[INFO] cloning repository https://github.com/sigpher/rust_book
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/sigpher/rust_book" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fsigpher%2Frust_book", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fsigpher%2Frust_book'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 9cff653aa41d400fc7d1ec9d976c71a0de290474
[INFO] checking sigpher/rust_book against master#a7fc463dd8fbeca800d4b3efc501069502cffe64 for pr-136988
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fsigpher%2Frust_book" "/workspace/builds/worker-1-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-1-tc1/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/sigpher/rust_book on toolchain a7fc463dd8fbeca800d4b3efc501069502cffe64
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+a7fc463dd8fbeca800d4b3efc501069502cffe64" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/sigpher/rust_book
[INFO] finished tweaking git repo https://github.com/sigpher/rust_book
[INFO] tweaked toml for git repo https://github.com/sigpher/rust_book written to /workspace/builds/worker-1-tc1/source/Cargo.toml
[INFO] crate git repo https://github.com/sigpher/rust_book 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" "+a7fc463dd8fbeca800d4b3efc501069502cffe64" "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-1-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-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@sha256:4b26683ee3c49f365255c425c23003cbf4366de097804722c29c5bbbee3624d2" "/opt/rustwide/cargo-home/bin/cargo" "+a7fc463dd8fbeca800d4b3efc501069502cffe64" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 9d255348673d5eafbdc12fb6d64b52089677638bbeee6e282362d48c3470457d
[INFO] running `Command { std: "docker" "start" "-a" "9d255348673d5eafbdc12fb6d64b52089677638bbeee6e282362d48c3470457d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "9d255348673d5eafbdc12fb6d64b52089677638bbeee6e282362d48c3470457d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "9d255348673d5eafbdc12fb6d64b52089677638bbeee6e282362d48c3470457d", kill_on_drop: false }`
[INFO] [stdout] 9d255348673d5eafbdc12fb6d64b52089677638bbeee6e282362d48c3470457d
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-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@sha256:4b26683ee3c49f365255c425c23003cbf4366de097804722c29c5bbbee3624d2" "/opt/rustwide/cargo-home/bin/cargo" "+a7fc463dd8fbeca800d4b3efc501069502cffe64" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] ed192bd800806cb2dda9e8a9bc2c28edc6b2e33ff7655b0de09b2d01957987d5
[INFO] running `Command { std: "docker" "start" "-a" "ed192bd800806cb2dda9e8a9bc2c28edc6b2e33ff7655b0de09b2d01957987d5", 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 v0.2.140
[INFO] [stderr]     Checking cfg-if v1.0.0
[INFO] [stderr]     Checking ppv-lite86 v0.2.17
[INFO] [stderr]     Checking ch10 v0.1.0 (/opt/rustwide/workdir/ch10)
[INFO] [stderr]     Checking ch07 v0.1.0 (/opt/rustwide/workdir/ch07)
[INFO] [stderr]     Checking ch06 v0.1.0 (/opt/rustwide/workdir/ch06)
[INFO] [stderr]     Checking demo v0.1.0 (/opt/rustwide/workdir/demo)
[INFO] [stderr]     Checking ch12 v0.1.0 (/opt/rustwide/workdir/ch12)
[INFO] [stdout] warning: function `deliver_order` is never used
[INFO] [stdout]   --> ch07/src/lib.rs:12:4
[INFO] [stdout]    |
[INFO] [stdout] 12 | fn deliver_order() {}
[INFO] [stdout]    |    ^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `fix_incorrect_order` is never used
[INFO] [stdout]   --> ch07/src/lib.rs:15:8
[INFO] [stdout]    |
