[INFO] fetching crate stdworld 0.1.1...
[INFO] checking stdworld-0.1.1 against master#8c32e313cccf7df531e2d49ffb8227bb92304aee for pr-145608-1
[INFO] extracting crate stdworld 0.1.1 into /workspace/builds/worker-0-tc1/source
[INFO] started tweaking crates.io crate stdworld 0.1.1
[INFO] finished tweaking crates.io crate stdworld 0.1.1
[INFO] tweaked toml for crates.io crate stdworld 0.1.1 written to /workspace/builds/worker-0-tc1/source/Cargo.toml
[INFO] validating manifest of crates.io crate stdworld 0.1.1 on toolchain 8c32e313cccf7df531e2d49ffb8227bb92304aee
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+8c32e313cccf7df531e2d49ffb8227bb92304aee" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+8c32e313cccf7df531e2d49ffb8227bb92304aee" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+8c32e313cccf7df531e2d49ffb8227bb92304aee" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[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" "+8c32e313cccf7df531e2d49ffb8227bb92304aee" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 2ff291efbf76a32d3a5a897fd335be55e428869037c6a6fe6dbde6a5320c4cee
[INFO] running `Command { std: "docker" "start" "-a" "2ff291efbf76a32d3a5a897fd335be55e428869037c6a6fe6dbde6a5320c4cee", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "2ff291efbf76a32d3a5a897fd335be55e428869037c6a6fe6dbde6a5320c4cee", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "2ff291efbf76a32d3a5a897fd335be55e428869037c6a6fe6dbde6a5320c4cee", kill_on_drop: false }`
[INFO] [stdout] 2ff291efbf76a32d3a5a897fd335be55e428869037c6a6fe6dbde6a5320c4cee
[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" "+8c32e313cccf7df531e2d49ffb8227bb92304aee" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 88d0c581d0d8e995a016235c0af757081120c33f1e120e028b10109d7bb865f1
[INFO] running `Command { std: "docker" "start" "-a" "88d0c581d0d8e995a016235c0af757081120c33f1e120e028b10109d7bb865f1", kill_on_drop: false }`
[INFO] [stderr]     Checking stdworld v0.1.1 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused variable: `w`
[INFO] [stdout]   --> src/lib.rs:72:68
[INFO] [stdout]    |
[INFO] [stdout] 72 |     pub fn set_var<W: EnvAccess, K: AsRef<OsStr>, V: AsRef<OsStr>>(w: W, key: K, value: V) {
[INFO] [stdout]    |                                                                    ^ help: if this is intentional, prefix it with an underscore: `_w`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `key`
[INFO] [stdout]   --> src/lib.rs:72:74
[INFO] [stdout]    |
[INFO] [stdout] 72 |     pub fn set_var<W: EnvAccess, K: AsRef<OsStr>, V: AsRef<OsStr>>(w: W, key: K, value: V) {
[INFO] [stdout]    |                                                                          ^^^ help: if this is intentional, prefix it with an underscore: `_key`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `value`
[INFO] [stdout]   --> src/lib.rs:72:82
[INFO] [stdout]    |
[INFO] [stdout] 72 |     pub fn set_var<W: EnvAccess, K: AsRef<OsStr>, V: AsRef<OsStr>>(w: W, key: K, value: V) {
[INFO] [stdout]    |                                                                                  ^^^^^ help: if this is intentional, prefix it with an underscore: `_value`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `w`
[INFO] [stdout]   --> src/lib.rs:76:50
[INFO] [stdout]    |
[INFO] [stdout] 76 |     pub fn var_os<W: EnvAccess, K: AsRef<OsStr>>(w: W, key: K) -> Option<OsString> {
[INFO] [stdout]    |                                                  ^ help: if this is intentional, prefix it with an underscore: `_w`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `key`
[INFO] [stdout]   --> src/lib.rs:76:56
[INFO] [stdout]    |
[INFO] [stdout] 76 |     pub fn var_os<W: EnvAccess, K: AsRef<OsStr>>(w: W, key: K) -> Option<OsString> {
[INFO] [stdout]    |                                                        ^^^ help: if this is intentional, prefix it with an underscore: `_key`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `w`
[INFO] [stdout]   --> src/lib.rs:81:34
[INFO] [stdout]    |
[INFO] [stdout] 81 |     pub fn vars_os<W: EnvAccess>(w: W) -> VarsOs {
[INFO] [stdout]    |                                  ^ help: if this is intentional, prefix it with an underscore: `_w`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `w`
[INFO] [stdout]   --> src/lib.rs:93:41
[INFO] [stdout]    |
[INFO] [stdout] 93 |     pub fn spawn<W: ThreadAccess, F, T>(w: W, f: F) -> JoinHandle<T>
[INFO] [stdout]    |                                         ^ help: if this is intentional, prefix it with an underscore: `_w`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `f`
[INFO] [stdout]   --> src/lib.rs:93:47
[INFO] [stdout]    |
[INFO] [stdout] 93 |     pub fn spawn<W: ThreadAccess, F, T>(w: W, f: F) -> JoinHandle<T>
[INFO] [stdout]    |                                               ^ help: if this is intentional, prefix it with an underscore: `_f`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function `new` is never used
[INFO] [stdout]    --> src/lib.rs:141:15
[INFO] [stdout]     |
[INFO] [stdout] 140 | impl MainWorld {
[INFO] [stdout]     | -------------- associated function in this implementation
[INFO] [stdout] 141 |     unsafe fn new() -> MainWorld {
