[INFO] cloning repository https://github.com/pope/rust_tutorial
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/pope/rust_tutorial" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fpope%2Frust_tutorial", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fpope%2Frust_tutorial'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 082cb2bd9a7fa17b449d9b534729a0518cb40666
[INFO] checking pope/rust_tutorial against master#82310651b93a594a3fd69015e1562186a080d94c for pr-145770
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fpope%2Frust_tutorial" "/workspace/builds/worker-0-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-0-tc1/source'...
[INFO] [stderr] done.
[INFO] started tweaking git repo https://github.com/pope/rust_tutorial
[INFO] finished tweaking git repo https://github.com/pope/rust_tutorial
[INFO] tweaked toml for git repo https://github.com/pope/rust_tutorial written to /workspace/builds/worker-0-tc1/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/pope/rust_tutorial on toolchain 82310651b93a594a3fd69015e1562186a080d94c
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+82310651b93a594a3fd69015e1562186a080d94c" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/pope/rust_tutorial 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" "+82310651b93a594a3fd69015e1562186a080d94c" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr] warning: virtual workspace defaulting to `resolver = "1"` despite one or more workspace members being on edition 2021 which implies `resolver = "2"`
[INFO] [stderr] note: to keep the current resolver, specify `workspace.resolver = "1"` in the workspace root's manifest
[INFO] [stderr] note: to use the edition 2021 resolver, specify `workspace.resolver = "2"` in the workspace root's manifest
[INFO] [stderr] note: for more details see https://doc.rust-lang.org/cargo/reference/resolver.html#resolver-versions
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-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@sha256:7ad1b28ee6f5f7f699f6cf7015098d6ccdd96d6f2d78dd06228f5b4c9faf309c" "/opt/rustwide/cargo-home/bin/cargo" "+82310651b93a594a3fd69015e1562186a080d94c" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 59b06c505e6c408eaebc58fec645dec1ba6c6a284058f8b9e36dcb3b8d94805c
[INFO] running `Command { std: "docker" "start" "-a" "59b06c505e6c408eaebc58fec645dec1ba6c6a284058f8b9e36dcb3b8d94805c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "59b06c505e6c408eaebc58fec645dec1ba6c6a284058f8b9e36dcb3b8d94805c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "59b06c505e6c408eaebc58fec645dec1ba6c6a284058f8b9e36dcb3b8d94805c", kill_on_drop: false }`
[INFO] [stdout] 59b06c505e6c408eaebc58fec645dec1ba6c6a284058f8b9e36dcb3b8d94805c
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-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@sha256:7ad1b28ee6f5f7f699f6cf7015098d6ccdd96d6f2d78dd06228f5b4c9faf309c" "/opt/rustwide/cargo-home/bin/cargo" "+82310651b93a594a3fd69015e1562186a080d94c" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] e8783573bca1cbe249f43ab0344de916044190d8d8b4a916995925d364183522
[INFO] running `Command { std: "docker" "start" "-a" "e8783573bca1cbe249f43ab0344de916044190d8d8b4a916995925d364183522", kill_on_drop: false }`
[INFO] [stderr] warning: virtual workspace defaulting to `resolver = "1"` despite one or more workspace members being on edition 2021 which implies `resolver = "2"`
[INFO] [stderr] note: to keep the current resolver, specify `workspace.resolver = "1"` in the workspace root's manifest
[INFO] [stderr] note: to use the edition 2021 resolver, specify `workspace.resolver = "2"` in the workspace root's manifest
[INFO] [stderr] note: for more details see https://doc.rust-lang.org/cargo/reference/resolver.html#resolver-versions
[INFO] [stderr]    Compiling libc v0.2.139
[INFO] [stderr]     Checking cfg-if v1.0.0
[INFO] [stderr]     Checking ppv-lite86 v0.2.17
[INFO] [stderr]     Checking binary-heap v0.1.0 (/opt/rustwide/workdir/binary-heap)
[INFO] [stderr]     Checking d-linked-list v0.1.0 (/opt/rustwide/workdir/d-linked-list)
[INFO] [stderr]     Checking minigrep v0.1.0 (/opt/rustwide/workdir/minigrep)
[INFO] [stderr]     Checking adder v0.1.0 (/opt/rustwide/workdir/adder)
[INFO] [stderr]     Checking shirt-company v0.1.0 (/opt/rustwide/workdir/shirt-company)
[INFO] [stderr]     Checking limit-tracker v0.1.0 (/opt/rustwide/workdir/limit-tracker)
[INFO] [stderr]     Checking hello_cargo v0.1.0 (/opt/rustwide/workdir/hello_cargo)
[INFO] [stderr]     Checking threads v0.1.0 (/opt/rustwide/workdir/threads)
[INFO] [stderr]     Checking leaves-from-the-vine v0.1.0 (/opt/rustwide/workdir/leaves-from-the-vine)
[INFO] [stderr]     Checking variables v0.1.0 (/opt/rustwide/workdir/variables)
[INFO] [stderr]     Checking const-list v0.1.0 (/opt/rustwide/workdir/const-list)
[INFO] [stderr]     Checking restaurant v0.1.0 (/opt/rustwide/workdir/restaurant)
[INFO] [stdout] warning: fields `0` and `1` are never read
[INFO] [stdout]  --> const-list/src/main.rs:7:7
[INFO] [stdout]   |
[INFO] [stdout] 7 |     Cons(i32, Box<List>),
[INFO] [stdout]   |     ---- ^^^  ^^^^^^^^^
[INFO] [stdout]   |     |
[INFO] [stdout]   |     fields in this variant
