[INFO] fetching crate envchain 0.1.0...
[INFO] building envchain-0.1.0 against master#c7f6aa2869acdbf014d094c6e427e554e160b6db for pr-146237-2
[INFO] extracting crate envchain 0.1.0 into /workspace/builds/worker-3-tc1/source
[INFO] started tweaking crates.io crate envchain 0.1.0
[INFO] finished tweaking crates.io crate envchain 0.1.0
[INFO] tweaked toml for crates.io crate envchain 0.1.0 written to /workspace/builds/worker-3-tc1/source/Cargo.toml
[INFO] validating manifest of crates.io crate envchain 0.1.0 on toolchain c7f6aa2869acdbf014d094c6e427e554e160b6db
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+c7f6aa2869acdbf014d094c6e427e554e160b6db" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate crates.io crate envchain 0.1.0 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" "+c7f6aa2869acdbf014d094c6e427e554e160b6db" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded zvariant_utils v1.0.1
[INFO] [stderr]   Downloaded waker-fn v1.1.1
[INFO] [stderr]   Downloaded enumflags2_derive v0.7.9
[INFO] [stderr]   Downloaded zvariant_derive v3.15.2
[INFO] [stderr]   Downloaded event-listener-strategy v0.5.0
[INFO] [stderr]   Downloaded num v0.4.1
[INFO] [stderr]   Downloaded block-modes v0.8.1
[INFO] [stderr]   Downloaded async-task v4.7.0
[INFO] [stderr]   Downloaded async-broadcast v0.5.1
[INFO] [stderr]   Downloaded polling v3.6.0
[INFO] [stderr]   Downloaded syn v2.0.55
[INFO] [stderr]   Downloaded event-listener v5.2.0
[INFO] [stderr]   Downloaded async-recursion v1.1.0
[INFO] [stderr]   Downloaded serde_repr v0.1.18
[INFO] [stderr]   Downloaded event-listener-strategy v0.4.0
[INFO] [stderr]   Downloaded piper v0.2.1
[INFO] [stderr]   Downloaded blocking v1.5.1
[INFO] [stderr]   Downloaded concurrent-queue v2.4.0
[INFO] [stderr]   Downloaded xdg-home v1.1.0
[INFO] [stderr]   Downloaded zbus v3.15.2
[INFO] [stderr]   Downloaded num-complex v0.4.5
[INFO] [stderr]   Downloaded async-io v2.3.2
[INFO] [stderr]   Downloaded async-signal v0.2.5
[INFO] [stderr]   Downloaded event-listener v3.1.0
[INFO] [stderr]   Downloaded zbus_macros v3.15.2
[INFO] [stderr]   Downloaded secret-service v3.0.1
[INFO] [stderr]   Downloaded async-channel v2.2.0
[INFO] [stderr]   Downloaded async-lock v3.3.0
[INFO] [stderr]   Downloaded async-process v1.8.1
[INFO] [stderr]   Downloaded zbus_names v2.6.1
[INFO] [stderr]   Downloaded enumflags2 v0.7.9
[INFO] [stderr]   Downloaded zvariant v3.15.2
[INFO] [stderr]   Downloaded tokio v1.29.1
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-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" "+c7f6aa2869acdbf014d094c6e427e554e160b6db" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 38dabcf2fec5c8434c24bdf32d7b4085f9845500438193e6a3535e2428d01c02
[INFO] running `Command { std: "docker" "start" "-a" "38dabcf2fec5c8434c24bdf32d7b4085f9845500438193e6a3535e2428d01c02", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "38dabcf2fec5c8434c24bdf32d7b4085f9845500438193e6a3535e2428d01c02", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "38dabcf2fec5c8434c24bdf32d7b4085f9845500438193e6a3535e2428d01c02", kill_on_drop: false }`
[INFO] [stdout] 38dabcf2fec5c8434c24bdf32d7b4085f9845500438193e6a3535e2428d01c02
