[INFO] fetching crate cacher_hasher 0.1.1...
[INFO] testing cacher_hasher-0.1.1 against master#d98a5da813da67eb189387b8ccfb73cf481275d8+rustflags=-Copt-level=3 for pr-138759
[INFO] extracting crate cacher_hasher 0.1.1 into /workspace/builds/worker-4-tc1/source
[INFO] started tweaking crates.io crate cacher_hasher 0.1.1
[INFO] finished tweaking crates.io crate cacher_hasher 0.1.1
[INFO] tweaked toml for crates.io crate cacher_hasher 0.1.1 written to /workspace/builds/worker-4-tc1/source/Cargo.toml
[INFO] validating manifest of crates.io crate cacher_hasher 0.1.1 on toolchain d98a5da813da67eb189387b8ccfb73cf481275d8
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+d98a5da813da67eb189387b8ccfb73cf481275d8" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate crates.io crate cacher_hasher 0.1.1 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" "+d98a5da813da67eb189387b8ccfb73cf481275d8" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+d98a5da813da67eb189387b8ccfb73cf481275d8" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 74c3210377c47c6277522ea4e4cb3ca0a54808b97a4febc5b745532ad1002a00
[INFO] running `Command { std: "docker" "start" "-a" "74c3210377c47c6277522ea4e4cb3ca0a54808b97a4febc5b745532ad1002a00", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "74c3210377c47c6277522ea4e4cb3ca0a54808b97a4febc5b745532ad1002a00", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "74c3210377c47c6277522ea4e4cb3ca0a54808b97a4febc5b745532ad1002a00", kill_on_drop: false }`
[INFO] [stdout] 74c3210377c47c6277522ea4e4cb3ca0a54808b97a4febc5b745532ad1002a00
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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 -Copt-level=3" "-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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+d98a5da813da67eb189387b8ccfb73cf481275d8" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] b9743731ff09978819591baee0d97727d61e43b28b0c308e468e718e918a7458
[INFO] running `Command { std: "docker" "start" "-a" "b9743731ff09978819591baee0d97727d61e43b28b0c308e468e718e918a7458", kill_on_drop: false }`
[INFO] [stderr]    Compiling cacher_hasher v0.1.1 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused variable: `intensity`
[INFO] [stdout]  --> src/main.rs:7:21
[INFO] [stdout]   |
[INFO] [stdout] 7 | fn generate_workout(intensity: u32, random_number: u32) {
[INFO] [stdout]   |                     ^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_intensity`
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `random_number`
[INFO] [stdout]  --> src/main.rs:7:37
[INFO] [stdout]   |
[INFO] [stdout] 7 | fn generate_workout(intensity: u32, random_number: u32) {
[INFO] [stdout]   |                                     ^^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_random_number`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 0.74s
[INFO] running `Command { std: "docker" "inspect" "b9743731ff09978819591baee0d97727d61e43b28b0c308e468e718e918a7458", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "b9743731ff09978819591baee0d97727d61e43b28b0c308e468e718e918a7458", kill_on_drop: false }`
[INFO] [stdout] b9743731ff09978819591baee0d97727d61e43b28b0c308e468e718e918a7458
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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 -Copt-level=3" "-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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+d98a5da813da67eb189387b8ccfb73cf481275d8" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] ef391d6544897742b4dd61961eb6b2cebb66304264fb4f42b4ec8f72f1482ba9
[INFO] running `Command { std: "docker" "start" "-a" "ef391d6544897742b4dd61961eb6b2cebb66304264fb4f42b4ec8f72f1482ba9", kill_on_drop: false }`
[INFO] [stderr]    Compiling cacher_hasher v0.1.1 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused variable: `intensity`
[INFO] [stdout]  --> src/main.rs:7:21
[INFO] [stdout]   |
[INFO] [stdout] 7 | fn generate_workout(intensity: u32, random_number: u32) {
[INFO] [stdout]   |                     ^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_intensity`
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `random_number`
[INFO] [stdout]  --> src/main.rs:7:37
[INFO] [stdout]   |
[INFO] [stdout] 7 | fn generate_workout(intensity: u32, random_number: u32) {