[INFO] [stdout]   |
[INFO] [stdout]   = note: `List` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] help: consider changing the fields to be of unit type to suppress this warning while preserving the field numbering, or remove the fields
[INFO] [stdout]   |
[INFO] [stdout] 7 -     Cons(i32, Box<List>),
[INFO] [stdout] 7 +     Cons((), ()),
[INFO] [stdout]   |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: fields `0` and `1` are never read
[INFO] [stdout]   --> const-list/src/main.rs:13:9
[INFO] [stdout]    |
[INFO] [stdout] 13 |     RcCons(i32, Rc<RcList>),
[INFO] [stdout]    |     ------ ^^^  ^^^^^^^^^^
[INFO] [stdout]    |     |
[INFO] [stdout]    |     fields in this variant
[INFO] [stdout]    |
[INFO] [stdout]    = note: `RcList` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout] help: consider changing the fields to be of unit type to suppress this warning while preserving the field numbering, or remove the fields
[INFO] [stdout]    |
[INFO] [stdout] 13 -     RcCons(i32, Rc<RcList>),
[INFO] [stdout] 13 +     RcCons((), ()),
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: fields `0` and `1` are never read
[INFO] [stdout]   --> const-list/src/main.rs:19:12
[INFO] [stdout]    |
[INFO] [stdout] 19 |     RcRefCons(Rc<RefCell<i32>>, Rc<RcRefList>),
[INFO] [stdout]    |     --------- ^^^^^^^^^^^^^^^^  ^^^^^^^^^^^^^
[INFO] [stdout]    |     |
[INFO] [stdout]    |     fields in this variant
[INFO] [stdout]    |
[INFO] [stdout]    = note: `RcRefList` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout] help: consider changing the fields to be of unit type to suppress this warning while preserving the field numbering, or remove the fields
[INFO] [stdout]    |
[INFO] [stdout] 19 -     RcRefCons(Rc<RefCell<i32>>, Rc<RcRefList>),
[INFO] [stdout] 19 +     RcRefCons((), ()),
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Checking backyard v0.1.0 (/opt/rustwide/workdir/backyard)
[INFO] [stderr]     Checking interior-mutability v0.1.0 (/opt/rustwide/workdir/interior-mutability)
[INFO] [stdout] warning: fields `0` and `1` are never read
[INFO] [stdout]  --> const-list/src/main.rs:7:7
[INFO] [stdout]   |
[INFO] [stdout] 7 |     Cons(i32, Box<List>),
[INFO] [stdout]   |     ---- ^^^  ^^^^^^^^^
[INFO] [stdout]   |     |
[INFO] [stdout]   |     fields in this variant
[INFO] [stdout]   |
[INFO] [stdout]   = note: `List` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] help: consider changing the fields to be of unit type to suppress this warning while preserving the field numbering, or remove the fields
[INFO] [stdout]   |
[INFO] [stdout] 7 -     Cons(i32, Box<List>),
[INFO] [stdout] 7 +     Cons((), ()),
[INFO] [stdout]   |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: fields `0` and `1` are never read
[INFO] [stdout]   --> const-list/src/main.rs:13:9
[INFO] [stdout]    |
[INFO] [stdout] 13 |     RcCons(i32, Rc<RcList>),
[INFO] [stdout]    |     ------ ^^^  ^^^^^^^^^^
[INFO] [stdout]    |     |
[INFO] [stdout]    |     fields in this variant
[INFO] [stdout]    |
[INFO] [stdout]    = note: `RcList` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout] help: consider changing the fields to be of unit type to suppress this warning while preserving the field numbering, or remove the fields
[INFO] [stdout]    |
[INFO] [stdout] 13 -     RcCons(i32, Rc<RcList>),
[INFO] [stdout] 13 +     RcCons((), ()),
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: fields `0` and `1` are never read
[INFO] [stdout]   --> const-list/src/main.rs:19:12
[INFO] [stdout]    |
[INFO] [stdout] 19 |     RcRefCons(Rc<RefCell<i32>>, Rc<RcRefList>),
[INFO] [stdout]    |     --------- ^^^^^^^^^^^^^^^^  ^^^^^^^^^^^^^
[INFO] [stdout]    |     |
[INFO] [stdout]    |     fields in this variant
[INFO] [stdout]    |
[INFO] [stdout]    = note: `RcRefList` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout] help: consider changing the fields to be of unit type to suppress this warning while preserving the field numbering, or remove the fields
[INFO] [stdout]    |
[INFO] [stdout] 19 -     RcRefCons(Rc<RefCell<i32>>, Rc<RcRefList>),
[INFO] [stdout] 19 +     RcRefCons((), ()),
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Checking chapter10 v0.1.0 (/opt/rustwide/workdir/chapter10)
[INFO] [stderr]     Checking rectangles v0.1.0 (/opt/rustwide/workdir/rectangles)
[INFO] [stderr]     Checking k-nearest v0.1.0 (/opt/rustwide/workdir/k-nearest)
[INFO] [stderr]     Checking lru-map v0.1.0 (/opt/rustwide/workdir/lru-map)
[INFO] [stderr]     Checking getrandom v0.2.8
[INFO] [stderr]     Checking rand_core v0.6.4
[INFO] [stderr]     Checking rand_chacha v0.3.1
[INFO] [stderr]     Checking rand v0.8.5
[INFO] [stderr]     Checking guessing_game v0.1.0 (/opt/rustwide/workdir/guessing_game)
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 3.65s
[INFO] running `Command { std: "docker" "inspect" "e8783573bca1cbe249f43ab0344de916044190d8d8b4a916995925d364183522", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "e8783573bca1cbe249f43ab0344de916044190d8d8b4a916995925d364183522", kill_on_drop: false }`
[INFO] [stdout] e8783573bca1cbe249f43ab0344de916044190d8d8b4a916995925d364183522
