[INFO] cloning repository https://github.com/fal-works/rust-practice
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/fal-works/rust-practice" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Ffal-works%2Frust-practice", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Ffal-works%2Frust-practice'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 9b22b6a8a9e5dee6e57755da1345467214e186a8
[INFO] testing fal-works/rust-practice against try#ecabaf78506b7a4668d42dc20268c086b93f0fad for pr-87041
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Ffal-works%2Frust-practice" "/workspace/builds/worker-11/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-11/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/fal-works/rust-practice on toolchain ecabaf78506b7a4668d42dc20268c086b93f0fad
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+ecabaf78506b7a4668d42dc20268c086b93f0fad" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/fal-works/rust-practice
[INFO] finished tweaking git repo https://github.com/fal-works/rust-practice
[INFO] tweaked toml for git repo https://github.com/fal-works/rust-practice written to /workspace/builds/worker-11/source/Cargo.toml
[INFO] crate git repo https://github.com/fal-works/rust-practice already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+ecabaf78506b7a4668d42dc20268c086b93f0fad" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-11/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-11/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@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+ecabaf78506b7a4668d42dc20268c086b93f0fad" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 2d4c40caafd694ee84334b89f9f7cfee7cfcd3987942016f5eb02f15c43d8726
[INFO] running `Command { std: "docker" "start" "-a" "2d4c40caafd694ee84334b89f9f7cfee7cfcd3987942016f5eb02f15c43d8726", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "2d4c40caafd694ee84334b89f9f7cfee7cfcd3987942016f5eb02f15c43d8726", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "2d4c40caafd694ee84334b89f9f7cfee7cfcd3987942016f5eb02f15c43d8726", kill_on_drop: false }`
[INFO] [stdout] 2d4c40caafd694ee84334b89f9f7cfee7cfcd3987942016f5eb02f15c43d8726
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-11/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-11/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" "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@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+ecabaf78506b7a4668d42dc20268c086b93f0fad" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] aa752d7068310fbb16497590ba64ed34216b883b813bc2aed49b5c45a76d27c0
[INFO] running `Command { std: "docker" "start" "-a" "aa752d7068310fbb16497590ba64ed34216b883b813bc2aed49b5c45a76d27c0", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]    Compiling rust-practice v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]  --> src/main.rs:3:65
[INFO] [stdout]   |
[INFO] [stdout] 3 | fn scan<T>(s: &mut StdinLock, initial_value: T, fold_callback: &Fn(T, char) -> T) -> T {
[INFO] [stdout]   |                                                                 ^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn Fn(T, char) -> T`
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(bare_trait_objects)]` on by default
[INFO] [stdout]   = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]   = note: for more information, see issue #80165 <https://github.com/rust-lang/rust/issues/80165>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 5.99s
[INFO] running `Command { std: "docker" "inspect" "aa752d7068310fbb16497590ba64ed34216b883b813bc2aed49b5c45a76d27c0", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "aa752d7068310fbb16497590ba64ed34216b883b813bc2aed49b5c45a76d27c0", kill_on_drop: false }`
[INFO] [stdout] aa752d7068310fbb16497590ba64ed34216b883b813bc2aed49b5c45a76d27c0
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-11/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-11/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" "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@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+ecabaf78506b7a4668d42dc20268c086b93f0fad" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] a5ac836cc543e8485bc5908aac0b97358f6a0074253b85c9e669d1990ed4bf00
[INFO] running `Command { std: "docker" "start" "-a" "a5ac836cc543e8485bc5908aac0b97358f6a0074253b85c9e669d1990ed4bf00", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]    Compiling rust-practice v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]  --> src/main.rs:3:65
[INFO] [stdout]   |
[INFO] [stdout] 3 | fn scan<T>(s: &mut StdinLock, initial_value: T, fold_callback: &Fn(T, char) -> T) -> T {
[INFO] [stdout]   |                                                                 ^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn Fn(T, char) -> T`
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(bare_trait_objects)]` on by default
[INFO] [stdout]   = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]   = note: for more information, see issue #80165 <https://github.com/rust-lang/rust/issues/80165>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 1.67s
[INFO] running `Command { std: "docker" "inspect" "a5ac836cc543e8485bc5908aac0b97358f6a0074253b85c9e669d1990ed4bf00", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "a5ac836cc543e8485bc5908aac0b97358f6a0074253b85c9e669d1990ed4bf00", kill_on_drop: false }`
[INFO] [stdout] a5ac836cc543e8485bc5908aac0b97358f6a0074253b85c9e669d1990ed4bf00
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-11/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-11/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" "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@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+ecabaf78506b7a4668d42dc20268c086b93f0fad" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] 734872f43c978be05907a6da5bc3ced2bf31e44ca2fb9d1ff7f94d7e21e5350a
[INFO] running `Command { std: "docker" "start" "-a" "734872f43c978be05907a6da5bc3ced2bf31e44ca2fb9d1ff7f94d7e21e5350a", kill_on_drop: false }`
[INFO] [stdout] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout] running 0 tests
[INFO] [stderr]  --> src/main.rs:3:65
[INFO] [stdout] 
[INFO] [stderr]   |
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stderr] 3 | fn scan<T>(s: &mut StdinLock, initial_value: T, fold_callback: &Fn(T, char) -> T) -> T {
[INFO] [stdout] 
[INFO] [stderr]   |                                                                 ^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn Fn(T, char) -> T`
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(bare_trait_objects)]` on by default
[INFO] [stderr]   = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stderr]   = note: for more information, see issue #80165 <https://github.com/rust-lang/rust/issues/80165>
[INFO] [stderr] 
[INFO] [stderr] warning: 1 warning emitted
[INFO] [stderr] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.08s
[INFO] [stderr]      Running unittests (/opt/rustwide/target/debug/deps/rust_practice-30ca60556461012d)
[INFO] running `Command { std: "docker" "inspect" "734872f43c978be05907a6da5bc3ced2bf31e44ca2fb9d1ff7f94d7e21e5350a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "734872f43c978be05907a6da5bc3ced2bf31e44ca2fb9d1ff7f94d7e21e5350a", kill_on_drop: false }`
[INFO] [stdout] 734872f43c978be05907a6da5bc3ced2bf31e44ca2fb9d1ff7f94d7e21e5350a