[INFO] [stdout]   |                                     ^^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_random_number`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.78s
[INFO] running `Command { std: "docker" "inspect" "ef391d6544897742b4dd61961eb6b2cebb66304264fb4f42b4ec8f72f1482ba9", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "ef391d6544897742b4dd61961eb6b2cebb66304264fb4f42b4ec8f72f1482ba9", kill_on_drop: false }`
[INFO] [stdout] ef391d6544897742b4dd61961eb6b2cebb66304264fb4f42b4ec8f72f1482ba9
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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 -Copt-level=3" "-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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+d98a5da813da67eb189387b8ccfb73cf481275d8" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] 59bba58fa20e7ae547901cf2fed03f73d814dd22952a5a84eafd432d531bedfd
[INFO] running `Command { std: "docker" "start" "-a" "59bba58fa20e7ae547901cf2fed03f73d814dd22952a5a84eafd432d531bedfd", kill_on_drop: false }`
[INFO] [stderr] warning: unused variable: `intensity`
[INFO] [stderr]  --> src/main.rs:7:21
[INFO] [stderr]   |
[INFO] [stderr] 7 | fn generate_workout(intensity: u32, random_number: u32) {
[INFO] [stderr]   |                     ^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_intensity`
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(unused_variables)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `random_number`
[INFO] [stderr]  --> src/main.rs:7:37
[INFO] [stderr]   |
[INFO] [stderr] 7 | fn generate_workout(intensity: u32, random_number: u32) {
[INFO] [stderr]   |                                     ^^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_random_number`
[INFO] [stderr] 
[INFO] [stderr] warning: `cacher_hasher` (bin "cacher_hasher" test) generated 2 warnings
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.02s
[INFO] [stderr]      Running unittests src/lib.rs (/opt/rustwide/target/debug/deps/cacher_hasher-ddef539a0b176071)
[INFO] [stdout] 
[INFO] [stderr]      Running unittests src/main.rs (/opt/rustwide/target/debug/deps/cacher_hasher-11e0c72e082034f8)
[INFO] [stdout] running 1 test
[INFO] [stdout] test tests::caching_counter ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 1 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] running 0 tests
[INFO] [stderr]    Doc-tests cacher_hasher
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] running 1 test
[INFO] [stdout] test src/lib.rs - Cacher (line 10) ... FAILED
[INFO] [stdout] 
[INFO] [stdout] failures:
[INFO] [stdout] 
[INFO] [stdout] ---- src/lib.rs - Cacher (line 10) stdout ----
[INFO] [stdout] error[E0433]: failed to resolve: use of undeclared type `RefCell`
[INFO] [stdout]  --> src/lib.rs:11:19
[INFO] [stdout]   |
[INFO] [stdout] 3 | let ref_counter = RefCell::new(0);
[INFO] [stdout]   |                   ^^^^^^^ use of undeclared type `RefCell`
[INFO] [stdout]   |
[INFO] [stdout] help: consider importing this struct
[INFO] [stdout]   |
[INFO] [stdout] 2 + use std::cell::RefCell;
[INFO] [stdout]   |
[INFO] [stdout] 
[INFO] [stdout] error[E0433]: failed to resolve: use of undeclared type `Cacher`
[INFO] [stdout]  --> src/lib.rs:12:35
[INFO] [stdout]   |
[INFO] [stdout] 4 |  let mut cached_function_return = Cacher::new(|num| {
[INFO] [stdout]   |                                   ^^^^^^ use of undeclared type `Cacher`
[INFO] [stdout]   |
[INFO] [stdout] help: consider importing this struct
[INFO] [stdout]   |
[INFO] [stdout] 2 + use cacher_hasher::Cacher;
[INFO] [stdout]   |
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 2 previous errors
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0433`.
[INFO] [stdout] Couldn't compile the test.
[INFO] [stdout] 
[INFO] [stdout] failures:
[INFO] [stdout]     src/lib.rs - Cacher (line 10)
[INFO] [stdout] 
[INFO] [stdout] test result: FAILED. 0 passed; 1 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.11s
[INFO] [stdout] 
[INFO] [stderr] error: doctest failed, to rerun pass `--doc`
[INFO] running `Command { std: "docker" "inspect" "59bba58fa20e7ae547901cf2fed03f73d814dd22952a5a84eafd432d531bedfd", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "59bba58fa20e7ae547901cf2fed03f73d814dd22952a5a84eafd432d531bedfd", kill_on_drop: false }`
[INFO] [stdout] 59bba58fa20e7ae547901cf2fed03f73d814dd22952a5a84eafd432d531bedfd
