[INFO] cloning repository https://github.com/mdibaiee/rust-memory-playground
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/mdibaiee/rust-memory-playground" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fmdibaiee%2Frust-memory-playground", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fmdibaiee%2Frust-memory-playground'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 0facc24fa7c301c7a11e29c831d3bc28bd17064d
[INFO] testing mdibaiee/rust-memory-playground against 1.99.0-beta.1+cargoflags=--release for beta-release-1.99-2
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fmdibaiee%2Frust-memory-playground" "/workspace/builds/worker-4-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-4-tc2/source'...
[INFO] [stderr] done.
[INFO] started tweaking git repo https://github.com/mdibaiee/rust-memory-playground
[INFO] finished tweaking git repo https://github.com/mdibaiee/rust-memory-playground
[INFO] tweaked toml for git repo https://github.com/mdibaiee/rust-memory-playground written to /workspace/builds/worker-4-tc2/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/mdibaiee/rust-memory-playground on toolchain 1.99.0-beta.1
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1.99.0-beta.1" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/mdibaiee/rust-memory-playground 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" "+1.99.0-beta.1" "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]   |
[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-4-tc2/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc2/target:/opt/rustwide/target:rw,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" "-m" "1610612736" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:8683fc1fc2eb5c9ac98e0d076ab094b2ffac7f99da555d2b6a2e27f346de2ec7" "sleep" "infinity", kill_on_drop: false }`
[INFO] [stdout] d3b66a33e73ef178dc836eb4ffdcd550ed2bde73444a885aee2526c107355312
[INFO] running `Command { std: "docker" "start" "d3b66a33e73ef178dc836eb4ffdcd550ed2bde73444a885aee2526c107355312", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "d3b66a33e73ef178dc836eb4ffdcd550ed2bde73444a885aee2526c107355312", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "exec" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-w" "/opt/rustwide/workdir" "--user" "0:0" "d3b66a33e73ef178dc836eb4ffdcd550ed2bde73444a885aee2526c107355312" "/opt/rustwide/cargo-home/bin/cargo" "+1.99.0-beta.1" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "d3b66a33e73ef178dc836eb4ffdcd550ed2bde73444a885aee2526c107355312", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "exec" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=warn" "-e" "RUSTDOCFLAGS=--cap-lints=warn" "-w" "/opt/rustwide/workdir" "--user" "0:0" "d3b66a33e73ef178dc836eb4ffdcd550ed2bde73444a885aee2526c107355312" "/opt/rustwide/cargo-home/bin/cargo" "+1.99.0-beta.1" "build" "--frozen" "--message-format=json" "--release", 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]   |
[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 proc-macro2 v1.0.39
[INFO] [stderr]    Compiling syn v1.0.96
[INFO] [stderr]    Compiling libc v0.2.126
[INFO] [stderr]    Compiling memchr v2.5.0
[INFO] [stderr]    Compiling serde_derive v1.0.137
[INFO] [stderr]    Compiling serde v1.0.137
[INFO] [stderr]    Compiling smallvec v1.8.0
[INFO] [stderr]    Compiling gimli v0.26.1
[INFO] [stderr]    Compiling serde_json v1.0.81
[INFO] [stderr]    Compiling backtrace v0.3.65
[INFO] [stderr]    Compiling miniz_oxide v0.5.3
[INFO] [stderr]    Compiling rustc-demangle v0.1.21
[INFO] [stderr]    Compiling thousands v0.2.0
[INFO] [stderr]    Compiling str-program v0.1.0 (/opt/rustwide/workdir/str-program)
[INFO] [stderr]    Compiling stack-program v0.1.0 (/opt/rustwide/workdir/stack-program)
[INFO] [stderr]    Compiling stack-and-heap-program v0.1.0 (/opt/rustwide/workdir/stack-and-heap-program)
[INFO] [stdout] warning: unused variable: `v`
[INFO] [stdout]   --> str-program/src/main.rs:11:13
[INFO] [stdout]    |
[INFO] [stdout] 11 |         let v = hello();
[INFO] [stdout]    |             ^ help: if this is intentional, prefix it with an underscore: `_v`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]    Compiling refcell-program v0.1.0 (/opt/rustwide/workdir/refcell-program)
[INFO] [stderr]    Compiling string-program v0.1.0 (/opt/rustwide/workdir/string-program)
[INFO] [stdout] warning: unused variable: `second`
[INFO] [stdout]  --> refcell-program/src/main.rs:7:9
[INFO] [stdout]   |
[INFO] [stdout] 7 |     let second = refcell_str.clone();
[INFO] [stdout]   |         ^^^^^^ help: if this is intentional, prefix it with an underscore: `_second`
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]    Compiling object v0.28.4
[INFO] [stderr]    Compiling quote v1.0.18
[INFO] [stderr]    Compiling parking_lot_core v0.8.5
[INFO] [stderr]    Compiling parking_lot v0.11.2
[INFO] [stderr]    Compiling addr2line v0.17.0
[INFO] [stderr]    Compiling dhat v0.3.0
[INFO] [stderr]    Compiling box-str-program v0.1.0 (/opt/rustwide/workdir/box-str-program)
[INFO] [stderr]    Compiling box-str-dhat v0.1.0 (/opt/rustwide/workdir/box-str-dhat)
[INFO] [stderr]    Compiling string-dhat v0.1.0 (/opt/rustwide/workdir/string-dhat)
[INFO] [stderr]     Finished `release` profile [optimized] target(s) in 19.05s
