[INFO] cloning repository https://github.com/nmeylan/rust-playground
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/nmeylan/rust-playground" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fnmeylan%2Frust-playground", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fnmeylan%2Frust-playground'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 933da4faabf989a6852420f61ae39ec724992c84
[INFO] checking nmeylan/rust-playground against master#506512391b1a75ae450d36c9420978402a91abcc for pr-125384
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fnmeylan%2Frust-playground" "/workspace/builds/worker-1-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-1-tc1/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/nmeylan/rust-playground on toolchain 506512391b1a75ae450d36c9420978402a91abcc
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+506512391b1a75ae450d36c9420978402a91abcc" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/nmeylan/rust-playground
[INFO] finished tweaking git repo https://github.com/nmeylan/rust-playground
[INFO] tweaked toml for git repo https://github.com/nmeylan/rust-playground written to /workspace/builds/worker-1-tc1/source/Cargo.toml
[INFO] crate git repo https://github.com/nmeylan/rust-playground 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" "+506512391b1a75ae450d36c9420978402a91abcc" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr] warning: virtual workspace defaulting to `resolver = "1"` despite one or more workspace members being on edition 2021 which implies `resolver = "2"`
[INFO] [stderr] note: to keep the current resolver, specify `workspace.resolver = "1"` in the workspace root's manifest
[INFO] [stderr] note: to use the edition 2021 resolver, specify `workspace.resolver = "2"` in the workspace root's manifest
[INFO] [stderr] note: for more details see https://doc.rust-lang.org/cargo/reference/resolver.html#resolver-versions
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded flamer v0.3.0
[INFO] [stderr]   Downloaded tokio-macros v1.5.1
[INFO] [stderr]   Downloaded get-size-derive v0.1.1
[INFO] [stderr]   Downloaded get-size v0.1.1
[INFO] [stderr]   Downloaded flame v0.2.2
[INFO] [stderr]   Downloaded libc v0.2.106
[INFO] [stderr]   Downloaded tokio v1.13.0
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-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:beeedbb442662e57d416641ecc3200b38e573c25b057896194468d05594dd835" "/opt/rustwide/cargo-home/bin/cargo" "+506512391b1a75ae450d36c9420978402a91abcc" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 20e88f6a76251eab88a54da4988dff15b775e4ab596c0055387790923001cc92
[INFO] running `Command { std: "docker" "start" "-a" "20e88f6a76251eab88a54da4988dff15b775e4ab596c0055387790923001cc92", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "20e88f6a76251eab88a54da4988dff15b775e4ab596c0055387790923001cc92", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "20e88f6a76251eab88a54da4988dff15b775e4ab596c0055387790923001cc92", kill_on_drop: false }`
[INFO] [stdout] 20e88f6a76251eab88a54da4988dff15b775e4ab596c0055387790923001cc92
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-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=allow" "-e" "RUSTDOCFLAGS=--cap-lints=allow" "-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:beeedbb442662e57d416641ecc3200b38e573c25b057896194468d05594dd835" "/opt/rustwide/cargo-home/bin/cargo" "+506512391b1a75ae450d36c9420978402a91abcc" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 778213f82ead8e991b35ea174098d2cf5ffc0a0d6afedd43afbad2cc7376a8fc
[INFO] running `Command { std: "docker" "start" "-a" "778213f82ead8e991b35ea174098d2cf5ffc0a0d6afedd43afbad2cc7376a8fc", kill_on_drop: false }`
[INFO] [stderr] warning: virtual workspace defaulting to `resolver = "1"` despite one or more workspace members being on edition 2021 which implies `resolver = "2"`
[INFO] [stderr] note: to keep the current resolver, specify `workspace.resolver = "1"` in the workspace root's manifest
[INFO] [stderr] note: to use the edition 2021 resolver, specify `workspace.resolver = "2"` in the workspace root's manifest
[INFO] [stderr] note: for more details see https://doc.rust-lang.org/cargo/reference/resolver.html#resolver-versions
[INFO] [stderr]    Compiling libc v0.2.106
[INFO] [stderr]    Compiling proc-macro2 v1.0.32
[INFO] [stderr]    Compiling syn v1.0.81
[INFO] [stderr]    Compiling serde v1.0.130
[INFO] [stderr]    Compiling serde_json v1.0.72
[INFO] [stderr]    Compiling proc-macro2 v0.4.30
[INFO] [stderr]    Compiling syn v0.15.44
[INFO] [stderr]    Compiling itoa v0.4.8
[INFO] [stderr]    Compiling tokio v1.13.0
[INFO] [stderr]     Checking once_cell v1.8.0
[INFO] [stderr]     Checking fixedbitset v0.4.0
[INFO] [stderr]     Checking petgraph v0.6.0
[INFO] [stderr]    Compiling quote v0.6.13
[INFO] [stderr]    Compiling quote v1.0.10
[INFO] [stderr]     Checking parking_lot_core v0.8.5
