[INFO] fetching crate writeable 0.5.4...
[INFO] checking writeable-0.5.4 against master#af4a5a13a15fa0c60e06321077ef452f769b42fd for pr-122960-2
[INFO] extracting crate writeable 0.5.4 into /workspace/builds/worker-5-tc1/source
[INFO] validating manifest of crates.io crate writeable 0.5.4 on toolchain af4a5a13a15fa0c60e06321077ef452f769b42fd
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+af4a5a13a15fa0c60e06321077ef452f769b42fd" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate writeable 0.5.4
[INFO] finished tweaking crates.io crate writeable 0.5.4
[INFO] tweaked toml for crates.io crate writeable 0.5.4 written to /workspace/builds/worker-5-tc1/source/Cargo.toml
[INFO] crate crates.io crate writeable 0.5.4 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" "+af4a5a13a15fa0c60e06321077ef452f769b42fd" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+af4a5a13a15fa0c60e06321077ef452f769b42fd" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 5a6daec21cb7106ea4993a7c1e0d773b632e6bb822e91fb089662d6072396a8b
[INFO] running `Command { std: "docker" "start" "-a" "5a6daec21cb7106ea4993a7c1e0d773b632e6bb822e91fb089662d6072396a8b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "5a6daec21cb7106ea4993a7c1e0d773b632e6bb822e91fb089662d6072396a8b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "5a6daec21cb7106ea4993a7c1e0d773b632e6bb822e91fb089662d6072396a8b", kill_on_drop: false }`
[INFO] [stdout] 5a6daec21cb7106ea4993a7c1e0d773b632e6bb822e91fb089662d6072396a8b
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+af4a5a13a15fa0c60e06321077ef452f769b42fd" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 3f96e4e40812f4c3715e82d04616a44e70d24758b5840b76ed8579b8d99b5108
[INFO] running `Command { std: "docker" "start" "-a" "3f96e4e40812f4c3715e82d04616a44e70d24758b5840b76ed8579b8d99b5108", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.148
[INFO] [stderr]    Compiling rayon-core v1.12.0
[INFO] [stderr]    Compiling syn v2.0.37
[INFO] [stderr]     Checking writeable v0.5.4 (/opt/rustwide/workdir)
[INFO] [stdout] warning: the item `Cow` is imported redundantly
[INFO] [stdout]  --> src/impls.rs:6:5
[INFO] [stdout]   |
[INFO] [stdout] 5 | use crate::*;
[INFO] [stdout]   |     -------- the item `Cow` is already imported here
[INFO] [stdout] 6 | use alloc::borrow::Cow;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `fmt` is imported redundantly
[INFO] [stdout]  --> src/impls.rs:7:5
[INFO] [stdout]   |
[INFO] [stdout] 5 | use crate::*;
[INFO] [stdout]   |     -------- the item `fmt` is already imported here
[INFO] [stdout] 6 | use alloc::borrow::Cow;
[INFO] [stdout] 7 | use core::fmt;
[INFO] [stdout]   |     ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Checking rayon v1.8.0
[INFO] [stderr]     Checking getrandom v0.2.10
[INFO] [stderr]     Checking atty v0.2.14
[INFO] [stderr]     Checking rand_core v0.6.4
[INFO] [stderr]     Checking rand_chacha v0.3.1
[INFO] [stderr]     Checking rand v0.8.5
[INFO] [stderr]    Compiling serde_derive v1.0.188
[INFO] [stderr]     Checking serde v1.0.188
[INFO] [stderr]     Checking serde_json v1.0.107
[INFO] [stderr]     Checking ciborium v0.2.1
[INFO] [stderr]     Checking tinytemplate v1.2.1
[INFO] [stderr]     Checking criterion v0.4.0
[INFO] [stdout] error[E0433]: failed to resolve: use of undeclared crate or module `icu_benchmark_macros`
[INFO] [stdout]  --> examples/writeable_message.rs:6:1
[INFO] [stdout]   |
[INFO] [stdout] 6 | icu_benchmark_macros::static_setup!();
[INFO] [stdout]   | ^^^^^^^^^^^^^^^^^^^^ use of undeclared crate or module `icu_benchmark_macros`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0433]: failed to resolve: use of undeclared crate or module `icu_benchmark_macros`
[INFO] [stdout]   --> examples/writeable_message.rs:48:5
[INFO] [stdout]    |
[INFO] [stdout] 48 |     icu_benchmark_macros::main_setup!();
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^ use of undeclared crate or module `icu_benchmark_macros`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 2 previous errors
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0433`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `writeable` (example "writeable_message") due to 3 previous errors
[INFO] [stdout] warning: struct `DisplayMessage` is never constructed
[INFO] [stdout]   --> benches/writeable.rs:28:8
[INFO] [stdout]    |
[INFO] [stdout] 28 | struct DisplayMessage<'s> {
[INFO] [stdout]    |        ^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `Cow` is imported redundantly
[INFO] [stdout]  --> src/impls.rs:6:5
[INFO] [stdout]   |
[INFO] [stdout] 5 | use crate::*;
[INFO] [stdout]   |     -------- the item `Cow` is already imported here
[INFO] [stdout] 6 | use alloc::borrow::Cow;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `fmt` is imported redundantly
[INFO] [stdout]  --> src/impls.rs:7:5
[INFO] [stdout]   |
[INFO] [stdout] 5 | use crate::*;
[INFO] [stdout]   |     -------- the item `fmt` is already imported here
[INFO] [stdout] 6 | use alloc::borrow::Cow;
[INFO] [stdout] 7 | use core::fmt;
[INFO] [stdout]   |     ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `Vec` is imported redundantly
[INFO] [stdout]   --> src/lib.rs:74:5
[INFO] [stdout]    |
[INFO] [stdout] 74 | use alloc::vec::Vec;
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^
[INFO] [stdout]   --> /rustc/af4a5a13a15fa0c60e06321077ef452f769b42fd/library/std/src/prelude/mod.rs:144:13
[INFO] [stdout]    |
[INFO] [stdout]    = note: the item `Vec` is already defined here
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 3 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "3f96e4e40812f4c3715e82d04616a44e70d24758b5840b76ed8579b8d99b5108", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "3f96e4e40812f4c3715e82d04616a44e70d24758b5840b76ed8579b8d99b5108", kill_on_drop: false }`
[INFO] [stdout] 3f96e4e40812f4c3715e82d04616a44e70d24758b5840b76ed8579b8d99b5108