[INFO] [stdout] 15 |     fn fix_incorrect_order() {
[INFO] [stdout]    |        ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `cook_order` is never used
[INFO] [stdout]   --> ch07/src/lib.rs:20:8
[INFO] [stdout]    |
[INFO] [stdout] 20 |     fn cook_order() {}
[INFO] [stdout]    |        ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Checking ch16 v0.1.0 (/opt/rustwide/workdir/ch16)
[INFO] [stderr]     Checking ch05 v0.1.0 (/opt/rustwide/workdir/ch05)
[INFO] [stderr]     Checking ch15 v0.1.0 (/opt/rustwide/workdir/ch15)
[INFO] [stdout] warning: unused variable: `num_spaces`
[INFO] [stdout]   --> ch06/src/main.rs:33:20
[INFO] [stdout]    |
[INFO] [stdout] 33 | pub fn move_player(num_spaces: u8) {}
[INFO] [stdout]    |                    ^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_num_spaces`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `Color` and `Point`
[INFO] [stdout]  --> ch05/src/main.rs:1:12
[INFO] [stdout]   |
[INFO] [stdout] 1 | use ch05::{Color, Point, Rectangle, User};
[INFO] [stdout]   |            ^^^^^  ^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `reference_cycles::list` and `tracker`
[INFO] [stdout]   --> ch15/src/main.rs:11:12
[INFO] [stdout]    |
[INFO] [stdout] 11 | use ch15::{reference_cycles::list, tracker};
[INFO] [stdout]    |            ^^^^^^^^^^^^^^^^^^^^^^  ^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `Color` and `Point`
[INFO] [stdout]  --> ch05/src/main.rs:1:12
[INFO] [stdout]   |
[INFO] [stdout] 1 | use ch05::{Color, Point, Rectangle, User};
[INFO] [stdout]   |            ^^^^^  ^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `num_spaces`
[INFO] [stdout]   --> ch06/src/main.rs:33:20
[INFO] [stdout]    |
[INFO] [stdout] 33 | pub fn move_player(num_spaces: u8) {}
[INFO] [stdout]    |                    ^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_num_spaces`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `reference_cycles::list` and `tracker`
[INFO] [stdout]   --> ch15/src/main.rs:11:12
[INFO] [stdout]    |
[INFO] [stdout] 11 | use ch15::{reference_cycles::list, tracker};
[INFO] [stdout]    |            ^^^^^^^^^^^^^^^^^^^^^^  ^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Checking ch03 v0.1.0 (/opt/rustwide/workdir/ch03)
[INFO] [stderr]     Checking ch04 v0.1.0 (/opt/rustwide/workdir/ch04)
[INFO] [stderr]     Checking ch09 v0.1.0 (/opt/rustwide/workdir/ch09)
[INFO] [stderr]     Checking ch08 v0.1.0 (/opt/rustwide/workdir/ch08)
[INFO] [stdout] warning: unused variable: `f1`
[INFO] [stdout]   --> ch03/src/main.rs:24:9
[INFO] [stdout]    |
[INFO] [stdout] 24 |     let f1 = 2f64;
[INFO] [stdout]    |         ^^ help: if this is intentional, prefix it with an underscore: `_f1`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `f2`
[INFO] [stdout]   --> ch03/src/main.rs:25:9
[INFO] [stdout]    |
[INFO] [stdout] 25 |     let f2 = 3f32;
[INFO] [stdout]    |         ^^ help: if this is intentional, prefix it with an underscore: `_f2`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `tup`
[INFO] [stdout]   --> ch03/src/main.rs:27:9
[INFO] [stdout]    |
[INFO] [stdout] 27 |     let tup = (500, 6.4, true);
[INFO] [stdout]    |         ^^^ help: if this is intentional, prefix it with an underscore: `_tup`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `arr`
[INFO] [stdout]   --> ch03/src/main.rs:29:9
[INFO] [stdout]    |
[INFO] [stdout] 29 |     let arr = [1, 2, 3, 4, 5, 6];
[INFO] [stdout]    |         ^^^ help: if this is intentional, prefix it with an underscore: `_arr`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Checking ch14 v0.1.0 (/opt/rustwide/workdir/ch14)