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+c7f6aa2869acdbf014d094c6e427e554e160b6db" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] a526fe493db46b43bfba96b3a2e8e9a865beb81286bae59d9baa15ea9c710036
[INFO] running `Command { std: "docker" "start" "-a" "a526fe493db46b43bfba96b3a2e8e9a865beb81286bae59d9baa15ea9c710036", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.79
[INFO] [stderr]    Compiling autocfg v1.1.0
[INFO] [stderr]    Compiling libc v0.2.153
[INFO] [stderr]    Compiling hashbrown v0.14.3
[INFO] [stderr]    Compiling toml_datetime v0.6.5
[INFO] [stderr]    Compiling serde v1.0.197
[INFO] [stderr]    Compiling memchr v2.7.1
[INFO] [stderr]    Compiling pin-project-lite v0.2.13
[INFO] [stderr]    Compiling rustix v0.38.32
[INFO] [stderr]    Compiling regex-syntax v0.8.2
[INFO] [stderr]    Compiling bitflags v2.5.0
[INFO] [stderr]    Compiling async-trait v0.1.79
[INFO] [stderr]    Compiling linux-raw-sys v0.4.13
[INFO] [stderr]    Compiling crypto-common v0.1.6
[INFO] [stderr]    Compiling cipher v0.3.0
[INFO] [stderr]    Compiling anstyle-parse v0.2.3
[INFO] [stderr]    Compiling tracing-core v0.1.32
[INFO] [stderr]    Compiling colorchoice v1.0.0
[INFO] [stderr]    Compiling digest v0.10.7
[INFO] [stderr]    Compiling anstyle v1.0.6
[INFO] [stderr]    Compiling anstyle-query v1.0.2
[INFO] [stderr]    Compiling bytes v1.5.0
[INFO] [stderr]    Compiling async-broadcast v0.5.1
[INFO] [stderr]    Compiling ordered-stream v0.2.0
[INFO] [stderr]    Compiling strsim v0.11.0
[INFO] [stderr]    Compiling num-traits v0.2.18
[INFO] [stderr]    Compiling slab v0.4.9
[INFO] [stderr]    Compiling memoffset v0.7.1
[INFO] [stderr]    Compiling num-bigint v0.4.4
[INFO] [stderr]    Compiling num-rational v0.4.1
[INFO] [stderr]    Compiling tokio v1.29.1
[INFO] [stderr]    Compiling anstream v0.6.13
[INFO] [stderr]    Compiling hmac v0.12.1
[INFO] [stderr]    Compiling aho-corasick v1.1.3
[INFO] [stderr]    Compiling sha1 v0.10.6
[INFO] [stderr]    Compiling hkdf v0.12.4
[INFO] [stderr]    Compiling sha2 v0.10.8
[INFO] [stderr]    Compiling block-modes v0.8.1
[INFO] [stderr]    Compiling aes v0.7.5
[INFO] [stderr]    Compiling quote v1.0.35
[INFO] [stderr]    Compiling indexmap v2.2.6
[INFO] [stderr]    Compiling syn v2.0.55
[INFO] [stderr]    Compiling syn v1.0.109
[INFO] [stderr]    Compiling getrandom v0.2.12
[INFO] [stderr]    Compiling signal-hook-registry v1.4.1
[INFO] [stderr]    Compiling mio v0.8.11
[INFO] [stderr]    Compiling socket2 v0.4.10
[INFO] [stderr]    Compiling xdg-home v1.1.0
[INFO] [stderr]    Compiling nix v0.26.4
[INFO] [stderr]    Compiling rtoolbox v0.0.2
[INFO] [stderr]    Compiling rand_core v0.6.4
[INFO] [stderr]    Compiling rpassword v7.3.1
[INFO] [stderr]    Compiling rand_chacha v0.3.1
[INFO] [stderr]    Compiling num-integer v0.1.46
[INFO] [stderr]    Compiling num-complex v0.4.5
[INFO] [stderr]    Compiling toml_edit v0.19.15
[INFO] [stderr]    Compiling terminal_size v0.3.0
[INFO] [stderr]    Compiling rand v0.8.5
[INFO] [stderr]    Compiling clap_builder v4.5.2
[INFO] [stderr]    Compiling num-iter v0.1.44
[INFO] [stderr]    Compiling regex-automata v0.4.6
[INFO] [stderr]    Compiling num v0.4.1
[INFO] [stderr]    Compiling proc-macro-crate v1.3.1
