stdout]     = note: `Deep` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: fields `name` and `age` are never read
[INFO] [stdout]    --> src/hello.rs:171:9
[INFO] [stdout]     |
[INFO] [stdout] 170 |     struct Person<'a> {
[INFO] [stdout]     |            ------ fields in this struct
[INFO] [stdout] 171 |         name: &'a str,
[INFO] [stdout]     |         ^^^^
[INFO] [stdout] 172 |         age: u8,
[INFO] [stdout]     |         ^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `Person` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 0.28s
[INFO] running `Command { std: "docker" "inspect" "6bd33aecb719ddcfbaec1fb0c0b718d2080b929d46c96ec6693d219e73d6df1e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "6bd33aecb719ddcfbaec1fb0c0b718d2080b929d46c96ec6693d219e73d6df1e", kill_on_drop: false }`
[INFO] [stdout] 6bd33aecb719ddcfbaec1fb0c0b718d2080b929d46c96ec6693d219e73d6df1e
