[INFO] fetching crate uu_tee 0.0.8...
[INFO] checking uu_tee-0.0.8 against try#cac44d9528e3bbbdaa1537d187bd489ccc5de18c for pr-91141
[INFO] extracting crate uu_tee 0.0.8 into /workspace/builds/worker-13/source
[INFO] validating manifest of crates.io crate uu_tee 0.0.8 on toolchain cac44d9528e3bbbdaa1537d187bd489ccc5de18c
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+cac44d9528e3bbbdaa1537d187bd489ccc5de18c" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate uu_tee 0.0.8
[INFO] finished tweaking crates.io crate uu_tee 0.0.8
[INFO] tweaked toml for crates.io crate uu_tee 0.0.8 written to /workspace/builds/worker-13/source/Cargo.toml
[INFO] crate crates.io crate uu_tee 0.0.8 already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+cac44d9528e3bbbdaa1537d187bd489ccc5de18c" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded retain_mut v0.1.4
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-13/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-13/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@sha256:5736fa189c1c60b01babf4b8b698fe57b6ecc41933a7ff2e0b8d7a221459412b" "/opt/rustwide/cargo-home/bin/cargo" "+cac44d9528e3bbbdaa1537d187bd489ccc5de18c" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] e4e34ad7585dabddae75d6463e164531a8f421043b308e236c3ec1bbee98dc1a
[INFO] running `Command { std: "docker" "start" "-a" "e4e34ad7585dabddae75d6463e164531a8f421043b308e236c3ec1bbee98dc1a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "e4e34ad7585dabddae75d6463e164531a8f421043b308e236c3ec1bbee98dc1a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "e4e34ad7585dabddae75d6463e164531a8f421043b308e236c3ec1bbee98dc1a", kill_on_drop: false }`
[INFO] [stdout] e4e34ad7585dabddae75d6463e164531a8f421043b308e236c3ec1bbee98dc1a
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-13/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-13/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@sha256:5736fa189c1c60b01babf4b8b698fe57b6ecc41933a7ff2e0b8d7a221459412b" "/opt/rustwide/cargo-home/bin/cargo" "+cac44d9528e3bbbdaa1537d187bd489ccc5de18c" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 5a43951c164ccec4f339f1ce0f4c457d7cc2c5ec1648b780fb42961f6e442b94
[INFO] running `Command { std: "docker" "start" "-a" "5a43951c164ccec4f339f1ce0f4c457d7cc2c5ec1648b780fb42961f6e442b94", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.105
[INFO] [stderr]    Compiling proc-macro2 v1.0.30
[INFO] [stderr]    Compiling syn v1.0.80
[INFO] [stderr]     Checking wild v2.0.4
[INFO] [stderr]     Checking dunce v1.0.2
[INFO] [stderr]     Checking retain_mut v0.1.4
[INFO] [stderr]     Checking getopts v0.2.21
[INFO] [stderr]    Compiling quote v1.0.10
[INFO] [stderr]     Checking term_size v0.3.2
[INFO] [stderr]     Checking atty v0.2.14
[INFO] [stderr]     Checking textwrap v0.11.0
[INFO] [stderr]     Checking clap v2.33.3
[INFO] [stderr]     Checking uucore v0.0.10
[INFO] [stderr]    Compiling uucore_procs v0.0.7
[INFO] [stderr]     Checking uu_tee v0.0.8 (/opt/rustwide/workdir)
[INFO] [stdout] warning: an associated function with this name may be added to the standard library in the future
[INFO] [stdout]    --> src/tee.rs:167:22
[INFO] [stdout]     |
[INFO] [stdout] 167 |         self.writers.retain_mut(|writer| {
[INFO] [stdout]     |                      ^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unstable_name_collisions)]` on by default
[INFO] [stdout]     = warning: once this associated item is added to the standard library, the ambiguity may cause an error or change in behavior!
[INFO] [stdout]     = note: for more information, see issue #48919 <https://github.com/rust-lang/rust/issues/48919>
[INFO] [stdout]     = help: call with fully qualified syntax `retain_mut(...)` to keep using the current method
[INFO] [stdout]     = help: add `#![feature(vec_retain_mut)]` to the crate attributes to enable `Vec::<T, A>::retain_mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: an associated function with this name may be added to the standard library in the future
[INFO] [stdout]    --> src/tee.rs:181:22
[INFO] [stdout]     |
[INFO] [stdout] 181 |         self.writers.retain_mut(|writer| {
[INFO] [stdout]     |                      ^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = warning: once this associated item is added to the standard library, the ambiguity may cause an error or change in behavior!
[INFO] [stdout]     = note: for more information, see issue #48919 <https://github.com/rust-lang/rust/issues/48919>
[INFO] [stdout]     = help: call with fully qualified syntax `retain_mut(...)` to keep using the current method
[INFO] [stdout]     = help: add `#![feature(vec_retain_mut)]` to the crate attributes to enable `Vec::<T, A>::retain_mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: an associated function with this name may be added to the standard library in the future
[INFO] [stdout]    --> src/tee.rs:167:22
[INFO] [stdout]     |
[INFO] [stdout] 167 |         self.writers.retain_mut(|writer| {
[INFO] [stdout]     |                      ^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unstable_name_collisions)]` on by default
[INFO] [stdout]     = warning: once this associated item is added to the standard library, the ambiguity may cause an error or change in behavior!
[INFO] [stdout]     = note: for more information, see issue #48919 <https://github.com/rust-lang/rust/issues/48919>
[INFO] [stdout]     = help: call with fully qualified syntax `retain_mut(...)` to keep using the current method
[INFO] [stdout]     = help: add `#![feature(vec_retain_mut)]` to the crate attributes to enable `Vec::<T, A>::retain_mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: an associated function with this name may be added to the standard library in the future
[INFO] [stdout]    --> src/tee.rs:181:22
[INFO] [stdout]     |
[INFO] [stdout] 181 |         self.writers.retain_mut(|writer| {
[INFO] [stdout]     |                      ^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = warning: once this associated item is added to the standard library, the ambiguity may cause an error or change in behavior!
[INFO] [stdout]     = note: for more information, see issue #48919 <https://github.com/rust-lang/rust/issues/48919>
[INFO] [stdout]     = help: call with fully qualified syntax `retain_mut(...)` to keep using the current method
[INFO] [stdout]     = help: add `#![feature(vec_retain_mut)]` to the crate attributes to enable `Vec::<T, A>::retain_mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 12.07s
[INFO] running `Command { std: "docker" "inspect" "5a43951c164ccec4f339f1ce0f4c457d7cc2c5ec1648b780fb42961f6e442b94", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "5a43951c164ccec4f339f1ce0f4c457d7cc2c5ec1648b780fb42961f6e442b94", kill_on_drop: false }`
[INFO] [stdout] 5a43951c164ccec4f339f1ce0f4c457d7cc2c5ec1648b780fb42961f6e442b94