[INFO] [stderr]    Compiling zvariant_utils v1.0.1
[INFO] [stderr]    Compiling regex v1.10.4
[INFO] [stderr]    Compiling zvariant_derive v3.15.2
[INFO] [stderr]    Compiling derivative v2.2.0
[INFO] [stderr]    Compiling serde_derive v1.0.197
[INFO] [stderr]    Compiling enumflags2_derive v0.7.9
[INFO] [stderr]    Compiling futures-macro v0.3.30
[INFO] [stderr]    Compiling tracing-attributes v0.1.27
[INFO] [stderr]    Compiling serde_repr v0.1.18
[INFO] [stderr]    Compiling async-recursion v1.1.0
[INFO] [stderr]    Compiling clap_derive v4.5.3
[INFO] [stderr]    Compiling zbus_macros v3.15.2
[INFO] [stderr]    Compiling tracing v0.1.40
[INFO] [stderr]    Compiling futures-util v0.3.30
[INFO] [stderr]    Compiling clap v4.5.3
[INFO] [stderr]    Compiling enumflags2 v0.7.9
[INFO] [stderr]    Compiling zvariant v3.15.2
[INFO] [stderr]    Compiling zbus_names v2.6.1
[INFO] [stderr]    Compiling zbus v3.15.2
[INFO] [stderr]    Compiling secret-service v3.0.1
[INFO] [stderr]    Compiling envchain v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused return value of `exec` that must be used
[INFO] [stdout]    --> src/main.rs:109:9
[INFO] [stdout]     |
[INFO] [stdout] 109 |         Command::new(exe[0].clone()).args(args).envs(envs).exec();
[INFO] [stdout]     |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_must_use)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]     |
[INFO] [stdout] 109 |         let _ = Command::new(exe[0].clone()).args(args).envs(envs).exec();
[INFO] [stdout]     |         +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 58.21s
[INFO] running `Command { std: "docker" "inspect" "a526fe493db46b43bfba96b3a2e8e9a865beb81286bae59d9baa15ea9c710036", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "a526fe493db46b43bfba96b3a2e8e9a865beb81286bae59d9baa15ea9c710036", kill_on_drop: false }`
[INFO] [stdout] a526fe493db46b43bfba96b3a2e8e9a865beb81286bae59d9baa15ea9c710036
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+c7f6aa2869acdbf014d094c6e427e554e160b6db" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 0f25c100b451a515947466ee1d11622e16f9637dfce451945ef169395e16cd8f
[INFO] running `Command { std: "docker" "start" "-a" "0f25c100b451a515947466ee1d11622e16f9637dfce451945ef169395e16cd8f", kill_on_drop: false }`
[INFO] [stderr]    Compiling envchain v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused return value of `exec` that must be used
[INFO] [stdout]    --> src/main.rs:109:9
[INFO] [stdout]     |
[INFO] [stdout] 109 |         Command::new(exe[0].clone()).args(args).envs(envs).exec();
[INFO] [stdout]     |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_must_use)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]     |
[INFO] [stdout] 109 |         let _ = Command::new(exe[0].clone()).args(args).envs(envs).exec();
[INFO] [stdout]     |         +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.95s
[INFO] running `Command { std: "docker" "inspect" "0f25c100b451a515947466ee1d11622e16f9637dfce451945ef169395e16cd8f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "0f25c100b451a515947466ee1d11622e16f9637dfce451945ef169395e16cd8f", kill_on_drop: false }`
[INFO] [stdout] 0f25c100b451a515947466ee1d11622e16f9637dfce451945ef169395e16cd8f