[INFO] fetching crate tracing-allocator 0.1.0...
[INFO] checking tracing-allocator-0.1.0 against master#936f2600b6c903b04387f74ed5cbce88bb06d243 for pr-91141
[INFO] extracting crate tracing-allocator 0.1.0 into /workspace/builds/worker-69/source
[INFO] validating manifest of crates.io crate tracing-allocator 0.1.0 on toolchain 936f2600b6c903b04387f74ed5cbce88bb06d243
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+936f2600b6c903b04387f74ed5cbce88bb06d243" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate tracing-allocator 0.1.0
[INFO] finished tweaking crates.io crate tracing-allocator 0.1.0
[INFO] tweaked toml for crates.io crate tracing-allocator 0.1.0 written to /workspace/builds/worker-69/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+936f2600b6c903b04387f74ed5cbce88bb06d243" "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" "+936f2600b6c903b04387f74ed5cbce88bb06d243" "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-69/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-69/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" "+936f2600b6c903b04387f74ed5cbce88bb06d243" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] a7771dc1ced5922d58428a14f91f7559c202809c4674a6724e5a61a8373fad35
[INFO] running `Command { std: "docker" "start" "-a" "a7771dc1ced5922d58428a14f91f7559c202809c4674a6724e5a61a8373fad35", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "a7771dc1ced5922d58428a14f91f7559c202809c4674a6724e5a61a8373fad35", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "a7771dc1ced5922d58428a14f91f7559c202809c4674a6724e5a61a8373fad35", kill_on_drop: false }`
[INFO] [stdout] a7771dc1ced5922d58428a14f91f7559c202809c4674a6724e5a61a8373fad35
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-69/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-69/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" "+936f2600b6c903b04387f74ed5cbce88bb06d243" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] cfba63e2684dbc57de159053382dc9ae70433bb3658e56c6652b7bedd28a8363
[INFO] running `Command { std: "docker" "start" "-a" "cfba63e2684dbc57de159053382dc9ae70433bb3658e56c6652b7bedd28a8363", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Checking time v0.1.44
[INFO] [stderr]     Checking tracing-allocator v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] error[E0432]: unresolved import `std::heap`
[INFO] [stdout]   --> src/lib.rs:10:10
[INFO] [stdout]    |
[INFO] [stdout] 10 | use std::heap::{Alloc, System, Layout, AllocErr};
[INFO] [stdout]    |          ^^^^ could not find `heap` in `std`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to previous error
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0432`.
[INFO] [stdout] 
[INFO] [stdout] error[E0432]: unresolved import `std::heap`
[INFO] [stdout]   --> src/lib.rs:10:10
[INFO] [stdout]    |
[INFO] [stdout] 10 | use std::heap::{Alloc, System, Layout, AllocErr};
[INFO] [stdout]    |          ^^^^ could not find `heap` in `std`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to previous error
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0432`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `tracing-allocator` due to 2 previous errors
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stderr] error: build failed
[INFO] running `Command { std: "docker" "inspect" "cfba63e2684dbc57de159053382dc9ae70433bb3658e56c6652b7bedd28a8363", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "cfba63e2684dbc57de159053382dc9ae70433bb3658e56c6652b7bedd28a8363", kill_on_drop: false }`
[INFO] [stdout] cfba63e2684dbc57de159053382dc9ae70433bb3658e56c6652b7bedd28a8363