[INFO] [stderr]     Checking signal-hook-registry v1.4.0
[INFO] [stderr]     Checking mio v0.7.14
[INFO] [stderr]     Checking thread-id v3.3.0
[INFO] [stderr]     Checking num_cpus v1.13.0
[INFO] [stderr]     Checking parking_lot v0.11.2
[INFO] [stderr]    Compiling serde_derive v1.0.130
[INFO] [stderr]    Compiling get-size-derive v0.1.1
[INFO] [stderr]    Compiling tokio-macros v1.5.1
[INFO] [stderr]     Checking get-size v0.1.1
[INFO] [stderr]    Compiling flame v0.2.2
[INFO] [stderr]    Compiling flamer v0.3.0
[INFO] [stderr]     Checking sandbox v0.1.0 (/opt/rustwide/workdir/sandbox)
[INFO] [stdout] error[E0412]: cannot find type `Cow` in this scope
[INFO] [stdout]  --> sandbox/graph/main.rs:4:16
[INFO] [stdout]   |
[INFO] [stdout] 4 |     pub token: Cow<>
[INFO] [stdout]   |                ^^^ not found in this scope
[INFO] [stdout]   |
[INFO] [stdout] help: consider importing this enum
[INFO] [stdout]   |
[INFO] [stdout] 1 + use std::borrow::Cow;
[INFO] [stdout]   |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0432]: unresolved import `std::default::default`
[INFO] [stdout]  --> sandbox/hasher/main.rs:5:5
[INFO] [stdout]   |
[INFO] [stdout] 5 | use std::default::default;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^ no `default` in `default`
[INFO] [stdout]   |
[INFO] [stdout] help: a similar name exists in the module
[INFO] [stdout]   |
[INFO] [stdout] 5 | use std::default::Default;
[INFO] [stdout]   |                   ~~~~~~~
[INFO] [stdout] help: consider importing one of these items instead
[INFO] [stdout]   |
[INFO] [stdout] 5 | use core::default;
[INFO] [stdout]   |     ~~~~~~~~~~~~~
[INFO] [stdout] 5 | use std::default;
[INFO] [stdout]   |     ~~~~~~~~~~~~
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0412]: cannot find type `Cow` in this scope
[INFO] [stdout]  --> sandbox/graph/main.rs:4:16
[INFO] [stdout]   |
[INFO] [stdout] 4 |     pub token: Cow<>
[INFO] [stdout]   |                ^^^ not found in this scope
[INFO] [stdout]   |
[INFO] [stdout] help: consider importing this enum
[INFO] [stdout]   |
[INFO] [stdout] 1 + use std::borrow::Cow;
[INFO] [stdout]   |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0635]: unknown feature `default_free_fn`
[INFO] [stdout]  --> sandbox/hasher/main.rs:1:12
[INFO] [stdout]   |
[INFO] [stdout] 1 | #![feature(default_free_fn)]
[INFO] [stdout]   |            ^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 1 previous error
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0412`.
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 1 previous error
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0412`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `sandbox` (bin "graph" test) due to 2 previous errors
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stderr] error: could not compile `sandbox` (bin "graph") due to 2 previous errors
[INFO] [stdout] error: aborting due to 2 previous errors
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] Some errors have detailed explanations: E0432, E0635.
[INFO] [stdout] 
[INFO] [stdout] For more information about an error, try `rustc --explain E0432`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `sandbox` (bin "hasher" test) due to 3 previous errors
[INFO] [stdout] error[E0432]: unresolved import `std::default::default`
[INFO] [stdout]  --> sandbox/hasher/main.rs:5:5
[INFO] [stdout]   |
[INFO] [stdout] 5 | use std::default::default;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^ no `default` in `default`
[INFO] [stdout]   |
[INFO] [stdout] help: a similar name exists in the module
[INFO] [stdout]   |
[INFO] [stdout] 5 | use std::default::Default;
[INFO] [stdout]   |                   ~~~~~~~
[INFO] [stdout] help: consider importing one of these items instead
[INFO] [stdout]   |
[INFO] [stdout] 5 | use core::default;
[INFO] [stdout]   |     ~~~~~~~~~~~~~
[INFO] [stdout] 5 | use std::default;
[INFO] [stdout]   |     ~~~~~~~~~~~~
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0635]: unknown feature `default_free_fn`
[INFO] [stdout]  --> sandbox/hasher/main.rs:1:12
[INFO] [stdout]   |
[INFO] [stdout] 1 | #![feature(default_free_fn)]
[INFO] [stdout]   |            ^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 2 previous errors
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] Some errors have detailed explanations: E0432, E0635.
[INFO] [stdout] 
[INFO] [stdout] For more information about an error, try `rustc --explain E0432`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `sandbox` (bin "hasher") due to 3 previous errors
[INFO] running `Command { std: "docker" "inspect" "778213f82ead8e991b35ea174098d2cf5ffc0a0d6afedd43afbad2cc7376a8fc", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "778213f82ead8e991b35ea174098d2cf5ffc0a0d6afedd43afbad2cc7376a8fc", kill_on_drop: false }`
[INFO] [stdout] 778213f82ead8e991b35ea174098d2cf5ffc0a0d6afedd43afbad2cc7376a8fc