[INFO] running `Command { std: "docker" "inspect" "d3b66a33e73ef178dc836eb4ffdcd550ed2bde73444a885aee2526c107355312", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "exec" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=warn" "-e" "RUSTDOCFLAGS=--cap-lints=warn" "-w" "/opt/rustwide/workdir" "--user" "0:0" "d3b66a33e73ef178dc836eb4ffdcd550ed2bde73444a885aee2526c107355312" "/opt/rustwide/cargo-home/bin/cargo" "+1.99.0-beta.1" "test" "--frozen" "--no-run" "--message-format=json" "--release", 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]   |
[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 str-program v0.1.0 (/opt/rustwide/workdir/str-program)
[INFO] [stderr]    Compiling stack-program v0.1.0 (/opt/rustwide/workdir/stack-program)
[INFO] [stderr]    Compiling stack-and-heap-program v0.1.0 (/opt/rustwide/workdir/stack-and-heap-program)
[INFO] [stderr]    Compiling refcell-program v0.1.0 (/opt/rustwide/workdir/refcell-program)
[INFO] [stderr]    Compiling string-program v0.1.0 (/opt/rustwide/workdir/string-program)
[INFO] [stderr]    Compiling box-str-program v0.1.0 (/opt/rustwide/workdir/box-str-program)
[INFO] [stderr]    Compiling box-str-dhat v0.1.0 (/opt/rustwide/workdir/box-str-dhat)
[INFO] [stderr]    Compiling string-dhat v0.1.0 (/opt/rustwide/workdir/string-dhat)
[INFO] [stdout] warning: unused variable: `second`
[INFO] [stdout]  --> refcell-program/src/main.rs:7:9
[INFO] [stdout]   |
[INFO] [stdout] 7 |     let second = refcell_str.clone();
[INFO] [stdout]   |         ^^^^^^ help: if this is intentional, prefix it with an underscore: `_second`
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `v`
[INFO] [stdout]   --> str-program/src/main.rs:11:13
[INFO] [stdout]    |
[INFO] [stdout] 11 |         let v = hello();
[INFO] [stdout]    |             ^ help: if this is intentional, prefix it with an underscore: `_v`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `release` profile [optimized] target(s) in 0.49s
[INFO] running `Command { std: "docker" "inspect" "d3b66a33e73ef178dc836eb4ffdcd550ed2bde73444a885aee2526c107355312", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "exec" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=warn" "-e" "RUSTDOCFLAGS=--cap-lints=warn" "-w" "/opt/rustwide/workdir" "--user" "0:0" "d3b66a33e73ef178dc836eb4ffdcd550ed2bde73444a885aee2526c107355312" "/opt/rustwide/cargo-home/bin/cargo" "+1.99.0-beta.1" "test" "--frozen" "--release", 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]   |
[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] warning: unused variable: `v`
[INFO] [stderr]   --> str-program/src/main.rs:11:13
[INFO] [stderr]    |
[INFO] [stderr] 11 |         let v = hello();
[INFO] [stderr]    |             ^ help: if this is intentional, prefix it with an underscore: `_v`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `second`
[INFO] [stderr]  --> refcell-program/src/main.rs:7:9
[INFO] [stderr]   |
[INFO] [stderr] 7 |     let second = refcell_str.clone();
[INFO] [stderr]   |         ^^^^^^ help: if this is intentional, prefix it with an underscore: `_second`
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default
[INFO] [stderr] 
[INFO] [stderr] warning: `str-program` (bin "str-program" test) generated 1 warning (run `cargo fix --bin "str-program" -p str-program --tests` to apply 1 suggestion)
[INFO] [stderr] warning: `refcell-program` (bin "refcell-program" test) generated 1 warning (run `cargo fix --bin "refcell-program" -p refcell-program --tests` to apply 1 suggestion)
[INFO] [stderr]     Finished `release` profile [optimized] target(s) in 0.07s
[INFO] [stderr]      Running unittests src/main.rs (/opt/rustwide/target/release/deps/box_str_dhat-2c6a6a4db572c1ca)
[INFO] [stdout] 
[INFO] [stdout] running 0 tests
[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] [stderr]      Running unittests src/main.rs (/opt/rustwide/target/release/deps/box_str_program-9cd2d8f285daeb73)
[INFO] [stdout] 
[INFO] [stdout] running 0 tests
[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] [stderr]      Running unittests src/main.rs (/opt/rustwide/target/release/deps/refcell_program-fba780d8f20cff5c)
[INFO] [stdout] 
[INFO] [stdout] running 0 tests
[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] [stderr]      Running unittests src/main.rs (/opt/rustwide/target/release/deps/stack_and_heap_program-83d38f29491a7f70)
[INFO] [stdout] 
[INFO] [stdout] running 0 tests
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stderr]      Running unittests src/main.rs (/opt/rustwide/target/release/deps/stack_program-b3e24ce1d26aef08)
[INFO] [stdout] 
[INFO] [stderr]      Running unittests src/main.rs (/opt/rustwide/target/release/deps/str_program-63fe782854130c89)
[INFO] [stderr]      Running unittests src/main.rs (/opt/rustwide/target/release/deps/string_dhat-247cac5ad2b8e083)
[INFO] [stdout] 
[INFO] [stdout] running 0 tests
[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 0 tests
[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 0 tests
[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] [stderr]      Running unittests src/main.rs (/opt/rustwide/target/release/deps/string_program-881c7c6eed94d7f3)
[INFO] [stdout] 
[INFO] [stdout] running 0 tests
[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] running `Command { std: "docker" "inspect" "d3b66a33e73ef178dc836eb4ffdcd550ed2bde73444a885aee2526c107355312", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "d3b66a33e73ef178dc836eb4ffdcd550ed2bde73444a885aee2526c107355312", kill_on_drop: false }`
[INFO] [stdout] d3b66a33e73ef178dc836eb4ffdcd550ed2bde73444a885aee2526c107355312
