[INFO] fetching crate stamm 0.2.0...
[INFO] testing stamm-0.2.0 against beta-2022-04-10 for beta-1.61-1
[INFO] extracting crate stamm 0.2.0 into /workspace/builds/worker-0/source
[INFO] validating manifest of crates.io crate stamm 0.2.0 on toolchain beta-2022-04-10
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2022-04-10" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate stamm 0.2.0
[INFO] finished tweaking crates.io crate stamm 0.2.0
[INFO] tweaked toml for crates.io crate stamm 0.2.0 written to /workspace/builds/worker-0/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2022-04-10" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2022-04-10" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/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:b0c94ce3c1162fcb8e57cac5b65ec2f72eabb1eebea4fcc35e269e823f681646" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2022-04-10" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 4ba5c5b6ee85ed7df8a0f9f64be1441e9d72d931592310fc96c7b5820eb0d662
[INFO] running `Command { std: "docker" "start" "-a" "4ba5c5b6ee85ed7df8a0f9f64be1441e9d72d931592310fc96c7b5820eb0d662", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "4ba5c5b6ee85ed7df8a0f9f64be1441e9d72d931592310fc96c7b5820eb0d662", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "4ba5c5b6ee85ed7df8a0f9f64be1441e9d72d931592310fc96c7b5820eb0d662", kill_on_drop: false }`
[INFO] [stdout] 4ba5c5b6ee85ed7df8a0f9f64be1441e9d72d931592310fc96c7b5820eb0d662
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/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=warn" "-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:b0c94ce3c1162fcb8e57cac5b65ec2f72eabb1eebea4fcc35e269e823f681646" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2022-04-10" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 83157459c88e62bff2cda5a291931debac2f09ac29a248d722192bc8d7313b12
[INFO] running `Command { std: "docker" "start" "-a" "83157459c88e62bff2cda5a291931debac2f09ac29a248d722192bc8d7313b12", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]    Compiling rayon v0.8.2
[INFO] [stderr]    Compiling stamm v0.2.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused label
[INFO] [stdout]    --> src/tree.rs:158:9
[INFO] [stdout]     |
[INFO] [stdout] 158 |         'l: loop {
[INFO] [stdout]     |         ^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_labels)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 2.53s
[INFO] running `Command { std: "docker" "inspect" "83157459c88e62bff2cda5a291931debac2f09ac29a248d722192bc8d7313b12", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "83157459c88e62bff2cda5a291931debac2f09ac29a248d722192bc8d7313b12", kill_on_drop: false }`
[INFO] [stdout] 83157459c88e62bff2cda5a291931debac2f09ac29a248d722192bc8d7313b12
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/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=warn" "-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:b0c94ce3c1162fcb8e57cac5b65ec2f72eabb1eebea4fcc35e269e823f681646" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2022-04-10" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 314167f9fe2073484155dd3e7533886f7de44f36a28802abe2ad259b3f726eb4
[INFO] running `Command { std: "docker" "start" "-a" "314167f9fe2073484155dd3e7533886f7de44f36a28802abe2ad259b3f726eb4", kill_on_drop: false }`
[INFO] [stderr]    Compiling stamm v0.2.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused label
[INFO] [stdout]    --> src/tree.rs:158:9
[INFO] [stdout]     |
[INFO] [stdout] 158 |         'l: loop {
[INFO] [stdout]     |         ^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_labels)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `Write` is imported redundantly
[INFO] [stdout]   --> examples/numeric_tree_example.rs:14:9
[INFO] [stdout]    |
[INFO] [stdout] 7  | use std::io::{stdin, stdout, Write};
[INFO] [stdout]    |                              ----- the item `Write` is already imported here
[INFO] [stdout] ...
[INFO] [stdout] 14 |     use std::io::Write;
[INFO] [stdout]    |         ^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]   --> examples/numeric_tree_example.rs:15:23
[INFO] [stdout]    |
[INFO] [stdout] 15 |     let mut f: File = try!(File::create(filename));
[INFO] [stdout]    |                       ^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(deprecated)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused label
[INFO] [stdout]    --> src/tree.rs:158:9
[INFO] [stdout]     |
[INFO] [stdout] 158 |         'l: loop {
[INFO] [stdout]     |         ^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_labels)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 1.24s
[INFO] [stderr]   Executable unittests src/lib.rs (/opt/rustwide/target/debug/deps/stamm-2ba75d0235c053ac)
[INFO] running `Command { std: "docker" "inspect" "314167f9fe2073484155dd3e7533886f7de44f36a28802abe2ad259b3f726eb4", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "314167f9fe2073484155dd3e7533886f7de44f36a28802abe2ad259b3f726eb4", kill_on_drop: false }`
[INFO] [stdout] 314167f9fe2073484155dd3e7533886f7de44f36a28802abe2ad259b3f726eb4
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/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=warn" "-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:b0c94ce3c1162fcb8e57cac5b65ec2f72eabb1eebea4fcc35e269e823f681646" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2022-04-10" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] 4db2adad0e46dd6b76e72a7023a2f54f996988f390ff86c98144a717dae5f500
[INFO] running `Command { std: "docker" "start" "-a" "4db2adad0e46dd6b76e72a7023a2f54f996988f390ff86c98144a717dae5f500", kill_on_drop: false }`
[INFO] [stderr] warning: unused label
[INFO] [stderr]    --> src/tree.rs:158:9
[INFO] [stderr]     |
[INFO] [stderr] 158 |         'l: loop {
[INFO] [stderr]     |         ^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(unused_labels)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: `stamm` (lib) generated 1 warning
[INFO] [stderr] warning: `stamm` (lib test) generated 1 warning (1 duplicate)
[INFO] [stderr] warning: the item `Write` is imported redundantly
[INFO] [stderr]   --> examples/numeric_tree_example.rs:14:9
[INFO] [stderr]    |
[INFO] [stderr] 7  | use std::io::{stdin, stdout, Write};
[INFO] [stderr]    |                              ----- the item `Write` is already imported here
[INFO] [stderr] ...
[INFO] [stderr] 14 |     use std::io::Write;
[INFO] [stderr]    |         ^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_imports)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stderr]   --> examples/numeric_tree_example.rs:15:23
[INFO] [stderr]    |
[INFO] [stderr] 15 |     let mut f: File = try!(File::create(filename));
[INFO] [stderr]    |                       ^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(deprecated)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: `stamm` (example "numeric_tree_example") generated 2 warnings
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.04s
[INFO] [stdout] 
[INFO] [stderr]      Running unittests src/lib.rs (/opt/rustwide/target/debug/deps/stamm-2ba75d0235c053ac)
[INFO] [stdout] running 0 tests
[INFO] [stderr]    Doc-tests stamm
[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] running `Command { std: "docker" "inspect" "4db2adad0e46dd6b76e72a7023a2f54f996988f390ff86c98144a717dae5f500", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "4db2adad0e46dd6b76e72a7023a2f54f996988f390ff86c98144a717dae5f500", kill_on_drop: false }`
[INFO] [stdout] 4db2adad0e46dd6b76e72a7023a2f54f996988f390ff86c98144a717dae5f500