[INFO] fetching crate alt-std 0.2.9...
[INFO] checking alt-std-0.2.9 against try#a4980311fb7bb9e7893708e6bd3fbbfb2819fd3d for pr-145342-1
[INFO] extracting crate alt-std 0.2.9 into /workspace/builds/worker-5-tc2/source
[INFO] started tweaking crates.io crate alt-std 0.2.9
[INFO] finished tweaking crates.io crate alt-std 0.2.9
[INFO] tweaked toml for crates.io crate alt-std 0.2.9 written to /workspace/builds/worker-5-tc2/source/Cargo.toml
[INFO] validating manifest of crates.io crate alt-std 0.2.9 on toolchain a4980311fb7bb9e7893708e6bd3fbbfb2819fd3d
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+a4980311fb7bb9e7893708e6bd3fbbfb2819fd3d" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+a4980311fb7bb9e7893708e6bd3fbbfb2819fd3d" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]      Locking 1 package to latest compatible version
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+a4980311fb7bb9e7893708e6bd3fbbfb2819fd3d" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc2/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@sha256:7ad1b28ee6f5f7f699f6cf7015098d6ccdd96d6f2d78dd06228f5b4c9faf309c" "/opt/rustwide/cargo-home/bin/cargo" "+a4980311fb7bb9e7893708e6bd3fbbfb2819fd3d" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 6b7e92a7b2352faf4bb35267fefa433be295f5ec5ce073fa19ab53c6b45b04e4
[INFO] running `Command { std: "docker" "start" "-a" "6b7e92a7b2352faf4bb35267fefa433be295f5ec5ce073fa19ab53c6b45b04e4", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "6b7e92a7b2352faf4bb35267fefa433be295f5ec5ce073fa19ab53c6b45b04e4", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "6b7e92a7b2352faf4bb35267fefa433be295f5ec5ce073fa19ab53c6b45b04e4", kill_on_drop: false }`
[INFO] [stdout] 6b7e92a7b2352faf4bb35267fefa433be295f5ec5ce073fa19ab53c6b45b04e4
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc2/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@sha256:7ad1b28ee6f5f7f699f6cf7015098d6ccdd96d6f2d78dd06228f5b4c9faf309c" "/opt/rustwide/cargo-home/bin/cargo" "+a4980311fb7bb9e7893708e6bd3fbbfb2819fd3d" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] d2f9898a45ddfd1d8ead099d7be07de28313e41a6d5ef73c795b5bf8c3aa1485
[INFO] running `Command { std: "docker" "start" "-a" "d2f9898a45ddfd1d8ead099d7be07de28313e41a6d5ef73c795b5bf8c3aa1485", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.175
[INFO] [stderr]     Checking alt-std v0.2.9 (/opt/rustwide/workdir)
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/hashmap.rs:84:17
[INFO] [stdout]    |
[INFO] [stdout] 84 |             let mut e = &mut entries[index as usize];
[INFO] [stdout]    |                 ----^
[INFO] [stdout]    |                 |
[INFO] [stdout]    |                 help: remove this `mut`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_mut)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: bounds on `Self: Drop` are most likely incorrect, consider instead using `core::mem::needs_drop` to detect whether a type can be trivially dropped
[INFO] [stdout]  --> src/stream.rs:3:20
[INFO] [stdout]   |
[INFO] [stdout] 3 | pub trait Stream : Drop {
[INFO] [stdout]   |                    ^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(drop_bounds)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/hashmap.rs:84:17
[INFO] [stdout]    |
[INFO] [stdout] 84 |             let mut e = &mut entries[index as usize];
[INFO] [stdout]    |                 ----^
[INFO] [stdout]    |                 |
[INFO] [stdout]    |                 help: remove this `mut`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_mut)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: bounds on `Self: Drop` are most likely incorrect, consider instead using `core::mem::needs_drop` to detect whether a type can be trivially dropped
[INFO] [stdout]  --> src/stream.rs:3:20
[INFO] [stdout]   |
[INFO] [stdout] 3 | pub trait Stream : Drop {
[INFO] [stdout]   |                    ^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(drop_bounds)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 1.94s
[INFO] running `Command { std: "docker" "inspect" "d2f9898a45ddfd1d8ead099d7be07de28313e41a6d5ef73c795b5bf8c3aa1485", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "d2f9898a45ddfd1d8ead099d7be07de28313e41a6d5ef73c795b5bf8c3aa1485", kill_on_drop: false }`
[INFO] [stdout] d2f9898a45ddfd1d8ead099d7be07de28313e41a6d5ef73c795b5bf8c3aa1485