[INFO] [stdout] warning: function `find_number` is never used
[INFO] [stdout]   --> ch04/src/main.rs:17:4
[INFO] [stdout]    |
[INFO] [stdout] 17 | fn find_number(numbers:&[u8],num:u8)->usize{
[INFO] [stdout]    |    ^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `f1`
[INFO] [stdout]   --> ch03/src/main.rs:24:9
[INFO] [stdout]    |
[INFO] [stdout] 24 |     let f1 = 2f64;
[INFO] [stdout]    |         ^^ help: if this is intentional, prefix it with an underscore: `_f1`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `f2`
[INFO] [stdout]   --> ch03/src/main.rs:25:9
[INFO] [stdout]    |
[INFO] [stdout] 25 |     let f2 = 3f32;
[INFO] [stdout]    |         ^^ help: if this is intentional, prefix it with an underscore: `_f2`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `tup`
[INFO] [stdout]   --> ch03/src/main.rs:27:9
[INFO] [stdout]    |
[INFO] [stdout] 27 |     let tup = (500, 6.4, true);
[INFO] [stdout]    |         ^^^ help: if this is intentional, prefix it with an underscore: `_tup`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `arr`
[INFO] [stdout]   --> ch03/src/main.rs:29:9
[INFO] [stdout]    |
[INFO] [stdout] 29 |     let arr = [1, 2, 3, 4, 5, 6];
[INFO] [stdout]    |         ^^^ help: if this is intentional, prefix it with an underscore: `_arr`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `deliver_order` is never used
[INFO] [stdout]   --> ch07/src/lib.rs:12:4
[INFO] [stdout]    |
[INFO] [stdout] 12 | fn deliver_order() {}
[INFO] [stdout]    |    ^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `fix_incorrect_order` is never used
[INFO] [stdout]   --> ch07/src/lib.rs:15:8
[INFO] [stdout]    |
[INFO] [stdout] 15 |     fn fix_incorrect_order() {
[INFO] [stdout]    |        ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `cook_order` is never used
[INFO] [stdout]   --> ch07/src/lib.rs:20:8
[INFO] [stdout]    |
[INFO] [stdout] 20 |     fn cook_order() {}
[INFO] [stdout]    |        ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Checking ch01 v0.1.0 (/opt/rustwide/workdir/ch01)
[INFO] [stderr]     Checking ch11 v0.1.0 (/opt/rustwide/workdir/ch11)
[INFO] [stdout] warning: function `find_number` is never used
[INFO] [stdout]   --> ch04/src/main.rs:17:4
[INFO] [stdout]    |
[INFO] [stdout] 17 | fn find_number(numbers:&[u8],num:u8)->usize{
[INFO] [stdout]    |    ^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `super::*`
[INFO] [stdout]   --> ch11/src/lib.rs:13:9
[INFO] [stdout]    |
[INFO] [stdout] 13 |     use super::*;
[INFO] [stdout]    |         ^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout] help: if this is a test module, consider adding a `#[cfg(test)]` to the containing module
[INFO] [stdout]   --> ch11/src/lib.rs:12:1
[INFO] [stdout]    |
[INFO] [stdout] 12 | mod tests {
[INFO] [stdout]    | ^^^^^^^^^
[INFO] [stdout]    = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[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] [stdout] error: couldn't create a temp dir: No space left on device (os error 28) at path "/opt/rustwide/target/debug/deps/rmeta7ESUrG"
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `rand` (lib) due to 1 previous error
[INFO] running `Command { std: "docker" "inspect" "ed192bd800806cb2dda9e8a9bc2c28edc6b2e33ff7655b0de09b2d01957987d5", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "ed192bd800806cb2dda9e8a9bc2c28edc6b2e33ff7655b0de09b2d01957987d5", kill_on_drop: false }`
[INFO] [stdout] ed192bd800806cb2dda9e8a9bc2c28edc6b2e33ff7655b0de09b2d01957987d5