[INFO] [stdout]     |               ^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function `new` is never used
[INFO] [stdout]    --> src/lib.rs:147:15
[INFO] [stdout]     |
[INFO] [stdout] 146 | impl ThreadWorld {
[INFO] [stdout]     | ---------------- associated function in this implementation
[INFO] [stdout] 147 |     unsafe fn new() -> ThreadWorld {
[INFO] [stdout]     |               ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function `new` is never used
[INFO] [stdout]    --> src/lib.rs:153:15
[INFO] [stdout]     |
[INFO] [stdout] 152 | impl UnloadableMainWorld {
[INFO] [stdout]     | ------------------------ associated function in this implementation
[INFO] [stdout] 153 |     unsafe fn new() -> UnloadableMainWorld {
[INFO] [stdout]     |               ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `w`
[INFO] [stdout]   --> src/lib.rs:72:68
[INFO] [stdout]    |
[INFO] [stdout] 72 |     pub fn set_var<W: EnvAccess, K: AsRef<OsStr>, V: AsRef<OsStr>>(w: W, key: K, value: V) {
[INFO] [stdout]    |                                                                    ^ help: if this is intentional, prefix it with an underscore: `_w`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 0.18s
[INFO] [stdout] warning: unused variable: `key`
[INFO] [stdout]   --> src/lib.rs:72:74
[INFO] [stdout]    |
[INFO] [stdout] 72 |     pub fn set_var<W: EnvAccess, K: AsRef<OsStr>, V: AsRef<OsStr>>(w: W, key: K, value: V) {
[INFO] [stdout]    |                                                                          ^^^ help: if this is intentional, prefix it with an underscore: `_key`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `value`
[INFO] [stdout]   --> src/lib.rs:72:82
[INFO] [stdout]    |
[INFO] [stdout] 72 |     pub fn set_var<W: EnvAccess, K: AsRef<OsStr>, V: AsRef<OsStr>>(w: W, key: K, value: V) {
[INFO] [stdout]    |                                                                                  ^^^^^ help: if this is intentional, prefix it with an underscore: `_value`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `w`
[INFO] [stdout]   --> src/lib.rs:76:50
[INFO] [stdout]    |
[INFO] [stdout] 76 |     pub fn var_os<W: EnvAccess, K: AsRef<OsStr>>(w: W, key: K) -> Option<OsString> {
[INFO] [stdout]    |                                                  ^ help: if this is intentional, prefix it with an underscore: `_w`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `key`
[INFO] [stdout]   --> src/lib.rs:76:56
[INFO] [stdout]    |
[INFO] [stdout] 76 |     pub fn var_os<W: EnvAccess, K: AsRef<OsStr>>(w: W, key: K) -> Option<OsString> {
[INFO] [stdout]    |                                                        ^^^ help: if this is intentional, prefix it with an underscore: `_key`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `w`
[INFO] [stdout]   --> src/lib.rs:81:34
[INFO] [stdout]    |
[INFO] [stdout] 81 |     pub fn vars_os<W: EnvAccess>(w: W) -> VarsOs {
[INFO] [stdout]    |                                  ^ help: if this is intentional, prefix it with an underscore: `_w`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `w`
[INFO] [stdout]   --> src/lib.rs:93:41
[INFO] [stdout]    |
[INFO] [stdout] 93 |     pub fn spawn<W: ThreadAccess, F, T>(w: W, f: F) -> JoinHandle<T>
[INFO] [stdout]    |                                         ^ help: if this is intentional, prefix it with an underscore: `_w`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `f`
[INFO] [stdout]   --> src/lib.rs:93:47
[INFO] [stdout]    |
[INFO] [stdout] 93 |     pub fn spawn<W: ThreadAccess, F, T>(w: W, f: F) -> JoinHandle<T>
[INFO] [stdout]    |                                               ^ help: if this is intentional, prefix it with an underscore: `_f`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function `new` is never used
[INFO] [stdout]    --> src/lib.rs:141:15
[INFO] [stdout]     |
[INFO] [stdout] 140 | impl MainWorld {
[INFO] [stdout]     | -------------- associated function in this implementation
[INFO] [stdout] 141 |     unsafe fn new() -> MainWorld {
[INFO] [stdout]     |               ^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function `new` is never used
[INFO] [stdout]    --> src/lib.rs:147:15
[INFO] [stdout]     |
[INFO] [stdout] 146 | impl ThreadWorld {
[INFO] [stdout]     | ---------------- associated function in this implementation
[INFO] [stdout] 147 |     unsafe fn new() -> ThreadWorld {
[INFO] [stdout]     |               ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function `new` is never used
[INFO] [stdout]    --> src/lib.rs:153:15
[INFO] [stdout]     |
[INFO] [stdout] 152 | impl UnloadableMainWorld {
[INFO] [stdout]     | ------------------------ associated function in this implementation
[INFO] [stdout] 153 |     unsafe fn new() -> UnloadableMainWorld {
[INFO] [stdout]     |               ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "88d0c581d0d8e995a016235c0af757081120c33f1e120e028b10109d7bb865f1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "88d0c581d0d8e995a016235c0af757081120c33f1e120e028b10109d7bb865f1", kill_on_drop: false }`
[INFO] [stdout] 88d0c581d0d8e995a016235c0af757081120c33f1e120e028b10109d7bb865f1